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11 results on '"Guirui Yu"'

1. The essential role of biodiversity in the key axes of ecosystem function.

Author

Pu Yan, Fernández-Martínez, Marcos, Van Meerbeek, Koenraad, Guirui Yu, Migliavacca, Mirco, and Nianpeng He

Subjects
BIODIVERSITY conservation, WATER efficiency, STRUCTURAL equation modeling, SPECIES diversity, BIODIVERSITY, ECOSYSTEMS
Abstract

Biodiversity is essential for maintaining the terrestrial ecosystem multifunctionality (EMF). Recent studies have revealed that the variations in terrestrial ecosystem functions are captured by three key axes: the maximum productivity, water use efficiency, and carbon use efficiency of the ecosystem. However, the role of biodiversity in supporting these three key axes has not yet been explored. In this study, we combined the (i) data collected from more than 840 vegetation plots across a large climatic gradient in China using standard protocols, (ii) data on plant traits and phylogenetic information for more than 2,500 plant species, and (iii) soil nutrient data measured in each plot. These data were used to systematically assess the contribution of environmental factors, species richness, functional and phylogenetic diversity, and community-weighted mean (CWM) and ecosystem traits (i.e., traits intensity normalized per unit land area) to EMF via hierarchical partitioning and Bayesian structural equation modeling. Multiple biodiversity attributes accounted for 70% of the influence of all the variables on EMF, and ecosystems with high functional diversity had high resource use efficiency. Our study is the first to systematically explore the role of different biodiversity attributes, including species richness, phylogenetic and functional diversity, and CWM and ecosystem traits, in the key axes of ecosystem functions. Our findings underscore that biodiversity conservation is critical for sustaining EMF and ultimately ensuring human well-being. [ABSTRACT FROM AUTHOR]

Published
2023
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3. Effects of climatic factors and ecosystem responses on the inter-annual variability of evapotranspiration in a coniferous plantation in subtropical China

Author

Xiaoqin Dai, Guirui Yu, Huimin Wang, Xiaomin Sun, Wenjiang Zhang, Jie Song, Xiaoli Fu, Xuefa Wen, Yunfen Liu, Yidong Wang, and Mingjie Xu

Subjects
Atmospheric Science, China, Climate Change, Rain, Eddy covariance, Climate change, lcsh:Medicine, Plant Science, Atmospheric sciences, Ecosystems, Global Change Ecology, Plant-Environment Interactions, Evapotranspiration, Tropical climate, Ecosystem, Biomass, Terrestrial Ecology, Water cycle, lcsh:Science, Biology, Climatology, Tropical Climate, Multidisciplinary, Ecology, Geography, Plant Ecology, Global warming, lcsh:R, Temperature, Water, Agriculture, Forestry, Plant Transpiration, Carbon Dioxide, Tracheophyta, Earth Sciences, Environmental science, Terrestrial ecosystem, lcsh:Q, Seasons, Ecosystem Functioning, Research Article
Abstract

Because evapotranspiration (ET) is the second largest component of the water cycle and a critical process in terrestrial ecosystems, understanding the inter-annual variability of ET is important in the context of global climate change. Eight years of continuous eddy covariance measurements (2003-2010) in a subtropical coniferous plantation were used to investigate the impacts of climatic factors and ecosystem responses on the inter-annual variability of ET. The mean and standard deviation of annual ET for 2003-2010 were 786.9 and 103.4 mm (with a coefficient of variation of 13.1%), respectively. The inter-annual variability of ET was largely created in three periods: March, May-June, and October, which are the transition periods between seasons. A set of look-up table approaches were used to separate the sources of inter-annual variability of ET. The annual ETs were calculated by assuming that (a) both the climate and ecosystem responses among years are variable (Vcli-eco), (b) the climate is variable but the ecosystem responses are constant (Vcli), and (c) the climate is constant but ecosystem responses are variable (Veco). The ETs that were calculated under the above assumptions suggested that the inter-annual variability of ET was dominated by ecosystem responses and that there was a negative interaction between the effects of climate and ecosystem responses. These results suggested that for long-term predictions of water and energy balance in global climate change projections, the ecosystem responses must be taken into account to better constrain the uncertainties associated with estimation.

Published
2014

4. Climate change, human impacts, and carbon sequestration in China.

Author

Jingyun Fang, Guirui Yu, Lingli Liu, Shuijin Hu, and Chapin III, F. Stuart

Subjects
*CLIMATE change, *CARBON sequestration, *ECOSYSTEMS, *STOICHIOMETRY, *SPECIES diversity
Abstract

The article discusses the impacts of climate change and human activities on the ecosystem structure and functioning with emphasis on quantifying the magnitude and carbon (C) distribution pools and C sequestration in China. Information on how species diversity, species traits and nitrogen (N) and phosphorus (P) stoichiometry mediate ecosystem C pool is offered. The background and scientific significance of the research project is also tackled.

