Maintaining an adequate security level of cultivated land is essential for the healthy and sustainable survival of China’s large and growing population.We constructed a cultivated land security evaluation index syste...Maintaining an adequate security level of cultivated land is essential for the healthy and sustainable survival of China’s large and growing population.We constructed a cultivated land security evaluation index system,combined with an improved TOPSIS method by taking into account the balance and stability of quantitative,qualitative,and ecological security.We applied this improved method to an evaluation of the state of cultivated land security and analyzed its spatiotemporal variation in Yingtan City(Jiangxi Province,China)from 1995 to 2015.The drivers of the changes in cultivated land security were investigated via a spatial regression model,which can eliminate the effect of spatial autocorrelation.The results showed that cultivated land security decreased rapidly from 1995 to 2005,although it tended to rise slowly in the subsequent period from 2005 to 2015.Areas deemed to be in a highly dangerous state were mainly distributed in the Yuehu District,while those that were secure appeared primarily in the southern mountainous area,with the area in a generally dangerous state extending to the west in the same direction as urban development.Among the examined drivers,social-economic factors and policy factors significantly influenced the cultivated land security.Our work suggests that government managers should take appropriate measures to improve cultivated land security according to its spatiotemporal variations and the underpinning drivers in this region.展开更多
The exploration of ecological safety in tourism sites can provide a concrete path for sustainable tourism development in a region.Based on the“Driver-Pressure-State-Impact-Response”(DPSIR)model,we constructed an ind...The exploration of ecological safety in tourism sites can provide a concrete path for sustainable tourism development in a region.Based on the“Driver-Pressure-State-Impact-Response”(DPSIR)model,we constructed an index system for the evaluation of tourism ecological security(TES)in the Silk Road Economic Belt(SREB)from 2005 to 2020.This index system was used to explore the characteristics of spatial and temporal dynamic evolution with the help of entropy weight TOPSIS method,dynamic index of TES and Markov probability transfer matrix,and a standard deviational ellipse(SDE)model and GM(1,1)model were constructed for spatial pattern analysis and prediction.The results indicate four key aspects of this system.(1)In terms of spatiotemporal evolution,the tourism ecological safety index(TESI)of the SREB increased,the TES levels of the northwestern and southwestern provinces and cities differed significantly,and the quality conditions of TES in the southwestern provinces and cities were better than in the northwest.(2)In terms of dynamic evolutionary characteristics,the speed of change at each level of the SREB was slow,but the level of TES has improved.The TES level has not shifted by leaps and bounds,and the shifts in the level type show“path dependence”and“self-locking”effects.(3)In terms of spatial and temporal distribution patterns,the spatial pattern of TES in the SREB is a“northwest-southeast”movement trend,and the spatial distribution appeared as“aggregation”from 2005 to 2020.The prediction results show that the center of gravity of TES in the SREB will shift to the southeast from 2025 to 2035,and the spatial spillover effect will be reduced.(4)In terms of driving factors,the number of star-rated hotels,and the amounts of industrial wastewater emissions,tourism foreign exchange earnings,forest coverage,and other parameters are the key factors affecting TES,and the booming tourism industry requires the interconnection and interpenetration of various factors.The results of this study can provide a reference for tourism development and ecological environmental protection in the Silk Road Economic Belt.展开更多
基金The Research Project of Humanities and Social Sciences in Colleges and Universities of Jiangxi Province(JC19221)The National Natural Science Foundation of China(41361049)The Ganpo“555”Talent Research Funds of Jiangxi Province China(201295)。
文摘Maintaining an adequate security level of cultivated land is essential for the healthy and sustainable survival of China’s large and growing population.We constructed a cultivated land security evaluation index system,combined with an improved TOPSIS method by taking into account the balance and stability of quantitative,qualitative,and ecological security.We applied this improved method to an evaluation of the state of cultivated land security and analyzed its spatiotemporal variation in Yingtan City(Jiangxi Province,China)from 1995 to 2015.The drivers of the changes in cultivated land security were investigated via a spatial regression model,which can eliminate the effect of spatial autocorrelation.The results showed that cultivated land security decreased rapidly from 1995 to 2005,although it tended to rise slowly in the subsequent period from 2005 to 2015.Areas deemed to be in a highly dangerous state were mainly distributed in the Yuehu District,while those that were secure appeared primarily in the southern mountainous area,with the area in a generally dangerous state extending to the west in the same direction as urban development.Among the examined drivers,social-economic factors and policy factors significantly influenced the cultivated land security.Our work suggests that government managers should take appropriate measures to improve cultivated land security according to its spatiotemporal variations and the underpinning drivers in this region.
基金The Scientific Research Fund Project of Yunnan Education Department(2021J0592)The Yunnan University of Finance and EconomicsProgramme(2022D13)The Graduate Student Innovation Fund Project of Yunnan University of Finance and Economics(2022YUFEYC10).
文摘The exploration of ecological safety in tourism sites can provide a concrete path for sustainable tourism development in a region.Based on the“Driver-Pressure-State-Impact-Response”(DPSIR)model,we constructed an index system for the evaluation of tourism ecological security(TES)in the Silk Road Economic Belt(SREB)from 2005 to 2020.This index system was used to explore the characteristics of spatial and temporal dynamic evolution with the help of entropy weight TOPSIS method,dynamic index of TES and Markov probability transfer matrix,and a standard deviational ellipse(SDE)model and GM(1,1)model were constructed for spatial pattern analysis and prediction.The results indicate four key aspects of this system.(1)In terms of spatiotemporal evolution,the tourism ecological safety index(TESI)of the SREB increased,the TES levels of the northwestern and southwestern provinces and cities differed significantly,and the quality conditions of TES in the southwestern provinces and cities were better than in the northwest.(2)In terms of dynamic evolutionary characteristics,the speed of change at each level of the SREB was slow,but the level of TES has improved.The TES level has not shifted by leaps and bounds,and the shifts in the level type show“path dependence”and“self-locking”effects.(3)In terms of spatial and temporal distribution patterns,the spatial pattern of TES in the SREB is a“northwest-southeast”movement trend,and the spatial distribution appeared as“aggregation”from 2005 to 2020.The prediction results show that the center of gravity of TES in the SREB will shift to the southeast from 2025 to 2035,and the spatial spillover effect will be reduced.(4)In terms of driving factors,the number of star-rated hotels,and the amounts of industrial wastewater emissions,tourism foreign exchange earnings,forest coverage,and other parameters are the key factors affecting TES,and the booming tourism industry requires the interconnection and interpenetration of various factors.The results of this study can provide a reference for tourism development and ecological environmental protection in the Silk Road Economic Belt.
