| 沙棘造林对吴起县土壤水蚀的影响 |
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| 引用本文： | 郭建英,何京丽,李锦荣,殷丽强,刘铁军,荣浩.沙棘造林对吴起县土壤水蚀的影响[J].国际沙棘研究与开发,2013(2):18-24. |
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| 作者姓名： | 郭建英 何京丽 李锦荣 殷丽强 刘铁军 荣浩 |
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| 作者单位： | [1]水利部牧区水利科学研究所,内蒙古呼和浩特010020 [2]水利部水土保持植物开发管理中心,北京100083 |
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| 基金项目： | 中国水科院科研专项项目（MKS2013-001）;水利部公益性行业科研专项经费（201001039）;国家自然科学基金（40901136）. |
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| 摘 要： | 为定量评价沙棘造林后的水土保持效益,文章以沙棘造林的典型县域为研究对象,基于3S技术与RUSLE土壤侵蚀模型,分析评价了该县沙棘造林前后土壤侵蚀的时空变化。结果表明:吴起县实施沙棘造林后10年来,水土流失明显减少,较高强度土壤侵蚀的土地面积大幅度减少。①沙棘造林后土壤侵蚀分布以中度侵蚀最多,其面积占吴起县国土总面积的43.62%,而沙棘造林前土壤侵蚀以极强烈侵蚀为主,占吴起县国土总面积的42.76%。②沙棘造林后全县平均土壤侵蚀模数为5285t/km2.a,属于强度侵蚀,其沙棘造林前平均土壤侵蚀模数为9779t/km2.a,属于极强烈侵蚀,为沙棘造林后的1.85倍,沙棘造林后全县每年可减少土壤侵蚀量1402万t。
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| 关 键 词： | 沙棘造林 水力侵蚀 定量评价 |
The Effect of Soil Water Erosion About Conversion of Cropland to Forest on Wuqi County |
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| Authors: | Guo Jianying He Jingli Li Jinrong Yin Liqiang Liu Tiejun Rong Hao |
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| Institution: | 1. Institute of Water Resources for Pastoral Area of the Ministry of Water Resources of China, Hohhot, 010010, Neimenggu; 2. Soil and Water Conservation Center, the Ministry of Water Resources, Beijing 100038) |
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| Abstract: | Conversion of cropland to forest for the quantitative evaluation of soil and water conservation benefits to the country retreat with typical county also forest engineering construction as the research ob- ject, based on 3S technology RUSLE soil erosion model. The results show that： Wuqi County Return- ing Farmland to Forest for 10 years, the effect of soil erosion control, a higher intensity of soil ero- sion land area in the substantial reduction. （1） returning farmland to forest soil erosion distribution up to moderate erosion, the area accounted for 43.62% of the total land area of Wuqi County, returning farmland before the soil erosion mainly to pole strength erosion accounted Wuqi County total land area of 42.76% the county average soil erosion in （2） returning farmland to 5285 t /km2-a belong to the in- tensity of erosion, the average soil erosion on its returning farmland to 9779 t /km2.a 1.85 times after returning farmland to forest 14.02 million tons |
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| Keywords: | seabuckthom afforestation soil erosion quantitative evaluation |
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