Published
2018
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5. Climate control of terrestrial carbon exchange across biomes and continents

Author

Susumu Yamamoto, Tilden P. Meyers, Roberto Zampedri, Sonia Wharton, Krisztina Pintér, Nobuko Saigusa, Christopher B. Williams, Danilo Dragoni, João Pereira, Marc Aubinet, Gregory Starr, Janne Rinne, Jörgen Sagerfors, Alan Barr, Robert Clement, Mario B. S. Siqueira, Nina Buchmann, Lindsay B. Hutley, Laurent Misson, Jingxin Wang, Peter S. Curtis, Xinquan Zhao, Gabriel G. Katul, Leonardo Montagnani, Anders Lindroth, Thomas Foken, Stephen G. Pallardy, Haiqiang Guo, Tuomas Laurila, Casimiro Pio, M. Myklebust, Alessandro Araújo, John D. Albertson, Philippe Ciais, Christoph S. Vogel, Russell K. Monson, Werner L. Kutsch, James T. Randerson, Mika Aurela, Giorgio Matteucci, Chuixiang Yi, Ronald J. Ryel, Andrew Black, J. William Munger, Meelis Moelder, Eric Dufrêne, Christian Feigenwinter, Corinna Rebmann, Torbjoern Johansson, Fred C. Bosveld, Jiquan Chen, Benjamin Loubet, Alexander Knohl, Timothy A. Martin, J. Fuhrer, Nicolas Delpierre, Andreas Ibrom, Michael L. Goulden, Zoltán Barcza, Albin Hammerle, John Tenhunen, Lawrence B. Flanagan, Giovanni Manca, John Wolbeck, Mark A. Sutton, Paul Berbigier, Guirui Yu, William J. Massman, Ankur R. Desai, Eddy Moors, Mukufute M. Mukelabai, Christof Ammann, Hank A. Margolis, Lianhong Gu, Bernard Heinesch, Mats Nilsson, Allison L. Dunn, Ray Leuning, Zoltán Nagy, D. Bryan Dail, Shaoqiang Wang, Celso von Randow, Carole Helfter, Jason Beringer, Guenther Seufert, John Moncrieff, Hans Peter Schmid, Gerard Kiely, Luis Aires, Juha-Pekka Tuovinen, André Granier, Thomas Gruenwald, Bruce D. Cook, Georg Wohlfahrt, Thomas Kolb, Shijie Han, Xiyan Xu, Pierre Cellier, Michal V. Marek, Allen H. Goldstein, Xuefa Wen, M. S. J. Broadmeadow, Serge Rambal, Paul V. Bolstad, Ram Oren, Daniel M. Ricciuto, Tha Paw U Kyaw, Werner Eugster, Sean P. Burns, Zoltán Tuba, M. Altaf Arain, Riccardo Valentini, Corinne Jacobs, Heping Liu, Christine Moureaux, Weiguo Wang, Marjan Jongen, Runze Li, Gabriel Pita, Bin Zhao, Nigel T. Roulet, Niall P. Hanan, Christian Bernhofer, Walter C. Oechel, Harry McCaughey, Bert G. Drake, Lutz Merbold, M. Montes-Helu, Peter M. Lafleur, Asko Noormets, Jean-François Soussana, John M. Frank, Katja Klumpp, Giuseppe-Scarascia Mugnozza, Jan Elbers, Sabina Dore, Dimmie Hendriks, Mirco Migliavacca, María José Sanz, Franco Miglietta, Roser Matamala, László Haszpra, Lisa R. Welp, Damiano Gianelle, Matthew Wilkinson, Kim Pilegaard, Federica Rossi, Thomas L. Powell, Jingming Chen, Ebba Dellwik, Matthias Falk, School of Earth and Environmental Sciences, Queens College, City University of New York [New York] (CUNY), Environmental Sciences Division [Oak Ridge], Oak Ridge National Laboratory [Oak Ridge] (ORNL), UT-Battelle, LLC-UT-Battelle, LLC, Department of Statistics, Pennsylvania State University (Penn State), Penn State System-Penn State System, Department of Forest Ecology and Management, Swedish University of Agricultural Sciences (SLU), CESAM and Department of Environmental Engineering, School of Technology and Management, Polytechnic Institute of Leiria, Department of Civil and Environmental Engineering, Duke University [Durham], Agroscope, School of Geography and Earth Sciences [Hamilton ON], McMaster University [Hamilton, Ontario], Instituto Nacional de Pesquisas da Amazônia (INPA), Gembloux Agro-Bio Tech, Unit of Biosystem Physics, Université de Liège, Climate and Global Change Research [Helsinki], Finnish Meteorological Institute (FMI), Department of Meteorology [Budapest], Institute of Geography and Earth Sciences [Budapest], Faculty of Sciences [Budapest], Eötvös Loránd University (ELTE)-Eötvös Loránd University (ELTE)-Faculty of Sciences [Budapest], Eötvös Loránd University (ELTE)-Eötvös Loránd University (ELTE), Environment and Climate Change Canada, Écologie fonctionnelle et physique de l'environnement (EPHYSE), Institut National de la Recherche Agronomique (INRA), School of Geography and Environmental Science, Monash University [Clayton], Institute of Hydrology and Meteorology [Dresden], Technische Universität Dresden = Dresden University of Technology (TU Dresden), Land and Food Systems, University of British Columbia (UBC), University of Minnesota [Twin Cities] (UMN), University of Minnesota System, Royal Netherlands Meteorological Institute (KNMI), Forest Research, Institute of Plant Science, National Center for Atmospheric Research [Boulder] (NCAR), Environnement et Grandes Cultures (EGC), Institut National de la Recherche Agronomique (INRA)-AgroParisTech, Department of Geography, University of Toronto, Department of Environmental Sciences [Toledo USA], University of Toledo, Laboratoire des Sciences du Climat et de l'Environnement [Gif-sur-Yvette] (LSCE), Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), ICOS-ATC (ICOS-ATC), Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), School of Geosciences [Edinburgh], University of Edinburgh, Biospheric Sciences Laboratory, NASA Goddard Space Flight Center (GSFC), Department of Evolution, Ecology, and Organismal