Research On Cultivated Land Protection Zoning Based On Multiple Time Series Fragmentation And Utilization

Cultivated land is the material basis for food production,from the perspective of farmers,it is necessary to find out the problems of farmland utilization and improve the motivation and willingness of farmers to use farmland,and to improve the efficiency of farmland utilization,which is also a necessary means to explore the potential of food production.Based on this,the study uses multi-year remote sensing data to obtain crop cultivation information,and based on the theory of landscape ecology and superposition analysis,the spatial and temporal changes in landscape fragmentation and cropland utilization status of crop cultivation types between 2001 and 2017 are studied to identify the patches of cropland utilization that have remained variable and unchanged over the years,and then the results of the multi-time series studies are superimposed and clustered for zoning,so as to divide The results of the multi-temporal study were then overlaid and clustered to divide the parcel-scale and township-scale cropland protection zones.The main research results and conclusions are as follows.(1)There are five major crop landscape types in the study area,including cabbage single species,summer corn single species,winter wheat single species,winter wheat-cabbage duplication,winter wheat-summer corn duplication,etc.The overall planting landscape fragmentation decreased to a certain extent during the study period,except for the winter wheat-summer corn type,which had a mean value of 0.4694,down from2001,but it showed a two-level trend,and there were still areas with high fragmentation degree,and the degree of concentrated and continuous cultivated land needed to be improved.(2)During the study period,the utilization status of cultivated land has improved,and the higher-utilized cultivated land has been concentrated in the southwestern part of the county,while the lower-utilized areas are still scattered and scattered.(3)Among the parcel-scale arable land protection zones,Level I zones have the smallest area and are mainly located in the southern part of the county;Level II zones involve all townships and are mainly around Level I zones;Level III zones have the largest area and are the most widely distributed,with Chao Luowo Township in the southern part of the county being the most concentrated;and Level IV zones are the most scattered.The core protection area is divided into five towns and villages in the south,the key excavation area is seven towns and villages on both sides of the county,the adjustment and governance area is the center of the county and five towns and villages in Chao Luowo Township,and the reserve control area is three towns in the northern mountains.The study concluded that the degree of fragmentation of farmland in the county has slightly decreased and the utilization of farmland has slightly improved,but there is still a need to improve the degree of concentration and utilization of farmland.It is recommended that the core protection zone should be strengthened,the key excavation area should be managed on a larger scale,the adjustment and management area should be planted with seasonal vegetable crops,and the reserve control area should focus on ecological protection and tourism development.Figure 26;Table 20;Reference 99...