| Man-Land syste system is a complex open giant system with the interaction of human activities and geographical environment.Since the industrial revolution,the scale of human activities has been expanding;especially since the middle of the twentieth Century,the rapid advance of industrialization and urbanization has seriously damaged the geographical environment.In turn,the impact of geographical environment on human beings has gradually increased.People realize the importance of the relationship between man and land to regional sustainable development gradually.The study on the sustainable development of man land system relies on a certain area,focus on promoting regional sustainable development.It covers the key disciplines of economics and geography,such as "factor + mechanism,function + system,process + pattern,scale + interface".Therefore,the research on sustainable development of man land system can provide theoretical support for solving the problems of resource shortage and ecological environment deterioration in the development of human society.The Yellow River delta is a very young estuarine delta,which has the most extensive,complete and youngest wetland in China.The State Council passed the "development plan of the Yellow River delta efficient ecological economic zone" in 2009,marking the development of the Yellow River delta rising to national strategy,then The Yellow River Delta region started the road of ecological development.However,as the last one to be developed in China,the effect of its development is directly related to the future development of the whole region,at the same time,it has a typical significance for other regions.In this paper,literature review,field research,integrated analysis,geographic mathematical model and ArcGIS based space-time composite analysis are used.Based on the analysis of literature review and relevant theories and concepts,the study constructs the general framework of supply and demand factors from the perspective of ecological fragile on the sustainable development of man land system,analyzing the vulnerability,sustainability,spatial equilibrium pattern,and the optimal control measures and institutional guarantee of the The Yellow River Delta Efficient Ecological Economic Zone.Conclusions are as follows:(1)Constructing the general framework of the sustainable development of human land system from the perspective of supply and demand factors.Study about the sustainable development of man land system from the perspective of supply and demand factors belongs to the category of the sustainable development of man land system.Therefore,we completed the basic theoretical framework of the sustainable development of man land system first.It includes three aspects: the relationship between the regional sustainable development and man land system,the connotation of the sustainable development of man land system,and the methodology of the sustainable development of man land system.Then,we use it to guide the sustainable development of human system from the perspective of supply and demand factors.(2)The characteristics of the human land system in The Yellow River Delta Efficient Ecological Economic Zone are analyzed.Based on the basic situation of the efficient ecological economic zone of Yellow River Delta from several ranges,natural resources,development and other aspects of analysis,we analyzed the characteristics of man land system from three aspects of economy subsystem and society subsystem and environment subsystem.We analyzed the basic situation of the efficient ecological economic zone of the yellow triangle from regional scope,natural resources and development condition,then analyzed the characteristics of the system from three aspects: economy,society and ecological environment.(3)Evaluating the sustainability of The Yellow River Delta Efficient Ecological Economic Zone from the perspective of supply and demand factors.First,we analyzed the driving mechanism of different supply and demand factors to the evolution of man land system through the elements of supply and demand--economic activity--the evolution of man land system.Then we analyzed the leading supply and demand factors in the agricultural economy,industrial economy and efficient ecological economy,and the contradiction between the efficiency and sustainability in view of supply and demand factors at this stage.The HSDI was used to evaluating the sustainable of The Yellow River Delta Efficient Ecological Economic Zone from 2001 to 2015.The results showed that the sustainability of The Yellow River Delta Efficient Ecological Economic Zone increased gradually,but it mainly depended on the economic subsystem.Constructing the evaluation index system of the evolution trend of the relationship between people and land,the study found that the supply capacity and demand intensity of The Yellow River Delta Efficient Ecological Economic Zone both showed an increasing trend during 2001-2015,but the intensity demand is growing faster than the supply capacity.The coupling degree of supply factor system and demand factor system has been at a high level During the period of 2002-2015,but the coordination degree has been lower than the good coordination level.On the whole,the coordination degree between supply and demand of The Yellow River Delta Efficient Ecological Economic Zone has been improved,but the speed is slow,which is more consistent with the evaluation results of sustainable development index.