Application of 3S Technology to Land Consolidation in Chernozem Region of China

The chernozem has high productivity, most of which is located in Northeast of China. Considering the restrictions of land use and terrain and meteorological conditions, soil erosion and degradation often result in lower agricultural output than expected. Land consolidation is served to consolidate parcels and to enlarge holdings as well as included provisions such as irrigation, drainage infrastructure, in order to improve land leveling and productivity potential. Therefore, the purpose of our research is to maintain the productivity of cultivated land and to enhance the conservation of water and soil by way of land consolidation, with two case studies in Hulun Buir in Inner Mongolia Region. Northeast of China. Our research integrated Geographic Information System (GIS), Remote Sensing (RS) and Global Position System (GPS), and also introduced an optimized method which could save earthwork and reduce soil erosion risks with a holistic perspective considering cultivated land, water, road and forests land. The results showed that by using the optimized method, comparing to total plane method, the earthwork decreases by 3/4 and 7/8; for slant method, the reduced earthwork is 1/2 and 1/3. Meanwhile, this optimized method can also significantly reduce risk of surface land removal in chernozem land This paper concluded that we should use 3S technology to find soil erosion area, and implement amending local topography method during cultivated land consolidation in chernozem area.