摘要
通过对桦树柠条混交林及桦树纯林、柠条纯林的林木生长量、林分生物量、根系分布规律等的调查研究，结果表明，混交林的桦树高生长量比纯林桦树提高47．6％～119．5％，胸径提高44．1％～143．1％；混交林的林木生长量及单株生物量均高于纯林；混交林中桦树根系分布比纯林均匀，使林木充分利用土壤养分、水分、空间，利于林木的生长。
Growth of timber, stand biomass, root system distribution law of mixed forest of Betula platyphyUa and Caragana microphyUa Lam. were investigated. Result shows that height growth and DBH of Betula platyphylla mixed forest increases by 47.6%-119.5% and 44.1% -143.1% than that of Betula platyphylla pure forest;tree biomass and individual biomass of mixed forest are higher than that of pure forest. Root system distribution of Betula platyphylla in mixed forest is more even than that of pure forest , thus forest tree fully use the soil nutrient, water, and space. It is fovor of growth forest.
出处
《防护林科技》
2008年第3期17-18,共2页
Protection Forest Science and Technology
关键词
桦树
柠条
混交林
纯林
生长效应
Betula platyphylla
Caragana microphylla Lain.
mixed forest
pure forest
growth effect
