responsesofgrossprimaryproductivitytodifferentsizesofprecipitationeventsinatemperategrasslandecosystemininnermongoliachina

CORC > 地理科学与资源研究所 > 中国科学院地理科学与资源研究所 > 生态系统研究网络观测与模拟重点实验室 > CERN水分分中心

	responsesofgrossprimaryproductivitytodifferentsizesofprecipitationeventsinatemperategrasslandecosystemininnermongoliachina
	Guo Qun 3; Li Shenggong 3; Hu Zhongmin 3; Zhao Wei 3; Yu Guirui 3; Sun Xiaomin 3; Li Linghao 2; Liang Naishen 1; Bai Wenming 2
刊名	journalofaridland
	2016
卷号	8 期号:1 页码:36
ISSN号	1674-6767
英文摘要	Changes in the sizes of precipitation events in the context of global climate change may have profound impacts on ecosystem productivity in arid and semiarid grasslands. However, we still have little knowledge about to what extent grassland productivity will respond to an individual precipitation event. In this study, we quantified the duration, the maximum, and the time-integrated amount of the response of daily gross primary productivity (GPP) to an individual precipitation event and their variations with different sizes of precipitation events in a typical temperate steppe in Inner Mongolia, China. Results showed that the duration of GPP-response (τ_R) and the maximum absolute GPP-response (GPP_(max)) increased linearly with the sizes of precipitation events (P_(es)), driving a corresponding increase in time-integrated amount of the GPP-response (GPP_(total)) because variations of GPP_(total) were largely explained by τ_R and GPP_(max). The relative contributions of these two parameters to GPP_(total) were strongly Pes-dependent. The GPP_(max) contributed more to the variations of GPP_(total) when P_(es) was relatively small (<20 mm), whereas τ_R was the main driver to the variations of GPP_(total) when P_(es) was relatively large. In addition, a threshold size of at least 5 mm of precipitation was required to induce a GPP-response for the temperate steppe in this study. Our work has important implications for the modeling community to obtain an advanced understanding of productivity-response of grassland ecosystems to altered precipitation regimes.
语种	英语
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/93132]
专题	地理科学与资源研究所_生态系统研究网络观测与模拟重点实验室_CERN水分分中心
作者单位	1.Global Carbon Cycle Research Section Center for Global Environmental Research, National Institute for Environmental Studies 2.中国科学院植物研究所 3.中国科学院地理科学与资源研究所
推荐引用方式 GB/T 7714	Guo Qun,Li Shenggong,Hu Zhongmin,et al. responsesofgrossprimaryproductivitytodifferentsizesofprecipitationeventsinatemperategrasslandecosystemininnermongoliachina[J]. journalofaridland,2016,8(1):36.
APA	Guo Qun.,Li Shenggong.,Hu Zhongmin.,Zhao Wei.,Yu Guirui.,...&Bai Wenming.(2016).responsesofgrossprimaryproductivitytodifferentsizesofprecipitationeventsinatemperategrasslandecosystemininnermongoliachina.journalofaridland,8(1),36.
MLA	Guo Qun,et al."responsesofgrossprimaryproductivitytodifferentsizesofprecipitationeventsinatemperategrasslandecosystemininnermongoliachina".journalofaridland 8.1(2016):36.