干旱区生态环境知识资源中心(Arid): Response of a Grassland Ecosystem to Climate Change in a Theoretical Model

Arid

	Response of a Grassland Ecosystem to Climate Change in a Theoretical Model
	Sun Guodong; Mu Mu
来源期刊	Advances in Atmospheric Sciences
ISSN	0256-1530
出版年	2011
卷号	28 期号:6 页码:1266-1278
英文摘要	The response of a grassland ecosystem to climate change is discussed within the context of a theoretical model. An optimization approach, a conditional nonlinear optimal perturbation related to parameter (CNOP-P) approach, was employed in this study. The CNOP-P, a perturbation of moisture index in the theoretical model, represents a nonlinear climate perturbation. Two kinds of linear climate perturbations were also used to study the response of the grassland ecosystem to different types of climate changes. The results show that the extent of grassland ecosystem variation caused by the CNOP-P-type climate change is greater than that caused by the two linear types of climate change. In addition, the grassland ecosystem affected by the CNOP-P-type climate change evolved into a desert ecosystem, and the two linear types of climate changes failed within a specific amplitude range when the moisture index recovered to its reference state. Therefore, the grassland ecosystem response to climate change was nonlinear. This study yielded similar results for a desert ecosystem seeded with both living and wilted biomass litter. The quantitative analysis performed in this study also accounted for the role of soil moisture in the root zone and the shading effect of wilted biomass on the grassland ecosystem through nonlinear interactions between soil and vegetation. The results of this study imply that the CNOP-P approach is a potentially effective tool for assessing the impact of nonlinear climate change on grassland ecosystems.
英文关键词	conditional nonlinear optimal perturbation parameter perturbation CNOP-P grassland ecosystem climate change
类型	Article
语种	英语
收录类别	CSCD
WOS研究方向	Meteorology & Atmospheric Sciences
CSCD记录号	CSCD:4325071
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/335113
作者单位	Sun Guodong, Institute of Atmospheric Physics, Chinese Academy of Sciences, The State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics, Beijing 100029, China.; Mu Mu, Institute of Atmospheric Physics, Chinese Academy of Sciences, Key Laboratory of Ocean Circulation and Wave,Chinese Academy of Sciences;;The State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics, Qingdao, Shandong 266071, China.
推荐引用方式 GB/T 7714	Sun Guodong,Mu Mu. Response of a Grassland Ecosystem to Climate Change in a Theoretical Model[J],2011,28(6):1266-1278.
APA	Sun Guodong,&Mu Mu.(2011).Response of a Grassland Ecosystem to Climate Change in a Theoretical Model.Advances in Atmospheric Sciences,28(6),1266-1278.
MLA	Sun Guodong,et al."Response of a Grassland Ecosystem to Climate Change in a Theoretical Model".Advances in Atmospheric Sciences 28.6(2011):1266-1278.