摘要
以桉树、杉木、马尾松、落叶松及樟子松等为对象 ,利用样地调查资料 ,结合已有研究成果 ,对造成我国人工林生产力低下的多种自然因素 ,进行了系统地分析研究。结果表明 ,按人工林现实分布格局及立地质量水平 ,全国人工林气候—立地生产潜力 (材积 )平均为 8 6m3 hm2 ·a ;现有人工林由于大面积幼龄林的存在 ,所带来的生产力总体水平下降的幅度为 31%～ 35 %。
Based on the investigation data from the sample plots of \%Eucalyptus\% spp. \%Cunninghamia lanceolata, Pinus massoniana, Larix\% spp. and \%Pinus sylvestris\% var. \%Mongolica\% etc, and combining with other results of research projects on plantation, main natural factors that effect the productivity of Chinese forest plantation were studied systematically. The results showed: (1) According to the actual distribution of Chinese plantation and the site quality, the average climatic-site potential of production of Chinese forest plantation was 8.6*!m3/hm2·a. (2) Because the area proportion of sapling stand to the total plantation area was too large, there had been a 31%～35% reduction in the overall level of forest productivity of China plantation.
出处
《林业科学》
EI
CAS
CSCD
北大核心
2001年第3期72-77,共6页
Scientia Silvae Sinicae
基金
中国博士后科学基金资助
