干旱区生态环境知识资源中心(Arid): Spatial and temporal relationships between precipitation and ANPP of four types of grasslands in northern China

Arid

DOI	10.1016/S1001-0742(06)60033-8
	Spatial and temporal relationships between precipitation and ANPP of four types of grasslands in northern China
	Guo Ran; Wang Xiaoke; Ouyang Zhiyun; Li Yingnian
来源期刊	Journal of Environmental Sciences
ISSN	1001-0742
出版年	2006
卷号	18 期号:5 页码:1024-1030
英文摘要	Precipitation is considered to be the primary resource limiting terrestrial biological activity in water-limited regions. Its overriding effect on the production of grassland is complex. In this paper, field data of 48 sites (including temperate meadow steppe,temperate steppe, temperate desert steppe and alpine meadow) were gathered from 31 published papers and monographs to analyze the relationship between above-ground net primary productivity (ANPP) and precipitation by the method of regression analysis. The results indicated that there was a great difference between spatial pattern and temporal pattern by which precipitation influenced grassland ANPP. Mean annual precipitation (MAP) was the main factor determining spatial distribution of grassland ANPP (r~2 = 0.61,P ＜ 0.01); while temporally, no significant relationship was found between the variance of AN PP and inter-annual precipitation for the four types of grassland. However, after dividing annual precipitation into monthly value and taking time lag effect into account, the study found significant relationships between ANPP and precipitation. For the temperate meadow steppe, the key variable determining inter-annual change of ANPP was last August-May precipitation (r~2= 0.47, P = 0.01); for the temperate steppe, the key variable was July precipitation (r~2 = 0.36, P = 0.02); for the temperate desert steppe, the key variable was April-June precipitation (r~2 = 0.51, P ＜0.01); for the alpine meadow, the key variable was last September-May precipitation (r~2 = 0.29, P ＜ 0.05). In comparison with analogous research, the study demonstrated that the key factor determining inter-annual changes of grassland ANPP was the cumulative precipitation in certain periods of that year or the previous year.
英文关键词	above-ground net primary productivity mean annual precipitation spatial sensitivity inter-annual changes
类型	Article
语种	英语
收录类别	CSCD
WOS研究方向	Environmental Sciences & Ecology
CSCD记录号	CSCD:2430205
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/334904
作者单位	Guo Ran, Research Center for Eeo-Environmental Sciences, Chinese Academy of Sciences, Key Lab of Systems Ecology, CAS, Beijing 100085, China.; Wang Xiaoke, Research Center for Eeo-Environmental Sciences, Chinese Academy of Sciences, Key Lab of Systems Ecology, CAS, Beijing 100085, China.; Ouyang Zhiyun, Research Center for Eeo-Environmental Sciences, Chinese Academy of Sciences, Key Lab of Systems Ecology, CAS, Beijing 100085, China.; Li Yingnian, Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining, Qinghai 810001, China.
推荐引用方式 GB/T 7714	Guo Ran,Wang Xiaoke,Ouyang Zhiyun,et al. Spatial and temporal relationships between precipitation and ANPP of four types of grasslands in northern China[J],2006,18(5):1024-1030.
APA	Guo Ran,Wang Xiaoke,Ouyang Zhiyun,&Li Yingnian.(2006).Spatial and temporal relationships between precipitation and ANPP of four types of grasslands in northern China.Journal of Environmental Sciences,18(5),1024-1030.
MLA	Guo Ran,et al."Spatial and temporal relationships between precipitation and ANPP of four types of grasslands in northern China".Journal of Environmental Sciences 18.5(2006):1024-1030.