Study On Basin Development And Human Settlements Construction Of Southwest China

This dissertation aims at the study on resources and environment system of the southwest basin in the present tide of urbanization. It investigate the issues of frame structure, fundamental theory, system analysis, present problem, indicator system, influencing factor, countermeasure and suggestion, to enrich the theoretical system of human settlements in basin area, to offer a reference for relevant practice .It first shows the topic and explains the reality and the significance of the theory, then through the background analysis on macroscopic policy, social economy, human settlements sciences, region resources and environment quality synthetic evaluation, emphasizes the times background and delimits the paper's range of study in allusion to the paper's topic, defines what is called"southwest basin"and its studying range and objects, finally designs the paper's research frame due to five aspects: the research goal, the research content, the technical route, the research frame and the research technique.In the part which summarizes the theory, the paper defines six concepts:"basin","resources","environment","resources environmental evaluation","resources environmental carrying capacity","sustainable development", which are frequently seen and easily confused. Base on the study about the sustainable development appraisal theory and indicator system, the carrying capacity of regional resources environment appraisal, the online of basin human settlements construction and the trend of development, the systemic science correlation theory, the quality synthetic evaluation methodology, the paper's research establish above the solid foundation which the predecessor have founded.In the part which analyzes the basin's resource and environment system , the analyzing job is base on six aspects including the system constitution, the various subsystems' reciprocity, the system characteristic, the system structure and the system function. Base on the foundation of analysis, the model of system appraisal and supporting capacity research for basin resources environment has been founded. The research mentality of Chapter 3 are blow: (1)the system analysis—model construction;(2)unify the general and particular research;(3)comb the questions in administrative levels and categories.In the part of basin suitability appraisal , through the investigation about system suitability, the paper has established both general and particular evaluating indicator systems in view of the southwest basin. It has appraised the suitability of human inhabited area in southwest basin according to eight targets: elevation, >&=10 degrees accumulated temperatures, the land utilization type, the soil erosion, the slope, the landform, the mud-rock flow, the landslide avalanche and the phenomena of karst. It also has established leading factor for three kinds of suitable area. Finally, it summarized the targets for all kinds of suitable land in seven biggest basins in southwest and established the foundation for choosing key region to study supporting capacity of resource environment in the following chapters.In the part of evaluating indicator system research, the paper has first established the basin's resources and environmental system sustainable appraisal goal, the content, the method and the basic principle, then it also has proposed the bare structure about the establishing principle, the composition content, the screening method, the structure constitution and so on, in view of the evaluating indicator system. and southwest three provinces. Then, the statistical data is normalized according to the basin the reorganization, simultaneously the paper will ensure all indicators'weights by using the AHP theory and the expert consults law. Finally it will have processed the data substitution, obtains result of the southwest basin's resources and environmental system sustainable appraisal.In the influencing factor analysis part, by analyzing the southwest basin's resources and environmental system's sustainable influencing factors, the paper has first appraised the southwest basin's resources and environmental system's interior various subsystems' mutual influence and restricted condition from four aspects including the resources carrying capacity, the environmental security, the economic development and the population development. Then it has determined the key region of the southwest basin's resources environment carrying capacity's research through the relative resources environment carrying capacity's research and the fifth chapter's results: Jialing River, min Tuojiang River and Yangtze River , the main three big basin areas. Finally, it analizes and predicts the resources and environmental carrying capacity's dynamic change process of key region from 1999 to 2020 by the research of population growth, farming reduction and grain yield change of the three basins.In the countermeasure and suggestion part, the paper attempts to propose give some countermeasure and the suggestion from three aspects including the resources and environmental development, the socio-economic development, the science and technology and the population development for the southwest basin resources environment sustainable development.In the part of conclusion, the study summarizes the full text, and point out the deficiency of the research and the further researches to be conducted.