...下载_文档资源库 关键词 : 城市绿化树种 ; 计算机指标体系 ; 数据要求 [gap=5967]Key words :Urban afforestation tree species ; Information index system ;Required data ...
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城市街道绿化树种结构 urban street tree populations
该项研究为城市绿化树种选择、苗木调入等提供依据和参考。
This study would provide reference in choosing virescence species and introducing into seedling in Harbin city.
城市绿化树种的综合评价，一直以来都是困扰园林工作者的难题。
The comprehensive appraisal to urban greening tree species is always a problem troubled botanical garden workers.
研究测定了部分城市绿化树种对重金属大气铅、镉污染物的吸滞能力。
The absorption and purification ability of some tree species to heavy metal pollutants, Pb and Cd in the atmosphere are measured and studied.
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