| 长江上游区的坡面土壤流失及侵蚀防治 |
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| 引用本文： | 杨艳生.长江上游区的坡面土壤流失及侵蚀防治[J].长江流域资源与环境,1993,2(1):21-26. |
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| 作者姓名： | 杨艳生 |
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| 作者单位： | 中国科学院南京土壤研究所 南京，210008 |
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| 摘 要： | 长江上游区的嘉陵江流域、金沙江渡口至屏山河段流域、三峡库区及库周区,土壤坡面流失量都超过3000t/a·km~2,属长江上游流失严重之最,应列为首批治理重点区;三峡区长江主航道及近主航道支流两岸的重力侵蚀十分严重,给长江输入大量难以排除的砂石物质,应重点加强此区域的重力侵蚀防治。最后对此区的水土保持提出了6条意见。
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| 关 键 词： | 水土流失 土壤侵蚀 防治 长江上游 |
SOIL EROSION ON SLOPE LAND AND EROSION CONTROL IN THE UPPER REACHES REGION OF THE YANGTZE RIVER |
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| Yang Yansheng.SOIL EROSION ON SLOPE LAND AND EROSION CONTROL IN THE UPPER REACHES REGION OF THE YANGTZE RIVER[J].Resources and Environment in the Yangtza Basin,1993,2(1):21-26. |
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| Authors: | Yang Yansheng |
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| Abstract: | The soil loss in the area covering Jia-Ling-Jiang river valley,the Dukou-Pingshandistrict of the Jin-Sha-Jiang watershed and the region around the prospective Three-Gorge Reservoir,is over 3000t/km~2,which represents the biggest loss in the area ofYangtze River's upper reaches.The area must be put the first place for prevention andcontrol of water and soil loss.Gravitational erosion on the banks of the Yangtze Riv-er and its tributaries in the region of Three-Gorge is very serious and delivers imme-nse amount of sand and stone into the Yangtze River.The prevention and control of thegravitational erosion should also be emphasized.Finaly,six proposals are put forwardfor water and soil conservation. |
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| Keywords: | soil loss on slope land prevention and control of soil erosion gravitational erosion |
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