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Patterns and drivers of atmospheric nitrogen deposition retention in global forests

文献类型：期刊论文

作者Lin, Quanhong2,3; Zhu, Jianxing3; Wang, Qiufeng2,3; Zhang, Qiongyu1; Yu, Guirui2,3
刊名GLOBAL CHANGE BIOLOGY
出版日期2024-07-01
卷号30期号:7页码:e17410
关键词N-15 tracer ammonium forest nitrate nitrogen allocation nitrogen retention plant organs
DOI10.1111/gcb.17410
产权排序1
文献子类Article
英文摘要Forests are the largest carbon sink in terrestrial ecosystems, and the impact of nitrogen (N) deposition on this carbon sink depends on the fate of external N inputs. However, the patterns and driving factors of N retention in different forest compartments remain elusive. In this study, we synthesized 408 observations from global forest N-15 tracer experiments to reveal the variation and underlying mechanisms of N-15 retention in plants and soils. The results showed that the average total ecosystem N-15 retention in global forests was 63.04 +/- 1.23%, with the soil pool being the main N sink (45.76 +/- 1.29%). Plants absorbed 17.28 +/- 0.83% of N-15, with more allocated to leaves (5.83 +/- 0.63%) and roots (5.84 +/- 0.44%). In subtropical and tropical forests, N-15 was mainly absorbed by plants and mineral soils, while the organic soil layer in temperate forests retained more N-15. Additionally, forests retained more (NH4+)-N-15 than (NO3-)-N-15 , primarily due to the stronger capacity of the organic soil layer to retain (NH4+)-N-15. The mechanisms of N-15 retention varied among ecosystem compartments, with total ecosystem N-15 retention affected by N deposition. Plant N-15 retention was influenced by vegetative and microbial nutrient demands, while soil N-15 retention was regulated by climate factors and soil nutrient supply. Overall, this study emphasizes the importance of climate and nutrient supply and demand in regulating forest N retention and provides data to further explore the impacts of N deposition on forest carbon sequestration.
WOS关键词APPLYING N-15-LABELED UREA ; SOIL ORGANIC-MATTER ; TEMPERATE FOREST ; N-DEPOSITION ; N-15 TRACER ; CARBON SEQUESTRATION ; GROWTH-RESPONSE ; PINUS-RADIATA ; TERRESTRIAL ECOSYSTEMS ; DIFFERENT FREQUENCIES
WOS研究方向Biodiversity & Conservation ; Environmental Sciences & Ecology
WOS记录号WOS:001265397000001
源URL[http://ir.igsnrr.ac.cn/handle/311030/206084]  
专题生态系统网络观测与模拟院重点实验室_外文论文
通讯作者Zhu, Jianxing
作者单位1.Tianjin Univ, Inst Surface Earth Syst Sci, Sch Earth Syst Sci, Tianjin, Peoples R China
2.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing, Peoples R China
3.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China
推荐引用方式
GB/T 7714		 Lin, Quanhong,Zhu, Jianxing,Wang, Qiufeng,et al. Patterns and drivers of atmospheric nitrogen deposition retention in global forests[J]. GLOBAL CHANGE BIOLOGY,2024,30(7):e17410.
APA Lin, Quanhong,Zhu, Jianxing,Wang, Qiufeng,Zhang, Qiongyu,&Yu, Guirui.(2024).Patterns and drivers of atmospheric nitrogen deposition retention in global forests.GLOBAL CHANGE BIOLOGY,30(7),e17410.
MLA Lin, Quanhong,et al."Patterns and drivers of atmospheric nitrogen deposition retention in global forests".GLOBAL CHANGE BIOLOGY 30.7(2024):e17410.

入库方式： OAI收割

来源：地理科学与资源研究所

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