摘要
生态安全格局构建是人类生存、生产和生活的基本保障。该研究以亳州市为研究区域,基于电路理论的方法,通过土壤保持、水源涵养、碳固定3项生态服务功能评估,划定亳州市生态源地,并利用InVEST软件计算亳州市生境质量,模拟其生态阻力面,最后基于电路理论构建出亳州市生态安全格局。结果表明:亳州市共具有16个生态源地,形成16条生态廊道、21个关键夹点,并划分出两级生态改善区;整体空间格局以利辛县为中心节点,表现为"涡阳-利辛-蒙城"轴线式结构,而谯城区的生态格局遭到割裂,生态源地孤立;随着走廊宽度阈值变化,生态廊道范围随之变宽,并会产生新的连接路径,使得中心城区能与三县的生态资源连接起来。亳州市地处皖北传统农区,具有典型农耕平原特性,地表构成相对单一且均质,采用电路理论模拟亳州市生态安全格局,针对性更强,应积极维持、保护生态夹点,并逐步清除生态障碍,促进亳州市生态格局的全面构建。
The construction of ecological security pattern is the basic guarantee for human survival,production and life.Based on the method of circuit theory,the ecological source land of Bozhou City was determined by the evaluation of three ecological service functions including soil conservation,water conservation and carbon fixation,and the habitat quality of the city was calculated by using InVEST software to simulate the ecological resistance surface.Finally,the ecological security pattern of Bozhou was constructed based on circuit theory.The results show that there are 16 ecological sources in the city,forming 16 ecological corridors,21 key grips,and dividing into two levels of ecological improvement areas.The overall spatial pattern takes Lixin County as the central node,showing the axial structure of the county of Guoyang-Lixin-Mengcheng,while the ecological pattern of Qiaocheng District is separated and the ecological source is isolated.With the change of corridor width threshold,the scope of ecological corridor becomes wider,and a new connection path will be produced,which makes the central urban area connected with the ecological resources of the three counties.Bozhou is located in the traditional agricultural area of northern Anhui,which has the characteristics of typical farming plain,and the surface composition is relatively single and homogeneous.The ecological security pattern is simulated by circuit theory,and the pertinence is stronger.It should be actively maintained and protected ecological pinch points,and gradually removed ecological barriers to promote the comprehensive construction of the ecological pattern of Bozhou City.
作者
童亮
姚晓洁
王霞
TONG Liang;YAO Xiaojie;WANG Xia(School of Architecture and Urban Planning,Anhui Jianzhu University,Hefei 230022,China)
出处
《环境科学与技术》
CAS
CSCD
北大核心
2020年第11期217-226,共10页
Environmental Science & Technology
基金
安徽省自然科学基金项目(1908085ME140)。
关键词
生态安全格局
电路理论
农耕平原地区
亳州
ecological security pattern
circuit theory
farming plain area
Bozhou
