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 。
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.
出处
《河北大学学报（自然科学版）》
CAS
2001年第3期310-315,共6页
Journal of Hebei University(Natural Science Edition)
基金
河北省教育厅博士基金资助项目 (96 0 40 2J)
关键词
土壤肥力
华北落叶松群落
物种多样性
干扰
soil fertility
Larix principis-rupprechtii community
species diversity
disturbance
