摘要
为研究中国西南地区自然资源的动态变化特征,基于中国自然资源综合区划一级分区成果,以西南林耕自然资源大区为研究对象,通过选取符合区域特征的要素指标,确定指标权重,按照区划方案对西南林耕自然资源大区进行二级、三级区划,将其划分为6个自然资源亚区(二级区划)和11个自然资源地区(三级区划),并对区划单元内的自然资源动态变化进行了特征分析。研究区内自然资源以森林、耕地和草原为主,1990—2018年,自然资源变化主要表现为森林、耕地和草原三者间的相互转变,森林和耕地之间的相互转变主要分布于贵州和重庆的地区,森林和草原、耕地和草原之间的相互转变主要分布于云南和陕西的地区。建设用地明显增加,集中分布于各省会城市和直辖市。各类资源相互之间有明显转变,但面积在总体上基本保持动态平衡,表明自然资源的转变在合理范围内,其中四川盆地内的耕地和广西西部的森林受保护较好。各区划内优势资源明显,区划间变化特征彼此相异,可为全国或西南地区的自然资源配置、国土空间规划等自然资源统一管理提供决策支撑。
In order to study the characteristics of natural resources dynamic changes in Southwest China,the authors in this paper have taken the forest and cultivated land natural resources region of Southwest China as the research object and identified the factor indicators and their weights,based on the results of the first-level regionalization of China’s comprehensive regionalization of natural resources.The second-level and third-level natural resources comprehensive regionalization of this region have been carried out according to the regionalization scheme,and 6 natural resources sub-regions(second-level)and 11 natural resource districts(third-level)have been divided,with the analysis of the characteristics of natural resources dynamic changes within the regions.The natural resources in the study area are mainly forest,cultivated land and grassland,and the natural resources changes mainly focused on the transformation among forest,cultivated land and grassland.The transformation between forest and cultivated land was mainly distributed in Guizhou and Chongqing,while the transformation between forest and grassland and between cultivated land and grassland was mainly distributed in Yunnan and Shaanxi.The area of construction land has increased significantly,mainly distributed in provincial capitals and municipalities directly under the Central Government.All kinds of resources have changed obviously,but the whole area has basically kept a dynamic balance,which means the natural resources have changed within a reasonable range.The cultivated land in Sichuan Basin and the forest in Western Guangxi have been well protected.The superior resources in each division are obvious,and the change characteristics between divisions are different,which can provide some decision support for the unified management of natural resources such as natural resource allocation and land spatial planning.
作者
赖明
吴淑玉
张海燕
刘玖芬
王新华
陈熹卓
LAI Ming;WU Shuyu;ZHANG Haiyan;LIU Jiufen;WANG Xinhua;CHEN Xizhuo(School of Earth Resources, China University of Geosciences (Wuhan), Hubei Wuhan 430074, China;Key Laboratory of Coupling Process and Effect of Natural Resources Elements, Beijing 100055, China;Yantai Geological Survey Center of Coastal Zone, China Geological Survey, Shandong Yantai 264000, China;Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China;Natural Resources Comprehensive Survey Command Center, China Geological Survey, Beijing 100055, China)
出处
《中国地质调查》
2021年第2期83-91,共9页
Geological Survey of China
基金
中国地质调查局“自然资源要素综合观测数据集成与应用服务(20200810)”项目资助。
关键词
自然资源
综合区划
西南地区
动态变化
natural resources
comprehensive regionalization
Southwest China
dynamic changes
