作　　者： ; ; ; ; ; ;

机构地区： 华南农业大学林学院

出　　处： 《生态学杂志》 2009年第4期620-625,共6页

摘　　要： 研究了华南地区8种林地的土壤物理性质,根据其土壤特点分为4类。第1类为马占相思林地、黎蒴-加勒比松林地、火力楠-木荷林地、木荷林地和湿地松林地,特点是上层的土壤容重小于中层和下层,毛管孔隙度中等或较小,非毛管孔隙度中等或较大,非毛管孔隙度和总孔隙度为上层大于中层和下层,自然含水量中等或较大,随着土壤深度的增加而下降或稳定。除了马占相思林地上层外,毛管持水量为中等或较小;第2类为柚木林地,土壤容重较大,且3层土壤的容重相近,毛管孔隙度和毛管持水量较大,非毛管空隙度和自然含水量较小;第3类为落羽杉林地,各层土壤的自然含水量远远大于其他林地。上层和中层的土壤容重、毛管孔隙度和非毛管空隙度中等,毛管持水量大。下层的土壤容重和非毛管空隙度大、毛管空隙度和毛管持水量小。第4类为尾叶桉林地,上层的土壤容重大于中层和下层,毛管孔隙度和毛管持水量较大,非毛管空隙度和自然含水量较小。 The soil physical properties in eight artificial forest stands in South China were measured, and the stands were clustered into four groups, based on their soil physical characters. The first group included Acacia mangium, Castanopsis fissa - Pinus caribaea, Michelia macclurei - Schima superba, Schima superba, and Pinus elliottii stands. Their soil bulk density was smaller in upper layer than in deeper layers, capillary porosity was medium or relatively small, non-capillary porosity was medium or relatively great, non-capillary porosity and total porosity were greater in upper layer than in deeper layers, moisture content was medium or relatively great and decreased or kept steady with increasing depth, and capillary moisture content was medium or relatively small except for A. mangium stand. The second group was Tectona grandis stand. Its soil bulk density in all layers was great and closed each other, capillary porosity and capillary moisture content were relatively great, and non-capillary porosity and moisture content were small. The third soil group was Taxodium distichum stand. Its soil moisture content in all layers was much greater than that of other stands, soil bulk density, capillary porosity, non-capillary porosity of upper and middle layers were medium, capillary moisture content in these layers was great, soil bulk density and non-capillary porosity in lower layer were great, whereas capillary porosity and capillary moisture content in this layer were small. The fourth group was Eucalypys urophylla stand. Its soil bulk density was greater in upper layer than in deeper layers, capillary porosity and capillary moisture content in all layers were great, whereas non-capillary porosity and moisture content were small.

关 键 词： 人工林 土壤物理性质 聚类分析

领　　域： [农业科学]