[1]ZHENG Ling-fang,HAO Fang-hua,YANG Sheng-tian.RS-based Analysis of Land Cover Change in the Region Surrounding Tianshengqiao No.1 Hydropower Reservoir Before and After Its Construction[J].Research of Soil and Water Conservation,2005,12(02):80-82,85.
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RS-based Analysis of Land Cover Change in the Region Surrounding Tianshengqiao No.1 Hydropower Reservoir Before and After Its Construction
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
12
Number of periods:
2005年02期
Page number:
80-82,85
Column:
Public date:
1900-01-01
- Title:
- RS-based Analysis of Land Cover Change in the Region Surrounding Tianshengqiao No.1 Hydropower Reservoir Before and After Its Construction
- CLC:
- X176;TP79
- DOI:
- -
- Abstract:
- According to 1987 and 2002 TM images of the surrounding region of Tianshengqiao No.1 hydropower reservoir in upper reaches of the Hongshuihe River,land cover change between before and after its construction was analyzed and two land use maps were made respectively.FRAGSTATS calculation method was used to analyze seven representative quantitative indices of the landscape spatial structure and heterogeneity. Result showed that land cover in the region surrounding Tianshengqiao No.1 hydropower was moderately influenced by the construction.The shrub cover decreased from 33% to 20%,and grasslands increased from 31% to 39% over the study period.The change in land cover from shrub-dominated to grass-dominated implies certain degree of land degradation, which needs to be monitored.The analysis of landscape spatial structure and landscape heterogeneity showed that in the past 15 years,landscape spatial pattern in the region has tended to become fragmented and diversified,which indicated that the construction of the hydropower may have had other important effects on landscape pattern.
- References:
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Last Update:
1900-01-01