Comprehensive regionalization and dynamic change of natural resources in Jilin Province

In order to promote the "two unified" management of natural resources, comprehensive zoning of natural resources based on natural environment, geography and natural resources research is conducive to fully understanding and analyzing the status of natural resources and environment in the region and the dynamic evolution law, and provide decision-making basis for sustainable utilization and planning of natural resources. Taking environmental geographical elements and natural resources as the basis and basis for the division of different regions, comprehensive zoning of natural resources can strengthen the scientific understanding of regional differences and dynamic changes of regional natural resources, and has important guiding significance for rational development and utilization of natural resources. With spatial location as the basic link to organize and connect all natural resources, basic surveying and mapping results as the framework, digital elevation model as the basis, high-resolution remote sensing image as the background, the research division was divided into 19 natural resources subregions. After quantitative analysis of the spatial and temporal dynamic characteristics of natural resources at all levels during 2010-2020, it was concluded that during this period, The succession of natural resources in the study area is manifested in the conversion among cultivated land, forest and grassland. The overall change trend of dominant resources in the study area is the decrease of forest resources and the increase of cultivated land resources.embodied in the forest into cultivated land, grassland into farmland, forest land and farmland conversion is mainly located in the northwest tilt piedmont plain semi-humid moist cultivated land area, the eastern basin Lin Geng subregion, farmland and grassland mainly located in the central platform for mutual transformation between cultivated land and humid area. the average proportion of cultivated land area in the western cultivated land subregion increases from 56.6% to 59.2%. Lin Geng the eastern area of woodland area proportion fell to 66.5% from 54.9% on average. Natural resources are affected by national policies, climatic conditions, and social and economic factors, and maintain the dominant characteristics of forest land and cultivated land. The advantages of cultivated land resources in western and central areas are relatively increased, while the advantages of forest land, grassland and water resources in western areas are disappearing.