摘要
以仙游县为例,运用最小累积阻力模型、电路理论及重力模型等,探究2001—2021年该县生态源地、生态廊道、生态夹点和障碍点的演变情况,构建县域尺度的绿地生态网络,分析其演变过程与成因,并提出优化措施。结果表明:仙游县生态源地面积由2001年301.88 km^(2)增长至2021年319.20 km^(2),集中分布在北部林地区域,生态源地破碎化加剧导致源地与生态廊道数量增加;生态夹点面积从2001年16.18 km^(2)增长至2021年16.48 km^(2),而生态障碍点面积则从21.77 km^(2)减少至17.50 km^(2);基于生态重要性与源地演变分析所构建的仙游县绿地生态网络包含核心源地面积274.23 km^(2)、潜在源地面积29.18 km^(2)、生态廊道39条、生态踏脚石27个、生态夹点33个和生态障碍点30个。
Taking Xianyou County as an example,this research explored the evolution of ecological sources,ecological corridors,ecological pinch points and obstacle points from 2001 to 2021 by minimum cumulative resistance model,circuit theory and gravity model,constructed a county-level green space ecological network,analyzed its evolution process and causes,and proposed optimization measures.The results indicated that the area of ecological sources in Xianyou County increased from 301.88 km^(2) in 2001 to 319.20 km^(2) in 2021,primarily concentrated in the northern forest regions.The fragmentation of ecological sources led to an increase in the number of sources and ecological corridors.The area of ecological pinch point increased from 16.18 km^(2) in 2001 to 16.48 km^(2) in 2021,while the area of ecological obstacle point decreased from 21.77 km^(2) to 17.50 km^(2).The green space ecological network constructed in Xianyou County based on ecological importance and source evolution had a total core source area of 274.23 km^(2),a total potential source area of 29.18 km^(2),39 ecological corridors,27 ecological stepping stones,33 pinch points and 30 obstacle points.
作者
薛学佳
曾真
颜钰
谢宇为
李霄鹤
兰思仁
XUE Xuejia;ZENG Zhen;YAN Yu;XIE Yuwei;LI Xiaohe;LAN Siren(Fujian Agriculture and Forestry University,Fuzhou,Fujian 350100,China)
出处
《环境监测管理与技术》
北大核心
2025年第4期21-29,共9页
The Administration and Technique of Environmental Monitoring
基金
国家自然科学青年基金资助项目(32301661)
福建省第一批双创人才第一阶段支持经费基金资助项目(115-K8615001A)。
关键词
绿地生态网络
InVEST模型
电路理论
生态重要性
生态源地
仙游县
Green space ecological network
InVEST model
Circuit theory
Ecological importance
Ecological source
Xianyou County
