Community Species Composition Changes in Ecological Restorated Area of Serious Eroded Red Soil
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    Abstract:

    Taking Pinus massoniana forest with intense disturbance as control, species composition and important value(IV) of the ecological restoration community in serious eroded red soil, 27 years after in different types of human induced vegetation were analyzed, such as Pinus massoniana forests without disturbance, Pinus massoniana forests with Bamboo-burl-groove, Pinus massoniana forests with planting grass and Bamboo-burl-groove, check dam and non-check dam Pinus massoniana forest, Pinus elliotti forest with bamboo-burl-groove. The results showed that:(1) Species composition of tree layer was simple in all five kinds of slope forests dominated by Pinus massoniana and Pinus elliotti. Community varieties richly but IV distribution is not consistent in the shrub layer, especially ecological restoration effect is most obvious in Pinus elliotti forest with bamboo-burl-groove. The dominance of Gardenia jasminoides Ellis with semi-shade tolerance and evergreen leaf is maximum, followed by photophilous and deciduous chamaecereus sylvestri, and Pinus elliotti seedlings dominance is minimum, with IV of 0.12, 0.11, 0.02, respectively. The herb layer species composition is simple, Pinus massoniana forest without disturbance is the most obvious in restoration, the total herb coverage reaches 40%.(2) In the channel, community species at tree and shrub layers in check dam are more significant than that non-check dam, especially for evergreen and shade species, and each IV is different. The total coverage in herb layer has great disparity which is affected by the tree layer and shrub layer, with 90% in non-check dam and only 10% in check dam. It indicates that different ecological restoration strategies would facilitate plant species composition and accelerate plant community succession in serious eroded red soil through protecting and improving the soil water and nutrient conditions.

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欧阳慧,黄荣珍,李凤,朱丽琴,肖龙,郭虎波,蔡乾坤.严重侵蚀红壤区生态修复后植物群落组成变化[J].水土保持通报英文版,2014,(4):53-58

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History
  • Received:August 24,2013
  • Revised:September 25,2013
  • Adopted:
  • Online: April 05,2016
  • Published: