The Effect Of Land Resources And Landuse Risk Prevention Mechanism In The Course Of Urbanization

Mainly research perspective of this doctoral dissertation is effects of land resource-s and prevention of land utilization risk in the process of rapid urbanization. Mainly dis-cusses the produce, assessment and the changing condition of city land resource effect i-n the background of rapid urbanization in China,. Further study on prevention risk ofland utilizatio in the process of urbanization, in order to achieve the goals of the opti-mal allocation of land resources. This dissertation starts from the relationship betweenurbanization and resources and environment. It form the concept and theory system ofurbanization land resource effect in the general theoretical framework of resource andenvironment,and structure the assessment of urbanization land resources effects. Fromthe risk perspective, using ecological risk assessmentprinciples to construct risk assessme-nt system, and then discuss the risk control mechanism of land use in the process of ur-banization. Finally, taking Liaoning coastal economic zone as a case study, empirical re-search on the assessment method of urbanization land resources effects and land use r-isk that proposed in this dissertation, in order to effectively test of the theory and met-hod.And putting forward three modes ofurbanization and theoptimal allocation of landresources By reference to the final results of Liaoning coastal economic zone.Through t-he whole dissertatio,taking two big present concern in China-urbanization and land res-ources as research content. From the traditional theoretical summary and development, fo-rming method system of evaluation on urbanization land resources effects,that is thedeepening of urbanization development theory and resource theory. Specifically, the main-content of this paper is as follows:(1)The first chapter is mainly on the research background and selected topic basis,tofind the value and significance of the research.Focus on domestic and foreign related r-esearch to find the theoretical foundation for the research. The latest research at homeand abroad are summarized to put forward the framework of this study, research object-ives,research focus and research ideas,and research approach of the dissertation itself isestablished to prepare for this theory papers based on those formation and developme-nt of related features.(2) The second chapter is mainly to study the relationship between urbanization pr-ocess and the overall environmental resources to be as the main content. There was an i--ntense focus on the interaction mechanism between urbanization and resources environme-nt,including the mode of interaction and rules, disintering from which to find the infl-uence on resources and environment in quantity, quality and structure of the system th-ree aspects. In order to put forward the theory of influence mechanism about urbaniza-tion and effect of resources and environment. Finally, the urbanization as a kind of ti-me variable to considering the resource and environmental problems in the process of u-rbanization. Generally speaking, through the study of this chapter,it has a overall grasp-of the relationship between the city and the overall resourceenvironment, On the basis ofthe relationship to research the next content.(3) The third chapter to study the core theories of the paper, that study the effectsof land resources in the city. It go over the changes of each other with urbanization an- d land resources,and create the concept system of urbanization land resourcesa effect intwo aspects from the elements and the connotation of the concept. It put forward the t-heory of positive and negative effects of urbanization land resources about the forms, fe-atures and transformation. The research suggest that the relativity, fuzziness and mobilit-y of urbanization land resources effects leads to the transformation of positive and n-egative effects and high to low efficiency internal conversion positive and negative eff-ects. City industrial upgrading and reconstruction of space, city space expansion andgove-rnment land finance is caused the urbanization land resources effects and the transfor-mation. On the whole, through the research on the concept of urbanization land resourc-es effect of positive and negative including its transformation principle and effect mechani-sm to constitute the core theory of the dissertation.(4) The fourth chapter studies on the land resources utilization. From a risk perspe-ctive, constructing theorical system,method system andcontrol mechanism of urbanizatio-n land resources utilization by risk theory system.Firstly,study on risk source of urbanizat-ion land resources utilization. Secondly,To establish the theoretical system of the whol-e urbanization land resources risk From the two aspects of land utilization risk use effe-cts on urbanization development and the evolution of land utilizaion risk in the proc-e-ss of urbanization.Profits from ecology and management methods of risk assessment res-earch,to establish risk assessment method system of the urbanization land resources fromthree aspects about the evaluation principles, evaluation factors and evaluation methods.Finally, through the three aspects of risk early warning mechanism, the mechanism of r-isk aversion and the city and the coordination mechanism of land resource to establishthe whole urbanization land utilization risk control mechanism. Through the two systemabout the theory and method but also risk prevention mechanism to lay the foundationfor risk assessment and early warning and control in the case area study.(5) In the fifth chapter, the Liaoning coastal economic zone as a case study, wit-h the urbanization land resources effec and domestic and overseas standardst as the theor-etical basis, building evaluation index system of urbanization development index and ur-banization land resource effect. Through the calculation of the2002-2011panel data toobtain the effects value of Liaoning coastal economic zone. Then use the ArcGIS natu-ral breaks, to rendering effects spatial distribution map of Liaoning coastal economic zo-ne. From the two aspects of numerical quantity and spatial distribution obtaining the c-haracteristics of land resources effects in Liaoning coastal economic zone. Profits fr-om the traditional evaluation methods of ecology risk, construct risk assessment system,including degree of risk, vulnerability and loss of land resources three dimensions. TakingLiaoning coastal economic zone2002-2011data as basic data, using gray prediction G-M (1,1) model to predict the future9years (2012-2020) data,thus forming the2002-2020panel data of the Liaoning coastal economic zone. By using risk assessment method,t-o calculate the historical and future risk index of6cities in Liaoning coastal economi-c zone. Based on the status and trend about risk of Liaoning coastal economic zone,proposed the risk early warning and control countermeasures, and provide decision suppo-rt for the urbanization development strategy and optimal utilization of land resourcesin Liaoning coastal economic zone in the future. According to the system theory,refor-ming the harmonic model. Solving the model equation of one dollar three times in thefirst quadrant of the maximum, Thus obtain the optimal effects value and maximum harmonic value that suitable for urbanization development.The optimal land resource-s effects value were used as evaluation stan-dards.On the assumption and simplified prin-ciple,obtaining the state of land utilization that adapt to its weight When the effects ach-ieve the optimal value,including Construction land per capita, arable land per capita, res-idential land per capita, public green land per capita four categories. And refines threeoptimal patterns of land use that is the high-energy mode, effective mode for the Liaoni-ng coastal economic zone. It provides reference about adjusting the structure of landuse in the process of urbanization for Liaoning coastal economic zone in the future.