粤北山区县域生态用地识别与功能分区——以韶关市始兴县为例

Identification and Functional Zoning of Ecological Land in Mountainous Counties in Northern Guangdong:A Case Study of Shixing County in the Shaoguan City

土地是人类赖以生存和发展的物质基础。在土地利用过程中,生态环境效应日益突显出来,承载着土地生态系统服务功能的生态用地在土地管理理论与实践中越来越多的得到重视。以粤北山区始兴县为例,在明确土地生态用地以及生态用地区界定的基础上,识别县域关键生态过程,划定始兴县生态用地、生态用地区及其功能区,并提出各等级功能区的用地策略。结果表明:始兴县域范围内关键的生态过程有动植物生境、水生态系统以及地质灾害过程。基于关键生态过程划定生态用地区及生态用地,84.93%国土面积被划定为生态用地区,其中生态用地为166527.75 hm2。首先被列为生态安全控制区的面积为135276.26 hm2,其次是生态保育区,面积为29944.50 hm2,再次是生态整治区,最后是生态优化建设区。

Land resources have provided mankind with three major functions of production, life and ecology. In the process of land using, the ecological and environmental effects are increasingly highlighted. Consequently, ecological land that carries the service function of land ecosystem is getting more and more attention in the theory and practice of land management. Taking Shixing County in mountainous area of northern Guangdong as an example, based on the definition of land for ecological use and the definition of ecological area, the paper identifies the key ecological processes in the county, delineates the ecological areas and functional areas in Shixing County, and in the meantime put forward land strategy of the functional areas. The results show that the key ecological processes in Shixing county include animal and plant habitats, aquatic ecosystems and geological disasters. Based on the key ecological processes, the areas for ecological use and ecological land are demarcated. 84.93% of the country's land area is designated as the ecological area, of which the ecological land use is 165,627.75 hectares. An area of 135276.26 hectares is classified to be under ecological security control, followed by ecological conservation area with an area of 29,944.50 hectares, and ecological rehabilitation area, and finally ecological optimization construction area.