[目的]资源环境承载力是区域发展与管理的重要依据。[方法]该研究运用"木桶原理",构建了基于土地资源、水资源、水环境、大气环境等资源环境子系统的区域环境承载力评价体系,并以湖北省团风县为例进行定量测算。[结果](1)团风县整体呈"可载"状态,土地资源是团风县资源环境承载力的最大限制性因素。各子系统承载力呈大气环境承载力>水环境承载力>水资源承载力>土地资源承载力的规律。土地资源承载力最低为67. 73万人,大气环境承载力最高为871. 68万人。局部地区(马曹庙镇、贾庙乡)呈大气环境承载力>水环境承载力>土地资源承载力>水资源承载力的格局;(2)在承载力绝对量上,团风镇等西南部地区承载力高于其他地区,从地均承载力来看,上巴河镇最高,贾庙乡最低;从承载力指数来看,各镇(乡)承载力指数介于1. 48~2. 35,杜皮乡、贾庙乡最高,团风镇最低,尽管团风镇承载力最大但其"剩余空间"也最有限。[结论]所构建的县域资源环境承载力评价方法可为当前空间规划、主体功能区划等战略实施提供有效借鉴,评价结果对区域远期发展具有重要的指导意义。
Carrying capacity of resources and environment is an important basis for regional management and development. By using " barrel theory",this study constructed a carrying capacity evaluation system based on land resources,water resources,water environment and atmospheric environment. Taking Tuanfeng county as the research area,it quantified the carrying capacity of resources and environment. The results showed that the resources and environment of Tuanfeng was " available" and land resources was the most restrictive factor. The carrying capacity of Tuanfeng county ranked as atmospheric environmental capacity > water environmental capacity > water resources carrying capacity > land resources carrying capacity. The minimum carrying capacity was 677 300,and the maximum was 8. 7168 million. While,in some other areas like Jia Miao village and Ma Caomiao town,the carrying capacity ranked as atmospheric environmental capacity > water environmental capacity > land resources carrying capacity > water resources carrying capacity. As for the total amount of carrying capacity,the southwest area of Tuanfeng was higher than the other regions. From the perspective of per capita carrying capacity,Shang Bahe town was the highest,and Jia Miao village was the lowest. Analyzed from the carrying capacity index,each town was between 1. 48 and 2. 35,besides,the highest was in Du Pi village and Jia Miao village,and lowest in Tuanfeng. Although the carrying capacity in Tuanfeng county was largest,its development also born the biggest restriction. The evaluation method of carrying capacity for county resources and environment proposed in this study could provide an effective reference for the implementation of current strategies,such as space planning and the division of principal function areas. In general,the evaluation results is greatly instructive for long-term regional development.
Journal of China Agricultural Resources and Regional Planning
resources and environment