[1]LIU Xu-hui,YU Xin-xiao,ZHAO Yang.Impact of Landscape Pattern on Runoff in Small Watershed of Beijing Mountainous Region[J].Research of Soil and Water Conservation,2013,20(05):39-44.
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Impact of Landscape Pattern on Runoff in Small Watershed of Beijing Mountainous Region
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
20
Number of periods:
2013 05
Page number:
39-44
Column:
Public date:
2013-10-28
- Title:
- Impact of Landscape Pattern on Runoff in Small Watershed of Beijing Mountainous Region
- Keywords:
- climate change; landscape pattern; plaque; runoff
- CLC:
- S715.3
- DOI:
- -
- Abstract:
- Based on the hydrological data of Hongmenchuan watershed in the years of 1990—2006, and analysis on the characteristic of precipitation, runoff and evaporation, by using the spatial and attribute data, landscape index from the remote sensing images (1990, 1995, 2000, 2005) of Hongmenchuan watershed of Beijing. We analyzed the change on the landscape pattern and the relevance between landscape index and runoff. The results showed: (1) precipitation and runoff of Hongmenchuan watershed mainly concentrated in the flood season (June to September), and annual precipitation and runoff decreased year by year, climate chagne is the main reason for runoff decrease; (2) forestland was mainly land use in Hongmenchuan watershed, the decrease of water area reflected the decease of runoff; (3) the landscape plaque number increased, the overall landscape fragmentation decreased, plaque distribution tends to be uniform, the average patch area (AREA), patch perimeter (PERIM), landscape shape index (LSI), the landscape aggregation (CONTAG) were decreasing year by year; (4) there is a strong correlation between mean patch perimeter, landscape aggregation and runoff, the correlation between average plate area, average fractal dimension and runoff is not significant, and mean patch shape index, landscape shape index, Shannon-Wienner diversity index and runoff are uncorrelated.
- References:
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