Dynamic Evaluation and Comparison of Land Ecological Security in the Two Regions of the Yellow River Basin
[Objective]This study intends to comprehensively explore the land ecological security situation of the Shandong Peninsula and Jiziwan of the Yellow River,provide a realistic basis for realizing the ecological protection and high-quality development of the Yellow River Basin and promoting the strategy of"jointly grasping the great protection and jointly promoting the great governance".[Methods]The entropy method,kernel density estimation,Markov chain and obstacle factor model,and other methods were applied.[Results](1)In terms of level change,the growth rate of land ecological security in the two regions was"inverted U"type.The level of land ecological security in Shandong Peninsula was obviously higher than that Jiziwan of the Yellow River,but the growth rate of Jiziwan of the Yellow River was faster.(2)In terms of time,the land ecological security of the two regions had the characteristics of"single core"evolution.The regional differences in Shandong Peninsula were expanding,while the regional differences in Jiziwan were narrowing.In space,the two regions showed a spatial distribution trend of"high in the middle east and low in the west".(3)On the evolution characteristics,the evolution of land ecological security level in the two regionshad the effects of"path dependence"and"self-locking".(4)The ecological security of land in Shandong Peninsula was affected by the per capita cultivated land area and the average application amount of chemical fertilizers and pesticides.The ecological security of land in Jiziwan of the Yellow River was affected by landscape fragmentation and forest coverage.[Conclusion]In the future,Shandong Peninsula and Jiziwan of the Yellow River should not only classify and implement policies according to regional advantages,but also proceed from the overall situation of the basin to jointly improve the land ecological security level of the Yellow River Basin.
high-quality developmentland ecological securitytemporal and spatial characteristicsfactor obstaclecollaborative governance
万方数据
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