A Study On Cultivated Land Planning Based On CA Simulation System

ABSTACT : In recent years,with the development of economy,the increase of population,the urban construction,agricultural structure adjustment,ecological deterioration and disaster destroyed arable land,Which led to the quantity of cultivated land is declining quality and cultivated land is declining and the worsening cultivated land ecological environment,Therefore,cultivated land problem has become caused extensive attention from the government and the different sectors of the society.To strengthen the management of land use planning and strict the land use controlled,The Ministry of Land and Resources deployed the general adjust and perfect the work of integrated land-use planning,Which work is focused on under the "rules",promoting the assignment for "three line",Which priority to define the permanent protect red line for the basic farmland and ecological,Reasonable standards for the city of development boundary.Among them in order to achieve the premise for permanent basic farm protection and determine red line are the he quantity of cultivated land protection and the rationality of the spatial distribution.Therefore,how to according to the variable quantity of cultivated land,scientific to forecast quantity of cultivated land protection and implementation for the stability as well as rationality of spatial distribution of cultivated land,Which to protect the cultivated land,delimit the quality of basic farmland and improve the ecological environment have more important practical significance.The paper take Henan province Lankao city as an example,Which based on the theory of cultivated land resource scarcity and quality,Analysis of relevant research results at home and abroad,after forecast and demonstrate the scientificity for the least cultivated areas in general land use planning,Starting from the influence factors of cultivated land change,exploit land suitability for CA simulation system of suiting to the cultivated land evolution regular,Simulate the change of the cultivatedland in 2020.Land suitability CA simulation system are not require to the rules of the neighborhood and full consideration to the cultivated land change,While competitive advantage is an important cellular evolution rules characteristics,From three aspects about the cultivated land suitability,restrictive and competitive to simulate the cultivated land change in 2020 and delimit the basic farmland.During cultivated land suitability evaluation,selected the main impact the cultivated land 7 natural property indexes.For instance,soil texture,soil organic matter,available soil layer thickness,distance from the road,the distance from the village,irrigation conditions,land use type;Restrictive indexes considered the slope,river and ecological land as well as scenic spots;Competitive advantage adopt constructive expansion permitted zone in general land use planning as the competitive advantage of transform the cultivated land.Followed the principle in land development,sorting,reclamation,Priority reclamation of agricultural land;Finally,With cultivated land suitability in the current general land use planning contrast found that land suitability of CA simulation system cultivated land suitability of Lankao is better in 2020.Reach the following conclusion:(1)From the perspective of food security,Based on the study population growth trend,considering the influence of factors such as natural disasters,multiple crop index and self-sufficiency rate,on the basis of demand for 407 kg of grain per capita,To predict the total demand for 307400 tons of grain in Lankao by 2020 and cultivated land demand is 75784.76 hm2.(2)Compared the forecast the demand of cultivated land and the 76411.32 hm2 of the least cultivated areas in the general land use planning,In order to avoid natural disaster and unstable factors on the impact of food production,following the principle of maximum,Determined the number of cultivated land protection is 76411.32 hm2 for Lankao in 2020,As the indicators about cultivated land scale control of Lankao in2020.(3)By setting the restrictive and competitive parameters about the land suitability CA cellular automata model,Simulating the cultivated land total scale has76412 cellular for lankao in 2020,Which can achieve the targets.(4)Through the statistical analysis and superposition of land use map in 2009,there is 3616.29 hm2 cultivated land transformed into other lands,and 8000.86 hm2 other lands transformed into cultivated land,mainly by the village,places such as inland shoals and orchards.(5)Through the analysis of ARCGIS,Using land suitability of cellular automat simulation of distribution of cultivated land,land suitability score higher than the current planning of cultivated land,cultivated land natural basic condition is relatively higher than that of the present status of cultivated land in the planning,and the result is more uniform.This paper applied to land suitability in the CA model to carry on the general land use planning of cultivated land simulation,which can get the superior results.