江西省毛竹栽培区划及立地类型划分的研究

CULTIVATION SUBDIVISIONS AND SITE TYPES OF MOSO BAMBOO (PHYLLOSTACHYS PUBESCENS)IN JIANGXI PROVINCE

毛竹是江西省重要的经济树种,全省现有毛竹林面积793.7万亩,蓄积95737万根,毛竹生产在全省的林业生产中占有相当重要的地位。本文遵照自然规律和经济规律,以气候、地形和土壤等自然因子为主要依据,同时参照毛竹原有分布数量及社会经济状况,把江西省划分为5个毛竹栽培区。并根据立地因子的差异,应用逐步回归分析方法,寻求出主导因子,把江西省毛竹栽培区内划分出27个不同的立地类型。

Moso bamboo(Phyllostachys pubescens)has remained an important economic crop yielding both wood and sprouts in Jiangxi province.A recent survey has revealed its stock of 957,370,000 culms standing in lands of approximately 530,000 hectares, the production of which therefore accounts for a significant part in that of the provincial forestry as a whole,This study proposes a consideration of a)subdividing the Region into five areas where moso bamboos are cultivated, and b)classing the sites therein into twenty-seven types.The assignment of the subdivisions complys with both the natural and the economic laws and has taken such parameters as climate, topography, soils, the original distribution of the groves and the socially economic status into account.The procedures of arranging the site classes include locating differences in parameters in the various sites,and then using the step-wise regression analysis approach to work out the leading factors essential to the classification.