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当前位置: 首页 > 文章 > 人工杉木林间伐对水土流失影响的研究 北京林业大学学报 2008,30 (3) 120-123
Position: Home > Articles > The effects of fir plantation thinning on soil and water loss. Journal of Beijing Forestry University 2008,30 (3) 120-123

人工杉木林间伐对水土流失影响的研究

作  者：
李素艳;黄瑜;张建国
关键词：
间伐;降雨特征参数;径流系数;产流量;含沙率
摘  要：
该文以江西省大岗山的人工杉木林为研究对象,分析间伐对水土流失的影响。结果表明:①间伐后,林下植被发展迅速,覆盖度增加,径流系数较未间伐的林地小,未间伐林地的径流系数是间伐林地的4.67倍;②随着时间的发展,同一样地的降雨产流量与1次降雨量3、0 min降雨强度、60 min降雨强度的相关关系降低,间伐样地的上述相关关系比未间伐样地的更弱;③间伐样地的径流含沙率明显低于未间伐样地。④适度间伐虽然降低了林分的郁闭度,削弱了林冠的截留率,但是林下植被的迅速发展,使得林分整体的蓄水和保土效益明显增加。
译  名：
The effects of fir plantation thinning on soil and water loss.
作  者：
LI Su-yan~1;HUANG Yu~2;ZHANG Jian-guo~3.1 School of Soil and Water Conservation,Beijing Forestry University,100083,P.R.China;2 School of Environment and Natural Resources,Renmin University of China,Beijing,100872,P.R.China;3 Research Institute of Forestry,Chinese Academy of Forestry,Beijing,100091,P.R.China.
关键词：
thinning;rainfall characteristic parameter;runoff coefficient;runoff yield;sediment rate
摘  要：
The effects of fir plantation thinning on soil and water loss in Mt.Dagangshan are studied.The results show that: 1) The coverage of undergrowth is increased rapidly after thinning and the runoff coefficient of the un-thinning plots is 4.67 times as much as that of the thinning plots;②The correlativities of rainfall runoff yield and rainfall amount,precipitation intensity of 30 minutes and 60 minutes in the same plot have a decreasing trend as times go on;the correlativity of thinning plots is weaker than that of the un-thinning plots;③The sediment rate of thinning plots is apparently lower than that of the un-thinning plots.Although proper thinning diminishs the canopy density and weakens the canopy interception rate,the under-canopy vegetation is developed quickly and the overall water and soil conservation benefits of the forest stands are increased.

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