Designating Of Permanent Prime Farmland And Fine Regulatory Measures Based On RS, GIS&GPS Technique

China is a traditional agricultural country. Agriculture is the foundation of ournational economy all the time. But China’s current total resources of arable land is only18.24million Mu,and the total arable land already press the red line of cultivated landprotection. The scarcity of land resources is China’s basic national conditions. However,China is a populous country. The amount of arable land resources related to China’snational strategy which means China’s national economy and the people’s livelihood.Protection of arable land is protection of our lifeline. In order to protect arable landmore effectively, the State proposed the strategy of building permanent prime farmland.Sichuan Province carry out the work of designation permanent prime farmland andbuilding the particular ledger in the year of2011. Longchang which is one of the sixprime farmland protection demonstration counties carried out this work in2011. Thispaper is based on the results of this work. The Longchang’s delineating permanentprime farmland and construction the particular ledger are based on the result of thesecond national land survey data. The range of prime farmland of the overall land usehad been subdivided into Map-Spot. Prime farmland Map-Spot had been mapped andstored in the database. The responsibility of prime farmland protection have beendecomposed into various farmers. Individual farmers signed the card.the particularledger of Permanent prime farmland has been constracted.etc.This paper’s main research contents and achievements as follows,(1)Author determined the Permanent prime farmland’s range based on the data ofThe Second National Land Use Survey database update2011and the Land use planningresults. Part of prime farmland had been transferred to general farmland, and part of the general farmland had been transferred to prime farmland.(2)The information of the prime farmland could be surveyed accurately andrapidly by the technology of "3S".(3)The database of prime farmland and the particular ledger had been constructedbased on the Geographic Information Systems.(4)Carrying out the responsibility of protection of prime farmland includingsigning the responsibility card, construction of boundary markers had been done.(5)The author evaluated the quality of prime farmland with the model of WeightedComprehensive Analysis based on the ArcGIS.In summary, designating Permanent prime farmland, construction the particularledger, carrying out the responsibility of protection prime farmland had been done. thiswork Laid the foundation for strengthening the protection of farmland. The completionof this work is the guidance to protect the prime farmland in Sichuan Province.