文献类型：期刊文献

英文题名：Productivity and water use efficiency of Pinus tabulaeformis responses to climate change in the temperate monsoon region

作者：Xu, Lingling[1] Meng, Ping[2,3] Tong, Xiaojuan[1] Zhang, Jinsong[2,3] Li, Jun[4] Wang, Xin[1] Xie, Han[1] Liu, Peirong[1]

第一作者：Xu, Lingling

通信作者：Tong, XJ[1]

机构：[1]Beijing Forestry Univ, Sch Ecol & Nat Conservat, Beijing 100083, Peoples R China;[2]Chinese Acad Forestry, Res Inst Forestry, Key Lab Tree Breeding & Cultivat, State Forestry Adm, Beijing 100091, Peoples R China;[3]Henan Xiaolangdi Earth Crit Zone Natl Res Stn Midd, Jiyuan 454650, Peoples R China;[4]Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing 100101, Peoples R China

年份：2022

卷号：327

外文期刊名：AGRICULTURAL AND FOREST METEOROLOGY

收录：;Scopus(收录号：2-s2.0-85140998422);WOS:【SCI-EXPANDED(收录号:WOS:000883763900002)】；

基金：Acknowledgments This study was funded by the National Key R & D Program of China (2020YFA0608101) , the National Natural Science Foundation of China (31872703, 31570617) .

语种：英文

外文关键词：Pinus tabulaeformis; Productivity; Intrinsic water use efficiency; Climate change

摘要：As one of the main afforestation species, Pinus tabulaeformis is an important carbon sink in China. We developed tree-ring chronologies of Pinus tabulaeformis at five plantation sites (Lingkong Mountain (LKM), Fujia (FJ), Heishui (HS), Caijiachuan (CJC) and Jiufeng (JF)), and measured the delta 13C values of tree rings using the stable carbon isotope method to calculate intrinsic water use efficiency (iWUE). The responses of net primary pro-ductivity (NPP) and iWUE to climatic variables were explored. The annual variation in both NPP and iWUE had increasing trends, with lower iWUE increasing rate at LKM site in comparison with those at other 4 sites. iWUE of the young stand was higher than that of the old stand. Annual patterns of the delta 13C values showed significant decreasing trends in LKM and CJC but a rising trend in HS. The growth of Pinus tabulaeformis was more sensitive to temperatures, and temperatures exerted positive effects on NPP and iWUE. At the old stands, both NPP and iWUE had closer relationships with temperatures. On the annual scale, precipitation had little effect on NPP and iWUE. Annual mean standardized precipitation evaporation index had a significant influence on iWUE at the young stand. Resistance was positively correlated with recovery, resilience and iWUE, but negatively correlated with NPP. Pinus tabulaeformis at CJC site had the stronger resistance to drought events in comparison with that at LKM and FJ sites. This study provides insight into the responses of Pinus tabulaeformis productivity and water use to climate change, and helps evaluate carbon sink and water-carbon trade-off of plantations.