Cultivatedl And Quality Evaluation And Spatial Characteristic Analysis In Renshou County,Sichuan Province

To construct the evaluation index system of cultivated land quality in Renshou County,Sichuan Province,and to quantitatively evaluate the distribution and spatial aggregation characteristics of cultivated land quality from the perspective of comprehensive evaluation of cultivated land quality.Superposition each index and plot shall degree correction,get the Fig of the form of suitability evaluation,with the help of space conversion method to village administrative region as a quality index space evaluation unit,with space autocorrelation method analysis of spatial correlation and agglomeration characteristics,and according to the division of cultivated land reserves.The evaluation system of "suitability evaluation(map spot form)--spatial evaluation of cultivated land quality index(form of village-level administrative unit)--space autocorrelation division protection area" was established.Generally sui Tab and above grades account for about two thirds of the county area;the quality index of village administrative units is high,the central and southwest,and the northeast and northwest have strong spatial clustering,the high-high type is distributed through clusters,and the low-low type is mainly distributed in sheets and strips,with low-high and high-low type.The overall level of cultivated land quality in Renshou County is high,which is highly sui Tab for agricultural development,but there are unreasonable layout of cultivated land.The sui Tab areas are mostly distributed in the middle,south and southwest of Renshou County,and the unsui Tab areas are mostly distributed in the north.According to the combination characteristics of LISA multi-dimensional agglomeration types,this study divided the cultivated land protection area in Renshou County,which was specifically divided into four protection areas: core protection area,quality improvement area,comprehensive improvement area and structural adjustment area.