Researchon Regional Distribution And Potentiality For Well-facilitied Capital Farmland Based On Niche

The well-facilitied capital farmland construction is important initiative to strengthen cultivated land protection and ensure food security.Along with growing prominence of contradiction between land and population and cultivated land protection,it is imminent to research well-facilitied capital farmland construction.This paper evaluates the potential of the well-facilitied capital farmland construction aera,and on this basis,clearly the different areas of the well-facilitied capital farmland construction direction.Taking Xinzheng City in Henan Province as an example,The niche theory was employed to construct niche theory model,The niche values of each factor were determined and the niche values of each evaluation factor were calculated.The potential of the well-facilitied capital farmland construction areas were studied by constructing the evaluation index system of the well-facilitied capital farmland construction.On this basis,the factor combination model was used to analyze the limiting factors of the construction of the well-facilitied capital farmland in Xinzheng City,and divided the different construction areas.(1)This paper establish the evaluation index system of the well-facilitied capital farmland construction from the aspects of natural condition,infrastructure conditions and site condition,the niche model was constructed,the index was standardized by using the standard method of extreme standard,the threshold value method and the empirical method,The niche ideal value,calculate the niche potential value.The niche ideal value of each factor was determined,and calculating the niche potential value.(2)The weight of the evaluation index is determined by the combination weighting method combined with the analytic method and the entropy weight method.The niche values of each factor were calculated by using the niche model,and the regional potential value of the well-facilitied capital farmland was calculated by the comprehensive index method.The natural breakpoint method was used to divide the well-facilitied capital farmland construction area into basically possesses,further improvement,comprehensive regulation and unsuitable construction.The grade area was 22432.09 hm~2,19604.61 hm~2,310.08 hm~2 and 11820.85 hm~2 respectively,and the area proportion was 41.41%,36.19%,0.57%and 21.82%respectively.(3)Based on potential grading of the well-facilitiedcapital farmland,Based of farmland infrastructure and construction conditions,to analysis of Xinzheng City well-facilitied of prime farmland construction combination of factors limiting factor.The formation works were divided into mode I,irrigation and drainage works based mode II,field roads and farmland shelterbelts based mode III,the scale of the three mode of construction were 3923.49hm~2,33812.11hm~2、3442.86hm~2。...