Temporal zoning of high-standard farmland construction in hilly areas based on Moran index——taking Fengyang County as an example
Promoting the construction of high-standard farmland is an important measure to improve the quality of cultivated land in hilly areas in the middle and lower reaches of the Yangtze River.In order to reasonably define the con-struction time sequence of high-standard farmland,Fengyang County was taken as an example,and based on Moran index,combined with the spatial distribution of cultivated land quality and irrigation and drainage capacity,the construction time sequence of high-standard farmland with plot as the smallest unit was divided.The results showed that the cultivated land quality grade in Fengyang County was medium,with an average grade of 4.367.The cultivated land quality level in the county showed significant positive spatial correlation,and 73.45%of cultivated land showed significant spatial autocorrela-tion.The improvement degree of irrigation and drainage capacity could be divided into 1-9 levels.According to the spatial correlation of cultivated land quality grade and the improvement degree of irrigation and drainage capacity,the construction time sequence of high-standard farmland was divided into priority construction area,secondary construction area,reserve construction area and temporary no construction ar-ea.The priority construction area was the area with high-low(HL)type spatial correlation and the irrigation and drainage capacity could be improved greatly.The case of high standard farmland construction in the study area was verified in this study.The regions with a large improvement in the quality of cultivated land were all in the priority and secondary construction areas.The results of this study have certain ref-erence and application value in the site selection of high standard farmland,and can provide reference for orderly and effi-cient promotion of the construction of high-standard farmland and improvement of cultivated land quality.
high-standard farmlandMoran indexconstruction sequenceirrigation and drainage capacity
万方数据
维普
