[1]LIU Feng,YANG Guang,HAN Xueying,et al.Dynamic Monitoring of Eco-environmental Quality in Horqin Sandy Land by Remote Sensing-A Case Study of Naiman Banner[J].Research of Soil and Water Conservation,2020,27(05):244-249,258.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
27
Number of periods:
2020 05
Page number:
244-249,258
Column:
目次
Public date:
2020-08-20
- Title:
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Dynamic Monitoring of Eco-environmental Quality in Horqin Sandy Land by Remote Sensing-A Case Study of Naiman Banner
- Author(s):
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LIU Feng, YANG Guang, HAN Xueying, JIA Guangpu, WANG Ning
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(College of Desert Control Science and Engineering, Inner Mongolia Agricultural University, Hohhot 010018, China)
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- Keywords:
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Naiman Banner; ecological environment; remote sensing based ecological index; principal component analysis
- CLC:
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P964
- DOI:
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-
- Abstract:
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Due to ecological civilization construction and rapid urbanization in Horqin Sandy land,timely monitoring of ecological environment quality is particularly important. Normalized difference vegetation index(NDVI), wetness index(WET), build-up and soil index(NDSI)and land surface temperature(LST)in Naiman Banner were calculated by using Landsat 5/TM and Landsat 8/OLI images in 2000, 2006, 2012 and 2017. Principal component analysis was used to construct RSEI ecological index model to dynamically monitored and evaluated the environmental quality changes in Naiman Banner from 2000 to 2018. The results show that NDVI and WET played the positive roles in the eco-environment quality of Naiman Banner, while NDSI and LST had the negative effect; the RSEI mean value increased 0.232 6 from 2000 to 2018, and the increase rate was 76.49%; the area of the poor and the relatively poorer co-environment quality reduced by 1 654.06 km2, the excellent grade increased by as much as 1 048.72 km2 and the poor and the relatively poorer areas mainly distributed in the middle sand area; during the study period, the improvement area of the eco-environment quality was larger than that of degradation area, the improvement area reached its peak during the period from 2000 to 2006, reaching 5 327.6 km2 and accounting for 65.77% of the total area, the degradation area mainly concentrated in the middle sand area; the overall eco-environment of Naiman Banner showed the reversed trend and tended to be stable, but local degradation still occurred.