【摘要】 研究了华北落叶松群落与土壤肥力间的关系 .结果表明 ,随着林龄的增长 ,灌木层与草本层的多样性指数均先增加后减少 ;同时随着森林的演替 ,土壤表层的速效磷、速效氮、全氮、有机质的含量随林龄的增加而增加 .人为干扰会改变土壤肥力状况 ,进而影响华北落叶松群落的结构与功能更多还原

【Abstract】 The relationship between the soil fertility regimes and Larix principis-rupprechtii communities in Fuping County among Taihang Mountains was studied. The results were as follows: with the development of the forest community, available N, available P, total N and organic matter in the top 20 cm thickness of soil were increased steadily. As the structure of the forest community grew more complex, the species diversities both in the shrub layer and in the herbaceous layer were all reached a peak and then decreased .The field investigation also found that human disturbance could modify the relationship between the soil fertility regimes and the forest communities.Effective measurements should be taken to conserve the forest community.更多还原