Biology, Ohio State University [Columbus] (OSU), Department of Plant, Soil, and Environmental Science, University of Maine, Wind Energy Division [Roskilde], Risø National Laboratory for Sustainable Energy (Risø DTU), Danmarks Tekniske Universitet = Technical University of Denmark (DTU)-Danmarks Tekniske Universitet = Technical University of Denmark (DTU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Department of Atmospheric and Oceanic Sciences [Madison], University of Wisconsin-Madison, School of Forestry, Northern Arizona University [Flagstaff], Atmospheric Science Program, Department of Geography, Indiana University [Bloomington], Indiana University System-Indiana University System, Smithsonian Environmental Research Center (SERC), Ecologie Systématique et Evolution (ESE), Université Paris-Sud - Paris 11 (UP11)-AgroParisTech-Centre National de la Recherche Scientifique (CNRS), Department of Physical and Earth Science, Worcester State College, Wageningen University and Research [Wageningen] (WUR), Department of Land, Air and Water Resources, University of California [Davis] (UC Davis), University of California (UC)-University of California (UC), Institute for Meteorology, Climatology and Remote Sensing [Basel], University of Basel (Unibas), Department of Biological Sciences, University of Lethbridge, Micrometeorology Group [Bayreuth], Universität Bayreuth, Rocky Mountain Research Station, United States Department of Agriculture, Environment and Natural Resources Area, Istituto Agrario di San Michele all'Adige (IASMA), Department of Environmental Science, Policy, and Management [Berkeley] (ESPM), University of California [Berkeley] (UC Berkeley), Department of Earth System Science [Irvine] (ESS), University of California [Irvine] (UC Irvine), Ecologie et Ecophysiologie Forestières [devient SILVA en 2018] (EEF), Institut National de la Recherche Agronomique (INRA)-Université de Lorraine (UL), Key Laboratory for Biodiversity Science and Ecological Engineering [Shanghai], Institute of Biodiversity Science at Fudan University [Shanghai] (IBSFU), Institute of Ecology, Leopold Franzens Universität Innsbruck - University of Innsbruck, Institute of Applied Ecology, Chinese Academy of Sciences [Beijing] (CAS), Natural Resource Ecology Laboratory [Fort Collins] (NREL), Colorado State University [Fort Collins] (CSU), Hungarian Meteorological Service (OMSZ), Centre for Ecology and Hydrology, Department of Hydrology and Geo-Environmental Sciences [Amsterdam], Vrije Universiteit Amsterdam [Amsterdam] (VU), School of Environmental and Life Sciences, Charles Darwin University, Biosystems Division [Roskilde], Earth System Science and Climate Change Group, Geobiosphere Science Centre, Physical Geography and Ecosystems Analysis, Lund University [Lund], Instituto Superior de Agronomia [Lisboa] (ISA), Universidade de Lisboa = University of Lisbon (ULISBOA), School of the Environment, Civil and Environmental Engineering Department, University College Cork (UCC), Unité de recherche sur l'Ecosystème Prairial (UREP), Institut für Agrarrelevante Klimaforschung, Johann Heinrich von Thünen-Institut (vTI), Trent University, CSIRO Marine and Atmospheric Research (MAR), Commonwealth Scientific and Industrial Research Organisation [Canberra] (CSIRO), Department of Physics, Atmospheric Sciences and Geoscience [Jackson], Jackson State University (JSU), Institute of Atmospheric Pollution Research (IIA), National Research Council of Italy | Consiglio Nazionale delle Ricerche (CNR), Division of Ecosystems Processes Lab. of Plants Ecological Physiology, Institute of Systems Biology and Ecology, Centre d'études de la forêt Faculté de Foresterie et de Géomatique, Université Laval [Québec] (ULaval), University of Florida [Gainesville] (UF), Biosciences Division, Argonne National Laboratory [Lemont] (ANL), Queen's University [Kingston, Canada], Max Planck Institute for Biogeochemistry (MPI-BGC), Max-Planck-Gesellschaft, ARL Atmospheric Turbulence and Diffusion Division (ATD), NOAA Air Resources Laboratory (ARL), National Oceanic and Atmospheric Administration (NOAA)-National Oceanic and Atmospheric Administration (NOAA), Remote Sensing of Environmental Dynamics Laboratory, DISAT, Università degli Studi di Milano = University of Milan (UNIMI), Instituto di Biometeorologia, Centre National de la Recherche Scientifique (CNRS), Department of Ecology and Evolutionary Biology, University of Colorado [Boulder], Servizi Forestali, Agenzia per l'Ambiente, Autonomous Province of Bolzano (APB), Faculty of Sciences and Technologies, Free University of Bozen-Bolzano, Gembloux Agro-Bio Tech, Unit of Crops Management, Zambia Meteorological Department (ZMD), Department of Earth and Planetary Sciences [Cambridge, USA] (EPS), Harvard University, Institute of Botany and Ecophysiology, Agricultural University of Gödöllô, Department of Forestry and Environmental Resources, North Carolina State University [Raleigh] (NC State), University of North Carolina System (UNC)-University of North Carolina System (UNC), Department of Biology [San Diego State Univ] (Biology SDSU), San Diego State University (SDSU), Nicholas