摘要
应用多元回归分析了小陇山林区日本落叶松幼林生长与立地因子的关系，筛选出影响日本落叶松幼林生长的主要立地因子是土壤腐殖质层和有效土层厚度、坡度、海拔；并采用数量化理论（Ｉ），将研究区域划分为２个立地类型组、３０个立地类型，同时评价了不同立地类型日本落叶松林地的生产力。
On the basis of analysing relations of site factor to yong stands growth of Larix leptalepis by mutiple regression analysis in Xiaolong Mountain forest area, this study screen out main site factors which affect growth greatly: thickness of soil humus ione and avaliable ione slope degree and altitute.Furthmore, by quantitative theory the trial area have been divided into 2 sity type group and 20 site type, and productivity of forest land in different site type have been evaluated af the same time.
出处
《甘肃林业科技》
1999年第2期1-6,共6页
Journal of Gansu Forestry Science and Technology
关键词
日本落叶松
立地类型
质量评价
Larix leptalepis
sity type
quality assessment
