气候变化领域集成服务门户(CCPortal): The impacts of permafrost change on NPP and implications: A case of the source regions of Yangtze and Yellow Rivers

CCPortal

DOI	10.1007/s11629-011-1004-3
	The impacts of permafrost change on NPP and implications: A case of the source regions of Yangtze and Yellow Rivers
	Fang Yiping; Qin Dahe; Ding Yongjian; Yang Jianping; Xu Keyan
发表日期	2011
ISSN	1672-6316
起始页码	437
结束页码	447
卷号	8 期号:3
英文摘要	This paper studies the relationship between net primary productivity (NPP) and annual average air temperature (GT) at 0cm above ground in permafrost regions by using revised Chikugo NPP model, cubic spline interpolating functions, and nonlinear regression methods. The source regions of the Yangtze and Yellow Rivers were selected as the research areas. Results illustrate that: (1) There is significant non-linear relationship between NPP and GT in various typical years; (2) The maximum value of NPP is 6.17, 5.87, 7.73, and 5.41 DM center dot t center dot hm(-2)center dot a(-1) respectively, and the corresponding GT is 7.1, 10.0, 21.2, and 8.9A degrees C respectively in 1980, 1990, 2000 and 2007; (3) In 1980, the sensitivity of NPP to GT is higher than in 1990, 2000 and 2007. This tendency shows that the NPP presents change from fluctuation to an adaptation process over time; (4) During 1980 similar to 2007, the accumulated NPP was reduced to 8.05, and the corresponding carrying capacity of theoretical livestock reduced by 11%; (5) The shape of the demonstration region of ecological compensation system, livelihood support system, and science appraisal system in the source regions of Yangtze and Yellow Rivers are an important research for increasing the adaptation capacity and balancing protection and development.
英文关键词	The source regions of Yangtze and Yellow Rivers; Permafrost; Ground temperature (GT); Net primary productivity (NPP); Policy adaptation
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Environmental Sciences
来源期刊	JOURNAL OF MOUNTAIN SCIENCE
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/158645
作者单位	Fang, YP (corresponding author), Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China.
推荐引用方式 GB/T 7714	Fang Yiping,Qin Dahe,Ding Yongjian,et al. The impacts of permafrost change on NPP and implications: A case of the source regions of Yangtze and Yellow Rivers[J],2011,8(3).
APA	Fang Yiping,Qin Dahe,Ding Yongjian,Yang Jianping,&Xu Keyan.(2011).The impacts of permafrost change on NPP and implications: A case of the source regions of Yangtze and Yellow Rivers.JOURNAL OF MOUNTAIN SCIENCE,8(3).
MLA	Fang Yiping,et al."The impacts of permafrost change on NPP and implications: A case of the source regions of Yangtze and Yellow Rivers".JOURNAL OF MOUNTAIN SCIENCE 8.3(2011).