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- W2359539901 abstract "Based on the TM data from 1979 and 2008,we studied the vegetation coverage change of Qingshui county which is located in loess hilly-gully region by extracting the NDVI values and analyzing the relationship between NDVI and vegetation cover under the help of the remote sensing digital image processing system and GIS.The results showed that during 1979-2008,the area of NDVI more than 138 was increased to 117603.38hm2 from 52488.13hm2,net increase 65115.25hm2,which accounted for 33.80% of the total area.The lower vegetation coverage decreased largely and the Ⅴ level vegetation area was reduced by 73780.25hm2,accounting for 34.22 % of the total area.By comparison,the higher vegetation coverage increased.The Ⅰ level vegetation area was increased by 33798.07hm2,which occupied 17.54% of the total area.The Ⅱ,Ⅲ level vegetation area were increased at different degrees.The area of the regions without change was 62954.75hm2,which occupied 32.68 % of the total area.The area of vegetation restoration was 117926.75hm2,which was 10.02 times the area of vegetation degradation which was about 11768.25hm2.Through comprehensive treatment,the ecological environment has been improved in Qing Shui County." @default.
- W2359539901 created "2016-06-24" @default.
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- W2359539901 date "2011-01-01" @default.
- W2359539901 modified "2023-09-24" @default.
- W2359539901 title "Changing Analysis of Vegetation in Qingshui County Based on NDVI" @default.
- W2359539901 hasPublicationYear "2011" @default.
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