Study on the Relationship Between Cultivated Land Quality and Landscape Pattern Index——Taking Yingtan City of Jiangxi Province as An Example
Studying the relationship between cultivated land quality and landscape patterns can provide a scientific basis for strengthening the protection and enhancement of national cultivated land quality.Using 2022 cultivated land quality data in Yingtan City,Jiangxi Province,the study comprehensively analyzed the overall cultivated land quality situation in Yingtan based on the cultivated land quality evaluation.Landscape pattern indices such as patch area,percent of landscape,edge density,patch density,landscape shape index,mean patch size,landscape division index,contagion index,and Shannon's diversity index were selected to calculate in Fragstats 4.2 software,and then cultivated land area weighted average national natural level index,cultivated land area weighted average national use level index and cultivated land area weighted average national economic level index were correlated with the selected cultivated landscape pattern indices,respectively.It was concluded that the cultivated land quality national natural level index was significantly and negatively correlated with the edge density of cultivated land,with a correlation coefficient of-0.393(P<0.01);the cultivated land quality national use level index was significantly and positively correlated with the mean patch size of cultivated land and the Shannon's diversity index,with correlation coefficients of 0.343(P<0.01)and 0.416(P<0.01),respectively;the cultivated land quality national economic level index was significantly and negatively correlated with the edge density of cultivated land,with a correlation coefficient of-0.381(P<0.01).Thus,there was a clear correlation between some of the landscape pattern indices and cultivated land quality,which could reflect to some extent the correlation between cultivated land quality and landscape pattern indices within the region.The results of the study can provide scientific references for the improvement and protection of cultivated land quality from the perspective of landscape pattern,and also have certain practical significance for the national level decision-making on the optimization of regional spatial layout of cultivated land.
cultivated land qualitylandscape pattern indexcorrelation analysisspatial heterogeneityYingtan City
万方数据
