过往沙漠的南部边界比现在的边界更靠北，而半干旱的草原和较浅的淡水湖泊覆盖了现在干旱平原的大部分地区。
The southern frontier of the desert was far to the north of where it is now, while semiarid grassland and shallow freshwater lakes covered much of what are now arid plains.
在19世纪80年代，美国中部的高地平原大草原是由农民和牧场主开垦的。
The vast grasslands of the High Plains in the central United States were settled by farmers and ranchers in the 1880s.
农田在许多方面的改善与灌溉相关，但是北美洲和印度西部大草原和平原地区的一些雨育农田及牧场也得到改善。
Many gains in cropland are associated with irrigation, but there are also swaths of improvement in rain-fed cropland and pastures in the prairies and plains of North America and western India.
然而，在人口稀少的西部大部分地区，在飞往草原、平原、沙漠中边远小城镇的长途航线上，通勤航空公司也取代了大的航空公司。
In much of the underpopulated west, however, they replace the major airlines on quite long routes to the small urban outposts on prairies, plains and deserts.
该国的主要地形是沙漠平原和沙丘，还有环绕尼日尔河的一个大草原。
Currently most of its terrain is made up of desert plains and sand dunes with some savanna around the Niger river.
城市森林覆盖率这些地区之间的差别很大，在温带草原或德州，路易斯安那州沿海平原低于5%，而在其他通常超过10%。
Urban forest coverage varies greatly among these regions, with normally over 10% in temperate prairies or texas-louisiana coastal plain and less than 5% in others.
沿着休斯顿水牛河的植物园位于墨西哥湾沿海平原生态区范围内，支持着抵靠着峡谷的广袤平坦的大草原，峡谷里树木繁茂并且充满了沼泽和洼地。
Located along Buffalo bayou in Houston, the Arboretum lies within the Gulf Coastal Plains ecoregion, supporting vast flat prairies that abut wooded ravines associated with bayous and depressions.
草原袋鼠主要分布在北美的大平原上。
Prairie dogs chiefly live in the great plains of North America.
哈尔滨的松花江流域属于松辽平原的草甸草原草场范畴。
Songhua river basin of Harbin is belong to meadow steppe in Songliao Plain.
旧石器时代末期，太湖平原气候凉干，为森林、草原环境。
In the Mesolithic, for the climate was cool and dry, the Taihu plain was covered with forests and grasslands with scarce lakes and swamps.
探讨了松嫩平原草原植物群落演替与土壤化学性质和土壤肥力的关系。
The relationship between different plant communities and soil characteristics were studied in the Songnen grassland.
大平原上的大片草原由于过分放牧而逐渐荒芜。
Vast regions of grasslands on the Great Plains were depleted by overgrazing.
在短暂的人类历史时期，土默特平原经历了由草原生态环境到农田生态环境的变迁过程。
Throughout short human history, Tumote Plain experienced the process from grass ecological environment into farmland ecological environment.
矮橡树丛生的高原升起在对岸，一直向西去的大平原和鞑靼式的草原伸展开去，给所有的流浪人家一个广阔的天地。
The low shrub oak plateau to which the opposite shore arose stretched away toward the prairies of the West and the steppes of Tartary, affording ample room for all the roving families of men.
黑暗的波兰的平原，以及黑暗的英格兰的草原。
北部：松辽平原、内蒙古大草原。
北部：松辽平原、内蒙古大草原。
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