Spatial and temporal relationships between precipitation and ANPP of four types of grasslands in northern China
文献类型：期刊论文
| 作者 | Guo Ran; Xiao-ke, Wang; Ouyang Zhi-yun; Li Ying-nian |
| 刊名 | journal of environmental sciences-china
 |
| 出版日期 | 2006 |
| 卷号 | 18期号:5页码:1024-1030 |
| 关键词 | above-ground net primary productivity mean annual precipitation spatial sensitivity inter-annual changes |
| 合作状况 | 国内 |
| 中文摘要 | 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 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. |
| WOS标题词 | science & technology ; life sciences & biomedicine |
| 学科主题 | 生物科学 |
| 类目[WOS] | environmental sciences |
| 研究领域[WOS] | environmental sciences & ecology |
| 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记录号 | WOS:000240445400033 |
| 公开日期 | 2009-11-17 |
| 源URL | [http://ir.nwipb.ac.cn/handle/363003/362]  |
| 专题 | 西北高原生物研究所_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. |
入库方式： OAI收割
来源：西北高原生物研究所
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