摘要
以天山中部林区代表14个不同林分条件的径流小区为研究对象,运用灰色关联分析法,对影响产流产沙的因子进行对比分析。结果表明:产流产沙的因子影响程度存在差异性。对于产沙量来说,降雨量>林分密度>冠层活枝高度>枯落物厚度>郁闭度>坡度;对于产流量来说,降雨量>枯落物厚度>郁闭度>林分密度>冠层活枝高度>坡度。而不同林分条件对产流产沙影响差异中,天然林呈现:中龄林3>近熟林>中龄林4>成熟林>幼龄林>中龄林2>中龄林1;人工林为:混交林>透光伐抚育林>修枝抚育林>未抚育林;灌木为:盖度0.6>盖度0.8。
In this study, the grey correlation analysis was used to analyze the factors affecting runoff formation and sediment yield in 14 runoff plots with different standing forest conditions in the central Tianshan Mountains. The research resuhs revealed that there were the differences of the factors affecting runoff formation and sediment yield in these plots. The factors affecting sediment yield were in an order of precipitation 〉 standing forest density 〉 canopy live branch height 〉 thickness of litters 〉 canopy density 〉 slope ; the factors affecting runoff formation were in an order of precipitation 〉 thickness of litters 〉 canopy density 〉 standing forest density 〉 canopy live branch height 〉 slope. The standing forest conditions affecting runoff formation and sediment yield were as follows： the natural forests were in an order of immature forest 3 〉 near-mature forest 〉 immature forest 4 〉 mature forest 〉 young growth 〉 immature forest 2 〉 immature forest 1 ; the plantations were in an order of mingled forest 〉 tending forest pervious to light 〉 pruning tending forest 〉 forest without tending; and the shrubberies were in an order of the shrubberies with 0.6 coverage 〉 the shrubberies with 0.8 coverage.
出处
《干旱区研究》
CSCD
北大核心
2014年第4期696-701,共6页
Arid Zone Research
基金
新疆维吾尔自治区科技计划项目(201331125)
国家"十二五"科技支撑计划(2011BAD38B0505)
自治区财政林业科技专项资金项目(xjlk2013)
自治区公益性科研院所专项资金项目(201415)
关键词
林分结构
产流量
产沙量
灰色关联法
天山中部
stand structure
runoff formation
sediment yield
grey correlation analysis
the central Tianshan Mountains
