论文部分内容阅读
一、前言位于鄂西南的恩施大山区以树种繁多而著称,但最有发展前途的是杉木.根据森林普查资料:全区有杉木181万亩,立木蓄积量3440000立方米.近几年来,每年造杉木林速度都在10万亩以上,并且出现了一批大面积的丰产典型和单株典型,为今后发展杉木林生产提供了可靠的依据和经验.恩施县的铜盆水林场有杉木林3000亩,立木蓄积量36000立方米,平均每亩单产12立方米.来风县胡家坪林场有杉木林15000亩,立木蓄积120000立方米,平均每亩8立方米.来风
I. INTRODUCTION The Enshi mountainous area located in the southwest of Hubei Province is famous for its large variety of trees, but the most promising is the fir forest.According to the forest census data, there are 1.81 million mu of fir trees and 3.34 million cubic meters of standing tree stock in the whole area.In recent years, The rate of Chinese fir plantation is more than 100,000 mu, and a large number of large-scale typical and single plant varieties have emerged, providing a reliable basis and experience for the development of Chinese fir plantation in the future. 3000 mu, standing volume of 36000 cubic meters, the average per mu yield of 12 cubic meters.Laifeng Hu Jiaping forest has 15,000 acres of Chinese fir forest, standing volume of 120,000 cubic meters, an average of 8 cubic meters per mu.