Impacts of climate change and human activities on the aboveground production in alpine grasslands: a case study of the source region of the Yellow River, China
文献类型：期刊论文
| 作者 | Xu, Hao-jie1,2; Wang, Xin-ping1; Zhang, Xiao-xiao3 |
| 刊名 | ARABIAN JOURNAL OF GEOSCIENCES
 |
| 出版日期 | 2017 |
| 卷号 | 10期号:1页码:14 |
| 关键词 | Ecosystem function Alpine vegetation Grassland degradation Temperature Grazing |
| ISSN号 | 1866-7511 |
| DOI | 10.1007/s12517-016-2801-3 |
| 通讯作者 | Xu, Hao-jie(xuhj2014@lzb.ac.cn) |
| 英文摘要 | Changes in aboveground net primary productivity (ANPP) in alpine grasslands are the consequence of climate change and human activities, but it is difficult to disentangle their relative contributions. Based on monthly remote-sensed vegetation index and meteorological data during the period 1982-2010, we analysed the long-term variation of annual ANPP in the source region of the Yellow River and quantified the effects of climate and human activities including grazing on ANPP variability, using the Carnegie-Ames-Stanford Approach (CASA) model and the ANPP-based residual trend analysis method. Our results suggested that ANPP increased in 80% of alpine grasslands. Areas with negative changes in ANPP were found mainly in the eastern portion of the region, accounting for 0.3% of alpine grasslands. ANPP was positively correlated with the monthly mean temperature from June to September and the sunshine duration in September at a regional scale. Moreover, ANPP was negatively correlated with the total livestock numbers. Using the residual trend analysis method, we demonstrated that climate and human activities accounted for 76.6 and 23.4%, respectively, of the variability in ANPP for the entire study region in 1982-2010. We concluded that climate change alleviated climatic constraints, in particular temperature limitations and sunshine duration, resulting in a significant increase in ANPP. Overgrazing was supposed to be the primary driver for grassland degradation in the eastern region. Our study has implications for grassland management and its sustainability to minimize the risk of grassland degradation and desertification processes in geoecologically and socially important regions such as the study region in China. |
| 收录类别 | SCI |
| WOS关键词 | QINGHAI-TIBETAN PLATEAU ; NET PRIMARY PRODUCTION ; LAND-USE CHANGE ; ANTHROPOGENIC ACTIVITIES ; SPATIOTEMPORAL CHANGES ; VEGETATION GROWTH ; NDVI ; DEGRADATION ; YANGTZE ; MODELS |
| WOS研究方向 | Geology |
| WOS类目 | Geosciences, Multidisciplinary |
| 语种 | 英语 |
| WOS记录号 | WOS:000392059600017 |
| 出版者 | SPRINGER HEIDELBERG |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2557477 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Xu, Hao-jie |
| 作者单位 | 1.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Shapotou Desert Res & Expt Stn, Lanzhou 730000, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Lanzhou Univ, Sch Phys Sci & Technol, Lanzhou 730000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xu, Hao-jie,Wang, Xin-ping,Zhang, Xiao-xiao. Impacts of climate change and human activities on the aboveground production in alpine grasslands: a case study of the source region of the Yellow River, China[J]. ARABIAN JOURNAL OF GEOSCIENCES,2017,10(1):14. |
| APA | Xu, Hao-jie,Wang, Xin-ping,&Zhang, Xiao-xiao.(2017).Impacts of climate change and human activities on the aboveground production in alpine grasslands: a case study of the source region of the Yellow River, China.ARABIAN JOURNAL OF GEOSCIENCES,10(1),14. |
| MLA | Xu, Hao-jie,et al."Impacts of climate change and human activities on the aboveground production in alpine grasslands: a case study of the source region of the Yellow River, China".ARABIAN JOURNAL OF GEOSCIENCES 10.1(2017):14. |
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来源：寒区旱区环境与工程研究所
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