生物埂护坡下不同土地利用方式对土壤渗透性的影响  

Effects of Different Land Use Patterns on Soil Infiltration Characteristic Under Slop Protection with Biological Border

作　　者：李建兴[1] 何丙辉[1] 徐小军[1] 

机构地区：[1]西南大学资源环境学院/三峡库区生态环境教育部重点实验室,重庆400715

出　　处：《水土保持学报》2012年第6期243-248,253,共7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(40971166);国家林业局公益性行业科研专项(201104043);重庆市重大科技专项(CSTC2009AB1115);西南大学生态学重点学科"211工程"三期建设项目

摘　　要：为探讨不同土地利用方式及生物埂对土壤渗透性的影响,以无生物埂+坡耕地为对照,对四川丘陵山区生物埂护坡下6种不同土地利用类型(经济林、水保林、耕地)的土壤渗透性及其影响因素进行研究。结果表明:生物埂护坡下的6种土地利用类型均好于无生物埂的坡耕地,渗透性大小依次为生物埂+枇杷×牧草>生物埂+黄柏林>生物埂+柏木林>生物埂+枇杷林>生物埂+柑桔林>生物埂+坡耕地>无生物埂+坡耕地;通用模型对各土地利用类型的渗透过程拟合效果最好,Horton模型和Kostiakov模型次之,Philip模型最差;相关分析表明,土壤有机质、砂粒含量、>0.25mm水稳性团聚体的含量及非毛管孔隙与土壤入渗性能各指标均呈显著相关关系,并在此基础上建立了主导因子方程。The goal of this study was to determine the effects of different land use patterns and slop protection with biological border on soil infiltration capability in Sichuan billy, non-biological border＋ slope land as a control was used, and determined the relationship between soil infiltration capability and its influencing factors under six land use patterns（economic forest, forest for conserving water supply, cultivated land）. The results showed that no biological border＋slope cultivated land whose soil infiltration capability was lower than those of the other six types. The order of soil infiltration capability from high to low was： Biological border ＋ Eriobotrya japonica pasture forest 〉 biological border ＋ Cortex phellodendri Chinensis forest） biological border ＋ Cupressus funebris forest〉biological border＋ Eriobotrya japonica forest〉biological border＋Citrus retlculata Banco forest〉 biological border＋ slope cultivated land）non-biological border ＋ slope cultivated land; common empirical infiltration model could give the best performance on the infiltrating processes in the seven land use patterns, Kostiakov model and Horton followed by equation, and the Philip equation was the most unsuitable model〉 correlation analysis showed that, soil organic matter, sand grain content, 〉0.25 mm content of soil waterstable aggregates and non-capillary porosity were all found to have a significantly positive relationship with all of infiltration, based on which dominant-factor equations were established.

关 键 词：生物埂护坡 丘陵山区 土地利用方式 土壤渗透性 

分 类 号：S157.2[农业科学—土壤学] S152.72[农业科学—农业基础科学]