中文摘要：

对滇西北高原湿地碧塔海流域不同植被类型下贮水量及土壤入渗过程进行了测定,分析土壤贮水能力、入渗特征及其影响因素。结果表明：（1）针叶林、阔叶林地能有效降低土壤容重,增加土壤孔隙度及有机质含量,对自然含水率也存在较大影响。（2）旱地及草甸对促进贮水量的能力较小,远不及针叶林、阔叶林和灌丛。相关性分析表明,有机质含量对土壤饱和贮水量、吸持贮水量、滞留贮水量存在显著影响,而自然含水率、容重只与饱和贮水量、吸持贮水量有显著关系。（3）不同覆被类型土壤入渗性能之间存在较大差异,针叶林地表现出最好的入渗性能,阔叶林地次之,旱地最弱。相关性分析表明,有机质、容重、〉5mm水稳性大团聚体是影响碧塔海流域水分入渗的重要因子。（4）Green—Ampt入渗模型能较好地模拟碧塔海流域不同覆被类型下土壤的入渗过程,在该区的实用性较强。

英文摘要：

In this study,we measured soil water storage and infiltration processes under different vegetation types in the plateau wetland of Bita Lake Basin in the northwest of Yunnan province,and analyzed soil water storage capacity,soil infiltration characteristics and their influencing factors.The results showed that：（1）Coniferous forest and broad-leaved forest could effectively reduce soil bulk density,increase soil porosity and the content of organic matter,and also greatly affect soil natural water content.（2）The promotions of upland and meadow on soil water storage capacity were far less than those of coniferous forest,broad-leaved forest and shrub.The results of correlation analysis showed that soil organic matter content significantly affect soil saturated water storage capacity,water-holding capacity,and water retention capacity,while the natural water content and bulk density of soil were only correlated with soil saturated water storage capacity and water-holding capacity.（3）Soil infiltration properties significantly differed under different vegetation types,which listed in the following order：coniferous forest〉broad-leaved forest〉upland.The correlation analysis showed that soil organic matter,bulk density,and〉5mm water stable aggregates were important influencing factors of soil infiltration in the plateau wetland of Bita Lake Basin.（4）Green-Ampt infiltration model could well simulate soil infiltration process under different vegetation types of the Bita Lake Basin.