Remote Sensing | |
Characterization of Drought Development through Remote Sensing: A Case Study in Central Yunnan, China | |
Sawaid Abbas1  Janet E. Nichol1  Faisal M. Qamer2  | |
[1] Department of Land Surveying and Geo-Informatics, The Hong Kong Polytechnic University, Kowloon, Hong Kong; E-Mail:;International Center for Integrated Mountain Development (ICIMOD), Kathmandu 44700, Nepal; E-Mail: | |
关键词: NDVI; NVSWI; drought index; LST; TRMM; | |
DOI : 10.3390/rs6064998 | |
来源: mdpi | |
【 摘 要 】
This study assesses the applicability of remote sensing data for retrieval of key drought indicators including the degree of moisture deficiency, drought duration and areal extent of drought within different land cover types across the landscape. A Normalized Vegetation Supply Water Index (NVSWI) is devised, combining remotely sensed climate data to retrieve key drought indicators over different vegetation cover types and a lag-time relationship is established based on preceding rainfall. The results indicate that during the major drought event of spring 2010, Evergreen Forest (EF) experienced severe dry conditions for 48 days fewer than Cropland (CL) and Shrubland (SL). Testing of vegetation response to drought conditions with different lag-time periods since the last rainfall indicated a highest correlation for CL and SL with the 4th lag period (
【 授权许可】
CC BY
© 2014 by the authors; licensee MDPI, Basel, Switzerland
【 预 览 】
Files | Size | Format | View |
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RO202003190025550ZK.pdf | 694KB | download |