摘要
根据乌江流域野外调查资料 ,在立地因子分析研究的基础上 ,按地域分异规律及多级序逐级控制原则 ,以反映立地困难程度为宗旨 ,将乌江流域岩溶宜林石质山地按大地貌、中地貌、岩组性质、坡度等级及土体连续性分为上、中、下段 3个立地区 ,4个立地类型区 ,4个立地类型小区 ,16个立地类型组和 6 4个立地类型。其类型组和类型不仅体现了地块间的类型差异 ,也体现出石漠化程度的不同 。
In this paper, based on field investigation in Wujiang River Watershed and site factor analysis, by area difference rule and multi grade controlling principles and difficult degree of sites, the difficult regions for forestation of Karst rocky mountain in Wujiang River Watershed will be divided into 3 site areas by macro landscape, 4 site type areas by middle landscape, 4 sub site type areas by rock group character, 16 site type groups by slope degree,and 64 site types by soil continuity, which reflect the difference of type and difficulty for forestation and petrifaction among various lands and provide the basis for macro planning and forestation technique research of Karst rocky mountains.
基金
贵州大学校基金资助项目
关键词
乌江流域
岩溶地貌
石质山地
立地条件类型
山地造林
Wujiang River Watershed
Karst geomorphy
rocky mountain
site type
mountainous forestation
