Distinctive impacts of atmospheric intraseasonal oscillations on the net ecosystem exchange of the southeastern China forest between spring and summer

作     者：Jian-Ying LI Jiang-Yu MAO Jong-Seong KUG Pan-Mao ZHAI 

作者机构：State Key Laboratory of Severe Weather(LASW)and Institute of Climate SystemChinese Academy of Meteorological SciencesBeijing 100081China State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics(LASG)Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing 100029China Division of Environmental Science and EngineeringPohang University of Science and Technology(POSTECH)Pohang 37673South Korea 

出 版 物：《Advances in Climate Change Research》 (气候变化研究进展（英文版）)

年 卷 期：2022年第13卷第5期

页      面：700-709页

核心收录：

学科分类：09[农学] 0903[农学-农业资源与环境] 

基　　金：funded by the National Natural Science Foundation of China(41905076,42175076) the China Postdoctoral Science Foundation(2021M693471) 

主　　题：Intraseasonal oscillation Southeastern China forest Carbon fluxes Global carbon cycle 

摘      要：The southeastern China(SEC)forest is an important terrestrial biospheric carbon sink in the global carbon cycle,with its total net ecosystem exchange(NEE)accounting for about 3.2%of the global forest *** prevailing atmospheric intraseasonal oscillations(ISOs)over East Asia strongly modulate climatic conditions over the SEC during spring and summer,thus leading to significant ISOs in the NEE of the SEC *** atmospheric ISOs show strong seasonality,this study examined the distinctive impacts of atmospheric ISOs on the NEE of the SEC forest between spring and *** spring,the vertical coupling of 10–30-d atmospheric ISOs in the lower and upper troposphere leads to strong 10‒30-d ISOs of solar radiation and temperature over the *** 10‒30-d ISOs of solar radiation and temperature further result in the 10‒30-d ISOs of gross primary productivity(GPP)and terrestrial ecosystem respiration(TER).With the covariation in GPP and TER,the NEE of the SEC forest exhibits significant 10‒30-d *** contrast,the intraseasonal variations in climatic conditions over the SEC are associated with the 15‒60-d tropical atmospheric ISO during *** the induced 15‒60-d ISO of solar radiation leads to that of GPP,the induced 15‒60-d ISO of temperature is small and less effective;thus,the 15‒60-d ISO of NEE mainly originates from that of GPP.