浙北杉木林立地条件类型的划分与评价

Classification and Evaluation of Site Types for Chinese Fir Forests in Northern Zhejiang

本文在数量化回归结论分析的基础上,对湖州市进行了立地类型区、立地类型亚区和立地类型的划分。分类的依据为地貌类型、母岩、土壤类型、土层厚度和有机质含量。文章还对各立地类型的杉木生产潜力进行了评价,认为在湖州市地位指数级小于8的造林地不宜栽杉,等于8的应慎重发展,10～12的宜发展杉木,大于14的主要用来培育中径材,但都应加重经营集约度。

On the basis of quantitative regression analysis, this paper classes the site regions, site subregions and site types of Chinese fir forests in Huzhou City; evaluates the productibilities of each site type. Topographic fectures, mother rocks, soil great groups, soil layer deep and organic matter content are of division fundations. The areas where SI<8 are not suitable to plant Chinese fir, SI=8 should control and SI 10～12 are better. The areas where SI>14 are the best to cultivate middle sized timber. Intensive management should strengthen in the cultivation of Chinese fir.