摘要
对四川遂宁船山区桂花镇南垭小流域5种不同土地利用方式(以裸地为对照)的土壤入渗与贮水特征进行研究。结果表明:5种土地利用方式和裸地的饱和贮水量表现为甜橙林(228.10mm)>核桃林(198.92mm)>水保林(196.71mm)>缓坡耕地(193.96mm)>梯平地(189.56mm)>裸地(184.24mm);土壤渗透性能依次为甜橙林>核桃林>水保林>梯平地>缓坡耕地>裸地,土壤入渗特征均表现出初渗率>平均入渗>稳渗率的规律;通用经验方程模型对该流域各土地利用类型土壤水分入渗的拟合效果最佳,菲利浦(Philip)公式次之,考斯加柯夫(Kostiakov)和霍顿(Horton)公式不适合描述该流域水分入渗过程;相关分析表明,土壤渗透与土壤容重、初始含水量、毛管孔隙、总孔隙均呈显著或极显著相关关系,并在此基础上建立了主导因子方程;甜橙林是该流域水土流失综合治理选择的最佳模式,应进一步推广。
The characteristics of soil infiltration and water-holding capacity of five kinds of land use types （taking bare land for comparison） were studied in Nanya watershed of Suining Chuanshan district, Sichuan province. The results indicated that： Soil saturated water storage was shown as the sequence of orange forest （228.10 mm） 〉walnut forest（198. 92 mm） 〉conservation forest（196. 71 mm） 〉slope cropland（193. 96 mm） 〉leveled cropland（189.56 mm ） 〉bare land（184.24 ram）. Soil infiltration values of five land use types and bare land were shown as the sequence of orange forest 〉walnut forest 〉conservation forest 〉leveled cropland 〉slope cropland 〉bare land. Soil infiltration characteristics were shown as initial infiltration rate 〉average infiltration rate 〉stable infiltration rate. Test also indicated that General empirical model was the best one to describe the soil infiltration processes of this area, Philip model was the second, but the Kostiakov model and Horton model could not describe the soil infiltration processes of this area good. Correlation analysis showed that： There had significant or extremely significant correlation between soil infiltration and soil bulk density, initial moisture content, capillary porosity, total porosity, and the dominant-factor equations were established. Orange forest was the best mode of the comprehensive management in small watershed and the mode should be further promoted.
出处
《水土保持学报》
CSCD
北大核心
2014年第1期53-57,62,共6页
Journal of Soil and Water Conservation
基金
国家科技支撑计划项目(2011BAD31B03)
国家自然科学基金项目(41271291)
农业部公益性行业科研项目(201003014-6-3)
