Species Selection and Ecological Benefits of Revegetation on Different Types of Land in the Headstream Area of Pearl River
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    Abstract:

    In order to conduct species comparison and eco-benefit analysis in revegetation, some fixed plots with different treatments of revegetation were set up on different types of land in the headstream area of Pearl River. The result of four-year study showed as follows (1) Among the six species studied, the tree height growth of Pinus yunnanensis was the lowest, and that of the Alnus neplanensis was the fastest. The tree height growths of Sabina chinensis, Cupressus torulosa, Cryptomeria japonica, Alnus ferdinandi-coburgii were 2.8, 2.5, 2.3 and 1.7 times of that of Pinus yunnanensis, respectively. The tested species, in terms of DBH, ranked in the descent order of Alnus neplanensis, Sabina chinensis, Cupressus torulosa, Cryptomeria japonica, Alnus ferdinandi-coburgii and Pinus yunnanensis. (2) Land types ranked in the descent Shannon Wiener index were in turn rehabilitated land at shady slope, grass land and bare land, and degraded forest land; land types ranked in the descent evenness index were in turn rehabilitated land at shady slope, arable land at sunny slope, grass land and bare land, and degraded forest land. (3) Soil bulk densities of all the land types decreased, and capillary porosities obviously increased compared with those in 2001, which implied that soil physical structure was significantly increased, and the condition of soil compaction was improved greatly. (4) The average soil erosion modulus for the experimental region decreased to 1 087 t/(km2·a), and it decreased by 38.48 %. The area of soil and water loss decreased from 188.27 hm2 to 104.83 hm2, decreasing by 44.32 %.

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李贵祥,孟广涛,方向京,柴勇,和丽萍,张正海.珠江源头区不同地类人工恢复植被树种选择及生态效益研究[J].水土保持通报英文版,2007,(4):126-130

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History
  • Received:February 18,2007
  • Revised:June 20,2007
  • Adopted:
  • Online: November 26,2014
  • Published: