Quality of New Farmland in Karst Hilly Area:A case study of Dingqi town of Zhenning county in Guizhou province

The factors affecting nature and social economy of new farmland in Karst hilly area were evaluated by analyzing main data from real farmland status and planning scheme of project implementation based on land scale to know the quality of newly increased farmland in Karst hilly area based on GIS technology and to provide the scientific base for quality protection and sustainable development of farmland in Dingqi town.The results show that the farmland quality in the project area is not good as a whole,the first farmland acreage is 10.5hm2,accounting for 8.21% of new farmland area,the first and second farmland only distributes in the central part of the project area because the central part is of good natural environment condition,flat relief,good soil texture,high organic matter content,lower bare rock rate and close to roads and the impounding reservoir,and the third and fourth farmland mainly distributes in the parts with steep slope,high bare rock rate,200m away from roads and the impounding reservoir.