Study On The Indicators And Methods Of Establishing The Permanent Basic Farmland

Farmland is the basis for agricultural production.Farmland is the protection of national and regional food security,social stability and long-term development of the economy’s lifeline.Serious shortage of reserve resources of cultivated land in Dalian City,lower quality,with Dalian’s economic and social development and the rapid urbanization and industrialization,and partial occupation of cultivated land resources,the protection of basic farmland situation is becoming increasingly severe.Dichromate treatment zones as State-level zone,favorable natural conditions,large number of cultivated land,a permanent delimitation of basic farmland in the area,to strictly implement orders,Dalian City’s ownership of arable land and basic farmland protection mandate,total number of basic farmland guarantee,the twin goals of improving the quality,is of great theoretical and practical significance.Based on man-land relationship and location theory as the theoretical basis of the theory,to GIS terrain analysis,buffer and overlay analysis for technical support,follow the principle of national permanent delimitation of basic farmland,natural and human geography features according to the Dichromate treatment area,establishing a permanent delimitation of basic farmland index system,index quantified and polymerization method to determine Jin Pu new area new permanent quantity,quality and distribution of basic farmland.First,the use of new technology and methods getting Jin Pu new area vector topographic map,coastline,farmland distribution vector,town streets vectors,the administrative division focuses on the development of the regional distribution of vector and key ecological function area distribution vector.According to the national technical specifications for the delineation of basic farmland and the land use overall planning of Dalian,subnational regions for reference methods,establish suitable index system of Jin Pu new area,and indexes and aggregations.Second,using GIS of terrain analysis,and buffer analysis and the overlay analysis technology,on Dalian Jin Pu new area arable land distribution vector status figure and Jin Pu new area coastline distribution figure for overlay,analysis out Dichromate treatment district coastal arable land of distribution figure;will meet out conditions of arable land figure and Jin Pu new area Township Street administrative divisions figure for overlay,analysis out Dichromate treatment district the Township Street District out arable land schematic;put all out arable land figure and Jin Pu new area vector topographic maps for overlay,Analysis of Jin Pu new area needed to bring up the whole land,finally won the Golden general sketch of every town streets in new permanent spatial distribution of basic farmland.Finally,Jin Pu new area brings up results of cultivated land and a permanent delimitation of basic farmland,Dichromate treatment area do not meet a set of indicator system of cultivated land 8233,area of 10841.61 hectares,mainly located south of dichromate treatment area.Will meet to determine index system of land designated a permanent basic farmland,permanent block of basic farmland 24500,57937 hectares,located mainly in the Dichromate treatment area of North,Northeast and central regions.Permanent basic farmland and present situation farmland as defined by contrast,found the use of a set of index system of permanent basic farmland as defined by,the number of protection and quality improvement.