立地类型划分与抗逆树种选择是半干旱风沙区适地适树造林的技术关键。
The division of site type and selection of resistant species are key techniques to afforestation of matching trees with site conditions in semiarid sand area.
利用118块野外标准地资料,对晋东南石灰岩山地油松人工林进行了立地类型划分及生长评价。
The division of site types and appraisal of growth were studied with data from 118 sample plots on Chinese pine in the calcareous mountain areas, Shanxi Province.
主要依据适地适树原则及工作的具体需要进行造林设计,划分了造林地主要立地类型,并制定了林分改造年度计划和造林地类型表;
Mainly according to the rules of suitable trees and suitable sites and the work need, authors divide the stand types, then design the yearly stand rebuilding plans and stand types tables.
划分森林立地类型,综合评价林地质量,是适地适树,科学地进行营造林和预测森林生产力的基础。
Dividing the forest site type, comprehensive appraisal the quality of forest land are the bases to match species with the site, scientifically mange and afforest and predict productivity.
依据大量的调查资料,应用有序样本聚类方法,按林分类型、立地条件和林龄来确定次生林改造生长量划分标准;
Based on a large amount of investigating data, the authors use cluster analysis method with ordered samples to set dividing standards for the growth rate of secondary forests rechange.
研究结果:南岭山地(江西部分)划分为两个森林立地亚区,两类森林立地类型区,46个森林立地类型。
The results show that the Jiangxi part of NanlingMountainous area can be divided into two forest site distribution subregions, two forest site type regions and 46 forest site-types.
研究地区共划分为12个类型,编制了立地类型表,并采用热量、水分、养分三段式命名法为备立地类型命名。
According to the results, the region was classified into 12 site types at a fixed similarity level, which were named by three-section name method (heat, water and nutrient).
研究地区共划分为12个类型,编制了立地类型表,并采用热量、水分、养分三段式命名法为备立地类型命名。
According to the results, the region was classified into 12 site types at a fixed similarity level, which were named by three-section name method (heat, water and nutrient).
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