Interactive effects of seasonal drought and nitrogen deposition on carbon fluxes in a subtropical evergreen coniferous forest in the East Asian monsoon region

doi:10.1016/j.agrformet.2018.08.009

CORC > 地理科学与资源研究所 > 中国科学院地理科学与资源研究所 > 生态系统研究网络观测与模拟重点实验室 > CERN水分分中心

	Interactive effects of seasonal drought and nitrogen deposition on carbon fluxes in a subtropical evergreen coniferous forest in the East Asian monsoon region
	Li, Pan 1,2; Zhang, Li 3,4; Yu, Guirui 3,4; Liu, Congqiang 1; Ren, Xiaoli 3; He, Honglin 3,4; Liu, Min 5; Wang, Huimin 3; Zhu, Jianxing 3; Ge, Rong 3
刊名	AGRICULTURAL AND FOREST METEOROLOGY
	2018-12-15
卷号	263 页码:90-99
关键词	CLM4.5 Carbon fluxes Seasonal drought Nitrogen deposition Interactive effects
ISSN号	0168-1923
DOI	10.1016/j.agrformet.2018.08.009
通讯作者	Zhang, Li(li.zhang@igsnrr.ac.cn) ; Yu, Guirui(yugr@igsnrr.ac.cn)
英文摘要	Subtropical forests in the East Asian monsoon region function as considerable carbon sinks in the Northern Hemisphere. Forest ecosystems in this region have experienced intensified seasonal drought that has limited their carbon sequestration capacity, but increasing atmospheric nitrogen deposition has contrarily enhanced their capacity to act as carbon sinks. Understanding and quantifying the interactive effects of seasonal drought and nitrogen deposition on the carbon sequestration of subtropical forests is of great significance for accurately predicting future changes to the terrestrial carbon cycle. In this study, we used the Community Land Model Version 4.5 (CLM4.5) to investigate how carbon fluxes, i.e. gross primary productivity (GPP), ecosystem respiration (Re), and net ecosystem productivity (NEP), respond to seasonal drought and nitrogen deposition in an evergreen coniferous forest in southern China. Our results showed that reduced GPP during the drought in the summers of 2003 and 2007 weakened the forest's carbon sequestration capacity. The reduction in GPP mainly occurred at the sunlit canopy due to its higher sensitivity to soil water stress, and non-stomatal limitations played an important role in limiting leaf photosynthesis. The enhanced NEP by nitrogen deposition was attributed to increased plant growth, which could, in turn, be attributed to increases in leaf area. Interactions of seasonal drought and nitrogen deposition varied with drought severity. Interactive effects of the two drivers on GPP, Re, and NEP were additive under mild and moderate drought conditions but non-additive under severe drought. Their net effects on NEP shifted from + 29% under mild and moderate drought conditions to -56% under severe drought. Our study highlights the importance of accounting for the interactive effects of seasonal drought and nitrogen deposition in assessing the carbon sequestration of subtropical forest ecosystems in the East Asian monsoon region.
资助项目	National Key Research and Development Program of China[2016YFC0500204] ; National Basic Research Program of China[2015CB954102] ; National Natural Science Foundation of China[31420103917] ; National Natural Science Foundation of China[41571130043] ; National Natural Science Foundation of China[31290221]
WOS关键词	WATER-USE EFFICIENCY ; TERRESTRIAL ECOSYSTEMS ; MESOPHYLL CONDUCTANCE ; PRIMARY PRODUCTIVITY ; STOMATAL CONDUCTANCE ; SOUTHEASTERN CHINA ; SOIL-WATER ; PHOTOSYNTHESIS ; PLANTATION ; MODEL
WOS研究方向	Agriculture ; Forestry ; Meteorology & Atmospheric Sciences
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000449236500008
资助机构	National Key Research and Development Program of China ; National Basic Research Program of China ; National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/52558]
专题	地理科学与资源研究所_生态系统研究网络观测与模拟重点实验室_CERN水分分中心
通讯作者	Zhang, Li; Yu, Guirui
作者单位	1.Chinese Acad Sci, Inst Geochem, State Key Lab Environm Geochem, Guiyang 550081, Guizhou, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China 4.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China 5.East China Normal Univ, Sch Ecol & Environm Sci, Shanghai Key Lab Urban Ecol Proc & Ecorestorat, Shanghai 200241, Peoples R China
推荐引用方式 GB/T 7714	Li, Pan,Zhang, Li,Yu, Guirui,et al. Interactive effects of seasonal drought and nitrogen deposition on carbon fluxes in a subtropical evergreen coniferous forest in the East Asian monsoon region[J]. AGRICULTURAL AND FOREST METEOROLOGY,2018,263:90-99.
APA	Li, Pan.,Zhang, Li.,Yu, Guirui.,Liu, Congqiang.,Ren, Xiaoli.,...&Zeng, Na.(2018).Interactive effects of seasonal drought and nitrogen deposition on carbon fluxes in a subtropical evergreen coniferous forest in the East Asian monsoon region.AGRICULTURAL AND FOREST METEOROLOGY,263,90-99.
MLA	Li, Pan,et al."Interactive effects of seasonal drought and nitrogen deposition on carbon fluxes in a subtropical evergreen coniferous forest in the East Asian monsoon region".AGRICULTURAL AND FOREST METEOROLOGY 263(2018):90-99.