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Spatio-temporal characteristics of cultivated land fragmentation in different landform areas with a case study in Northeast China

查看全文 作　　者：Fengkui [1,2]Qian;Yanru [1,2]Chi;Rattan [3]Lal;Klaus [3]Lorenz 高影响力作者 机构地区：[1]College of Land and Environment,Shenyang Agriculture University,Shenyang,PR China;[2]National Engineering Laboratory for Efficient Utilization of Soil and Fertilizer Resources,Shenyang,PR China;[3]Carbon Management and Sequestration Center,School of Environment and Natural Resources,The Ohio State University,Columbus,OH,USA高影响力机构 出　　处：《Ecosystem Health and Sustainability》索引2020年第6卷第1期,共12页高影响力期刊 基　　金：This research was financially supported by the National Natural Science Foundation of China(Grant No.41671329);China Scholarship Council(Grant No.201808210445). 摘　　要：Assessing the temporal and spatial characteristics of cultivated land fragmentation is necessary to identify management practices that can reduce negative environmental effects.Thus,the purpose of this study was to use principal component analysis and spatial autocorrelation to analyze the dynamic characteristics of cultivated land fragmentation in different landform areas in Liaoning Province,China,in terms of time and space.An additional objective was to match the changes with the natural and social environment to support the sustainable development of fragmented cultivated land.The results indicated that the evolutionary trends of cultivated land fragmentation in the central plain area showed a weakening trend,contrary to those observed in the western hilly and eastern mountainous areas.Moreover,the spatial distribution characteristics of cultivated land fragmentation in the western hilly area were generally“external low,internal high,”primarily because of the edge density of cultivated land patches.The spatial distribution characteristics of cultivated land fragmentation in the central plain area were generally“external high,internal low,”primarily because of the number and division of cultivated land patches.The spatial distribution characteristics of cultivated land fragmentation in the eastern mountainous area were generally“south low,north high”because of the division of cultivated land patches.These results can provide guidelines for planners,managers,decision-makers and others to formulate regulatory policies,identify land remediation areas,and promote the sustainable development of cultivated land. 关 键 词：Cultivated land FRAGMENTATION spatiotemporal characteristics different landforms Northeast China
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