Spatiotemporal dynamics of aboveground primary productivity along a precipitation gradient in chinese temperate grassland
文献类型：期刊论文
| 作者 | Hu ZhongMin; Fan JiangWen; Zhong HuaPing; Yu GuiRui |
| 刊名 | Science in china series d-earth sciences
 |
| 出版日期 | 2007-05-01 |
| 卷号 | 50期号:5页码:754-764 |
| 关键词 | Grassland transect Spatial variance Temporal variance Temperature Precipitation gradient Inner mongolia |
| ISSN号 | 1006-9313 |
| DOI | 10.1007/s11430-007-0010-3 |
| 通讯作者 | Fan jiangwen(fanjw@igsnrr.ac.cn) |
| 英文摘要 | Investigating the spatial and temporal variance in productivity along natural precipitation gradients is one of the most efficient approaches to improve understanding of how ecosystems respond to climate change. in this paper, by using the natural precipitation gradient of the inner mongolian plateau from east to west determined by relatively long-term observations, we analyzed the temporal and spatial dynamics of aboveground net primary productivity (anpp) of the temperate grasslands covering this region. across this grassland transect, anpp increased exponentially with the increase of mean annual 005map precipitation (map) (anpp=24.47e(0.005map), r-2=0.48). values for the three vegetation types desert steppe, typical steppe, and meadow steppe were: 60.86 gm(-2)a(-1), 167.14 gm(-2)a(-1) and 288.73 gm(-2)a(-1) respectively. by contrast, temperature had negative effects on anpr the moisture index (k), which takes into account both precipitation and temperature could explain the spatial variance of anpp better than map alone (anpp=2020.34k(1.24), r-2=0.57). temporally, we found that the inter-annual variation in anpp (calculated as the coefficient of variation, cv) got greater with the increase of aridity. however, this trend was not correlated with the inter-annual variation of precipitation. for all of the three vegetation types, anpp had greater inter-annual variation than annual precipitation (ppt). their difference (anpp cv/ppt cv) was greatest in desert steppe and least in meadow steppe. our results suggest that in more and regions, grasslands not only have lower productivity, but also higher inter-annual variation of production. climate change may have significant effects on the productivity through changes in precipitation pattern, vegetation growth potential, and species diversity. |
| WOS关键词 | NET PRIMARY PRODUCTIVITY ; USE EFFICIENCY ; UNITED-STATES ; TERRESTRIAL ECOSYSTEMS ; GREAT-PLAINS ; PATTERNS ; NITROGEN ; CARBON ; VARIABILITY ; BIOMASS |
| WOS研究方向 | Geology |
| WOS类目 | Geosciences, Multidisciplinary |
| 语种 | 英语 |
| WOS记录号 | WOS:000247177900012 |
| 出版者 | SCIENCE CHINA PRESS |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2382976 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Fan JiangWen |
| 作者单位 | 1.Chinese Acad Sci, Key Lab Ecosyst Network Observ & Modeling, CERN, Ctr Synthesis Res,Inst Geog Sci & Nat Resources R, Beijing 100101, Peoples R China 2.Grad Univ, Chinese Acad Sci, Beijing 100039, Peoples R China |
| 推荐引用方式 GB/T 7714 | Hu ZhongMin,Fan JiangWen,Zhong HuaPing,et al. Spatiotemporal dynamics of aboveground primary productivity along a precipitation gradient in chinese temperate grassland[J]. Science in china series d-earth sciences,2007,50(5):754-764. |
| APA | Hu ZhongMin,Fan JiangWen,Zhong HuaPing,&Yu GuiRui.(2007).Spatiotemporal dynamics of aboveground primary productivity along a precipitation gradient in chinese temperate grassland.Science in china series d-earth sciences,50(5),754-764. |
| MLA | Hu ZhongMin,et al."Spatiotemporal dynamics of aboveground primary productivity along a precipitation gradient in chinese temperate grassland".Science in china series d-earth sciences 50.5(2007):754-764. |
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来源：中国科学院大学
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