Study On The Feature And Spatial-Temporal Regulation Of Rural-Urban Land Conversion

It is an increasingly critical mission to coordinate and balance the relationships between economic development and land resource scarcity during the course of social development. Rural-urban land conversion is the inevitable phenomenon of the social economic development. As long as the update of different economic developing phases, how do rural-urban land conversion feature and mechanism and regulation change? And how can we make full use of those mechanisms and regulation to efficiently control the rural-urban land conversion? This paper presents a systematic study on the features and spatial-temporal regulation of rural-urban land conversion with above mentioned issues.Chapter 1: Introduction. This section mainly states the background and meaning of selecting the study of rural-urban land conversion and spatial-temporal law, presents the research conditions, introduces the research route and contents.Chapter 2: Theoretical study of rural-urban land conversion. In order to ensure the study progresses in sound direction and with adequate depth, this section summarizes the domestic and the international literatures related to rural-urban conversion feature and process, the mechanisms and the models, etc. Then a comprehensive review was set forth to comment on the incomplete and weak points of those studies. Finally, the major theories adopted in this paper were introduced, including location theory, laws of territorial differentiation, theories on dynamic land conversion at urban-rural eco-economic fringes, and the economic development phases theory.Chapter 3: Features analysis of rural-urban land conversion. The analysis was conducted from the different aspects, including time, space, conversion subjects and objects. The temporal feature study mainly covers the time undulation of rural-urban land conversion, the changing direction of farmland loss within certain period, the time consistency among the urbanization and the increasing urban population and the losing cultivated land, the synchronization between the rural-urban land conversion and economic development. The spatial feature analyses mainly address the dissimilarity of rural-urban land conversion under the different scales. This section also studies the features of land conversion subjects and objects through surveying on the farmers and the collectives that are involved in the rural-urban land conversions.Chapter 4: Process analysis on rural-urban land conversion. This section focuses on the Spatial-temporal processes of rural-urban land conversion. According to the urban-rural interaction and economic development phase theory, the temporal process is divided into four phases: low speed conversion, speedup conversion, speed down conversion and dynamic balance. According to the economic development periodic theory, the temporal process is divided into another four phases: less quantity of conversion land, largely increasing quantity of conversion land, decreasing quantity of conversion land, and shrinking quantity of conversion land. In regards to the land succession, the general temporal process is described the followings: cultivated land on the outskirts→vegetable land→industrial land→residential land→urban commercial land. According to the spatial succession of urban-rural eco-economic fringe, the spatial growth of rural-urban land conversion is summarized as following step by step: invading flied pattern---extending along growth axle---filling in finger pattern---spreading circularly---re-extending along growth axle.Chapter 5: Mechanism study of rural-urban land conversion on different scales. The mechanism is fundamental for investigating the laws of rural-urban land conversion. This section firstly analyzes the relations between the scales and rural-urban land conversion. According to the data source from 31 provinces and municipalities of China, 14 cities in Hubei province, 18 counties in Jianghan plain, 39 collectives in Wuhan city and Luotian County and 188 conversion plots, the quantitative analysis on rural-urban land conversion mechanism was conducted on the scales from provinces, cities, counties, collectives and plots. The result reveals the driving forces that present influence on rural-urban conversion in different scales.Chapter 6: Spatial-temporal laws of rural-urban land conversion on the scale basis within different development phases of the economy. This part analyzes the relations between the economic development phase and rural-urban land conversion. Then according to the per capita GDP, industrial structure, employment structure and population structure, the paper classifies the economic development phases of 31 provinces in China and 14 cities in Hubei province from 1999 to 2004 and 18 counties in Jianghan plain from 2001 to 2004. Based on the analysis on land use change, the speed of rural-urban land conversion and rural-urban land conversion imbalance indexes of these different areas, the quantitative analysis on regional rural-urban land conversions in different economic development phases was conducted. The result shows rural-urban land conversion rules on the different scale bases of different economic development phases, which provides the reliable basis for how to coordinate and balance the rural-urban land conversion in the spatial-temporal settings.Chapter 7: Conclusion and discussion. Based on rural-urban land conversion mechanisms and the spatial-temporal laws, this paper presents the spatial-temporal actions and suggestions to coordinate and balance rural-urban land conversion and summarizes in general the major conclusions. Further discussions on weak points this paper were put forwards as well.