树种

Tree species diversity in the secondary forest was significantly lower than that in montane moist evergreen broadleaved forest at climax stage as compared by Shannon-wiener index, Simpson's diversity index, and Fisher's index.

以Shannon-Wiener指数H、Simpson指数D和Fisher指数α计算了栎类次生林的树种多样性(H=1.42±0.27；D=0.65±0.09；α=2.59±1.16)，并与中山湿性常绿阔叶林的树种多样性进行了比较，结果显示处於演替顶级阶段的中山湿性常绿阔叶林具有更高的树种多样性。

Arboreal plant Paulownia fortunei, Ulmus pumila and Broussonetia papyrifera had relatively higher complex ability to accumulate heavy metal.Cedrus deodara, Platanus acerifolia and Ligustrum lucidum also had some complex ability to accumulate heavy metal. These species could be selected as the greenery tree as well as purified tree in the area. Among the herbaceous plants, the accumulation ability of Cynodon dacytlon was better than others.

经对比筛选，木本植物中泡桐、白榆和构树具有较高的重金属综合富集能力，雪松、悬铃木和女贞等树种亦有一定的富集能力，这些树种可被选为该区净化重金属污染的绿化树种；草本植物中，狗牙根的富集能力大大超过其他草本植物。

The structure and heterogeneity of urban green space in the five districts in Fuzhou , which included the main tree species with diameter at breast height distribution, height class, health class, importance value, relation and the green space patches with areas distribution, perimeter distribution, porosity, connectivity, marginal density, dominance, the characteristics of geo-statistics and so on, were studied in quantification by the use of the principle of landscape ecology combining with the method of studying porosity and connectivity and geo-statistics.

本研究应用景观生态学的原理结合孔性、连通性研究方法和地统计方法对福州市五个行政区的绿地结构和异质性进行了量化研究，包括：城市绿地主要树种、树种的胸径分布、树高等级、健康等级、重要值和多样性、主要树种间的关联度以及绿地斑块大小分布、周长分布、斑块的孔性、连通性、边缘密度、优势度、斑块的地统计学特性等。

Based on the status of suburban forest of Harbin, 49 well-grown afforesting tree species including 32 species arbor, 16 species shrub and only 1 species vine which are mainly Pinus sylvestris var.

本论文根据树种选择的依据，针对城郊环境特点和城郊森林的功能需求等，以树种的特征、生态习性以及功能(生态功能、景观功能、经济功能)三大要素中的31项单因素指标为研究内容，针对不同林种的功能需求选择适宜的树种。

Other species, such as Robinia pseudoacacia, Sophora japonica,Broussonetia papyrifera, Forsythia suspensa Vahl., Diospyros kaki, Koelreuteria paniculata and Amorpha fruticosa also have this kind of effect.

结果表明：树木对SO2有吸收累积的作用，但不同树种之间差异较大，其中绦柳净化SO2的能力最强，刺槐、国槐、构树、连翘、栾树、柿树、紫穗槐等树种也是优良的净化SO2污染的树种。

Chorisia speciosa, Pterocarpus indicus and Terminalia mantaly, are the trees for landscaping, introduced in coastal area of Fujian in recent years.

美人树、紫檀和小叶榄仁是福建沿海地区近年引进的园林绿化树种，经过栽培观察，三个树种都具有抗性强、适应性广的特点，且观赏价值和经济价值较高，可作庭园景观树种和道路遮荫树种推广栽培。

In addition, the authors suggest:① The research of firs hybridization should be carried out on a large scale in China;② In hybridization, the phylogeny of Abies must be considered, and we should put emphasis on the intro-section hybridization;③ The research on the strobili phenology of firs can ensure the hybridization succeed;④ The research is also important for the hybridization to study the genetic diversity of Abies;⑤ We can use the biotechnology and the knowledge of modern molecular biology to overcome the difficulties of breeding.

作者对我国开展这项研究提出了几点看法：①应大力开展我国冷杉树种间，以及与国外冷杉树种间的杂交研究；②杂交时必须考虑种的系统关系学并以派内杂交为主导方向；③对我国冷杉属树种进行开花结实习性研究；④开展我国冷杉属树种的系统学和遗传多样性研究；⑤结合现代生物技术和分子生物学知识，克服常规杂交中的困难。

Survey varieties of trees application situation among them, the content includes afforesting abundance degree of the varieties of trees, the application of the native soil varieties of trees, the proportions of all kinds of varieties of trees, management maintains etc.

对其中的树种应用情况进行调查，内容包括绿化树种的丰富度，乡土树种的应用，各类树种的比例，管理养护等。

Pigments potent and air temperature are are more important than other factors. The color changing of foliage trees leaf resulted from these comprehensive factors, We must fully respect them in landscape design. Meanwhile, we should make of the bionomics and ecologic habitus of these trees, and make sure to let them show vivid colors and the most beautiful landscape effictiveness in urban environment, ensure the landscape designs more scientific and artistic.

观叶树种的叶色是在许多因素综合作用下发生变化的，在利用观叶树种进行园林景观设计时必须充分考虑影响观叶树种叶色的各种因素，同时对观叶树种的生物学特性和生态习性有深入的了解，使其在城市环境中达到最鲜艳的颜色，产生最佳的景观效果，使园林植物造景更具科学性和艺术性。

Based on the field survey, data collection and statistics of tree resources in the typical plant community and the natural vegetation abundant areas in Shennongjia nature reserve, Wudangshan nature reserve, Xingdoushan nature reserve, Jiugongshan nature reserve, Tiantangzhai forest park, and the landscape trees resource, growth effects and the application situation in the selected typical cities of Wuhan, Yichang, Shiyan, Xiangfan, Enshi, Huangshi, Xiantao, Daye, Xianning etc., and combined with the planning of city system of Hubei Province, the trends and further requirements of urban greenings and the natural vegetation distribution of Hubei Province, this research, aiming at providing the data and scientific bases for the further development and construction of urban green system, undertook the zoning and planning of tree species of the cities of Hubei Province.

本研究在对湖北省神农架自然保护区、武当山自然保护区、星斗山自然保护区、九宫山自然保护区、天堂寨森林公园等天然植被荟萃的典型区域进行树种资源和典型群落实地调查、资料收集和对我省武汉、宜昌、十堰、襄樊、恩施、黄石、仙桃、大冶、咸宁等代表性的城市市区内的园林树种的种类、应用状况、生长效果等方面进行了实地调查和统计分析的基础上，结合湖北省城市体系规划、城市园林绿化发展的趋势、要求和各地植被规律等特点，对湖北省城市园林树种进行了区划和树种规划，以期为湖北省城市绿地的进一步建设和发展提供资料和科学依据。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。