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吉林省位于我国东北地区中部,总土地面积187400平方公里,地势东南高、西北低,气候自东向西有湿润、半干燥的差异,因而植被和土壤的分布也具有明显的规律性。 多年来,由于各种因素的综合影响,在不少地方,造成生态条件失调,旱涝灾害和水蚀风蚀不断加剧。据调查和测验资料推算,全省每年表土流失总量约有一亿多吨,其中1200万
Jilin Province is located in the central part of Northeast China. The total land area is 187,400 square kilometers. The terrain southeast is high and the northwest is low. The climate has wet and semi-dry differences from east to west. Therefore, the distribution of vegetation and soil has obvious regularity. Over the years, due to the combined effects of various factors, ecological conditions have been disproportionately caused in many places and droughts and floods and water erosion and wind erosion have been aggravating. According to the survey and test data projections, the total annual topsoil loss in the province is about 100 million tons, of which 12 million