| 粤北石漠化地区坡地土壤侵蚀模拟试验研究 |
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| 引用本文： | 王明刚,李森.粤北石漠化地区坡地土壤侵蚀模拟试验研究[J].中国沙漠,2011,31(6):1488-1492. |
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| 作者姓名： | 王明刚 李森 |
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| 作者单位： | 1. 广州科技贸易职业学院管理系,广东广州,511442
2. 佛山大学资源与环境科学研究所,广东佛山528000／西北师范大学,甘肃兰州730070 |
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| 基金项目： | 国家自然科学基金项目(30870469)资助 |
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| 摘 要： | 在粤北山区裸地、草坡地和耕地等3种石漠化土地的坡面上，采用0.3 mm·min-1、0.48 mm·min-1、0.72 mm·min-1、1.08 mm·min-1 4种降雨强度进行了36场人工降雨模拟试验。结果表明，坡面上3种类型石漠化土地的土壤侵蚀特征、强度各不相同。在同一地类上，土壤侵蚀量随降雨过程的进行呈现出波动下降的趋势，且随雨强的增大，土壤侵蚀量亦增大；土壤侵蚀量与雨强之间均呈现极显著的线性相关关系。在任一雨强条件下，都是裸地的土壤侵蚀量最大，耕地次之，草坡地最小。地表覆被对降雨侵蚀产沙过程有重要的抑制作用，大雨强条件下抑制作用尤为突出；而水平沟耕作方式能减少小雨强条件下的土壤侵蚀量，但随着雨强的增大，其影响也随之降低。
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| 关 键 词： | 土壤侵蚀 人工降雨 坡地 石漠化 粤北山区 |
| 收稿时间： | 2011-03-10; |
Experimental Study of Soil Erosion on Sloping Rocky Desertification Land in Northern Guangdong Province |
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| WANG Ming-gang,LI Sen.Experimental Study of Soil Erosion on Sloping Rocky Desertification Land in Northern Guangdong Province[J].Journal of Desert Research,2011,31(6):1488-1492. |
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| Authors: | WANG Ming-gang LI Sen |
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| Institution: | WANG Ming-gang1,LI Sen2,3(1.Department of Management,Guangzhou Vocational College of Technology and Business,Guangzhou 511442,China,2.Resources and Environmental Science Research Institute,Foshan University,Foshan 528000,Guangdong,3.Northwest Normal University,Lanzhou 730070,China) |
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| Abstract: | Simulated rain is a valid tool to examine soil erosion on sloping land.36 simulated rainfall experiments with different rainfall intensities and durations are completed on three different types of land in typical rocky desertification land slope in northern Guangdong Province.Results show that soil erosion amount decreased in fluctuation under same land surface condition during rain process;under typical rainfall intensity,the sediment yield from bare land is more than from grassland and cultivated land.Veg... |
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| Keywords: | soil erosion artificial rain experimental study rocky desertification northern Guangdong province |
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