人们对森林衰退还知之甚少，但森林衰退会导致树叶和针叶大面积脱落。
Forest decline is still poorly understood but leads to the loss of a high proportion of a tree's needles or leaves.
通过吮吸铁杉幼嫩枝的汁液，树木的生长被毛茸茸的叶蝉阻碍，导致针叶从深绿色变为灰绿色，并提早掉落。
By sucking sap from the young twigs of the hemlock tree, tree growth is retarded by the woolly adelgid, causing needles to change color from deep green to grayish green and to drop prematurely.
大多数纸是由针叶树的纸浆制成的。
在北美西部，大多数农业活动已被速生针叶树的单一栽培所取代。
In western North America, most have been replaced by monocultures of fast-growing conifers.
相反，针叶树将侵入白杨树林的边界，越来越多地遮挡白杨所需的阳光。
Instead, coniferous trees will invade the aspen grove's borders and increasingly block out sunlight needed by the aspens.
人们在针叶树和某些其它树木的硬化树脂中发现了昆虫，甚至发现了小型无脊椎动物。
Insects and even small invertebrates have been found preserved in the hardened resins of conifers and certain other trees.
对于许多树木来说——常绿的针叶树是一个例外——最好的策略是在春天之前放弃光合作用。
For many trees—evergreen conifers being an exception—the best strategy is to abandon photosynthesis until the spring.
它被归为红豆杉科，而红豆杉现在被归为松类针叶树。
It is classified in the family Taxaceae, which is now classified as a conifer in the order Pinales.
我们的结果表明 GH2 是一个主要的多功能CAD来合成针叶树基。
Our results suggest GH2 acts as a primarily multifunctional CAD to synthesize coniferyl.
针叶树篱，如紫杉、刺柏、红木等。
其它几种针叶树产生小雄花序。
蕨类植物和针叶树的木质部仅含有管胞。
斯茂拉赫已经掘了个洞，深度足以到达下层的针叶和球果。
Smaolach had dug a hole deep enough to reach a layer of dry needles and cones.
现在没有了针叶林，只有碳化的树木和空洞依然存在。
Now instead of coniferous forests there are just carbonized remains of trees and voids.
软木是指速生的针叶林品种，占世界木材产量的80%。
Softwoods are fast-growing coniferous species that account for 80% of the world's timber.
树上指向天国方向的针叶象征着人类走向天国时的祈祷。
The needles on the tree point heavenward symbols of man's prayers as they go toward heaven.
它有多种类型的生态系统，其中亚高山针叶林最丰富的。
It has many types of ecosystems, but the subalpine forest is most abundant.
例如，随着冻土融解，二氧化碳增多，针叶林将继续北移。
The boreal forest will creep northwards, for example, as the permafrost thaws and carbon fertilisation increases.
营巢在针叶林、常绿林、杂木林等各种类型森林的荆棘或矮树上。
Nesting in coniferous forest, often greenwood, miscellaneous wood forest types of forest tree thorns or short.
“蓝色”- 63000个湖泊，“绿色” -针叶树林地带。
短叶松穿过了加拿大北部针叶林带，并一路延伸到东海岸，直到美国。
Jack pines cross the boreal forest of northern Canada, stretching all the way to the East Coast and down into the United States.
在这之后出现了鱼类，爬行类，哺乳动物，蕨类，针叶树和开花的植物。
They were followed by the emergence of fish, reptiles, mammals, ferns, conifers and flowering plants.
拖到绘图页后，可以添加针叶树，如松树、杉树、云杉、红木或雪松。
Drag onto the page to add a conifer tree such as pine, fir, spruce, redwood, or cedar.
拖到绘图页后，可以添加针叶树，如松树、杉树、云杉、红木或柏树。
Drag onto the page to add a conifer tree, such as pine, fir, spruce, redwood, or cypress.
拖到绘图页后，可以添加针叶树，如松树、杉树、云杉、红木或刺柏。
Drag onto the page to add a conifer tree, such as pine, fir, spruce, redwood, or juniper.
世界第十三大湖泊的故乡(以表面积计算)，以及戈壁沙漠里的针叶林。
Home to the 13th-largest lake in the world (in surface area) as well as taiga forest and the Gobi desert.
据估计，单独一个大雨林或针叶林其蒸发面积大约相当于一个40英亩的湖泊。
It has been estimated that a single large rainforest or coniferous tree has an evaporative surface area roughly equal to a 40 acre lake.
春天到了，原本墨绿色的又细又短的针叶，变成了翠绿色的又粗又长的针叶了。
By spring, the original dark-green short of the fine needles into the emerald green of the coniferous long.
该沙漠以南地区还存在其它颜色，它们来自史前一座针叶树林所遗留下来的化石。
Other colours found along the desert's southern fringe stem from the fossilised remains of a prehistoric coniferous forest.
一个有趣的事实：图瓦位于一个不同气候的地区：针叶林在北部和阿尔卑斯山的草原。
An interesting fact that Tyva is situated in different climatic zones: taiga in the north and Alpine grasslands in the west.
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