太行山片麻岩区植被恢复过程中物种多样性与土壤水分效益分析

Analysis on Species Diversity of Vegetation in Restoration and Efficiency of Water in With Gneissose of Taihangshan Mountian Region

植被恢复是退化生态系统重建的重要途径,植被恢复过程中物种多样性的变化反映了植被的恢复程度,通过群落调查,研究了太行山片麻岩区植被恢复过程中群落物种多样性特征及其与土壤含水量之间的关系,结果表明:物种多样性指数天然灌木群落>人工乔木群落。乔木和灌木群落各指数大小为封禁20年>封禁10年>封禁5年。6种群落其土壤含水量均偏低,随着封禁时间的加长,含水量略为增加,但天然灌木群落平均含水量稍大于人工群落。不同封禁时间群落土壤含水量与均匀度指数成正相关,多样性指数与含水量先呈正相关,在封禁20年时,呈负相关。采取封禁措施,减少人为干扰、进行合理抚育措施,是太行山片麻岩区植被群落恢复的有效途径。

Vegetation restoration is main path of rebuilding regressive ecosystem, and species diversity of vegetation in restoration reflects level of vegetation restoration. Relation of species diversity characteristic in vegetation restoration in Taihang mountain gneissose area and soil water content were studied through investigating different closed communities. The results showed the index of the species diversity of natural shrub communities〉that of artificial arbor communities. Index value is in 20 years〉in 10 years〉in 5 years of artificial arbor communities and natural shrub communities. Soil water content in six communities is low, but its added litter with closing and that of natural shrub communities is high than that of artificial arbor communities. Soil water content and evenness index is positive correlation, and diversity and Soil water content is positive correlation in earlier stage, but is negative correlation in closing 20 years. Elements of natural communities of shrub were recovery during short closed time from diversities of communities. Closing and stopping human disturbances and reasonable tending method are the effective measure for vegetation recovery in Taihang mountain gneissose region.