Land ecological security(LES)is an important part of China’s ecological civilization construction,which plays a vital role in ensuring the sustainable development of its society and economy.Based on the Driving force...Land ecological security(LES)is an important part of China’s ecological civilization construction,which plays a vital role in ensuring the sustainable development of its society and economy.Based on the Driving force-Pressure-State-Impact-Response(DPSIR)framework,this study quantified the spatiotemporal changes of LES in 28 counties of the southern Shaanxi Province from 2009 to 2018.The influencing factors of LES in Yangxian County were explored to clarify the mechanisms that rely on the land ecological advantages to develop organic agriculture and boost poverty alleviation.Results show that the LES of Yangxian always ranked in the top six in 28 counties of the southern Shaanxi region during 2009–2018.The LES in Yangxian increased from 0.385 in 2009 to 0.533 in 2018,and the LES level changed from relatively unsafe to safe.The indicators of rural per capita net income,grain output per unit area of arable land,and grazing intensity could explain 99.8%of the LES variance in Yangxian.Relying on ecological resources,Yangxian increased farmers’income and boosted alleviation of poverty through innovative land policies,developing organic agriculture,and rural tourism.These findings will provide theoretical support and model reference for balancing ecological protection and poverty alleviation in restricted development zones.展开更多
Zhenlai county in Jilin Province is taken as a typical area to explore the universal land use pattern under ecological security in ecotone between agriculture and animal husbandry in Northeastern China. Remote sensing...Zhenlai county in Jilin Province is taken as a typical area to explore the universal land use pattern under ecological security in ecotone between agriculture and animal husbandry in Northeastern China. Remote sensing data, relative thematic maps and corresponding social-economical statisitical and planning data were collected, and grey linear programming (GLP) model, together with the synthetic index estimating method was applied to develop an optimal land use model to evaluate the ecological security and analyze decision. The land use structure and optimal spatial allocation pattern of Zhenlai county in the year of 2010 regarded as a land use pattern under ecological security were simulated out by the mathematical models applied.展开更多
基金Strategic Priority Research Program of the Chinese Academy of Sciences,No.XDA23070301Key Program of the National Natural Science Foundation of China,No.41931293。
文摘Land ecological security(LES)is an important part of China’s ecological civilization construction,which plays a vital role in ensuring the sustainable development of its society and economy.Based on the Driving force-Pressure-State-Impact-Response(DPSIR)framework,this study quantified the spatiotemporal changes of LES in 28 counties of the southern Shaanxi Province from 2009 to 2018.The influencing factors of LES in Yangxian County were explored to clarify the mechanisms that rely on the land ecological advantages to develop organic agriculture and boost poverty alleviation.Results show that the LES of Yangxian always ranked in the top six in 28 counties of the southern Shaanxi region during 2009–2018.The LES in Yangxian increased from 0.385 in 2009 to 0.533 in 2018,and the LES level changed from relatively unsafe to safe.The indicators of rural per capita net income,grain output per unit area of arable land,and grazing intensity could explain 99.8%of the LES variance in Yangxian.Relying on ecological resources,Yangxian increased farmers’income and boosted alleviation of poverty through innovative land policies,developing organic agriculture,and rural tourism.These findings will provide theoretical support and model reference for balancing ecological protection and poverty alleviation in restricted development zones.
文摘Zhenlai county in Jilin Province is taken as a typical area to explore the universal land use pattern under ecological security in ecotone between agriculture and animal husbandry in Northeastern China. Remote sensing data, relative thematic maps and corresponding social-economical statisitical and planning data were collected, and grey linear programming (GLP) model, together with the synthetic index estimating method was applied to develop an optimal land use model to evaluate the ecological security and analyze decision. The land use structure and optimal spatial allocation pattern of Zhenlai county in the year of 2010 regarded as a land use pattern under ecological security were simulated out by the mathematical models applied.
