LAND USE CONTROL FOR PROMOTING SOIL AND WATER CONSERVATION ANG SUSTAINABLE USE OF LAND IN THE NORTHEAST MOUNTAIN REGION OF YUNNAN PROVINCE

Many irrational land use types was the basic cause of leading to the seriousness of soil and water loss in the northeast mountain region of Yunnan province.Soil and water loss has become the main factor of influencing and restricting the sustainable use of land in this region. The kernel of land use control is in starkly control of the transformation of land use in accordance with land use planning,so that the rational use of land is guided,and the sustainable use of land can be realized.The establishment of this system provides a powerful guarantee and measures for turning the irrational land use types and promoting the soil and water conservation and the sustainable use of land in the broad mountain regions of our country. According to the principles of the resemblance of land use types and the identity of main land use and its control measures,the divisional scheme of land use areas in the northeast mountain region of Yunnan province has been mapped out:first of all,it is divided into three first class land use areas,i.e.agricultural land area,constructional use area and unused land area.Secondly,agricultural land area is divided into six second class land use areas,i.e.cultivated land area,garden area,forestry area,pastureland area,water bobies area,and natural reserve;constructional use area is divided into three second class land use areas, i.e.resident site and industrial and mining land area,communication land area,and water conservancy project land area.In addition,cultivated land area is divided into two third class land use areas,i.e. fundamental farmland conservation area and ordinary farmland area;resident site and industrial and mining land area is divided into four third class land use areas,i.e. urban and town land area,village and market town land area,independent industrial and mining land area,and special land use area. On the basis of above mentioned division,according to the relevant laws and policies in our country,the rules of land use control of every area has been instituted.The study provides the essential basis for carrying out the system of land use control in the northeast mountain region of Yunnan province.