Impact of Landscape Pattern Change on Runoff in Chaohe River Watershed

LOU Junpeng; ZHANG Zhiqiang; GUO Junting; XIANG Yangxu; YAO Ankun; HE Tiezhang

doi:10.13961/j.cnki.stbctb.2015.04.008

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Impact of Landscape Pattern Change on Runoff in Chaohe River Watershed

- Impact of Landscape Pattern Change on Runoff in Chaohe River Watershed
- Bulletin of Soiland Water Conservation Vol. 35, Issue 4, Pages: 34-39(2015)
- 作者机构：
  
  1. 北京林业大学水土保持与荒漠化防治教育部重点实验室,北京,100083
  2. 北京林业大学环境科学与工程学院,北京,100083
  3. 河北省丰宁县林业局, 丰宁,068350
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.2015.04.008
  CLC：
- Published：2015
- 稿件说明：
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LOU Junpeng, ZHANG Zhiqiang, GUO Junting, et al. Impact of Landscape Pattern Change on Runoff in Chaohe River Watershed[J]. Bulletin of Soiland Water Conservation, 2015, 35(4): 34-39.
DOI：

LOU Junpeng, ZHANG Zhiqiang, GUO Junting, et al. Impact of Landscape Pattern Change on Runoff in Chaohe River Watershed[J]. Bulletin of Soiland Water Conservation, 2015, 35(4): 34-39. DOI： 10.13961/j.cnki.stbctb.2015.04.008.

摘要

[目的] 分析潮河流域的景观空间格局变化及其与径流的关系

为流域生态环境建设提供理论依据。[方法] 根据潮河流域50 a多的水文气象资料

利用1979

1987

1991和2009年4期遥感影像

采用ArcGIS及Fragstats等景观分析软件计算。[结果] 潮河流域的降雨量呈减少趋势

而温度以0.215℃/10 a的速度升高

潮河的径流量明显减少

并呈现以28 a为周期的丰枯转换;潮河流域斑块个数增加

斑块分布趋于均匀

斑块面积变小并逐渐趋于稳定

斑块形状趋向于简单

复杂化程度降低

流域内景观异质性变弱。[结论] 径流量随着景观形状指数的增大而减小

在平均斑块周长为1 050 m

流域斑块数量为110 000以及Shannon's多样性指数为1.33左右时

斑块的综合截留能力最强

流域产流能力最弱。

Abstract

[Objective] The changes of landscape pattern and relations among landscape index and runoff in Chaohe River watershed were examined in order to provide theoretical basis for the basin ecological environment construction. [Methods] The hydrometeorological data of Chaohe watershed over 50 years

ArcGIS and Fragstats software

landscape index from the remote sensing images(1979

1987

1991

2009) of Chaohe River watershed were used. [Results] Precipitation and runoff decreased over time

and the temperature increased at 0.215℃/10 a. The runoff of Chaohe River decreased significantly with the 28-year cycle of wet and dry conversion; a steady increasing patches number with decreasing area with more simplicity caused Chaohe River watershed become weak. [Conclusion] Runoff decreased with increase of landscape shape index. When the mean patches perimeter was 1 050 m

the number of patches was 110 000 with Shannon's diversity index of about 1.33. Therefore

the comprehensive intercepting ability of patches was the strongest and the watershed runoff capacity was the weakest.

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references

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