1·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。
2·The study showed an initial advance in the timing of the growing season or its 'phenology' for both the meadow and steppe for the first 15 years.
这项研究表明,在最初的15年里,牧场和草原植物的生长期,或者说“物候现象”,最初在时间上都有增长。
3·Its 681 pages of text are at times as grueling as a forced march across the Mongolian steppe.
它那681页的文本读起来就像在蒙古草原上急行军一样让人累得慌。
4·It is situated in the center of Asia and it has some climatic zones: from forest-tundra to steppe.
他位于亚洲的中部,它也有很多种的气候区域:西伯利亚大草原的森林苔原。
5·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。