| 陡坡耕地施加PAM侵蚀产沙规律及临界坡长的试验研究 |
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| 引用本文： | 刘纪根,雷廷武,潘英华,夏卫生,张晴雯.陡坡耕地施加PAM侵蚀产沙规律及临界坡长的试验研究[J].土壤学报,2003,40(4):504-510. |
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| 作者姓名： | 刘纪根 雷廷武 潘英华 夏卫生 张晴雯 |
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| 作者单位： | 1. 中国科学院地理科学与资源研究所,北京,100101
2. 中国科学院水利部水土保持研究所,陕西杨凌,712100 |
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| 基金项目： | 中国科学院“引进国外杰出人”基金项目(982602)和国家自然科学基金项目(40171062)资助 |
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| 摘 要： | PAM(聚丙烯酰胺 )作为一种土壤结构改良剂施用于地表 ,能显著的减小径流和土壤侵蚀量。本研究设计了一系列人工降雨模拟试验 ,定量研究了坡度、坡长、PAM覆盖度、雨强对陡坡耕地土壤侵蚀产沙的影响。试验采用三种雨强 :5 0mmh- 1 、10 0mmh- 1 、15 0mmh- 1 ,四种坡度 :5°、10°、2 0°、2 5° (8 74%、17 63 %、3 6 4%、46 63 % ) ,四种当量坡长 :8m、16m、2 4m、40m ,五种地表处理 :对照、麦草覆盖、三种PAM覆盖度A、B、C(A
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| 关 键 词： | PAM 土壤结构改良剂 陡坡耕地 侵蚀产沙 临界坡长 |
| 收稿时间： | 2001/9/15 0:00:00 |
| 修稿时间： | 2001年9月15日 |
EFFECT OF POLYACRYLAMIDE ON SEDIMENT LOSS AND CRITICAL SLOPE LENGTH OF STEEP CUL TIVATED SLOPE LAND |
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| Liu Ji-gen,Lei Ting-wu,Pan Ying-hu,Xia Wei-sheng and Zhang Qing-wen.EFFECT OF POLYACRYLAMIDE ON SEDIMENT LOSS AND CRITICAL SLOPE LENGTH OF STEEP CUL TIVATED SLOPE LAND[J].Acta Pedologica Sinica,2003,40(4):504-510. |
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| Authors: | Liu Ji-gen Lei Ting-wu Pan Ying-hu Xia Wei-sheng and Zhang Qing-wen |
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| Institution: | Institute of Geographic Science and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China;Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling, Shaanxi 712100, China;Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling, Shaanxi 712100, China;Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling, Shaanxi 712100, China;Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling, Shaanxi 712100, China |
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| Abstract: | Polyacrylamide(PAM),as a new effective soil amendment,applied on to soil surface,can significantly reduce runoff and erosion.With a series of rainfall simulation tests,effects of slope degree,slope length,PAM coverage and rain intensity on soil sediment loss of steep cultivated slope land are approached.The experiment is designed to have 3 levels of rain intensity:50 mm h-1,100 mm h-1 and 150 mm h-1;4 slope degree:5°,10°,20°and 25°(8.74%,17.63%,36.4%and 46.63%);4 equivalent slope length:8 m,16 m,24 m and 40 m;and 5 treatments:control,straw coverage,3 PAM coverage-A,B and C(A
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| Keywords: | PAM Soil amendment Steep cultivated slope land S ediment loss Critical slope length |
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