School of the Environment and Earth Sciences, Department of Forestry, University of Missouri [Columbia] (Mizzou), University of Missouri System-University of Missouri System, Atmospheric Science Group, LAWR, CESAM and Department of Environment, Universidade de Aveiro, Mechanical Engineering Department, Instituto Superior Técnico, Universidade Técnica de Lisboa (IST), The Department of Organismic and Evolutionary Biology, Centre d’Ecologie Fonctionnelle et Evolutive (CEFE), Université Paul-Valéry - Montpellier 3 (UPVM)-Institut National de la Recherche Agronomique (INRA)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-École Pratique des Hautes Études (EPHE), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD [France-Sud])-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Earth System Science Center, Instituto Nacional de Pesquisas Espaciais (INPE), Department of Physics, Department of Geography [Montréal], McGill University = Université McGill [Montréal, Canada], Department of Wildland Resources, Utah State University (USU), Helmholtz Zentrum für Umweltforschung = Helmholtz Centre for Environmental Research (UFZ), Centro de Estudios Ambientales del Mediterraneo, Department of Agronomy, Forestry and Land Use, Agricultural Research Council (CRA), Institut für Meteorologie und Klimaforschung - Atmosphärische Umweltforschung (IMK-IFU), Karlsruher Institut für Technologie (KIT), JRC Institute for Environment and Sustainability (IES), European Commission - Joint Research Centre [Ispra] (JRC), Collège de Direction (CODIR), University of Alabama [Tuscaloosa] (UA), Centre for Ecology and Hydrology [Edinburgh] (CEH), Natural Environment Research Council (NERC), Department of Plant Ecology, Department of Forest Environment and Resources, Università degli studi della Tuscia [Viterbo], Biological Station, University of Michigan [Ann Arbor], University of Michigan System-University of Michigan System, chine, Institute of Geographic Sciences and Natural Resource Research, IMSG@National Center for Environmental Predictions, Geosciences Research Division, Scripps Institution of Oceanography, University of California (UC), Atmospheric, Earth and Energy Division (AEED), Lawrence Livermore National Laboratory (LLNL), Graduate Degree Program in Geography, Clark University, Okayama University, Northwest Plateau Institute of Biology, City University of New-York [New-York] ( CUNY ), Environmental Sciences Division, Oak Ridge National Laboratory, PennState University [Pennsylvania] ( PSU ), Department of Forest Ecology, Swedish University of Agricultural Sciences ( SLU ), Duke university [Durham], School of Geography and Earth Sciences, Instituto Nacional de Pesquisas da Amazônia, Finnish Meteorological Institute, Climate Change Research, Department Meteorology [Budapest], Eötvös Loránd University ( ELTE ) -Eötvös Loránd University ( ELTE ), Écologie fonctionnelle et physique de l'environnement ( EPHYSE - UR1263 ), Institut National de la Recherche Agronomique ( INRA ), Institute of Hydrology and Meteorology, Technische Universität Dresden ( TUD ), University of British Columbia ( UBC ), University of Minnesota [Minneapolis], Royal Netherlands Meteorological Institute ( KNMI ), Swiss Federal Institute of Technology in Zürich ( ETH Zürich ), National Center for Atmospheric Research [Boulder] ( NCAR ), Environnement et Grandes Cultures ( EGC ), AgroParisTech-Institut National de la Recherche Agronomique ( INRA ), Department of Environmental Sciences, Commissariat à l'énergie atomique et aux énergies alternatives ( CEA ), NASA Goddard Space Flight Center ( GSFC ), Ohio State University [Columbus] ( OSU ), Risø National Laboratory for Sustainable Energy ( Risø DTU ), Technical University of Denmark [Lyngby] ( DTU ) -Technical University of Denmark [Lyngby] ( DTU ), University of Wisconsin-Madison [Madison], Smithsonian Environmental Research Center, Ecologie Systématique et Evolution ( ESE ), Université Paris-Sud - Paris 11 ( UP11 ) -AgroParisTech-Centre National de la Recherche Scientifique ( CNRS ), Wageningen University and Research Centre [Wageningen] ( WUR ), University of California Davis, Institute for Meteorology, Climatology and Remote Sensing, University of Basel ( Unibas ), Department of Micrometeorology, University of Bayreuth, Istituto Agrario di San Michele all'Adige ( IASMA ), Department of Environmental Science, Policy and Management, University of California [Berkeley], Department of Earth System Science [Irvine] ( ESS ), University of California [Irvine] ( UCI ), Ecologie et Ecophysiologie Forestières [devient SILVA en 2018] ( EEF ), Institut National de la Recherche Agronomique ( INRA ) -Université de Lorraine ( UL ), Institute of Hydrology and Meteorology, Department of Meteorology, Institute of Biodiversity Science at Fudan University [Shanghai] ( IBSFU ), University of Innsbruck, Chinese Academy of Sciences [Beijing] ( CAS ), Natural Resource Ecology Laboratory, Colorado State University [Fort Collins] ( CSU ), Hungarian Meteorological Service ( OMSz ), Department of Hydrology and Geo-Environmental Sciences, University of Amsterdam [Amsterdam] ( UvA ), Instituto Superior de Agronomia, Universidade Técnica de Lisboa, University College Cork, UR 0874 Unité de recherche sur l'Ecosystème Prairial, Institut National de la Recherche Agronomique ( INRA ) -Unité de recherche sur l'Ecosystème Prairial ( UREP ) -Ecologie des Forêts, Prairies et milieux Aquatiques ( EFPA ), Finnish Meteorological Institute ( FMI ), Marine and Atmospheric Research, Commonwealth Scientific and Industrial Research Organisation, Department of Physics, Atmospheric Sciences and Geoscience, Jackson State University, Institute of Atmospheric Pollution Research ( IIA ), Consiglio Nazionale delle Ricerche [Roma] ( CNR ), Université Laval, University of Florida [Gainesville], Argonne National Laboratory [Lemont] ( ANL ), Queen's University [Kingston], Max Planck Institute for Biogeochemistry, Atmospheric Turbulence and Diffusion Division, Università degli studi di Milano [Milano], Centre National de la Recherche Scientifique ( CNRS ), University of Colorado Boulder [Boulder], Autonomous Province of Bolzano ( APB ), Zambia Meteorological Department ( ZMD ), Division of Engineering and Applied Science, Department of Earth and Planetary Science, North Carolina State University [Raleigh] ( NCSU ), Department of Biology [San Diego], San Diego State University ( SDSU ), University of Missouri ( Saisissez le sigle en majuscules sans points ), University of Aveiro, Instituto Superior Técnico, Universidade Técnica de Lisboa ( IST ), Centre d’Ecologie Fonctionnelle et Evolutive ( CEFE ), Université Paul-Valéry - Montpellier 3 ( UM3 ) -Centre international d'études supérieures en sciences agronomiques ( Montpellier SupAgro ) -École pratique des hautes études ( EPHE ) -Institut national de la recherche agronomique [Montpellier] ( INRA Montpellier ) -Université de Montpellier ( UM ) -Centre National de la Recherche Scientifique ( CNRS ) -Institut de Recherche pour le Développement ( IRD [France-Sud] ) -Institut national d’études supérieures agronomiques de Montpellier ( Montpellier SupAgro ), Instituto Nacional de Pesquisas Espaciais ( INPE ), Université McGill, Utah State University ( USU ), Center for Global Environmental Research, National Institute for Environmental Studies ( NIES ), Agricultural Research Council ( CRA ), Institut für Meteorologie und Klimaforschung - Atmosphärische Umweltforschung ( IMK-IFU ), Karlsruher Institut für Technologie ( KIT ), JRC Institute for Environment and Sustainability ( IES ), European Commission - Joint Research Centre [Ispra] ( JRC ), UAR 0233 Collège de Direction, Institut National de la Recherche Agronomique ( INRA ) -Direction Collégiale ( DCOLL ) -Collège de Direction ( CODIR ), University of Alabama [Tuscaloosa] ( UA ), Centre for Ecology and Hydrology [Edinburgh] ( CEH ), Natural Environment Research Council ( NERC ), Tuscia University, University of California, Atmospheric, Earth and Energy Division, Lawrence Livermore National Laboratory, Écologie fonctionnelle et physique de l'environnement (EPHYSE - UR1263), Technische Universität Dresden (TUD), University of Minnesota [Twin Cities], AgroParisTech-Institut National de la Recherche Agronomique (INRA), Technical University of Denmark [Lyngby] (DTU)-Technical University of Denmark [Lyngby] (DTU), Wageningen University and Research Centre [Wageningen] (WUR), University of California-University of California, University of California [Irvine] (UCI), Hungarian Meteorological Service (OMSz), Institut National de la Recherche Agronomique (INRA)-Unité de recherche sur l'Ecosystème Prairial (UREP)-Ecologie des Forêts, Prairies et milieux Aquatiques (EFPA), Consiglio Nazionale delle Ricerche [Roma] (CNR), Harvard University [Cambridge], University of Missouri [Columbia], Institut de Recherche pour le Développement (IRD [France-Sud])-Centre National de la Recherche Scientifique (CNRS)-École pratique des hautes études (EPHE)-Université de Montpellier (UM)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro)-Institut National de la Recherche Agronomique (INRA)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Université Paul-Valéry - Montpellier 3 (UM3), McGill University, Helmholtz Centre for Environmental Research (UFZ), Institut National de la Recherche Agronomique (INRA)-Direction Collégiale (DCOLL)-Collège de Direction (CODIR), Université Paul-Valéry - Montpellier 3 (UM3)-Institut National de la Recherche Agronomique (INRA)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-École pratique des hautes études (EPHE)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD [France-Sud])-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ), Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ), Università degli Studi di Milano [Milano] (UNIMI), Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-École pratique des hautes études (EPHE), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Institut National de la Recherche Agronomique (INRA)-Université Paul-Valéry - Montpellier 3 (UPVM)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut de Recherche pour le Développement (IRD [France-Sud]), Hydrology and Geo-environmental sciences, and Earth and Climate

Subjects
010504 meteorology & atmospheric sciences, [SDV]Life Sciences [q-bio], Biome, UNCERTAINTY, Carbon sequestration, eddy flux photosynthesis, soil respiration, 01 natural sciences, Biomes, EDDY FUX, Soil respiration, SDG 13 - Climate Action, CWK - Earth System Science and Climate Change, Wageningen Environmental Research, Biosystemer, Photosynthesis, uncertainty, TEMPERATURE, SDG 15 - Life on Land, General Environmental Science, Carbon dioxide in Earth's atmosphere, changement climatique, Respiration, Temperature, Dryness, Global Carbon Cycle, TERRESTRIAL CARBON SEQUESTRATION, facteur climatique, Forestry, Climate Control, deciduous forest, 04 agricultural and veterinary sciences, fluxes, RESPIRATION, Climatology, Terrestrial ecosystem, eddy-covariance measurements, INTERANNUAL VARIABILITY, CLIMATE CONTROL, BIOMES, SOIL RESPIRATION, DIOXIDE, cycle du carbone, Carbon Sequestration, FLUXES, effet de serre, LONG-TERM, interannual variability, SPATIAL VARIABILITY, education, water-vapor, Eddy covariance, DRYNESS, Miljø og klima, Eddy Fluxes, 114 Physical sciences, écosystème, Ecosystems, Carbon cycle, NET ECOSYSTEM EXCHANGE, NEE, climate control, terrestrial carbon sequestration, temperature, dryness, eddy flux, biomes, photosynthesis, respiration, global carbon cycle, dioxide, bilan de carbone, température, Ecosystem, 0105 earth and related environmental sciences, Nee, long-term, [ SDV ] Life Sciences [q-bio], EDDY-COVARIANCE MEASUREMENTS, Renewable Energy, Sustainability and the Environment, PHOTOSYNTHESIS, Public Health, Environmental and Occupational Health, Carbon Dioxide, 15. Life on land, CWC - Earth System Science and Climate Change, Carbon, DECIDUOUS FOREST, GLOBAL CARBON CYCLE, flux, WATER-VAPOR, 13. Climate action, Atmospheric Chemistry, 040103 agronomy & agriculture, 0401 agriculture, forestry, and fisheries, Environmental science, Eddy flux, spatial variability
Abstract

