Spatial and temporal relationships between precipitation and ANPP of four types of grasslands in northern China

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	Spatial and temporal relationships between precipitation and ANPP of four types of grasslands in northern China
	Guo Ran ; Xiao-ke, Wang ; Ouyang Zhi-yun ; Li Ying-nian
	2006
发表期刊	JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA
卷号	18 期号:5 页码:1024-1030
文章类型	Article
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.; 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 ANPP 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 AN PP 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.
关键词	Above-ground Net Primary Productivity Mean Annual Precipitation Spatial Sensitivity Inter-annual Changes
WOS标题词	Science & Technology ; Life Sciences & Biomedicine
学科领域	生物科学
关键词[WOS]	NET PRIMARY PRODUCTIVITY ; USE EFFICIENCY ; ECOSYSTEM STABILITY ; SHORTGRASS STEPPE ; BIOMASS DYNAMICS ; COMMUNITIES ; BIOMES
收录类别	SCI
语种	英语
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Environmental Sciences
WOS记录号	WOS:000240445400033
引用统计	被引频次：31[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://210.75.249.4/handle/363003/362
专题	中国科学院西北高原生物研究所
作者单位	1.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Key Lab Syst Ecol, Beijing 100085, Peoples R China 2.Chinese Acad Sci, NW Inst Plateau Biol, Xining 810001, Peoples R China
推荐引用方式 GB/T 7714	Guo Ran,Xiao-ke, Wang,Ouyang Zhi-yun,et al. Spatial and temporal relationships between precipitation and ANPP of four types of grasslands in northern China[J]. JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,2006,18(5):1024-1030.
APA	Guo Ran,Xiao-ke, Wang,Ouyang Zhi-yun,&Li Ying-nian.(2006).Spatial and temporal relationships between precipitation and ANPP of four types of grasslands in northern China.JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,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-CHINA 18.5(2006):1024-1030.

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