Research on the Distribution Characteristics of Cultivated Land Quality Grades in A County,Liaoning

Abstract

Cultivated land quality has an important impact on the production capacity of cultivated land and the level of regional development, and is also directly related to national food security. The area-weighted method was used to study the quantity of different cultivated land quality classes in A county, and the spatial autocorrelation analysis was used to study the spatial agglomeration characteristics and differences of cultivated land quality in A county. The results showed that: (1) The natural quality of cultivated land in A county was mainly concentrated in 10-12 grade, while the utilization and economic grades of cultivated land quality were mainly in 11-13 grade, and the utilization and economic qualities of cultivated land were lower than the natural quality. The overall quality of cultivated land in A county was at a medium level. (2) The Moran's I index of natural, utilized and economic quality of cultivated land in A County is greater than 0. 4, showing a strong positive spatial autocorrelation in spatial distribution; In the LISA analysis, the spatial aggregation features of natural, utilized and economic quality of cultivated land turned out to be positive correlated HH type and LL type, and the insignificant NN type distribution was more obvious. (3) Based on the spatial pattern presented by the spatial autocorrelation results, corresponding measures were proposed to provide more scientific references for decision-making and technical support for the implementation of cultivated land fine management in A county.