Utilization potential of cultivated land in Manas River Basin, China.

The quality evaluation of cultivated land is the foundation of the agricultural land use planning. Taking Manasi River Basin as the research object, the experiment was carried out whose data was analyzed with the fuzzy mathematics method. The land-use potential evaluation model was constructed based on soil organic matter, available nitrogen, available phosphorus, available potassium, p H value, total salt content and the depth of groundwater in Manasi desert oasis area. The results indicated the study area was in lack of nitrogen and phosphorus and abundant with potassium. The distribution map of land-use potentiality was made and indicated four grades areas. The secondary and third utilization potential area accounted for 72.67% of the total area, the highest and lowest potential area covered the area of 27.32%. The model and evaluation method can provide theoretical basis for land use and development.