网格式生物埂对坡面土壤贮水及渗透性的影响  

Effects of Net form Banks on Slope Surface Soil Infiltration Characteristics

作　　者：李建兴[1] 何丙辉[1] 姚云[1] 秦川[1] 黄欢[1] 吴玫[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：《灌溉排水学报》2012年第6期38-41,共4页Journal of Irrigation and Drainage

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课题(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：为研究网格式生物埂护坡的时间效应,以无生物埂护坡的裸坡为对照,对建设时间为1～4年的黄花生物埂坡面土壤的入渗与贮水特征进行了研究。结果表明,①建设年限1～4年的黄花生物埂与裸坡的饱和贮水量、最大滞留贮水量、最大吸持贮水量、初始入渗率、稳渗率、平均渗透率和渗透总量均表现为:4年>3年>2年>1年>裸坡,且均与建设时间呈显著的线性关系;②坡位对土壤贮水及渗透性的影响明显,1～4年的黄花生物埂均表现为坡上>坡中>坡下的规律,而裸坡表现出与之相反的规律;③土壤渗透性与土壤理化性质(总孔隙度、非毛管孔隙、毛管孔隙、土壤密度及有机质)和植被因子(根长密度、地下生物量和地上生物量)显著或极显著相关。To study the time effect of net form banks on slope protection, soil water holding capacities and infiltration characteristics of Hemerocallis fulva banks were studied in one-year to four-year development period, and non-banks bare slop was used as a control . The results indicated that： @Soil saturated water storage, water-holding capacity of non-capillary porosity, water-holding of capacity porosity, initial infiltration rate, average infiltration rate, stable infiltration rate and accumulate infiltration were all shown as the sequence of 4a〉3a〉2a〉1a〉bare slop, which had a linear function with development time. （2）The influence of slope position on the infiltration rate had obvious regularity with upslope〉middle slope〉down slope in one-year to four-year development period; however,, there existed a contrary tendency for bare slop. （3）@The closely relative factors to soil water infiltration properties were picked out, which included total porosity, non-capillary porosity, capillary porosity, soil hulk density, the organic matter content, root length density, underground biomass and above-ground biomass.

关 键 词：丘陵山区 网格式生物埂 土壤贮水量 土壤入渗 ’ 

分 类 号：S152.7[农业科学—土壤学]