Contrasting Effects of Temperature and Precipitation on Vegetation Greenness along Elevation Gradients of the Tibetan Plateau

文献类型： 外文期刊

第一作者： Wang, Yan

作者： Wang, Yan;Peng, Dailiang;Huang, Wenjiang;Liu, Liangyun;Li, Xinwu;Zheng, Shijun;Wang, Yan;Huang, Wenjiang;Liu, Liangyun;Li, Xinwu;Zheng, Shijun;Shen, Miaogen;Xu, Xiyan;Yang, Xiaohua;Yu, Le;Li, Cunjun;Zhang, Helin;Zhang, Helin

作者机构：

关键词： vegetation greenness; precipitation; temperature; elevational variation; sensitivity; isoline

期刊名称：REMOTE SENSING （ 影响因子：4.848； 五年影响因子：5.353 ）

ISSN：

年卷期： 2020 年 12 卷 17 期

页码：

收录情况： SCI

摘要： The Tibetan Plateau (TP) is one of the most sensitive regions to global climate warming, not only at the inter-annual time scale but also at the altitudinal scale. We aim to investigate the contrasting effects of temperature and precipitation on vegetation greenness at different altitudes across the TP. In this study, interannual and elevational characteristics of the Normalized Difference Vegetation Index (NDVI), temperature, and precipitation were examined during the growing season from 1982 to 2015. We compared the elevational movement rates of the isolines of NDVI, temperature, and precipitation, and the sensitivities of elevational NDVI changes to temperature and precipitation. The results show that from 1982 to 2015, the elevational variation rate of isolines for NDVI mismatched with that for temperature and precipitation. The elevational movements of NDVI isolines were mostly controlled by precipitation at elevations below 2400 m and by the temperature at elevations above 2400 m. Precipitation appears to plays a role similar to temperature, and even a more effective role than the temperature at low elevations, in controlling elevational vegetation greenness changes at both spatial and interannual scales in the TP. This study highlights the regulation of temperature and precipitation on vegetation ecosystems along elevation gradients over the whole TP under global warming conditions.

分类号：

  • 相关文献
作者其他论文 更多>>

微信小程序