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一、竹类资源发展现状和分布 1.发展现状 四川省地处亚热带,气候温和、降水充沛、湿度大,适宜竹类植物生长,是我国竹类植物主要分布地区之一。据调查统计,全省有经济竹种23属、154种,资源丰富,在国内居首位。全省现有竹林面积73.90万ha,约占全省有林地面积的10％。其中,经济竹林34万ha,占全省竹林总面积的45.95％,蓄积量1435.27万t。经济竹林面积近几年来增加较快,其原因,第一,伐树留竹成竹林。在原有针、阔叶树与竹混交的复层林,树木逐渐被砍伐,林下竹变成纯竹
I. Development Status and Distribution of Bamboo Resources 1. Development Status Sichuan Province is located in the subtropical zone with mild climate, abundant rainfall, high humidity and suitable for the growth of bamboo plants. It is one of the main bamboo plant species in China. According to the survey statistics, the province has 23 species of economic bamboo species, 154 species, rich in resources, ranking first in the country. The province’s existing bamboo forest area of 739,000 ha, accounting for about 10% of the province’s forest area. Among them, the economy of bamboo 340,000 ha, accounting for 45.95% of the total area of bamboo forests in the province, volume 14352700 t. Economic bamboo area increased rapidly in recent years, the reason, first, cut trees stay bamboo into bamboo forest. In the original needle, broad-leaved trees and bamboo mixed multi-layer forest, trees are gradually cut down, under the bamboo into pure bamboo