长时间尺度下自然资源动态综合区划理论与实践研究——以青藏高原为例

自然资源综合区划是自然资源统一管理与利用的基础,其动态变化是自然资源合理可持续利用的重要科学依据。由于青藏高原海拔高、气候寒冷,分布着除极地以外的最大冰川遗迹,极端的环境和气候对自然资源分布影响较大。选取含冰川积雪在内的14个指标,基于遥感和地理信息系统技术,采用K-means聚类算法对自然资源综合指数进行空间聚类,采用“自上而下”演绎法和“自下而上”归纳法相结合确定研究区自然资源综合区划的等级和范围; 探讨了1990—2018年青藏高原综合区划的变化,分析了自然资源动态变化特征以及空间差异。研究成果清晰地认识了青藏高原的自然资源关系和演化趋势,为区划的多学科交叉应用提供案例。

Theories and practice of the comprehensive regionalization of natural resources at a long time scale: A case study of Qinghai-Tibet Plateau

Comprehensive regionalization of natural resources is the basis of unified management and utilization of natural resources, and its dynamic change is an important scientific basis for the sustainable utilization of natural resources. Due to the high altitude and cold climate of Qinghai-Tibet Plateau, the largest glacier remains are distributed here except the Polar Regions. The extreme environment and climate have a great impact on the distribution of natural resources. With remote sensing and geographic information system technology, the authors in this paper have selected 14 indicators including glacier snow cover, and used the K-means clustering algorithm to cluster the comprehensive index of natural resources to determine the regionalization range. By using the combination of "top-down" deduction method and "bottom-up" induction method, the division grade was determined. Besides, the comprehensive division of natural resources in the study area was established to discuss the dynamic division changes of the comprehensive division of Qinghai-Tibet Plateau from 1990 to 2018 and analyze the dynamic change characteristics and spatial differences of natural resources. The research results could help researchers to clearly understand the relationship and evolution trend of natural resources in Qinghai-Tibet Plateau, and provide a case for the interdisciplinary application of regionalization.