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对广东省蕉岭长潭自然保护区的阔叶混交林、马尾松林、杉木林、毛竹林、针阔混交林等五种典型林分的土壤水分物理性质进行了研究,结果表明:(1)五种林分类型土壤自然含水量、毛管持水量、最小持水量的排序为毛竹林>针阔混交林>马尾松林>杉木林>阔叶混交林;非毛管孔隙度和非毛管持水量的排序为针阔混交林>阔叶混交林>杉木林>马尾松林>毛竹林。(2)五种林分的非毛管孔隙度;阔叶混交林、杉木林、针阔混交林的总孔隙度;阔叶混交林的毛管持水量、最大持水量、最小持水量、非毛管持水量;针阔混交林的自然含水量、毛管持水量、最大持水量、最小持水量、非毛管持水量都是随着土层深度的增加而减少。阔叶混交林、毛竹林、杉木林、针阔混交林的土壤容重是随土层深度的增加而增加。(3)同一土层不同林分间的容重、孔隙度、自然含水量、最大持水量、毛管持水量、非毛管持水量和最小持水量都没有显著差异,而同一林分的物理性质和持水特性在不同土层之间存在显著差异。
The physical properties of soil moisture in five typical stands of broad-leaved mixed forest, Masson pine forest, Chinese fir forest, Moso bamboo forest and coniferous-broad-leaved mixed forest in Jiaoling Changtan Nature Reserve of Guangdong Province were studied. The results showed that: (1) The order of soil natural water content, capillary water holding capacity and minimum water holding capacity for five forest types was as follows: Phyllostachys pubescens forest> mixed coniferous and broad leaf forest> Pinus massoniana forest> Cunninghamia lanceolata> broadleaved mixed forest; order of non-capillary porosity and non-capillary water holding capacity Mixed coniferous and broad-leaved forest> broad-leaved mixed forest> Chinese fir forest> Masson pine> bamboo forest. (2) non-capillary porosity of five stands; total porosity of broad-leaved mixed forest, Chinese fir plantation and coniferous-broad-leaved mixed forest; capillary water holding capacity, maximum water holding capacity, minimum water holding capacity, The water content, coniferous and broad-leaved mixed forest’s natural water content, capillary water holding capacity, maximum water holding capacity, minimum water holding capacity and non-capillary water holding capacity all decreased with the increase of soil depth. The soil bulk density of broad-leaved mixed forest, Moso bamboo forest, Chinese fir forest and coniferous-broad-leaved mixed forest increased with the increase of soil depth. (3) There was no significant difference in bulk density, porosity, natural water content, maximum water holding capacity, capillary water holding capacity, non-capillary water holding capacity and minimum water holding capacity among different stands in the same soil layer. However, There are significant differences in water characteristics between different soil layers.