Components of the north temperate zone, pan tropic zone in adjacent areas, and some exotic introductions, are the main compositions of artificial arbor trees in the areas due to the long times afforestation practice.
多年来的造林实践工作 ,使得人工栽培乔木树种既有适应当地环境条件的北温带成分 ,也有一些毗邻地区的泛热带等成分 ,还有许多外来引进树种成分。
Based on a 2×2 contingency table,interspecific association of 13 main tree populations of the montane elfin forest in shimentai Nature Reserve,Guangdong Province,was studied using variance ratio(VR),~2 text,association coefficient(AC),percentage of co-occurrence(PC),and Pearson r correlation coefficient.
结果表明:13个乔木种群总体呈不显著的负联结;78对种对中,绝大多数种对联结关系未达到显著水平,种对间的独立性相对较强,相关性较弱,只有15对种对存在较强的相关性,这些可能与群落目前所处的阶段和特殊的生境条件有关。
Using the methods of t-test of s~(2) ratio,negative binomial parameter K,mean crowding index,patchiness index,Morisita index and the method of nearest neighbor,the spacial distribution patterns of the main tree populations in montane forest in Caiyanghe nature reserve were studied.
采用方差/均值比的t检验法、负二项式分布指数K、平均拥挤度m、聚块性指数m x、丛生指标I、Morisita指数及最近邻体法对菜阳河自然保护区山地雨林的优势乔木种群的分布格局进行了研究。
The niche breadths and overlaps of 20 main tree populations in the evergreen broad-leaved forest in Simian Mountain, were measured by using the formulas described by Levins ,Hurlbert and PianKa ,and the relationships among niche breadth, niche overlap and interspecific association were discussed in this paper.
利用Levins、Hurlbert生态位宽度公式和Pianka生态位重叠公式测定四面山常绿阔叶林20个主要乔木种群的生态位宽度和生态重叠,并对生态宽度、生态位重叠以及种间联结性的关系进行初步探讨。
Emission characteristics of biogenic volatile organic compounds from four tree species in Shenyang,China
沈阳市四种乔木树种BVOCs排放特征
Floristic Characteristic of Artificial Arbor Trees in Main Soil and Water Losses Area in Loess Plateau
黄土高原重点水土流失区人工栽培乔木树种的区系特征
Allocation about Artificial Arbor Trees According to Site Adaptibility in the Key Areas of Soil and Water Losses of the Loess Plateau
黄土高原重点水土流失区人工栽培乔木树种的区位配置方案
Comparison on Chlorophyll Fluorescence Characters in Eleven Cultivated Tree Species in the Karamay Agricultural Development Region
11种人工栽培树木叶绿素荧光特征比较
an uncultivated cherry tree.
非人工栽培的樱桃树。
The planting and care of woody plants, especially trees.
树木栽培木本植物的种植与护理，尤指树
a family of trees and bushes and herbs of order Myrtales; many are cultivated as ornamentals.
乔木和矮树丛和草本植物科属于桃金娘目；许多种类被栽培是作为装饰物。
wild or seedling sweet cherry used as stock for grafting.
野生或人工栽培的甜樱桃品种，树干可用作嫁接。
Study on Cultivate Characteristic and Management Result of Phoebe Bournei;
珍贵树种闽楠栽培特性与人工林经营效果研究
Research on the breeding and cultivation technique of Tsoongiodendron odorum
优良乡土树种观光木选育与栽培技术研究
As the Chinese saying goes, "it takes 10 years for a tree to grow but 100 years to bring up a generation of ability". Persons of excellent ability have to be reared with great attention and care by institutions and teachers.
「十年树木，百年树人」，优秀人才实有赖学校和教师悉心栽培。
Cultivation of Pleurotus ostreatus Using Elaeagnus angustifolia as a Substitute for Broad-leaved Tree
沙枣树代替阔叶树木屑栽培平菇试验
Introducing Several Ornamental Mallee into Guangxi and Fundamental Research on the Xerophytism;
澳大利亚几种灌木桉树引种栽培及耐旱性能的基础研究
small shrubby tree of Madagascar cultivated in tropical regions as a hedge plant and for its deep red acid fruits resembling small plums.
马达加斯加的一种小的灌木状的乔木，在热带地区作为绿篱植物栽培，果深红色、微酸、味似李子。
Culture Systems of Chinese Fir Plantation for Sustainable Management;
面向可持续经营的杉木人工林栽培制度研究
wood of any of various chestnut trees of the genus Castanea.
各种属于栗树的乔木木料。
An Asian tree(Diospyros kurzii)having mottled gray wood used in cabinetwork.
大理石木一种亚洲的乔木，（大理石木柿树属）木料有灰色斑纹，用于做精细木工家具
eastern Australian tree widely cultivated as a shade tree and for its glossy leaves and circular clusters of showy red to orange-scarlet flowers.
澳洲东部的一种乔木,可遮荫,花红色,橙色到深红色,密集成团,鲜艳夺目,因此广泛栽培。
Study on the Water-Soil Environment Characteristics and Evaluation on the Ecological Adaptability of the Cultivated Tree Species in Karamay Agricultural Development Region;
克拉玛依农业开发区水土环境特征与人工栽培树种生态适应性评价研究