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Beijing Forestry University (2008)

Study on Soil and Water Conservation Regionalization and Its System Architecture

Zhang Chao

Titre : Study on Soil and Water Conservation Regionalization and Its System Architecture

Auteur : Zhang Chao

Grade : Doctoral Dissertation 2008

Université : Beijing Forestry University

Résumé
Soil and water conservation regionalization has been a focus in basic research of Soil and Water Conservation, but the systemic research of soil and water conservation regionalization in large-scale is not much. The systemic and deep studies on soil and water conservation regionalization in China were done in the theories and methods in this paper. The studies have important theoretical and practical significance to the development of soil and water conservation regionalization in China, and certain significance to guide works of soil and water conservation in China.In this paper, study methods of theoretical analysis and example analysis are used. On the basis of the comprehensive analysis of domestic and international studies, history, current situation and existing problems of soil and water conservation regionalization are understood correctly. The connotation and nature of soil and water conservation regionalization are defined, and soil and water conservation regionalization is posited. The theoretical basis and principles of soil and water conservation regionalization are defined, indexes system design principles and component of soil and water conservation regionalization in China are presented, and methods of regionalization are confirmed. For the first time, the system architecture of soil and water conservation regionalization is discussed ; research and analysis are carried out in Shanxi Province as an example in this paper. The results show that :(1) Soil and water conservation regionalization is the sector compositive regionalization, is a basic task of soil and water conservation, is a macro, strategic, directional and technical document, is the strategy in large and medium-scale of soil and water conservation.(2) Basic theories of soil and water conservation regionalization include regional heterogeneity rule, sustainable development theory, the system scientific principles, ecological economics, soil and water resource management differences ; Regionalization principles include genetic principle, similar in the region and difference between regions, holistic principle, dominant principle, regional conjugate principle, integrity of the administrative border, combining qualitative and quantitative analysis, time limit principle.(3) Based on the design principles of indexes system of soil and water conservation regionalization, and combined impact factor of soil and water conservation, indexes system includes four elements of nature, land use, society-economy, soil erosion and water loss, principal component analysis is used to extract components and the weight of every component is put by rate of contribution.(4) The methods combining statistical analysis and spatial overlay analysis are used in soil and water conservation regionalization. Firstly, hierarchical cluster analysis is carried out according to integrated scores of every component, so zoning maps of every element are gotten. Whereafter, spatial overlay analysis is processed by GIS, zoning maps of every element are folded, so the results of soil and water conservation regionalization are achieved after adjusting.(5) The system architecture of soil and water conservation regionalization in China is the integration including research system, framework system and application system. Research system is the technical support system. Framework system includes the database system and establishment of soil and water conservation regionalization system, which is the way to the realization of soil and water conservation regionalization system. Application system defines the legal status of soil and water conservation regionalization and the relation between related regionalization (district), this system is the guarantee to execute soil and water conservation regionalization.(6) Based on the example of Shanxi Province, soil and water conservation regionalization is carried out according to determined theories and methods, which proved the scientificalness of theories and the feasibility of methods.The innovation of this paper : Through studies, the position of the soil and water conservation regionalization is defined clearly. The extraction methods of the dominant components from every element are presented, and regionalization methods combining statistical analysis and spatial overlay analysis are used. The system architecture of soil and water conservation regionalization in China is put forward, that has important guiding significance to the future works of soil and water conservation.

Mots clés : Soil and water conservation regionalization Index system Principal component analysis Hierarchical cluster analysis Spatial overlay analysis System architecture

Présentation (Dissertationtopic)

Page publiée le 6 mai 2013, mise à jour le 10 janvier 2018