由于森林砍伐，很多树种濒临灭绝。
Hundreds of tree species face extinction because of deforestation.
不同的树种对土壤的形成和性质有不同的影响。
Different species have different influences on soil formation and soil properties.
树种植在岸上。
这个岛屿是加拿大最小的省份，是各式各样艳丽的秋季树种的家园。
The island, the smallest of the Canadian provinces, is home to a variety of showy fall species.
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.
另一种树种的有机凋落物可能不会添加这么多酸，但会添加较多的其他物质。
The organic litter of another tree species might add less acid but more of something else.
害虫通常以特定的树种为目标，一旦形成，它们通常会成为生态系统的永久组成部分。
Pests often target specific tree species and, if they become established, they usually remain as permanent components of the ecosystem.
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.
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.
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.
看，好多人正在紫薇公园里种树种花！
Look, many people are planting trees and flowers in Ziwei Park!
榕树种得越多，村民得到的干净的水就越多。
The more banyan trees are planted, the more clean water villagers will get.
枫树种子也利用风。
其目的是扭转树种数量下降的趋势，或至少保存所有树种的“遗传物质”。
The aim is to reverse the decline in the number of tree species or at least to preserve the "genetic material" of all of them.
温和地带的栎木和山下的植物，这些不同树种形态的垂直分布在海岛的斜坡山是清晰可见的。
The oaks in the temperate belt and the plants under the mountain are scattered distinctively and vertically on the slopes of the island.
在2012年的一项调查中，71%的果树种植者和近80%的葡萄干和浆果种植者表示他们劳动力短缺。
In a 2012 survey, 71 percent of tree-fruit growers and almost 80 percent of raisin and berry growers said they were short of labor.
大部分热带树种的实生苗为子叶出土。
马鲁拉树是原产于南非和东非的落叶树种。
The Marula is a deciduous tree native to Southern and Eastern Africa.
除了花，你也可以给你的爱人买棵树种在花园里。
Instead of flowers, you could buy your loved one a tree to plant in their garden.
我搜集落到地上的不同树种的树枝样本进行测量。
I collected samples of branches that fell to the ground from different trees, and I made measurements.
在那浩瀚的沙漠中，生长着一种稀有的树种，叫胡杨。
There, in the boundless desert, grows a rare variety of tree called euphrates poplar.
同时，他们还可以利用这些树种的树叶和果实活下来。
And, also, they use the leaves and the fruits of those tree species just to survive.
该树种中最强健的个体可以活到两千多岁。
The hardiest members of the species can live to be 2, 000 years old.
为什么不同的树种中有不同的斐波那契布局模式存在？
相比之下，天然发芽的树木多为当地树种并且适应性更强。
By contrast, trees that sprout naturally are native species and more resilient.
中国是目前世界最大的杨树种植国，其次是法国。
China is now the world's biggest poplar growing country, followed by France.
这迫使杏树种植者降低成本，减少了蜂箱的租用量。
That has caused growers to cut costs, and therefore hire fewer hives.
比如，树根的周围经常被某种真菌环绕着，它们从树种汲取养分。
For example, tree roots are often surrounded by fungal growths that take nutrients from the trees.
杨树是生长较快的树种之一，生产周期为5至15年，用途广泛。
Poplar is one of the faster growing trees, with production cycles of 5 to 15 years, and has a wide range of end-uses.
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.
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