喀斯特石漠化区顶坛花椒林地土壤水分物理性质变化  

The change of soil water physical properties of Zanthoxyhum bungeanum var. dintanensis in Karst Rocky Desertification Area

作　　者：宋林松[1] 汪京[1] 王棋[1] 杨瑞[1] 张玉武 

机构地区：[1]贵州大学林学院,贵州贵阳550025 [2]贵州省生物研究所,贵州贵阳550009

出　　处：《贵州科学》2016年第2期19-25,共7页Guizhou Science

基　　金：贵州省科技计划项目(黔科合JZ字[2014]200211;黔科合SY字[2013]3165号;黔科合NY字[2009]3052);贵州大学引进人才项目(贵大人基合字(2012)003号);国家环保部生物多样性保护专项资金项目(kksbdyj01)

摘　　要：生态经济型植物的种植是喀斯特石漠化区植被恢复的有效措施,顶坛花椒是贵州花江喀斯特石漠化综合治理区种植最为广泛的植物。本文以顶坛花椒作为研究对象,分析不同径阶顶坛花椒对土壤水分物理性质的影响,研究结果表明:1)在不同深度土壤密度的变化中,2、8径阶土壤密度变化差异不显著,4、6、10径阶土壤密度变化差异显著;在不同径阶土壤密度变化比较中,2、4、6、8径阶土壤密度变化差异不显著,而10径阶的土壤密度与其它各径阶存着显著差异变化。2)从土壤孔隙度来看,8径阶土壤总孔隙度、毛管孔隙度、非毛管孔隙度值都最大,10径阶值都普遍偏小,土壤总孔隙度的具体顺序为:8径阶>2径阶>6径阶>4径阶>10径阶。3)从土壤含水率、从田间含水量、最大持水率、毛管持水率等蓄水特性来看,各径阶顶坛花椒持水能力顺序均为:8径阶>2径阶>6径阶>4径阶>10径阶,其变化规律与土壤孔隙度变化一致。Planting species of eco-economic type is an effective measurement to vegetation restoration in Karst rocky desertification area,and Zanthoxyhum bungeanum var. dintanensis is the most widely cultivated plant in the region. In this study,we select anthoxyhum bungeanum var. dintanensis to analyze the soil water physical properties of different diameters class. The results show that the change of soil density in different depth,there are no significant difference between the 2 diameter class and the 8 diameter class,and there are significant differences among the 4,6,10 diameter class. In the change of soil density in different diameters classes,there are no significant difference among the 2,4,6,8 diameter classes,and there was a significant difference between the 10 diameter class and others. Compared to other diameters classes,the total soil porosity,capillary porosity and non-capillary porosity of the 8 diameter class are at the maximum value. The 10 diameter class is the minimum,and the order of diameter classes is 8 2 6 4 10. For the water storage characteristics of natural moisture,field moisture,maximum water holding rate and capillary moisture capacity,the order of diameter classes is also 826410,and the order of the water storage characteristics is the same with the soil porosity.

关 键 词：喀斯特 石漠化区 径阶 顶坛花椒 土壤水分物理性质 

分 类 号：S714.2[农业科学—林学]