无量山自然保护区南段4种森林类型的林地土壤特性研究

对设于云南省无量山自然保护区南段(景东段)常绿落叶阔叶混交林、中山湿性常绿阔叶林、山顶苔藓矮林、温凉性针叶林4种森林类型的10块监测样地的土壤进行了调查研究,结果表明:4种森林类型的林地土壤类型主要是黄棕壤、棕壤;其土壤的物理性状存在差异;10块样地土壤的有机质、有效氮、有效钾含量丰富,而全磷、有效磷的含量及盐基饱和度较低。在4种森林类型中,温凉性针叶林的林地土壤为砂壤,肥力较其它3种森林类型的林地土壤低。其他3种森林类型林地的土壤肥力没有较大的差异。

A Study on Soil Characteristics of Four Forest Types at South Part of Wuliangshan Nature Reserve

The soil characteristics of ever-green and deciduous broadleaved mixed forests,mid-montane moist ever-green broadleaved forest,montane dwarfing mossy forest and cool-temperate coniferous forest located at south part of Wuliangshan nature reserve were studied based on the data from 10 sample plots.The results indicate that the main soil types are yellow-brown soil and brown soil,the physical properties are varied.The contents of organic matter,available N and available K are rich,whereas the contents of whole P and available P are low,and the base cation saturation is low.Among these four forest types,the soil of cool-temperate coniferous forest is sandy soil,the fertility is lower than other three forest types.There is no significant difference among the soil fertility of other three forest types.