Vegetation canopy and physiological control of GPP decline during drought and heat wave

Xiangming Xiao1, Yao Zhang2, Sha Zhou3, Heather R McCarthy2, Philippe Ciais4 and Yiqi Luo2, (1)University of Oklahoma Norman Campus, School of Biological Sciences, Norman, United States, (2)University of Oklahoma Norman Campus, Norman, OK, United States, (3)Tsinghua University, Beijing, China, (4)LSCE Laboratoire des Sciences du Climat et de l'Environnement, Gif-Sur-Yvette, France