红皮云杉人工林立地分类与质量评价

在黑龙江省红皮云杉人工林集中分布的区段内(小兴安岭南麓的绥棱林业局施业区),利用数量化理论I方法对野外调查的130余块标准地的数据进行了立地因子与林分优势平均高的分析,筛选出的立地分类的主导因子为土层厚和坡度,并以此为依据划分出5个立地类型组和15个立地类型。根据不同立地类型的林分生长过程,以林分优势平均高为变量建立Richards方程,同时拟合各立地类型30a时的地位指数。结果表明,生产力较高的立地类型(地位指数13~15)适合于培育速生丰产林。

Site Classification and Quality Appraisal of Picea koraiensis Plantations

An experiment was conducted to study the site factors and average height of dominant trees in Picea koraiensis plantations in Suiling Forestry Bureau located at the south of Xiaoxing'an Mountains using Quantification Theory Type I in accordance with the survey data from 130 sampling plots. Result showed that soil depth and slop gradient were dominate factors for the classification of site types, and the sites were classified into 5 site type groups and 15 site types. Richards equation with average height of dominant trees as the variable was established according to the growth process of the stands of different site types, and the site indexes of different site types after 30 years were fitted. The site types with site index ranging from 13 to 15 are suitable for cultivating fast-growing and high-yield P. koraiensis plantations.