Drought trends based on the VCI and its correlation with climate factors in the agricultural areas of China from 1982 to 2010
作者： Xiaojin Qian , Liang Liang , Qiu Shen , Qin Sun , Lianpeng Zhang
DOI: 10.1007/S10661-016-5657-9
关键词:
摘要: Drought is a type of natural disaster that has the most significant impacts on agriculture. Regional drought monitoring based remote sensing become popular due to development technology. In this study, vegetation condition index (VCI) data recorded from 1982 2010 in agricultural areas China were obtained advanced very high resolution radiometer (AVHRR) data, and temporal spatial variations each analyzed. The relationships between climate factors also results showed 2010, experienced frequent severe droughts mainly concentrated northwestern Huang-Huai Plain. Moreover, VCI increased majority areas, indicating frequency decreased over time, decreasing trend southern region was more notable than northern region. A correlation analysis temperature wind velocity main influenced China. From regional perspective, excluding precipitation, had various effects different regions. However, precipitation low, possibly widespread use artificial irrigation technology, which reduces reliance precipitation.
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