Yunnan Province, The Process Of Urbanization And Arable Land Resources Protection Coordination

Urbanization is the heart and important driving force for regional economic development, while social and economic development is based on a certain amount and quality of cultivated land resources. It is therefore important for development of modernization to ensure the coordinated development between cultivated land resources and urbanization development, and adjust and control the contradiction among regional population, socioeconomic and cultivated land. To analyze their interrelations and mechanisms could also provide the theoretical basis for implementation of cultivated land protection and actualization of the coordinated development of urbanization and cultivated land use.This thesis reviewed the interrelations of urbanization and cultivated land use, systematically analyzed the theoretical basis for the coordinated development of them, and researched the affirmative and negative effect of cultivated land use change caused by urbanization and their stress-restriction mechanism. Based on them, taking Yunnan Province as an example, it has done the measurement analysis and coordination analysis between cultivated land area and urbanization from 1996 to 2008. It structured the relevance regression model and coupling model of them, and calculated their coordination degree and coupling degree to study their situation of coordinated development. The results are as follows:①The cultivated land resources in Yunnan Province has complex change in cultivated land type and increase or a decrease in quantity caused by all kinds of driving forces. Among the driving factors contributing to the change, the stress to cultivated land resources caused by urbanization is more and more obvious, and it has become the mainly driving force;②The quantitative analysis indicated that there is a strong correlation between cultivated land quantity and urbanization levels, industrialization levels, gross domestic product (GDP), per capita GDP, the proportion of output value of non-agricultural industry in the GDP, the proportion of employees in non-agricultural industry in Yunnan Province. A law of inverted U-shaped curvilinear with 3-4 years periodic change was found between net decrement of cultivated land area and urbanization levels;③The coordination degree determined by net decrement of cultivated land area and urbanization levels in Yunnan Province is low in general assuming the type of hardly concessions, and cultivated land resources are kept within the hardly concessions weight of force threshold value. And prediction results indicated that it still assumes the type of hardly concessions and a line downtrend by 2020. The coupling analysis reveals that the coupling degree determined by integrative development of urbanization and system of cultivated land resources use exhibits a law of U-shaped curvilinear with periodicity and stages, which transits from low-level benign consistentness to current coordination development, but it will be into inconsistentness state in the future;④The coordination development between urbanization and cultivated resources use in Yunnan Province will be faced with many challenges in the future, including: food security will be under greater stress because the total population continues to grow; there are not enough of material and technology input; due to increasing higher demand pressure to cultivated land resources in the progress of urbanization, the difficulty to keep total cultivated land dynamic equilibrium will expand in Yunnan Province.In order to actualize the coordination development between urbanization and cultivated land resources use in Yunnan Province, some measures are proposed including: the implementation of sustainable urbanization strategy is the foundation; the main way is to combine land exploitation and consolidation and land reclamation with cities supporting countryside and industry re-feeding agriculture; the key issue is to ensure the economical and intensive utilization of each cultivated land; the important step is to carry out land ecological construction and maintain land ecological security; the pillar is to improve management mechanism.