开发建设项目中植被自然恢复的水土保持作用
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Roles of Self-recovering Vegetation in Soil and Water Conservation in Development and Construction Projects
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    摘要:

    通过分析最新的水土保持监测所获得的实地植被调查样方资料,论述了植被自然恢复在开发建设项目中的水土保持作用,并结合监测实践,探讨了植被自然恢对水土保持评价指标的影响。(1)在山西省雨量较为充沛的地区,如果重视保留表土并用之覆盖地表,就能使地面植被得到较大程度的自然恢复,其恢复面积占可绿化面积的比例约达25%。(2)在雨量较多地区的扰动地面,依靠植被自然恢复功能,可使植被盖度在1~2 a内达到50%以上,形成初级植被。(3)由于对乔灌木等深根性植物的破坏较为严重,因此,在1~2 a时间内,扰动地面上自然恢复所形成的植被-般为草本群落,并不能完全恢复当地的灌草植被、疏林灌草植被。

    Abstract:

    According to the data from the investigation of vegetation with soil and water conservation supervise measures, this paper discusses the roles of self-recovering vegetation in development and construction projects and probes into the effects of self-recovering vegetation on the evaluation indexes of soil and water conservation.The results obtained indicate that if surface soil is well preserved, surface vegetation self-recovering accounting for nearly one-fourths afforestation area can be gained in the abundant rainfall area.De- pending on self-recovering vegetation on disturbed ground in the abu ndant rainfall area, primary vegetation coverage degree can reach more than 50% within 2 years.Owing to serious vegetation damage, shrubbery vegetation can not be completely recovered wit hin 2 years and self-recovering vegetation on disturbed ground is generally the herbage communities.

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常彦平,聂兴山.开发建设项目中植被自然恢复的水土保持作用[J].水土保持通报,2007,(6):139-141

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  • 收稿日期:2007-05-18
  • 最后修改日期:2007-06-21
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  • 在线发布日期: 2014-12-16
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