Understanding the relationships between climate and carbon exchange by terrestrial ecosystems is critical to predict future levels of atmospheric carbon dioxide because of the potential accelerating effects of positive climate-carbon cycle feedbacks. However, directly observed relationships between climate and terrestrial CO2 exchange with the atmosphere across biomes and continents are lacking. Here we present data describing the relationships between net ecosystem exchange of carbon (NEE) and climate factors as measured using the eddy covariance method at 125 unique sites in various ecosystems over six continents with a total of 559 site-years. We find that NEE observed at eddy covariance sites is (1) a strong function of mean annual temperature at mid-and high-latitudes, (2) a strong function of dryness at mid-and low-latitudes, and (3) a function of both temperature and dryness around the mid-latitudinal belt (45 degrees N). The sensitivity of NEE to mean annual temperature breaks down at similar to 16 degrees C (a threshold value of mean annual temperature), above which no further increase of CO2 uptake with temperature was observed and dryness influence overrules temperature influence.

Published
2010

6. Divergence of dominant factors on soil microbial communities and functions in forest ecosystems along a climatic gradient.

Author

Zhiwei Xu, Guirui Yu, Xinyu Zhang, Nianpeng He, Qiufeng Wang, Shengzhong Wang, Xiaofeng Xu, Ruili Wang, and Ning Zhao

Subjects
SOIL microbiology, ECOSYSTEMS, SOIL microbial ecology, CLIMATOLOGY, FORESTS & forestry
Abstract

Soil microorganisms play an important role in regulating nutrient cycling in terrestrial ecosystems. Most of the studies conducted thus far have been confined to a single forest biome or have focused on one or two controlling factors, and few have dealt with the integrated effects of climate, vegetation, and soil substrate availability on soil microbial communities and functions among different forests. In this study, we used phospholipid-derived fatty acid (PLFA) analysis to investigate soil microbial community structure, and extracellular enzymatic activities to evaluate the functional potential of soil microbes of different types of forests in three different climatic zones along the North-South transect in eastern China (NSTEC). In general, soil enzyme activities and microbial PLFAs were higher in primary forests than in secondary forests in temperate and warm temperate regions. In the subtropical region, soil enzyme activities were lower in the primary forests than in the secondary forests and microbial PLFAs did not differ significantly between primary and secondary forests. The microbial PLFAs and enzyme activities differed considerably between broadleaved and coniferous forests. Different species of coniferous trees may cause variations in soil microbial PLFAs and enzyme activities. Both climate and forest type had significant effects on soil enzyme activities and microbial communities with a considerable interactive effect. Litter nutrients made an important contribution to variations in the soil microbial communities and enzyme activities in temperate zones, while soil micro-climate and nutrients were the main controls on the soil microbial community structure and enzymatic activities in warm temperate and subtropical zones. Our results indicate that the main controls on soil microbes and functions vary across forest ecosystems in different climatic zones, and that the effects of soil moisture content, soil temperature, and the soil N/P ratio were considerable. This information will add value to modeling of microbial processes and will contribute to carbon cycling in large-scale carbon models. [ABSTRACT FROM AUTHOR]

Published
2017
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7. Hysteresis Responses of Evapotranspiration to Meteorological Factors at a Diel Timescale: Patterns and Causes

Author

Guirui Yu, Yingnian Li, Qiufeng Wang, Xianjin Zhu, and Han Zheng

Subjects
Meteorological Concepts, Vapour Pressure Deficit, Eddy covariance, lcsh:Medicine, Atmospheric sciences, Ecosystems, Global Change Ecology, Evapotranspiration, medicine, Terrestrial Ecology, Water cycle, lcsh:Science, Diel vertical migration, Ecosystem, Transpiration, Physics, Multidisciplinary, Ecology, Plant Ecology, lcsh:R, Ecology and Environmental Sciences, Biology and Life Sciences, Biogeochemistry, Models, Theoretical, Seasonality, medicine.disease, Geochemistry, Biogeography, Hysteresis (economics), Earth Sciences, lcsh:Q, Research Article
Abstract

Evapotranspiration (ET) is an important component of the water cycle in terrestrial ecosystems. Understanding the ways in which ET changes with meteorological factors is central to a better understanding of ecological and hydrological processes. In this study, we used eddy covariance measurements of ET from a typical alpine shrubland meadow ecosystem in China to investigate the hysteresis response of ET to environmental variables including air temperature (T a), vapor pressure deficit (VPD) and net radiation (R n) at a diel timescale. Meanwhile, the simulated ET by Priestly-Taylor equation was used to interpret the measured ET under well-watered conditions. Pronounced hysteresis was observed in both T a and VPD response curves of ET. At a similar T a and VPD, ET was always significantly depressed in the afternoon compared with the morning. But the hysteresis response of ET to R n was not evident. Similar hysteresis patterns were also observed in the T a/VPD response curves of simulated ET. The magnitudes of the measured and simulated hysteresis loops showed similar seasonal variation, with relatively smaller values occurring from May to September, which agreed well with the lifetime of plants and the period of rainy season at this site. About 62% and 23% of changes in the strength of measured ET-T a and ET-VPD loops could be explained by the changes in the strength of simulated loops, respectively. Thus, the time lag between R n and T a/VPD is the most important factor generating and modulating the ET-T a/VPD hysteresis, but plants and water status also contribute to the hysteresis response of ET. Our research confirmed the different hysteresis in the responses of ET to meteorological factors and proved the vital role of R n in driving the diel course of ET.

Published
2014

8. Divergent Changes in Plant Community Composition under 3-Decade Grazing Exclusion in Continental Steppe

Author

Quansheng Chen, Nianpeng He, Xingguo Han, and Guirui Yu

Subjects
Environmental change, Steppe, animal diseases, lcsh:Medicine, Plant Science, Biology, complex mixtures, Ecosystems, Grassland, Plant-Environment Interactions, parasitic diseases, Grazing, lcsh:Science, Community Structure, Conservation grazing, geography, Multidisciplinary, geography.geographical_feature_category, Ecology, Plant Ecology, lcsh:R, Community structure, food and beverages, Species diversity, Plant community, Biodiversity, Plants, Community Ecology, lcsh:Q, sense organs, Ecosystem Functioning, Research Article
Abstract

