| 缙云山常绿阔叶林土壤大孔隙与入渗性能关系初探 |
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| 引用本文： | 陈风琴,石辉. 缙云山常绿阔叶林土壤大孔隙与入渗性能关系初探[J]. 西南师范大学学报(自然科学版), 2005, 30(2): 350-353 |
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| 作者姓名： | 陈风琴 石辉 |
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| 作者单位： | 西南师范大学,资源环境科学学院,重庆,400715;西南师范大学,国土资源研究所,重庆,400715 |
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| 基金项目： | 国家重点基础研究发展规划资助项目(2002CB111504)，国家杰出青年基金资助项目(30125036)，国家自然科学基金资助项目(40471078). |
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| 摘 要： | 研究了缙云山常绿阔叶林下土壤饱和导水率和土壤大孔隙的关系. 结果表明: 饱和导水率具有较大的空间变异性, 变异系数达67%; 其大小不仅取决于总孔隙度, 更主要取决于能导水的大孔隙的数量和大小. 饱和导水率的变化对大孔隙变化具有高度依赖性, 且与半径大于0 1 cm的大孔隙体积有较好的相关性.
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| 关 键 词： | 大孔隙 水分穿透曲线 饱和导水率 入渗性能 |
| 文章编号： | 1000-5471(2005)02-0350-04 |
| 修稿时间： | 2004-04-26 |
A Primary Study on the Relation of Soil Macropore and Water Infiltration in Evergreen Broad-Leaved Forest of Jinyun Mountain |
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| CHEN Feng-Qin,SHI Hui. A Primary Study on the Relation of Soil Macropore and Water Infiltration in Evergreen Broad-Leaved Forest of Jinyun Mountain[J]. Journal of southwest china normal university(natural science edition), 2005, 30(2): 350-353 |
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| Authors: | CHEN Feng-Qin SHI Hui |
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| Abstract: | The infiltration ability is important to soil hydrology. The soil macropore is common in and has very important impacts on soil infiltration. In this paper, the relationship between the saturated hydraulic conductivity and soil macropore in evergreen broad-leaved forest of Yinyun Mountain was studied. The result shows that the saturated hydraulic conductivity has great spatial variability with the various coefficient 67%, and the soil bulky density has lower variability. The saturated hydraulic conductivity not only be decided by total porosity but also be decided chiefly by the number and volume of macropore that could transmit water. The variety of the saturation highly depends on the variety of macropore, and it has good association with the volume of soil macropore that radius is larger than 0.1 cm. |
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| Keywords: | macropore water-breakthrough-curve saturated hydraulic conductivity infiltration |
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