Analysis On Land Consolidation Based On Function-oriented Pattern In Tibet

Land consolidation is one of the core content of land use and management in the present and future quite a long time in China. As a large-scale systems engineering and new business, it is limited by the lack of necessary and sufficient theoretical preparation. The current land consolidation is the typical "problem-oriented pattern", with obvious shortcomings in terms of the coupling between land consolidation effect and regional demand, and carrying out as a whole. Under the situation of improving status of land consolidation, it is urgent for the theoretical perspective of land consolidation to change from problem-oriented to function-oriented. That is to say, it is the objective tendency that the transformation of land consolidation based on problem-oriented pattern to function-oriented pattern. To promote the transformation of land consolidation, it is a major issue to building the theory and method of land consolidation based on function-oriented. In Tibet, The ecological environment is fragile, ecological status is important, and ecological degradation is serious in recent years. Also, Tibet is special in natural geographic condition, land use condition, developmental stage, living customs, etc. Under the background of the above, land consolidation has particularity inevitably in Tibet. Land consolidation following other areas simply will, no doubt, lead to the mismatch between land consolidation effect and regional demand. How to carry out land consolidation scientifically became the realistic problems to be solved in Tibet.All around these issues, this thesis took research on the theory, method and empirical analysis of land consolidation based on function-oriented pattern. The relation between land consolidation and regional function was explained theoretically, and the transformation of theoretical perspective was analyzed deeply first. Based on these explanation and analysis, the theoretical framework of land consolidation based on function-oriented pattern was build from the aspects of concept, target, mode and regionalization. Land consolidation based on function-oriented pattern was explained as follows:It is required to determine the function orientation according to the feature of regional land use function, find the influencing factors firstly; It concludes measures of engineering, biology and management base on function orientation and its influencing factors; It is a process to optimize the land use structure, and promote regional land use function. Target, mode and regionalization are the core content of land consolidation based on function-oriented pattern. The target is to promote regional land use function, the mode is to optimize or eliminate the constraints of land use function, and the regionalization reflects spatial arrangement of target and mode.An analysis framework for land consolidation based on function-oriented pattern was established with PSR model. Based on the framework, this thesis did some method and empirical analysis on the pressure of land use function, the state of land use function, and the response of land consolidation. Firstly, the influence factors of the pressure of land use function were analyzed, and they were used to explain the features of internal pressure, input pressure and output pressure of land use function in Tibet. The pressure level was compared among land use functions according to the features. These researches show that qualitative analysis from inside and outside of the system respectively is a feasible way to explain the pressure of land use function. Secondly, the state of land use function was diagnosed by assessment of land use function, which was mainly including dynamic variability assessment and spatial differentiation assessment. The assessment method of dynamic variability was established and implied to the research in Tibet. The results show change features of the whole and each land use function in Tibet. Analogously, the assessment method of spatial differentiation was established and implied to the research in Tibet. The results show spatial differentiations of land use function in Tibet. These researches show that classification statistical analysis can be used to reflect the level of land use function of each unit, global autocorrelation analysis can be used to estimate the significance of the spatial differentiation of land use function, and local autocorrelation analysis can be used to represent the space expression of clustering further. Finally, the response of land consolidation was analyzed based on the pressure and the state of land use function in Tibet. The result about the research on the target showed that controlling the degeneration of the ecology function and promoting the social function were the primary guiding of land consolidation, slowing the degradation of farm production function and promoting the economic function were the secondary guiding of land consolidation in Tibet. According to the analysis of the restrictive factors, there were14land consolidation modes put forward, which were suitable for Tibet, such as improvement of cultivated land quality, update of agricultural production mode, etc. Based on the spatial differentiations of land use function and the natural conditions such as landscape features, the entire region was divided into4land consolidation regions and6land consolidation sub-regions with overlay method. The target and mode of each region were given subsequently.It is considered that land consolidation based on function-oriented pattern highlights the area function guide for land consolidation, and is an effective way to promote regional function. The theoretical, methodological, and empirical researches on land consolidation based on function-oriented pattern enriched and developed the land consolidation theory and method research. The research is a exploration of systematic research in Tibet, and will provide scientific support for land consolidation work in Tibet as well.