timberline

Estimation of total carbon-containing gas emission from main tree species in forest fires in Daxing an Mountains;

大兴安岭森林火灾中主要乔木树种含碳气体释放总量的估算

And there were 177 species of trees among them,which are subdivided into 111 genera and 47 families.

通过对佛山市区所有独立城市绿地中的植物物种调查表明,佛山市区城市绿化中应用了338种(包括变种、栽培种)植物,隶属215属86科;其中乔木177种,隶属111属47科;乔木种类最多的5个科是桑科、棕榈科、桃金娘科、苏木科和蝶形花科。

The Zhifanggou watershed in Ansai county is an example of a Loess Hilly Region and the characteristics of nutrient cycling and balance of 1 tree,4 shrub,and 9 herbage vegetation types have been systematically studied during a period of vegetation stabilization and rehabilitation.

以黄土丘陵沟壑区典型小流域纸坊沟流域为例,系统研究流域在植被稳定恢复期1种乔木、4种灌木和9种草地植被类型的养分循环平衡特征。

Application of the salt tolerance arbor on Saline and Alkali Soil;

耐盐碱乔木在盐碱地环境中的应用概况

Investigation on growth degree of primary arbor in Southern mountain and Northern mountain of Xining city;

西宁市南北山主要乔木树种的生长量调查

Analysis of the diversity of arbors in major parks,Fuzhou;

福州市主要公园乔木树种多样性分析

Pine and cypress species are currently the main trees used in the construction,but their ecological effect on soil conservation is not quite clear yet.

松柏类乔木是目前我国公墓绿化的主要树种，但对它们控制水土流失的生态功能却不十分清楚。

Separation of Red Pigments from Magnoliaceae×soulangeana Flower by Macroporus Resin Column Chromatography;

大孔树脂法分离二乔木兰花红色素