| The study of land spatial pattern is an important prerequisite for optimizing the allocation of land resources,accelerating the pace of ecological civilization construction,and then achieving the great goal of sustainable development.At present,China's industrialization level is in the transformation stage from quantitative change to qualitative change,and the urbanization level is also in the process of changing from high-speed development to high-quality development.During this period,the challenges China is facing in terms of land and space planning include imbalanced distribution of resources and population,disorderly urban spatial development,and inconsistent planning and zoning rules.The Eighteenth National Congress of the Communist Party of China emphasized the important position of the " ecological-production-living " space for the first time.Under the new development environment,the " ecological-production-living " space,as a new spatial layout concept,is aimed at optimizing the structure of land resources,maintaining the order of development and construction,and realizing the coordinated and sustainable development of regional economies is of great significance.In this context,it is of great significance to study the suitability of the "Ecological-production-living" space and propose targeted optimization paths.This study takes the southern junction of the Hu-line as a study area,uses the method of geography information Tupu,and uses the land-use type area as a basic analysis unit.From the perspective of "Ecological-production-living" space,it combines the existing research results with the actual land classification of the southern junction of the Hu-line.Situation,the land is divided into three categories and seven sub-categories,and the “Ecological-production-living” spatial classification system of the study area is constructed.Then through interpretation,the land use data of the study area in 1990,2000 and 2015 were obtained,and the spatial and temporal analysis of the land use and "Ecological-production-living" land use at the southern end of the Hu-line through the spatial analysis and statistical analysis of the geographic information system And selected 36 evaluation factors that affect ecology,life,and production,and carried out land development suitability evaluation based on the " ecological-production-living land" in the study area.And on the basis of analysis and evaluation,it puts forward " ecological-production-living " space optimization suggestions for the problems of the spatial pattern and future development.The main research results are as follows:(1)Spatial distribution pattern of "ecological-production-living" :From the perspective of the "ecological-production-living" spatial transfer matrix from 1990 to 200,grassland ecological land is generally decreasing,mainly transformed into forest land ecological land and agricultural production land;industrial production land is generally increasing,mainly transferred from agricultural production land The overall use of forest land is increasing,mainly from agricultural production land,and the agricultural production land is decreasing.It is mainly converted into living land and forest land ecological land;living land shows a significant increase trend,mainly from agricultural production land conversion,water area ecology The overall use of land is increasing,mainly from the conversion of agricultural production land.The area of other ecological land did not change much,and showed a decreasing trend overall,mainly converted into forest land ecological land and water ecological land.(2)Spatial suitability evaluation of "Ecological-production-living" : the suitability of production is on the east side of the Hu-line.The Chengdu Plain and the surrounding low hilly areas are the main areas suitable for agricultural production in this area.In central and northeastern Yunnan,due to the large terrain fluctuations,the agricultural production efficiency is low,and the slope farmland area is widely distributed,so its production suitability evaluation level is low.The spatial distribution of life suitability is obviously different,showing typical regional characteristics.The areas with higher life suitability evaluation levels are mainly concentrated on the east side of the Hu-line,and the west side of the Hu-line is prone to occur due to topography,altitude,traffic density and geological disasters Due to the constraints of sex and other factors,the overall assessment of the suitability of overall life on the west side is low and development is difficult.The ecological suitability is rated low on the west side of the Hu-line,and it is also the object of our key protection in the future.Compared with the west side of the Hu-line,the southwestern Yunnan area and the northeastern Sichuan area on the east side of the Hu-line not only have high ecological importance,but also have very low ecological vulnerability.More suitable.(3)"Ecological-production-living" spatial conflict and optimization: The degree of "Ecological-production-living" spatial conflict is higher in the northwest,mainly affected by natural factors,and the degree of conflict in the southeast is relatively low,mainly affected by human activities.The optimization of ecological space should focus on protection on the northwest side and recovery on the southwest side,and establish a sustainable development concept with equal emphasis on resource development and protection.The optimization of production space can develop agricultural production according to local conditions,improve the productivity and economic benefits of cultivated land,and allow limited land to give full play to its effectiveness.The optimization of living space can promote the orderly development of the city through a unified and comprehensive national spatial planning.In the process of urbanization,it is necessary to conform to the national conditions and ensure the safety of the ecological red line and cultivated land red line based on geographic location,industrial layout,and transportation conditions,and realize space resources effective control. |
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