[1]LU Jianglin,LI Yangbing.Land Use/Cover Change and Its Landscape Ecological Risk Evolution in the Drinking Water Source of Hongfeng Lake in Guiyang[J].Research of Soil and Water Conservation,2015,22(06):229-233,239.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
22
Number of periods:
2015 06
Page number:
229-233,239
Column:
Public date:
2015-12-28
- Title:
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Land Use/Cover Change and Its Landscape Ecological Risk Evolution in the Drinking Water Source of Hongfeng Lake in Guiyang
- Author(s):
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LU Jianglin1, LI Yangbing2
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1. Institute of Safety and Pollution Control of Atmospheric Environment, Ji’nan University, Guangzhou 510632, China;
2. School of Geography and Environmental Sciences, Guizhou Normal University, Guiyang 550001, China
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- Keywords:
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drinking water source; conservation district; land use/cover change; transition matrixes of land use; evolution of ecological risk
- CLC:
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X37
- DOI:
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- Abstract:
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The drinking water source of Hongfeng Lake in Guiyang City was selected as the study area. Based on three different periods of TM remote sensing image interpreting data in 1991, 2007 and 2013: from the angel of ecological risk assessment, using ArcGIS, ERDAS IMAGING terrace, and according to network sampling and Kriging interpolation we examined the changing of land utilization and regional landscape ecological risk in different time and range of Hongfeng Lake district. The results showed that the main ecological risk grade was moderate in recent 22 years. The area ratios of extremely low ecological risk, low ecological risk and moderate ecological risk fell slightly during the periods from 1991 to 2007. However, the area ratios of extremely low ecological risk, low ecological risk and extremely high ecological risk increased dramatically during the periods from 2007 to 2013. The transfer of land utilization mainly occurred in woodland, construction lands which present the ascendant trend and arable land which showed the decline trend.