Climatic anomaly and its impact on vegetation phenology, carbon sequestration and water-use efficiency at a humid temperate forest

doi:10.1016/j.jhydrol.2018.08.012

	Climatic anomaly and its impact on vegetation phenology, carbon sequestration and water-use efficiency at a humid temperate forest
	Zheng, Chen 1; Tang, Xuguang 1,2; Gu, Qing 1; Wang, Tongxin 1; Wei, Jin 1; Song, Lisheng 1; Ma, Mingguo 1,3
刊名	JOURNAL OF HYDROLOGY
	2018-10-01
卷号	565 页码:150-159
关键词	Extreme weather events Forest Carbon fixation Water-use efficiency
ISSN号	0022-1694
DOI	10.1016/j.jhydrol.2018.08.012
通讯作者	Tang, Xuguang(xgtang@swu.edu.cn)
英文摘要	Changing climate, especially extreme weather event, is exerting considerable impacts on the hydrological and biogeochemical processes in forests worldwide. A deep understanding of climate change terrestrial feedbacks is essential to predict future regional/global carbon and water budgets, which can be used to develop potential strategies for forest management. In this study, totally 11 years of eddy covariance tower measurements of CO2 and H2O fluxes, as well as the relevant environmental variables were analyzed to reveal the effects of climate anomalies on vegetation phenology, carbon sequestration and ecosystem water-use efficiency (WUE) dynamics in a humid temperate deciduous forest. Warmer spring temperatures altered the phenological phases with the green-up date advanced approximately 3.5 days per degrees C, and the extended growing season of about 3 days per degrees C, reaching the peak in 2012. Because of spring temperature anomaly, the shift from carbon source to sink occurred nearly 40 days earlier than usual. But the abnormal carbon dynamics happened during the peak growth period. Correlation analyses indicated that the amount of precipitation dominantly controlled the capacity of forest carbon sequestration (NEP) in this area. Therefore, the subsequent water scarcity owing to the extremely dry summer together with heatwave severely decreased the forest NEP by about 64.1%. Further analyses implied that the sharp reduction in gross primary production (GPP) rather than ecosystem respiration (Re) resulted to the decrease in NEP. Both GPP and evatranspiration (ET) were larger during the springtime in 2012 than those at adjacent years. But severe summer drought reduced the ecosystem WUE and yielded the lowest GPP and ET. Further work must focus on improving the recognition of forest feedback to climate systems.
资助项目	National Natural Science Foundation of China[41771361] ; National Natural Science Foundation of China[41401221] ; Chongqing Basic and Frontier Research Program[cstc2018jcyjAX0056] ; Fundamental Research Funds for the Central Universities in China[SWU116088] ; Fundamental Research Funds for the Central Universities in China[XDJK2018C017] ; China Postdoctoral Science Foundation[2017M610109] ; National-level College Students' Innovative Entrepreneurial Training Plan Program[201710635007]
WOS关键词	NET ECOSYSTEM EXCHANGE ; LAND-SURFACE PHENOLOGY ; VAPOR-PRESSURE DEFICIT ; EDDY COVARIANCE ; INTERANNUAL VARIABILITY ; GLOBAL CHANGE ; ENVIRONMENTAL CONTROLS ; PRIMARY PRODUCTIVITY ; NORTHERN-HEMISPHERE ; SPRING PHENOLOGY
WOS研究方向	Engineering ; Geology ; Water Resources
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000447477200013
资助机构	National Natural Science Foundation of China ; Chongqing Basic and Frontier Research Program ; Fundamental Research Funds for the Central Universities in China ; China Postdoctoral Science Foundation ; National-level College Students' Innovative Entrepreneurial Training Plan Program
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/52701]
专题	中国科学院地理科学与资源研究所
通讯作者	Tang, Xuguang
作者单位	1.Southwest Univ, Sch Geog Sci, Chongqing Engn Res Ctr Remote Sensing Big Data Ap, Chongqing 400715, Peoples R China 2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China 3.Southwest Univ, Sch Geog Sci, Minist Nat Resources, Res Base Karst Ecoenvironm Nanchuan Chongqing, Chongqing 400715, Peoples R China
推荐引用方式 GB/T 7714	Zheng, Chen,Tang, Xuguang,Gu, Qing,et al. Climatic anomaly and its impact on vegetation phenology, carbon sequestration and water-use efficiency at a humid temperate forest[J]. JOURNAL OF HYDROLOGY,2018,565:150-159.
APA	Zheng, Chen.,Tang, Xuguang.,Gu, Qing.,Wang, Tongxin.,Wei, Jin.,...&Ma, Mingguo.(2018).Climatic anomaly and its impact on vegetation phenology, carbon sequestration and water-use efficiency at a humid temperate forest.JOURNAL OF HYDROLOGY,565,150-159.
MLA	Zheng, Chen,et al."Climatic anomaly and its impact on vegetation phenology, carbon sequestration and water-use efficiency at a humid temperate forest".JOURNAL OF HYDROLOGY 565(2018):150-159.