摘要
面向“绿色城市圈”发展理念,构建武汉城市圈生态安全格局是实现区域经济、社会和生态协同发展的重要途径。传统研究采用的多指标叠加分析丢失了各因子蕴含的原始信息,仅可以识别同质化生态源地。将自组织映射神经网络模型(SOM)融入“重要性-敏感性-连通性”框架,依据生态系统服务组合划分生态功能区→识别多类型生态源地;综合自然因素与人类影响修正生态阻力面,并应用最小累积阻力模型(MCR)构建多特征生态安全格局。主要结论如下:武汉城市圈存在两类典型“高重要-低敏感—高连通”的生态源地,包括9756km^(2)的粮食供给区(孝感市、天门市、潜江市和仙桃市)和6791km^(2)的固碳释氧区(黄冈市东北和咸宁市东南),应作为生态安全核心区;低连通粮产源地分布于武汉市近郊与鄂州市,低连通碳汇源地分布在黄石市东南,宜作为生态保护功能区;共识别39条生态廊道,按照两端源地属性可划分为粮产连通轴、碳汇连通轴和跨类连通轴;综合构建了“一环、三翼、多联通”的武汉城市圈多特征生态安全格局。该格局有机融入了生态功能区划理念,有助于城市圈“因地制宜”采取相应的保护与修复策略。
Under the guidance of“green city circle”concept,building the ecological security pattern of Wuhan Metropolitan Area contributes to realizing the synergistic development of regional economy,society,and ecology.The multiindicator overlay analysis adopted in traditional studies loses the original information embedded in each factor and can only identify homogeneous ecological sources.This study incorporated a Self-Organizing Mapping Neural Network model(SOM)into the importance-sensitivity-connectivity framework,which could delineate ecologically functional areas based on ecosystem service portfolios and then identify multi-type ecological sources.After modifying the ecological resistance surface by integrating natural factors and human influence,the Minimum Cumulative Resistance model(MCR)was applied to form the multi-feature ecological security pattern.The main conclusions are as follows:there were two types of typical“high importance-low sensitivity-high connectivity”ecological sources in Wuhan Metropolitan Area,including 9756 km^(2)grain production area(Xiaogan,Tianmen,Qianjiang,and Xiantao)and 6791 km^(2)carbon sink area(northeast of Huanggang and southwest of Xianning),which should be regarded as the ecological security core area.Besides,low-connected grain production sources were located in the suburbs of Wuhan and Ezhou,and low-connected carbon sink sources were located in the southeast of Huangshi,which were suitable as ecological protection functional areas.Furthermore,39 ecological corridors were identified,which could be divided into grain production connecting axis,carbon sink connecting axis and cross category connecting axis according to the source attributes at both ends.In summary,a multi-feature ecological security pattern of“One Ring,Three Wings and Multiple Connections”were established in Wuhan Metropolitan Area.This pattern organically integrated the concept of ecological function zoning,which could help the city circle to adopt appropriate protection and restoration strategies accord
作者
安睿
窦超
陆砚池
仝照民
王楠楠
刘艳芳
庞惠心
刘耀林
AN Rui;DOU Chao;LU Yanchi;TONG Zhaomin;WANG Nannan;LIU Yanfang;PANG Huixin;LIU Yaolin(School of Resource and Environmental Sciences,Wuhan University,Wuhan 430072,China)
出处
《生态学报》
CAS
CSCD
北大核心
2023年第22期9486-9499,共14页
Acta Ecologica Sinica
基金
国家自然科学基金重点项目(42230107)。
