吉林省自然资源综合区划及其动态变化特征分析

    Comprehensive regionalization and dynamic change of natural resources in Jilin Province

    • 摘要: 为促进自然资源“两统一”管理,基于自然环境、地理以及自然资源研究进行自然资源综合区划,有利于充分认识和分析区域内自然资源环境状况以及动态演变规律,为自然资源的可持续利用和规划提供决策依据。把环境地理要素和自然资源作为划分不同区域的基础和依据,进行自然资源综合区划,可以强化对区域自然资源的地域差异和动态变化特征的科学认识,对合理开发利用自然资源具有重要的指导意义。以空间位置作为组织和联系所有自然资源体的基本纽带,基础测绘成果为框架,以数字高程模型为基底,高分辨率遥感影像为背景,将研究区划分为19个自然资源亚区,对2010—2020年各级分区的自然资源时空动态特征开展定量分析后认为,在此期间,研究区自然资源演替表现在耕地、森林和草原三者之间的转换,研究区主导资源总体变化趋势是森林资源减少、耕地资源增加,具体表现为森林转变为耕地、草地转变为耕地,林地与耕地的相互转化主要位于西北部山前倾斜平原半湿润耕地亚区、东部盆地湿润林耕亚区,草地与耕地的相互转化主要位于中部台地湿润耕地亚区,西部耕地亚区内耕地面积平均占比由56.6%升至59.2%,东部林耕亚区内林地面积平均占比由66.5%降至54.9%。自然资源受到国家政策、气候条件、社会经济因素影响,保持以林地和耕地为主导优势的特征,西部和中部区耕地资源优势相对增加、西部林地、草地、水域资源优势消失。

       

      Abstract: 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.

       

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