太行山石灰岩山地不同组合立地面积调查——以平顺县为例  

Investigations on the Areas of Different Types of Sites in limestone Region Taihang Mountain 1)

作　　者：李永生[1,2] 张晋英[1,2] 吕皎 刘劲[1,2] 王玉生 

机构地区：[1]山西省林业科学研究所 [2]山西省水利学校

出　　处：《山西林业科技》1997年第1期19-23,共5页Shanxi Forestry Science and Technology

基　　金："八五"国家攻关项目

摘　　要：采用成数抽样方法，利用平顺县１∶１万地形图，对平顺县典型的２１９条沟叉（每个沟叉为一封闭的小集水区）进行了不同土层厚度的地块面积比例调查。将调查资料，按海拔梯度进行分组，统计每个沟叉不同土层厚度不同坡向地块的面积。用加权平均法，计算了同一土层厚度同一坡向地块占沟叉总面积的百分比。进而求算了各海拔梯度组合立地的面积。Areas of hilly lands with different thickness of soil from 219 typical gullies in Pingshun county were investigated with percentage sampling method on a topographic map(1:10000),classfied on elevation,and then counted up on different soil thickness and slope aspect for each gully.The weight average percentage of areas of sites with same soil thickness and same slope aspect to the gully's area,and the areas of sites for each elevation were counted The precision for this investigation was given at last.

关 键 词：森林 石灰岩山地 组合立地 沟叉 成数抽样 

分 类 号：S718.5[农业科学—林学] S757.213