(4)The spatial equilibrium pattern of The Yellow River Delta Efficient Ecological Economic Zone was studied from the perspective of supply and demand factors.The paper defined the spatial equilibrium of man land system from the perspective of supply and demand factors first.The power source of regional development can be summarized as promoting the supply and demand pull system,spatial equilibrium or imbalance is mainly reflected by the relationship between supply and demand of regional strength,when the supply capacity and demand strength when the pattern of regional development in general is balanced,on the contrary there is spatial imbalance.Constructing index system,the supply capacity of the efficient ecological economic zone of The Yellow River Delta Efficient Ecological Economic Zond was evaluated,and divided into high,moderate and low three grades,and the combination of different types of spatial equilibrium.Overall,The Yellow River Delta Efficient Ecological Economic Zond spatial balanced level is not high and the level of differences between different regions is large.There were 12 counties belong to the type of equilibrium,but only 4 counties at a high level.The future of regional coordinated development of the situation is not optimistic.Optimized Development Zone mainly located in the eastern,limited development zone mainly located in the western region.The development level of the eastern area was at a higher level,the future should focus on improving the quality and structure,and the western region in the development state of low level.In the evaluation of spatial equilibrium in the eastern area is the high level equilibrium zone,development zone over medium level equilibrium region and supply high demand led,while the west is at a low level,low supply-demand caused by excessive development zone and insufficient development area.Therefore,the evaluation of Yellow River Delta high efficiency ecological economic zone spatial equilibrium type results and main function zoning results are consistent,namely the eastern region better than the western region.+(5)The optimal regulation mechanism of sustainable development in The Yellow River Delta Efficient Ecological Economic Zone is constructed from the perspective of supply and demand co-ordination.The goal of sustainable development about The Yellow River Delta Efficient Ecological Economic Zone is the harmonious relationship between man and land,which through intensive,efficient and ecological development,the supply and demand system dynamically balanced,and the three subsystems of economy,society and ecological environment coordinated in the future.Environmental vulnerability,structural problems and lack of consumption demand constraints this goal.Therefore The Yellow River Delta Efficient Ecological Economic Zone should establish a new power structure gradually,which performance as " Scientific and technological innovation,the coordinated development of the two and three industries,consumption growth,institutional dividend release" by optimization the supply and demand factor.In the content arrangement,this paper is divided into 8 parts:(1)Part One: Introduction.It elaborates the research background,research significance,research technical route and research methods,and the innovation of the paper.(2)Part Two: Literature review and related theories and concepts are analyzed.The advantages and disadvantages of existing research are summarized,and the trend of sustainable development of man land system is prospected,and the basic theory and basic concepts were analyzed.(3)Part Three: Structure a general framework for the sustainable development of man land system from the perspective of supply and demand factors.The theoretical framework of the sustainable development of man land system is analyzed,and the basis and results of the classification of typical human system types are analyzed,and expounded the sustainable development and optimal regulation of the typical man land system from the perspective of supply and demand.(4)Part Four: Analysis on the characteristics of ecological fragile human land system in The Yellow River Delta Efficient Ecological Economic Zone.This paper discussed the basis of the identification of the ecological fragile human land system,analyzes the basic situation of the efficient ecological economic zone of the yellow triangle,and analyzes the basic characteristics of the ecological fragile human land system in The Yellow River Delta Efficient Ecological Economic Zone.(5)Part Five: Sustainability evaluation of The Yellow River Delta Efficient Ecological Economic Zone f rom the perspective of supply and demand factors.The mechanism of supply and demand factors driving the evolution of human land system was analyzed,the main factors of supply and demand in different development stages of The Yellow River Delta Efficient Ecological Economic Zone were analyzed from the perspective of supply and demand factors,and HSDI and comprehensive index system were used to evaluate the sustainability of the system.(6)Part Six: Study about the spatial equilibrium of The Yellow River Delta Efficient Ecological Economic Zone from the perspective of supply and demand.Defined the connotation of spatial equilibrium from supply and demand.And the evaluation model of the spatial equilibrium state of the human land system was constructed to analyzes the spatial pattern of supply,demand and the equilibrium pattern of The Yellow River Delta Efficient Ecological Economic Zone from the perspective of supply and demand.(7)Part Seven: Construction optimization measures of sustainable development of The Yellow River Delta Efficient Ecological Economic Zone from the perspective of supply and demand coordination.The new development drive was selected and ecological model was established on the basis of sustainable development goals and development constraints.(8)Part Eight: Conclusion and prospect.Through the comprehensive review and logic generalization of this paper,the author refines and summarizes the basic conclusion,and studies on the trend in the future. |
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