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一般为草本群落,并不能完全恢复当地的灌草植被、疏林灌草植被。
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 soll 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. Depending on self-recovering vegetation on disturbed ground in the abundant 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 within 2 years and self-recovering vegetation on disturbed ground is generally the herbage communities.
出处
《水土保持通报》
CSCD
北大核心
2007年第6期138-141,共4页
Bulletin of Soil and Water Conservation
关键词
植被自然恢复
植物群落
建群种
盖度
self-recovering vegetation
vegetation community
founding group seed
coverage degree
