吉林省自然资源综合区划、动态变化及其原因分析

    Comprehensive regionalization, dynamic changes and cause analysis of natural resources in Jilin Province

    • 摘要:
      研究目的 开展自然资源综合区划分析,可以促进自然资源“两统一”管理,为自然资源资产管理、国土空间规划和用途管制、生态保护与修复等提供地球系统科学解决方案。
      研究方法 以吉林省为例,以基础测绘成果为框架、数字高程模型为基底、高分辨率遥感影像为依据,从地形地貌、温度降水、植被覆盖、产水模数、资源占比等多个维度构建综合区划指标体系,进行自然资源综合区划,分析其动态变化特征。
      研究结果 ①将研究区划分为19个自然资源亚区,其中南部山地湿润林矿亚区、东部山地湿润林矿亚区、北部高平原半湿润耕地亚区面积最大,占比分别为15.26%、12.79%、10.35%。②2010—2020年,自然资源演替表现为耕地、森林和草原三者之间相互转换,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%。
      结论 吉林省自然资源以林地和耕地为主导优势,受到国家政策、气候条件、社会经济因素影响,西部和中部区耕地资源优势相对增加,西部林地、草地、水资源优势下降。

       

      Abstract:
      Objective Conducting comprehensive zoning analysis of natural resources can promote the "two unifications" management of natural resources, and provide scientific solutions for natural resource asset management, national spatial planning and use control, ecological protection and restoration, and other earth system issues.
      Methods Taking Jilin Province as an example, based on the framework of basic surveying and mapping results, digital elevation models, and high−resolution remote sensing images, a comprehensive zoning index system is constructed from multiple dimensions such as terrain and geomorphology, temperature and precipitation, vegetation coverage, water production modulus, and resource proportion to conduct natural resource comprehensive zoning and analyze its dynamic change characteristics.
      Results (1) The region is divided into 19 natural resource sub regions, among which the southern mountainous humid forest mining sub region, the eastern mountainous humid forest mining sub region, and the northern high plain semi humid cultivated land sub region have the largest areas, accounting for 15.26%, 12.79%, and 10.35%, respectively. (2) From 2010 to 2020, the succession of natural resources manifested as the mutual transformation between cultivated land, forests, and grasslands. The overall trend of dominant resource changes in the study area was a decrease in forest resources and an increase in cultivated land resources, specifically manifested as the transformation of forests into cultivated land and grasslands into cultivated land. The mutual transformation between forest land and cultivated land was mainly located in the semi humid cultivated land sub area of the northwest inclined plain and the humid forest cultivated land sub area of the eastern basin. The mutual transformation between grassland and cultivated land was mainly located in the humid cultivated land sub area of the central plateau. The average proportion of cultivated land in the western cultivated land sub area increased from 56.6% to 59.2%, and the average proportion of forest land in the eastern forest cultivated sub area decreased from 66.5% to 54.9%.
      Conclusion Jilin Province's natural resources are dominated by forest land and arable land. Influenced by national policies, climate conditions, and socio−economic factors, the advantages of arable land resources in the western and central regions have relatively increased, while the advantages of forest land, grassland, and water resources in the western region have decreased.

       

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