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Dynamic monitoring of water erosion desertification in Dianchi watershed based on RS and GIS |
| SHI Qingyun1, ZHAO Zhifang1, SONG Kun2, YAN Jieru1 |
1. School of Resource Environment and Earth Sciences, Yunnan University, Kunming 650091,China;
2. Faculty of LandResource Engineering, Kunming University of Science and Technology, Kunming 650091, China |
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Abstract Most of the Dianchi watershed is in the fragile ecological environment, which desertification problem is very prominent. This research extracted water erosion desertification from remote sensing images of Dianchi watershed in 2000, 2008 and 2015 by RS and GIS technology. The results show that the water erosion desertification mainly distributed in the northeast and south of the study area, and the overall trend is decreasing. The area of water erosion desertification decreased 78.44 km2 from 2000 to 2008, decreased 9.81 km2 every year; the area of water erosion desertification decreased 218.89 km2 from 2008 to 2015, decreased 27.36 km2 every year. People had closed hillsides to facilitate afforestation, reforested and modified of land use patterns improving water erosion desertification phenomenon of Dianchi watershed, in recent years.
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| Keywords
geostationary earth orbit
microwave atmospheric sounding
interference synthetic aperture antenna systems
real aperture antenna system
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Issue Date: 24 November 2017
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2017,
Vol. 29
