摘要
通过定点封山育林15个县的实地调查和349株样木生长量测定,与1984年一般林分相比,其平均生长率:松增长0.64%、杉增长1.93%、阔叶树增长0.74%,每亩平均林木株数从16株提高到23.2株。
Actual investigation on fixed regions for closing hillsides to facilitate affor-estation in 15 counties and mesutement of 349 sampling wood increment showed that the ave-rage growth percent compared with normal forests of 1984 was 0.64% higher in pine, 1.93%in Chinese fir, 0. 74% in broadlef tree, mean number of tree per mu increased into 23.2 from16.
出处
《浙江林业科技》
北大核心
1990年第1期57-61,56,共6页
Journal of Zhejiang Forestry Science and Technology
