摘要
利用 1 997年卫星片并结合实地调查 ,在对平顺县林业现状分析的基础上 ,结合既往组合立地划分及立地质量调查成果 ,确定了平顺县防护林体系各林种组成类型及适宜立地类型 ,采用图表作业法 ,按全县 42 73个小班的海拔、坡向、土层厚度三个主导立地因子 ,确定各小班适宜林种树种 ,以此为依据确定各林种面积及其比例。
Using the star photograph of forest in 1997 and combing the investigation of local situation,the present forestry situation in Pingshun county was analyzed.Through the study of site classification and site quality that have been made ,construct type and site type of tree species for shelterbelts were determined in Pingshun County.According to three main factors(elevation,slope direction,soil deep)of 4273 small masses in the county,tree species,planting area and species ratio for every small mass were determined.
出处
《山西林业科技》
2002年第4期7-11,共5页
Shanxi Forestry Science and Technology
基金
国家"九五"科技攻关项目 (96 - 0 0 7- 0 4- 0 1)
