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| Spatial andtemporal variations of normalized differential vegetation index and its relationship with precipitation in Liaoning Province from 2000 to 2016 |
| LIU Yanwei1*,WANG Shuying2, JIAO Zhongshuai2 |
| 1. Faculty of Agricultural and Food, Kunming University of Science and Technology, Kunming, Yunnan 650500, China; 2. Sino Hydro Bureau 6 Co., Ltd., Shenyang, Liaoning 110179, China |
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Abstract Study on the ecological environment protection and drought early warning. The temporal and spatial changes of the normalized differential vegetation index of Liaoning Province from 2000 to 2016 were analyzed based on MOD13A2 data of MODIS remote sensing image. The correlation between normalized difference vegetation index and precipitation was studied. The results showed that the spatial distribution of the NDVI is more obvious in Liaoning Province. It shows that the eastern was the highest, central and south west was higher, lower in northern, the lowest in western. The annual variation of NDVI value in Liaoning Province shows a trend of increasing fluctuation, and the vegetation coverage is increasing. The seasonal variation of NDVI value in Liaoning province presents a single peak type. The maximum is basically in July, and the minimum is in May. There is a correlation between NDVI and precipitation. There is a certain lag between the NDVI and precipitation.
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Received: 04 February 2020
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