水土保持学报2011，Vol.25Issue(6)：170-175,6.
元谋干热河谷冲沟集水区土壤入渗性能及其影响因素
Soil Infiltration and Its Influencing Factors in Gully Drainage Areas in Yuanmou Dry-hot Valley Region
摘要
Abstract
Soil infiltration characteristic and its influencing factors were studied under five land-cover types in gully drainage areas in Yuanmou dry-hot valley region in this paper. Results indicated that:( 1) Differences on soil infiltration capacity among the five land-cover types were significant, especially for the bare land A and bare land B, whose infiltration capacities were much more lower than those of the other three types, which probably is one of the reasons that the corresponding gully heads were still active. (2)The fitting effect of u-niversal empirical equation was the best among the three equations used in the paper. And the fitting result also showed that the ranking sequences of the initial infiltration rate and the stable infiltration rate were the same as woodland>cultivated land>grassland>bare land A>bare land B. (3)Correlation analysis showed that, the ratio between sand and clay, the total porosity, the capillary porosity and the bulk density were all found to have a significantly positive relationship with all of the three infiltration indexes. However, there existed no significant correlation for the norrcapillary porosity, the content of organic matter and the initial soil water content with the three infiltration indexes. The principal component analysis also indicated that the soil bulk density, the capillary porosity and the ratio between sand and clay were the three major factors which greatly influenced soil infiltration characteristics in the study region.关键词
土壤入渗/影响因素/土地覆被类型/冲沟集水区/元谋干热河谷Key words
soil infiltration/ influencing factors/ land-cover types/ gully drainage areas/ Yuanmou dry-hot valley分类
农业科技引用本文复制引用
熊东红,翟娟,杨丹,苏正安,董一帆,陈安强,刘刚才..元谋干热河谷冲沟集水区土壤入渗性能及其影响因素[J].水土保持学报,2011,25(6):170-175,6.基金项目
国家自然科学基金(40901009) （40901009）
中国科学院知识创新工程重要方向项目(KZCXZ-EW-QN317) （KZCXZ-EW-QN317）
中国科学院水利部成都山地灾害与环境研究所"青年百人团队"项目 （）
中国科学院"西部之光"人才培养计划"西部博士"资助项目 （）
