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山区小流域生态修复研究

作  者:
余新晓;牛健植;徐军亮
单  位:
北京林业大学资源与环境学院;北京林业大学水土保持学院
关键词:
山区小流域;生态修复;封山育林
摘  要:
系统研究分析密云县潮关西沟封育区天然次生林的生态修复效果。研究表明 :经过近 2 0年的封育 ,林分的郁闭度提高了近 0 2 ,林场的林木覆盖率从 7 2 %提高到 93 8% ,生物多样性、林木生物量、植被群落 ,都有所增加。平均林分郁闭度超过 0 4 ,比封育前提高 0 1~ 0 2 ,植被覆盖度超过 90 % ,林木在截留降水、提高林地蓄水、减少地表径流、防治水土流失等方面发挥了重要作用。
译  名:
Research on the Ecological Restoration in Mountain Watershed
作  者:
Yu Xinxiao1 Niu Jianzhi1 Xu Junliang2 (1 College of Soil and Water Conservation; 2 College of Resources and Environment:Beijing Forestry University, 100083:Beijing, China)
关键词:
mountain watershed; ecological restoration; closing the land for reforestation
摘  要:
The paper provided a systematic analysis of ecological restoration effects of natural secondary forest of closure area in Chao Guanxi Gou, Miyun County. The study indicated that through nearly twenty years of hillclosing afforestation, canopy closure has been improved about 0 2; cover rate of forest has raised from 7 2% to 93 8%; biodiversity, tree biomass and vegetation community have increased to a great extent. Compared with the average canopy closure before hillclosing afforestation in this area, it has raised 0 1~0 2 and has been over 0 4. Forest coverage degree is over 90%. Consequently, the forest plays more important roles in intercepting precipitation, improving water storage capacity of soil, decreasing the surface runoff, controlling soil erosion.

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