新西兰的一种森林树种。
本文评述了群体同工酶基因位点遗传结构研究中的主要度量方法及其在森林树种中的应用概况。
The main methods to characterize population genetic structure at isozyme loci and their applications in forest trees were reviewed.
但森林削减坡面径流与侵蚀的效益与森林树种自身的生物、生态学特性及其林分结构状况等密切相关。
However, the reducing benefits of runoff and erosion of forests has a highly correlation with the tree species' biological, ecological property and its stands structural status.
秀木依依、树种繁多的原始森林是一座真正的宝库，从缅因州向南一直延伸至乔治亚州。
The virgin forest with its richness and variety of trees was a veritable real treasure-house which extended from Maine all the way down to Georgia.
美国中东部森林中的树皮光滑的小红枫是雄鹿进行摩擦的理想树种。
The smooth bark of small red maples makes this species ideal for buck rubs in the forests of the mid-eastern United States.
由于树种具有不同的、往往是独特的特性，森林物种组成的变化以多种方式影响着生态系统。
Shifts in forest species composition ramify through the ecosystem in many ways because tree species have different, often unique properties.
由于森林砍伐，很多树种濒临灭绝。
Hundreds of tree species face extinction because of deforestation.
长期影响主要是由树种组成的变化以及随之而来的森林结构、生产力和养分吸收的变化所导致的。
Long-term effects are primarily mediated by changes in tree species composition and the consequent alterations of forest structure, productivity, and nutrient uptake.
它们早早在森林的新区域中顶上阳伞，让下层进驻速度较慢、密度较低的树种可以长得更为从容些。
They help form the pioneer parasols for new patches of forest, and in their understory slower, denser trees can grow at a more leisurely pace.
这是巴西的大西洋森林或称马塔亚特兰迪卡（Mata Atlântica），它不仅是29种极度濒危脊椎动物的家园，而且每英亩树种密度在世界上也首屈一指。
Brazil’s Atlantic Forest, or Mata Atlântica, is home to 29 critically endangered vertebrates, and holds the world’s highest concentration of tree species per acre.
森林是某种原始栖息地，并可能存在一些极为珍贵的树种。
The forest is pristine habitat of a sort likely to contain some extremely valuable pieces of timber.
就树种而言，科学家门认为，这片森林的生长期应该在1 000 ~ 2 000万年以前。
Based on the tree species, the scientists think the forest lived between ten and two million years ago.
拥有丰富多样树种的原始森林是一个真正的宝库，它从缅因州一直延伸到乔治亚州。 %。
The virgin forest with its richness and variety of trees was a real treasure-house which extended from Maine all the way down to Georgia.
在欧洲，林业更加先进，无商业价值的树种被视为原生森林群落的成员，被合理的加以保护。
In Europe, the forest is more advanced, non-commercial value species is considered a member of the native forest community was reasonable to protect them.
地位指数是立地质量相对于具体树种的数量化反映，也是森林经营和收获预估的重要依据。
Site index is not only the quantity reflection of the of site quality of different species, but the important basis of forestry management and harvest.
对于我国亚热带森林主要树种异戊二烯的排放速率进行了初步测定。
The emission flux of isoprene from major species in subtropical forest is also measured.
一的基本特点，是热带森林的存在非常罕见的树种。
One of the fundamental characteristics of tropical forests is the presence of very rare tree species.
城市森林建设的基础工作就是绿化树种的选择。
The element task of the construction of the urban forest is choice of selecting greening trees.
因此，应重视通过调整物种组成，增加阔叶树种比例以增强森林的自肥能力。
Therefore, it should be emphasized to enhance the self - fertilization capability of forest by adjusting the species composition and increasing the proportion of native broad - leaved species.
本文通过植物分子式的方法确定不同树种的含碳量，以此为参数对我国的森林碳汇量进行了估算。
This paper estimates the carbon content of different trees by the plant molecular formula, and estimated the forest carbon sequestration in our country using the carbon content as parameter.
在对森林可燃物类型划分的研究进行回顾的基础上，提出了考虑树种信息的分类方法。
Based on review of the status of the study on forest fuel type classification, a classification method considering tree types was put forward.
利用2003年河南省森林资源清查资料，建立不同优势树种生物量与蓄积量之间的回归方程，对河南省森林的碳储量进行了推算。
Based on the data of forest resources inventories of Henan Province in 2003, forest biomass carbon storage is estimated using regression equation between biomass of various tree species and volume.
浙江仙居俞坑森林群落植物种类丰富，优势种不明显，群落中植物种类以常绿阔叶树种为主，落叶阔叶成分也有一定比例。
The Yukeng forest community in Xianju County of Zhejiang Province has abundance of plant species, of which the dominant population is not so clearly classified.
关山的森林覆盖率达到了36.56%以上，主要树种包括：桦树、白杨树、椴树。
The mountain forest coverage rate is 36.56% , main species including birch , poplars , lime tree .
利用一些树种的分布资料，进一步论证了森林上限及亚寒带针叶林的分布与WI间的关系。
The relationships between the distributions of forest limit and subarctic coniferous trees and WI were examined in detail.
但是高分辨率遥感影像在林业领域中的应用面临诸多问题，如数据源的价格偏高、图像阴影无法去除、树种识别困难和森林蓄积量估测精度不高等。
However, there appear many problems in its application in forestry, such as the high price of data, the irremovability of image shadow, the low accuracy of quantitative estimation, etc.
对南亚热带森林群落恢复标准化示范区23个阔叶树种的早期生长进行了调查与分析。
The early growth of 23 broad-leaved tree species from the south subtropical forest community restoration standardization demonstration area were investigated and analyzed.
木兰科植物在植物系统分类学上具有重要地位，也是北半球亚热带森林的重要组成树种，主要集中分布于我国西南部和南部。
Magnoliaceae plants, which have important role in botanic systematic taxonomy and are also important trees in sub-tropic forests, mainly distribute in South and Southwestern China.
根据子午岭林区林虫区系组成和区划特征，结合主要树种害虫危害特点，提出了预防和除治子午岭林区森林害虫的3项措施。
Based on the fauna composition and division characteristics of forest pest insects in Ziwu Mountains and damage of pests on important tree species, 3 control countermeasures were provided.
研究南京地区灵谷寺、栖霞山和琅琊山的森林动态，结果表明，枫香、白栎、栓皮为优势树种的森林类型是灵谷寺区域相对稳定的森林类型；
The dynamics of the forest in Nanjing has been studied. It is found that the Spirit Valley forest will develop into Liquidambar-Quercus fabri-Q.
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