| 岷江干旱河谷区不同土地利用方式下土壤抗冲性试验 |
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| 引用本文： | 伏耀龙,张兴昌.岷江干旱河谷区不同土地利用方式下土壤抗冲性试验[J].农业机械学报,2012,43(7):50-55. |
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| 作者姓名： | 伏耀龙 张兴昌 |
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| 作者单位： | 1. 西北农林科技大学资源环境学院,陕西杨凌,712100
2. 中国科学院水利部水土保持研究所黄土高原土壤侵蚀与旱地农业国家重点实验室,陕西杨凌,712100 |
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| 基金项目： | 国家重点基础研究发展计划（973计划）资助项目（2007CB106803）;中国科学院知识创新工程资助项目 (KZCX2—YW—441) |
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| 摘 要： | 采用野外实地放水冲刷的试验方法,对岷江上游干旱河谷区龙坝沟流域不同土地利用方式(灌木林地、荒草地、耕地和裸地)下土壤抗冲性进行测试研究,分析了土壤侵蚀产沙相关因素。结果表明:不同土地利用方式下土壤抗冲系数均随冲刷时间延长呈波状上升变化趋势;土壤的抗冲性从大到小依次为:荒草地、小麦耕地、灌木林地、玉米耕地、裸地;土壤抗冲系数与粉粒体积分数呈显著负相关(相关系数为-0.992,P<0.01),与砂粒体积分数呈显著正相关(相关系数为0.925,P<0.01)。
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| 关 键 词： | 土壤抗冲性 坡面侵蚀 岷江上游干旱河谷区 冲刷试验 |
Anti-scourability of Soil under Different Land Use Types in Dry Valley of Minjiang River |
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| Fu Yaolong and Zhang Xingchang.Anti-scourability of Soil under Different Land Use Types in Dry Valley of Minjiang River[J].Transactions of the Chinese Society of Agricultural Machinery,2012,43(7):50-55. |
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| Authors: | Fu Yaolong and Zhang Xingchang |
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| Institution: | Northwest A&F University;Institute of Water and Soil Conservation, Chinese Academy of Sciences and Ministry of Water Resources |
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| Abstract: | In order to provide scientific and theoretical basis for control of water and soil loss of slope, soil anti-scourability for different land uses (shrub land, waste grassland, cultivated land and bare land) in Longbagou basin, the dry valley of upper Minjiang River was studied by the flume experiment, and soil erosion and sediment yield characteristic and its influencing factors were discussed. The results showed that the anti-scourability of surface soil under different land use patterns increased and assumed wavy variation along with scouring time; the anti-scourability followed the order of waste grassland, wheat land, shrub land, corn land, bare land; soil anti-scourability values and silt content has a significant negative correlation (r=-0.992, P<0.01), and sand content has a significant positive correlation (r=0.925, P<0.01). |
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| Keywords: | Soil anti-scourability Slope erosion Dry valley of Minjiang River Scouring experiment |
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