Search

Your search keyword '"Pan, Zhanlei"' showing total 19 results
Start Over Author "Pan, Zhanlei"
19 results on '"Pan, Zhanlei"'

4. Tracing the Carbon Footprint of Cotton Garments Based on Their Life Cycle: Evidence from an Empirical Study of Multiple Sites in China

Author

Wang, Shuchen, primary, Chong, Chenxi, additional, Huang, Weibin, additional, Guo, Simeng, additional, Wang, Yuhan, additional, Zhang, Yaopeng, additional, Pan, Zhanlei, additional, Wang, Jian, additional, Li, Xin, additional, Zhao, Wenqi, additional, Zhang, Zhenggui, additional, and Wang, Zhanbiao, additional

Published
2024
Full Text
View/download PDF

9. Characteristics of N 2 and N 2 O Fluxes from a Cultivated Black Soil: A Case Study through In Situ Measurement Using the 15 N Gas Flux Method.

Author

Pan, Zhanlei, Wang, Rui, Liu, Yan, Wang, Lin, Zheng, Xunhua, Yao, Zhisheng, He, Hongbo, and Zhang, Xiaochen

Subjects
BLACK cotton soil, DISSOLVED organic matter, TEMPERATE climate, SOIL temperature, SOIL moisture, NITROUS oxide
Abstract

The magnitudes and source partitioning of soil dinitrogen (N2) and nitrous oxide (N2O) emissions are not well documented, yet. To address both issues for black soil subject to a typical cool temperate climate, soil N2O and N2 fluxes following the basal application event of an ammonium-based fertilizer (labeled by 15N) for maize were simultaneously measured in situ by using the 15N gas flux (15NFG) method. During the two-month field experiment, the measured N2 and N2O fluxes cumulated to 1.61 ± 0.47 and 0.12 ± 0.01 kg N ha−1, respectively, showing N2O to N2O plus N2 ratios ( R N 2 O ) of 0.02–0.31 (0.15 on average). Temperature was identified as a key factor regulating the total soil N2 fluxes (r2 = 0.27, p < 0.01), despite the N2 fluxes originated from nitrate denitrification related to dissolved organic carbon concentrations (r2 = 0.39, p < 0.01). Differently, both temperature and soil moisture jointly accounted for 85% and 74% of the variances in the N2O fluxes and the R N 2 O values, respectively (p < 0.01). Moreover, the process(es) other than autotrophic nitrification and heterotrophic denitrification could be of substantial importance for the soil N2O emissions. Our findings emphasized the importance of temperature in regulating N2 emissions from black soil and the possible site- and/or time specificity of a soil factors-based parametrization of R N 2 O . In addition, this study implicates that labeling a nitrogen substrate of nitrification while using the 15N enrichment of N2O is necessary to more accurately quantify total soil N2 fluxes in situ by using the 15NFG approach even though further confirmation in future studies is still needed. [ABSTRACT FROM AUTHOR]

Published
2022
Full Text
View/download PDF

10. Long-Term Warming and Nitrogen Addition Have Contrasting Effects on Ecosystem Carbon Exchange in a Desert Steppe

Author

Wu, Qian, primary, Ren, Haiyan, additional, Bisseling, Ton, additional, Chang, Scott X., additional, Wang, Zhen, additional, Li, Yuanheng, additional, Pan, Zhanlei, additional, Liu, Yinghao, additional, Cahill, James F., additional, Cheng, Xu, additional, Zhao, Mengli, additional, Wang, Zhongwu, additional, Li, Zhiguo, additional, and Han, Guodong, additional

Published
2021
Full Text
View/download PDF

15. The response of plant alpha diversity to different grazer stocking rate in a Stipa breviflora. desert steppe

Author

武倩 Wu Qian, 阿木尔萨那 Amuer Sana, 王忠武 Wang Zhongwu, 张睿洋 Zhang Ruiyang, 潘占磊 Pan Zhanlei, 刘芳 Liu Fang, and 韩国栋 Han Guodong

Subjects
0106 biological sciences, Stocking rate, Ecology, 04 agricultural and veterinary sciences, Biology, 010603 evolutionary biology, 01 natural sciences, Desert steppe, 040103 agronomy & agriculture, 0401 agriculture, forestry, and fisheries, Alpha diversity, Stipa breviflora, Ecology, Evolution, Behavior and Systematics
Published
2017

19. Fertilizer nitrogen loss via N2emission from calcareous soil following basal urea application of winter wheat

Author

ZHANG, Yukun, WANG, Rui, PAN, Zhanlei, LIU, Yan, ZHENG, Xunhua, JU, Xiaotang, ZHANG, Chong, BUTTERBACH-BAHL, Klaus, and HUANG, Binxiang

Abstract

ABSTRACTThe ratio of nitrous oxide (N2O) to N2O plus nitrogen gas (N2) emitted from soils (N2O/(N2O+N2)) is regarded as a key parameter for estimating fertilizer nitrogen (N) loss via N2emission at local, regional or global scales. However, reliable measurement of soil N2emissions is still difficult in fertilized soil-crop systems. In this study, the N loss via N2emission following basal urea application (with a dose of 150 kg N ha−1) to a calcareous soil cultivated with winter wheat was quantified using the helium-based gas-flow-soil-core technique. Emissions of N2and N2O from sampled fresh soils were measured under simulated field soil temperature and oxygen conditions. Our observation performed on the first day after irrigation and rainfall events showed the highest N2and N2O emissions, which amounted to approximately 11.8 and 3.8 μg N h−1kg−1dry soil, corresponding to 3304 and 1064 μg N m−2 h−1, respectively. The N2O/(N2O+N2) molar ratios within about 10 days following fertilization ranged from 0.07 to 0.25, which were much larger than those at the other time. During the one-month experimental period, the urea-N loss via emissions of N2, N2O, and N2+N2O was 1.6%, 0.6%, and 2.2%, respectively. Our study confirms that the widely applied acetylene-inhibition method substantially underestimates fertilizer N losses via N2emissions from calcareous soils cultivated with winter wheat.

Published
2019
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results