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晋西黄土高原干旱地区,在大陆性季风作用下,雨量少而多变,且分布不均,年雨量由北而南变动于00～600毫米之间,其中春季占12%,夏季占65%,秋季占20%,冬季占3%。该区农作物完全仰赖于自然降水和广种薄收的旧种植习惯,产量低而不稳。由于土地利用不合理和陡坡开荒,加剧了水土流失,破坏了生态系统,导致自然灾害频繁,这是该地人民生活贫困的重要因素。 西山地区二十八个水土流失重点县有324.61万人,2575.36万亩耕地(包括临时耕地),人均8.7亩,(但
In dry areas of the western Shanxi Loess Plateau, under the action of the continental monsoon, the rainfall is small and changeable, and the distribution is uneven. The annual rainfall varies from north to south between 00 and 600 mm, with 12% in spring and 65% in summer. 20% in autumn and 3% in winter. The crops in the area are totally dependent on the natural precipitation and the extensive planting habits of old and new crops, with low and unstable yields. Irrational land use and steep slope reclamation have exacerbated water and soil erosion, destroyed ecosystems and led to frequent natural disasters, which is an important factor in the poverty of the people living in the area. Twenty-eight water and soil loss key counties in Xishan District have 3.2461 million people, 2575.36 million mu of cultivated land (including temporary cultivated land), with a per capita 8.7-acre