globalchange  > 气候变化与战略
DOI: 10.1029/2018GB005952
论文题名:
Nitrogen Deposition Maintains a Positive Effect on Terrestrial Carbon Sequestration in the 21st Century Despite Growing Phosphorus Limitation at Regional Scales
作者: Fleischer K.; Dolman A.J.; van der Molen M.K.; Rebel K.T.; Erisman J.W.; Wassen M.J.; Pak B.; Lu X.; Rammig A.; Wang Y.-P.
刊名: Global Biogeochemical Cycles
ISSN: 0886-6236
EISSN: 1944-9224
出版年: 2019
卷: 33, 期:6
语种: 英语
英文关键词: anthropogenic effect ; atmospheric deposition ; carbon sequestration ; carbon sink ; nitrogen ; nitrogen fixation ; nutrient limitation ; phosphorus ; terrestrial ecosystem ; terrestrial environment ; twenty first century
学科: carbon sequestration ; land carbon sink ; nitrogen deposition ; nitrogen fixation ; phosphorus limitation ; terrestrial ecosystems
中文摘要: Nitrogen (N) and phosphorus (P) are two dominant nutrients regulating the productivity of most terrestrial ecosystems. The growing imbalance of anthropogenic N and P inputs into the future is estimated to exacerbate P limitation on land and limit the land carbon (C) sink, so that we hypothesized that P limitation will increasingly reduce C sequestered per unit N deposited into the future. Using a global land surface model (CABLE), we simulated the effects of increased N deposition with and without P limitation on land C uptake and the fate of deposited N on land from 1901 to 2100. Contrary to our hypothesis, we found that N deposition continued to induce land C sequestration into the future, contributing to 15% of future C sequestration as opposed to 6% over the historical period. P limitation reduced the future land C uptake per unit N deposited only moderately at the global scale but P limitation increasingly caused N deposition to have net negative effects on the land C balance in the temperate zone. P limitation further increased the fraction of deposited N that is lost via leaching to aquatic ecosystems, globally from 38.5% over the historical period to 53% into the future, and up to 75% in tropical ecosystems. Our results suggest continued N demand for plant productivity but also indicate growing adverse N deposition effects in the future biosphere, not fully accounted for in global models, emphasizing the urgent need to elaborate on model representations of N and P dynamics. ©2019. American Geophysical Union. All Rights Reserved.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/160121
Appears in Collections:气候变化与战略

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作者单位: Land Surface-Atmosphere Interactions, Technical University Munich, Freising, Germany; Department of Earth Sciences, Cluster Earth and Climate, Vrije Universiteit Amsterdam, Amsterdam, Netherlands; School of Geographical Sciences, Nanjing University, Nanjing University of Information Science and Technology, Nanjing, China; Meteorology and Air Quality Group, Wageningen University and Research Centre, Wageningen, Netherlands; Environmental Sciences, Copernicus Institute of Sustainable Development, Utrecht University, Utrecht, Netherlands; Louis Bolk Institute, Driebergen, Netherlands; Oceans and Atmosphere, CSIRO, Aspendale, VIC, Australia; Center for Ecosystem Science and Society, Northern Arizona University, Flagstaff, AZ, United States

Recommended Citation:
Fleischer K.,Dolman A.J.,van der Molen M.K.,et al. Nitrogen Deposition Maintains a Positive Effect on Terrestrial Carbon Sequestration in the 21st Century Despite Growing Phosphorus Limitation at Regional Scales[J]. Global Biogeochemical Cycles,2019-01-01,33(6)
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