Contributions of natural and human factors to increases in vegetation productivity in China
文献类型：期刊论文
| 作者 | Xiao, Jingfeng1; Zhou, Yu1; Zhang, Li1 |
| 刊名 | ECOSPHERE
 |
| 出版日期 | 2015 |
| 卷号 | 6期号:11页码:5015-5030 |
| 关键词 | afforestation attribution carbon dioxide carbon fluxes climate change coupled natural and human systems crop yield greening human activities management practices NDVI nitrogen deposition |
| 通讯作者 | Xiao, JF (reprint author), Nanjing Univ Informat Sci & Technol, Sch Appl Meteorol, Int Ctr Ecol Meteorol & Environm, Nanjing 210044, Jiangsu, Peoples R China. |
| 英文摘要 | Increasing trends in vegetation productivity have been identified for the last three decades for many regions in the northern hemisphere including China. Multiple natural and human factors are possibly responsible for the increases in vegetation productivity, while their relative contributions remain unclear. Here we analyzed the long-term trends in vegetation productivity in China using the satellite-derived normalized difference vegetation index (NDVI) and assessed the relationships of NDVI with a suite of natural (air temperature, precipitation, photosynthetically active radiation (PAR), atmospheric carbon dioxide (CO2) concentrations, and nitrogen (N) deposition) and human (afforestation and improved agricultural management practices) factors. Overall, China exhibited an increasing trend in vegetation productivity with an increase of 2.7%. At the provincial scale, eleven provinces exhibited significant increases in vegetation productivity, and the majority of these provinces are located within the northern half of the country. At the national scale, annual air temperature was most closely related to NDVI and explained 36.8% of the variance in NDVI, followed by afforestation (25.5%) and crop yield (15.8%). Altogether, temperature, total forest plantation area, and crop yield explained 78.1% of the variance in vegetation productivity at the national scale, while precipitation, PAR, atmospheric CO2 concentrations, and N deposition made no significant contribution to the increases in vegetation productivity. At the provincial scale, each factor explained a part of the variance in NDVI for some provinces, and the increases in NDVI for many provinces could be attributed to the combined effects of multiple factors. Crop yield and PAR were correlated with NDVI for more provinces than were other factors, indicating that both elevated crop yield resulting from improved agricultural management practices and increasing diffuse radiation were more important than other factors in increasing vegetation productivity at the provincial scale. The relative effects of the natural and human factors on vegetation productivity varied with spatial scale. The true contributions of multiple factors can be obscured by the correlation among these variables, and it is essential to examine the contribution of each factor while controlling for other factors. Future changes in climate and human activities will likely have larger influences on vegetation productivity in China. |
| 研究领域[WOS] | Ecology |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000367310600024 |
| 源URL | [http://ir.ceode.ac.cn/handle/183411/38362]  |
| 专题 | 遥感与数字地球研究所_SCI/EI期刊论文_期刊论文 |
| 作者单位 | 1.[Xiao, Jingfeng] Nanjing Univ Informat Sci & Technol, Sch Appl Meteorol, Int Ctr Ecol Meteorol & Environm, Nanjing 210044, Jiangsu, Peoples R China 2.[Xiao, Jingfeng] Univ New Hampshire, Inst Study Earth Oceans & Space, Earth Syst Res Ctr, Durham, NH 03824 USA 3.[Zhou, Yu 4.Zhang, Li] Chinese Acad Sci, Inst Remote Sensing & Digital Earth, Key Lab Digital Earth Sci, Beijing 100094, Peoples R China 5.[Zhou, Yu] Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xiao, Jingfeng,Zhou, Yu,Zhang, Li. Contributions of natural and human factors to increases in vegetation productivity in China[J]. ECOSPHERE,2015,6(11):5015-5030. |
| APA | Xiao, Jingfeng,Zhou, Yu,&Zhang, Li.(2015).Contributions of natural and human factors to increases in vegetation productivity in China.ECOSPHERE,6(11),5015-5030. |
| MLA | Xiao, Jingfeng,et al."Contributions of natural and human factors to increases in vegetation productivity in China".ECOSPHERE 6.11(2015):5015-5030. |
入库方式： OAI收割
来源：遥感与数字地球研究所
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