山东省总面积为15.3万平方公里,其中山丘区、平原风沙区约占总面积的49%。近年来,由于受历史和人为活动的影响,新的水土流失不断增加,直接危害工农业生产和人们的生活.一、人为造成水土流失的现状随着国民经济的迅速发展,开矿、采石、修路、建厂和其他生产建设日益增多.据1986年底调查统计,全省共有开矿、采石场地31043处,累计占地65.5万亩,年产尾矿、尾沙5177万吨,每年直接流入、倒入水库、河道的矿渣达2259万吨;新修铁路、环山公 Shandong Province has a total area of ​​153,000 square kilometers, of which 49% of the total area is covered by hills and plains. In recent years, due to the influence of historical and man-made activities, new soil and water loss is constantly increasing, which directly endangers the industrial and agricultural production and people’s lives. First, the status quo of man-made soil and water loss With the rapid development of the national economy, mining, quarrying, According to the survey and statistics at the end of 1986, there were 31,043 mining and quarry sites in the province with a total area of ​​655,000 mu and an annual output of tailings and tailings of 51.77 million tons, with a direct inflow each year , Into the reservoir, the river’s slag amounted to 22.59 million tons; newly built railway, ring Hill public