摘要
在黑龙江省 2个主要土壤侵蚀类型区设立了 2 78块标准地 ,利用获得的原始资料 ,通过树高生长散点图的趋势拟合树高生长导向曲线方程 ,以基准年龄分别为 2 0a、15a ,间距为 1m ,编制了
The site index table of the 4 main planting species for soil and water conservation has been worked out, using the initial data obtained from 278 experiment plots set up in 2 main type zones of soil erosion in HeiLongjiang province, while fitting the steering curve equation of height growth with the trend of scatter diagram of height growth of the trees, in the reference ages, respectively, 20a and 15a, spacing of l m
出处
《防护林科技》
2000年第1期20-22,共3页
Protection Forest Science and Technology
关键词
造林树种
树高生长曲线
立地指数表
planting species
curve of tree height growth
site index table