An understanding of the factors controlling plant community composition will allow improved prediction of the responses of plant communities to natural and anthropogenic environmental change. Using monitoring data from 1980 to 2009, we quantified the changes in community composition in Leymus chinensis and Stipa grandis dominated grasslands in Inner Mongolia under long-term grazing-exclusion and free-grazing conditions, respectively. We demonstrated that the practice of long-term grazing exclusion has significant effects on the heterogeneity, the dominant species, and the community composition in the two grasslands. The community composition of L. chinensis and S. grandis grasslands exhibited directional changes with time under long-term grazing exclusion. Under free grazing, the L. chinensis community changed directionally with time, but the pattern of change was stochastic in the S. grandis community. We attributed the divergent responses to long-term grazing exclusion in the S. grandis and L. chinensis grasslands to litter accumulation and changes in the microenvironment after grazing exclusion, which collectively altered the growth and regeneration of the dominant species. The changes in the grazed grasslands were primarily determined by the selective feeding of sheep during long-term heavy grazing. Overall, the responses of the community composition of the Inner Mongolian grasslands to long-term grazing exclusion and heavy grazing were divergent, and depended primarily on the grassland type. Our findings provide new insights into the role of grazing in the maintenance of community structure and function and therefore have important implications for grassland management.

Published
2011

9. A Brief Introduction to Chinese Ecosystem Research Network (CERN).

Author

Shenggong, Li, Guirui, Yu, Xiubo, Yu, Honglin, He, and Xuebing, Guo

Subjects
ECOSYSTEMS, BIOTIC communities, ECOSYSTEM management, RESEARCH institutes, ECOLOGICAL research
Abstract

The article provides information on the Chinese Ecosystem Research Network (CERN), which is considered as the longest-lived ecological network in China that facilitates research on the country's ecosystems. Topics discussed include the founding and organization of the CERN, missions and achievements of the CERN, and motivation and future orientation of the CERN.

Published
2015
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10. High carbon dioxide uptake by subtropical forest ecosystems in the East Asian monsoon region.

Author

Guirui Yu, Zhi Chen, Shilong Piao, Changhui Peng, Ciais, Philippe, Qiufeng Wang, Xuanran Li, and Xianjin Zhu

Subjects
*FORESTS & forestry, *ECOSYSTEMS, *CARBON cycle, *CARBON dioxide
Abstract

Temperate- and high-latitude forests have been shown to contribute a carbon sink in the Northern Hemisphere, but fewer studies have addressed the carbon balance of the subtropical forests. In the present study, we integrated eddy covariance observations established in the 1990s and 2000s to show that East Asian monsoon subtropical forests between 20°N and 40°N represent an average net ecosystem productivity (NEP) of 362 ± 39 g C m-2 yr-1 (mean ± 1 SE). This average forest NEP value is higher than that of Asian tropical and temperate forests and is also higher than that of forests at the same latitudes in Europe- Africa and North America. East Asian monsoon subtropical forests have comparable NEP to that of subtropical forests of the southeastern United States and intensively managed Western European forests. The total NEP of East Asian monsoon subtropical forests was estimated to be 0.72 ± 0.08 Pg C yr-1, which accounts for 8% of the global forest NEP. This result indicates that the role of subtropical forests in the current global carbon cycle cannot be ignored and that the regional distributions of the Northern Hemisphere's terrestrial carbon sinks are needed to be reevaluated. The young stand ages and high nitrogen deposition, coupled with sufficient and synchronous water and heat availability, may be the primary reasons for the high NEP of this region, and further studies are needed to quantify the contribution of each underlying factor. [ABSTRACT FROM AUTHOR]

Published
2014
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11. Water use efficiency threshold for terrestrial ecosystem carbon sequestration in China under afforestation.

Author

Yang Gao, Xianjin Zhu, Guirui Yu, Nianpeng He, Qiufeng Wang, and Jing Tian

Subjects
*WATER use, *CARBON sequestration, *ECOSYSTEMS, *AFFORESTATION, *CARBON cycle
Abstract

Forests play a vital role in global carbon (C) cycling. Accordingly, afforestation engineering programs that promote increased terrestrial C stocks are an important means to help gradually decrease atmospheric CO2 emissions. China, however, had increased its afforested area bordering hydroclimatic zones to 275.71 million hm² between 1949 and 2010. Ecosystem water use efficiency (EWUE) and plant water use efficiency (PWUE) provide data on ecosystem sensitivity to water availability across rainfall regimes. The water consumption cost of C sequestration (WCCC) is also an important parameter that gauges the cost of C sequestration under afforestation. However, abrupt changes in EWUE and PWUE (threshold values of 1.5 and 3.6 gC kg-1 H2O, respectively) have been measured within the 400-500mm precipitation climatic isoline boundary situated between semi-humid and arid zones. The threshold value of the corresponding WCCC was 1.0 kg H2O gC-1. Forest ecosystems in China typically generate high EWUE and PWUE values (2.80±0.77 and 4.25±1.02 gC kg-1 H2O, respectively) but low WCCC values (0.52±0.42 kg H2Og-1C), providing proof that afforestation is the best choice in increasing terrestrial C stocks. However, China's major afforestation engineering programs have concentrated efforts toward low EWUE and PWUE and high WCCC in the western region of the 400-500mm precipitation isoline boundary, belonging to the arid and semiarid zones, which introduced potential environmental risks. Therefore, policies related to large-scale C sequestration initiatives under afforestation must first fully consider the statuses of WCCC and WUE. [ABSTRACT FROM AUTHOR]

Published
2014
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