Back to Search
Start Over
Responses of terrestrial ecosystem phosphorus cycling to nitrogen addition: A meta‐analysis
- Source :
- Global Ecology and Biogeography. 26:713-728
- Publication Year :
- 2017
- Publisher :
- Wiley, 2017.
-
Abstract
- Aim Anthropogenic additions of nitrogen (N) are expected to drive terrestrial ecosystems toward greater phosphorus (P) limitation. However, a comprehensive understanding of how an ecosystem's P cycle responds to external N inputs remains elusive, making model predictions of the anthropogenic P limitation and its impacts largely uncertain. Location Global. Time period 1986-2015. Major taxa studied Terrestrial ecosystems. Methods We conducted a meta-analysis including 288 independent study sites from 192 articles to evaluate global patterns and controls of 10 variables associated with ecosystem P cycling under N addition. Results Overall, N addition increased biomass in plants (+34%) and litter (+15%) as well as plant P content (+17%), while decreasing P concentrations in plants and litter (−8% and −11%, respectively). N addition did not change soil labile P or microbial P, but enhanced phosphatase activity (+24%). The effects of N addition on the litter P pool and soil total P remained unclear due to significant publication biases. The response of P cycling to N addition in tropical forests was different from that in other ecosystem types. N addition did not change plant biomass or phosphatase activity in tropical forests but significantly reduced plant P and soil labile P concentrations. The shift in plant P concentration under N addition was negatively correlated with the N application rate or total N load. N-induced change in soil labile P was strongly regulated by soil pH value at the control sites, with a significant decrease of 14% only in acidic soils (pH
- Subjects :
- 2. Zero hunger
Global and Planetary Change
Biomass (ecology)
010504 meteorology & atmospheric sciences
Ecology
Phosphorus
chemistry.chemical_element
04 agricultural and veterinary sciences
15. Life on land
01 natural sciences
Nitrogen
chemistry
13. Climate action
Soil pH
040103 agronomy & agriculture
Litter
0401 agriculture, forestry, and fisheries
Terrestrial ecosystem
Ecosystem
Cycling
Ecology, Evolution, Behavior and Systematics
0105 earth and related environmental sciences
Subjects
Details
- ISSN :
- 14668238 and 1466822X
- Volume :
- 26
- Database :
- OpenAIRE
- Journal :
- Global Ecology and Biogeography
- Accession number :
- edsair.doi...........c30ec1e3ed2bebc29d51761128c289e0