In many semiarid areas there is also a lower timberline where the forest passes into steppe or desert at its lower edge, usually because of a lack of moisture.
在许多半干旱的地区中，同样存在树带界限的下限区域；在这片区域之内，由于缺乏水分，森林下沿区域的植被通常会逐渐变成干草原或沙漠。
If one focuses on the wet months, one calls the Maya homeland a "seasonal tropical forest"; if one focuses on the dry months, one could instead describe it as a "seasonal desert".
如果一个人侧重雨季，就会把玛雅故土称为“季节性热带森林”；而如果侧重旱季，就可以把它描述为“季节性沙漠”。
Saihanba in Hebei Province was once a desert, but now it has become the biggest man-made forest in China.
河北省的塞罕坝曾经是一片沙漠，但现在它已经成为中国最大的人工林。
Natural aerosols are produced by sea salt, desert dust, volcanic eruptions and smoke from forest fires.
天然的浮质是由海盐、沙漠灰尘、火山爆发物与森林火情的烟雾产生的；
The changes are manifested in belts from forest, bush, meadow and steppe to desert.
森林、灌丛、草甸、草原到荒漠呈带状更迭。
Amazon rainforest crosses a "tipping point" where extreme heat and lower rainfall makes the forest unviable - much of it burns and is replaced by desert and savannah.
亚马逊雨林将经历一个“转折点”，极端高温和雨水减少将导致其退化，大部分树木都将被烧毁并由沙漠和草原取而代之。
Home to the 13th-largest lake in the world (in surface area) as well as taiga forest and the Gobi desert.
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。
Regional ecosystem types, such as grass land, desert, and deciduous forest, are called biomes.
地区的生态系统，例如草原、荒漠和落叶林又被称为生物带。
Others are sparse forest steppe and desert vegetation.
其它还有疏林草原和荒漠植被。
Here you witness an astonishing variety of environments, from desert to rain forest, from tropical beach to white snow field, from big, sophisticated cities to vast uninhabited areas.
游客在澳大利亚可以观赏到各种地形风貌，从沙漠到热带雨林，从地处热带的海滩到白雪皑皑的田野，从扑朔迷离的大都市到人迹罕至的旷野。
Desert areas will be dry and baron, There will also be lush forest areas that will assuredly have rain almost constantly.
沙漠区域会很干旱，而茂密的森林地带则会持续不断地下雨。
The botanical tourist resources of Mount Helan nature reserve are composed of forest, shrub, steppe, desert, meadow, and some characteristic plants.
贺兰山自然保护区的植物旅游资源由森林、灌丛、草原、荒漠、高山草甸等植被类型和部分特色植物种群及物种组成。
The areas of parks, rivers, streams, desert, forest and trails will be off-limits to development, including oil and gas drilling.
涵盖公园、河流、小溪、沙漠、森林以及小道，法律将禁止对该区域进行如油气钻井的开发行为。
Vegetation transites from deciduous broadleaf trees to forest steppe, steppe and desert steppe.
植被为落叶阔叶林向森林草原、草原、荒漠草原植被型的过渡区。
When there are no more trees in a forest and the animals eat the grass and small plants, the forest will become a desert!
当森林里再也没有了树木，当动物们吃光了所有的草和植物，森林就将变成沙漠！
The result indicated that the land-use types of forest, Gobi desert and salina decreased from 1989 to 2004, whereas, types of farmland, water area and construction land increased.
结果表明，1989-2004年，且末绿洲减少的土地面积有林地、戈壁沙地和盐碱地，增加的土地面积有水域、建筑用地和耕地。
This is the second biome Settlers pack we've released - the first featured skins themed around the Forest, Tundra, and Desert biomes, and all the activities players get up to there.
这是我们制作的第二个生物群系定居者包，第一个的皮肤中有沙漠和森林等主题，而且所有玩家都使用了它们。
Another line is nearly in Great Wall zone, where the south is forest grass zone, the north is dry and desert prairie.
再以长城沿线为界，南部为森林草原区，北部为干草原、沙化草原区。
Now its up to you find the way through the Ice, Desert and Science Fiction World as well as through the Mysterious Forest.
现在一切都取决于你，你必须找到办法来穿过那些如同神秘森林般的雪地，沙漠和虚拟科技世界。
Now its up to you find the way through the Ice, Desert and Science Fiction World as well as through the Mysterious Forest.
现在一切都取决于你，你必须找到办法来穿过那些如同神秘森林般的雪地，沙漠和虚拟科技世界。
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