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Climatic anomaly and its impact on vegetation phenology, carbon sequestration and water-use efficiency at a humid temperate forest
Zheng, Chen1; Tang, Xuguang1,2; Gu, Qing1; Wang, Tongxin1; Wei, Jin1; Song, Lisheng1; Ma, Mingguo1,3
2018-10-01
Source PublicationJOURNAL OF HYDROLOGY
ISSN0022-1694
Volume565Pages:150-159
Corresponding AuthorTang, Xuguang(xgtang@swu.edu.cn)
AbstractChanging 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.
KeywordExtreme weather events Forest Carbon fixation Water-use efficiency
DOI10.1016/j.jhydrol.2018.08.012
WOS KeywordNET ECOSYSTEM EXCHANGE ; LAND-SURFACE PHENOLOGY ; VAPOR-PRESSURE DEFICIT ; EDDY COVARIANCE ; INTERANNUAL VARIABILITY ; GLOBAL CHANGE ; ENVIRONMENTAL CONTROLS ; PRIMARY PRODUCTIVITY ; NORTHERN-HEMISPHERE ; SPRING PHENOLOGY
Indexed BySCI
Language英语
Funding ProjectNational 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]
Funding OrganizationNational 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
WOS Research AreaEngineering ; Geology ; Water Resources
WOS SubjectEngineering, Civil ; Geosciences, Multidisciplinary ; Water Resources
WOS IDWOS:000447477200013
PublisherELSEVIER SCIENCE BV
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/52702
Collection中国科学院地理科学与资源研究所
Corresponding AuthorTang, Xuguang
Affiliation1.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
Recommended Citation
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.
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