| 川中丘陵极强度侵蚀区治理技术及效应研究 |
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| 引用本文： | 陈家才,王艳.川中丘陵极强度侵蚀区治理技术及效应研究[J].中国水土保持,1997(2):29-30,37. |
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| 作者姓名： | 陈家才 王艳 |
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| 作者单位： | [1]遂宁麻子滩水利工程管理处 [2]遂宁市市中区水保办 |
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| 摘 要： | 川中丘陵区水土流失总面积为7.71万km~2,其中极强度流失面积占流失总面积的32.4%.以具有典型代表性的遂宁市市中区为基点,分别研究了荒山极强度侵蚀区和陡坡耕地极强度侵蚀区的综合防治技术,分析了极强度侵蚀区实施综合治理措施后的水保作用及生态经济效益.结果表明,极强度侵蚀区经综合治理后,年泥沙流失总量由10664.6t/km~2减少到647.3t/km~2,与未治理对照区相比,年径流量减少862%,土壤肥力平均提高61.4%.
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| 关 键 词： | 极强度侵蚀 治理技术 生态效益 经济效益 水土保持 川中丘陵 |
On Technique for Harnessing the Extensively Eroded Areas in Central Sicbuan and Benefits Gained |
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| Abstract: | There is a soil loss area of 77. 1 thousand km2 in the hilly areas in central Sichuan, among which 32. 4% is extensively eroded. Taking Shizhong district, a typical representative of soil loss areas, as an experiment base, research into comprehensive harnessment technique has been conducted to control soil loss in extensively eroded mountainous area and sloping farmlard, and the benefit of the technique in conserving soil and improving ecological conditions is analyzed. It is shown that after comprehensive harnessment the amount of soil loss in extensively eroded areas is reduced from 10664. 6 t/km2 to 647. 3t/km2. Compared with similar areas without harnessment, runoff in the harnessed areas is reduced by 86. 2%, and soil fertility is increased by 61. 4%. |
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| Keywords: | extensively eroded area harnessment technique ecological benefit economic benefit soil conservation hilly areas in central Sichuan |
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