Land Potential Division And Farmland Water Conservancy Project Planning In Zhijiang Based On GIS

Land potential analysis is the potential of land development survey,measurement and evaluation.Through the analysis of potential,can understand the potential spatial distribution,in order to carry out land development activities,increase the effective utilization of land area,improve the quality of land,improve the ecological environment to provide a scientific basis for land resources,promote the sustainable development of social economy,even.Based on the analysis of the potential of land distribution in Zhijiang City heterogeneity in space,choose the appropriate method of grading,land consolidation potential in Zhijiang District,then according to the division of the results,combined with GIS technology in Zhijiang City,farmland water conservancy project planning,made with results:(1)Based on land suitability evaluation on agricultural land remediation in Zhijiang city to calculate the potential of new land,the additional land area reached 20073.98 hectares;the second is great potential for exploitation of new arable land throughout the county,the new arable land area of 1133.61 hectares;again for the new rural residential renovation Increase the land potential,the new arable land area of 771.81 hectares;the land consolidation potential of new arable land is the smallest land reclamation,land reclamation in the county of new arable land area of only 124.54 hectares.(2)Using AHP method and entropy method combined with a comprehensive evaluation on the regulation of Zhijiang city land evaluation results showed that land consolidation in Zhijiang city comprehensive evaluation index is an Fu Si Zhen and Bai Li Zhou Zhen,then ask an Zhen,fairy town and Qixing Town,land consolidation comprehensive evaluation index of small tung city town and family Zhen.(3)Considering the natural geographical conditions,Zhijiang city social and economic conditions and land use status,major problems of ecological environment in Zhijiang city is rocky desertification and soil erosion.According to the comprehensive evaluation result of land consolidation in Zhijiang City,to protect and improve the ecological environment as the criterion,Zhijiang city will be divided into 3 land potential District,and puts forward 3zoning land development patterns respectively in food security and economic growth as the center of the planning model,to protect and improve the ecological environment of soil The planning model,the rocky desertification control combined with land planning model of agricultural ecological landscape remodeling.(4)In Zhijiang city based on the division of land potential,Zhijiang city water balance calculation,analysis method of basic farmland project planning and design by using GIS space DEM project area,completed land leveling earthwork project area calculation,new or renovated drains and roads.The results show that the GIS technology in the calculation of the complicated terrain mountain terracing earthwork,find suitable ditches and roads construction location is not restricted by terrain,compared with the traditional method,greatly improves the efficiency and accuracy of operation.