Based on the characteristics of rural forest management and forest management inventory,ac-cording to the ecological characters of forest species of trees and eco-environment conditions in rural areas,the research divided the forest ecological factors,measured the power coefficient of each forest ecological factor,graded and quantitized the forest-ecological adaptability.
针对乡村森林经营的特点,以森林资源二类调查资料为基础,根据森林树种的生态学特性和经营管理范围内的生态环境条件,进行森林生态因子划分、权重确定及其适宜性分级与定量化,运用综合评价法原理提出生态适宜性指数来定量表达林分和区域森林生态适宜性。
FS powder can be used as a substitute for coal dust to prevent metal penetration.
FS粉可以取代煤粉作抗粘砂材料,其加入量比煤粉少,可以显著降低型砂的灰分、水分和发气量,提高透气性。
FS powder can substitute for coal dust to prevent metal penetration in the green molding sand casting.
在湿型砂中采用FS粉代替煤粉,能够降低型砂中的水分、灰分、发气量,提高了型砂的透气性、强度和造型生产率,减少粘砂,气孔,砂眼等缺陷,同时可以使得工人的工作环境也得到改善。
it introduces initial commercial application of diesel oil non-hydro refining technology by FS method in Mudanjiang Petrochemical Complex.
介绍了FS法柴油精制技术在牡丹江石油化工厂的首次工业应用。
New Zealand forest tree.
新西兰的一种森林树种。
common forest tree of the eastern United States and Canada; used especially for pulpwood.
美国东部和加拿大一种常见的森林树种；纸浆用树种。
large African forest tree yielding a strong hard yellow to golden brown lumber; sometimes placed in genus Sarcocephalus.
非洲大型的森林树种，黄到黄褐色树种；有时归入榉科。
Development of Hyperspectral Remote Sensing Application in Forest Species Identification
基于高光谱遥感技术的森林树种识别研究进展
To convert(open land)into a forest by planting trees or their seeds.
造林，绿化通过植树或播撒树种变（荒地）为森林
They plant trees, build bridges across rivers in forests, and so on.
他们种树，在森林中的河流上架桥等。
Study on the Mechanism of Calcium Cycle of Dominant Tree Species in Maolan Karst Forest;
茂兰喀斯特森林优势树种钙循环机制
The Study on Reducing Pollutants of Foundationsl Tree Species of Urban Forest
城市森林基调树种降污功能评价研究
There are more than 10 excellent species for management, more than 10 accessory species and 5 precious planting species.
迭部林区现有优良森林经营树种10余种,辅助树种10余种,珍稀造林树种5种。
take to the forest,woods,jungle,etc
逃进森林、树林、丛林等
The Investigation of Garden Plants Species in Baoji City and the Research on Construction of Forest City;
宝鸡市园林树种调查及构建森林城市的研究
Analysis of Reforestation Effect of Choosing Tree Species for Forest Restoration in Logging Slash
采伐迹地森林恢复树种选择造林效果分析
Analysis on the Differences in the Growth of Different Species of Urban Forest in Xiamen
厦门城市森林改造不同树种幼林生长差异分析
Transpiration of four tree species under an urban environment
城市森林建设四种乔木树种蒸腾耗水特征
Photosynthesis and Transpiration Characteristics of Three Typical Tree Species in the Forests of Nanling Mountains,Northern Guangdong
南岭森林3种常见树种光合-蒸腾作用特性
The Tree Species Selection and its Effect Evaluation to Urban Forest in Baotou City
包头市城市森林绿地树种选择及效果评价
Transpiration Characteristics of Main Trees Seedlings of Urban Forest on the Loess Plateau;
黄土高原城市森林常见树种苗木蒸腾耗水研究
The Study on the Flooding Resistances of Some Fine Landscape Trees in Urban Forests;
几种城市森林优良景观生态树的抗涝性研究