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内蒙古自治区总土地面积为118万平方公里。全区地貌以内蒙古高原为主体,从东北到西南,有大兴安岭山地、燕山山地、阴山山地及贺兰山等中山山地。这一弧形山脉构成我区地貌的脊梁,成为我区农业区与牧业区的天然分界。全区的山地丘陵面积约占总土地面积的70％,除林区及纯牧区外,以农为主、半农半牧以及矿区的面积约18.6万多平方公里,是我区主要的水土流失面积。这一范围涉及60个旗(县、市),有人口900万,耕地4500万亩,占全区总人口、总耕地的一半左右。 由于自然和历史的原因,这一地区干旱少雨,植被稀疏,土壤贫瘠,水土流失严重。农牧业生产水平低,人民的生活困难。据对31个山丘区面积比重较大的旗(县)1979～1987年的统计,人均产粮最高年为297公斤,最低年仅189公
Inner Mongolia Autonomous Region total land area of 1.18 million square kilometers. The whole area is dominated by the Inner Mongolia Plateau. From the northeast to the southwest, there are the Zhongshan Mountains such as Daxinganling Mountain, Yanshan Mountain, Yinshan Mountain and Helan Mountain. This arc-shaped mountain constitutes the backbone of the landscape of our region and has become the natural boundary between the agricultural and pastoral areas in our district. The hilly area in the region accounts for about 70% of the total land area. Except for the forest area and the pure pastoral area, the area dominated by agriculture, semi-farming, semi-grazing and mining areas covers an area of more than 186,000 square kilometers and is a major area for soil and water loss area. This range involves 60 flags (counties, cities), population 9 million, 45 million mu of arable land, accounting for the total population of the region, about half of the total arable land. Due to natural and historical reasons, the area is arid, sparsely populated, with poor soil and serious soil erosion. The production level of agriculture and animal husbandry is low, people’s life is difficult. According to the statistics of the counties (counties) with a large proportion in the area of 31 hills, the highest per capita grain yield was 297 kg in the year and the lowest was 189 only