不同复层次群落下土壤理化性质分析

摘要

[目的]研究复层次群落下的油松-早熟禾、云杉-早熟禾以及落叶松-白三叶3种乔草群落的土壤理化性质,为复层次群落的乔草配置提供理论依据.[方法]对土壤含水量、pH、有机质含量进行测定.[结果]落叶松乔草群落下的土壤含水量高于其他2种乔草群落;土壤pH的排序为落叶松群落>云杉群落>油松群落;土壤有机质含量排序与土壤pH排序相同.[结论]土壤有机质含量越高,土壤pH越高,呈正相关性.这与底层地被植物的种类有着直接关系.豆科白三叶能够提高土壤pH和土壤有机质含量.%[Objective] The research aimed to study the soil physical and properties of multiple level community under Chinese pinebluegrass,spruce-bluegrass and larch-white clover communities,and provide the basic theory for multiple levelcommunities of tree-grass ploying.[Method] The soil water content,pH and soil organic conterts were determined.[Result]The soil water content of larch tree-grass communities was higher than the other.pH sequence was larch communities＞spruce communities＞Chinese pine communities.The sequence of soil organic content was as the same as soil pH. [Conclusion]The higher soil organic content,the higher was pH and soil organic content.