基于生态系统服务价值的莱州湾-黄河三角洲海岸带区域生态连通性评价  

Evaluation of ecological connectivity in the coastal zone of Laizhou Bay-Yellow River Delta based on ecosystem service value

作　　者：刘玉斌 李宝泉[1,3] 王玉珏 陈琳琳[1,3] 李晓炜[1,3] 侯西勇[1,3] LIU Yubin;LI Baoquan;WANG Yujue;CHEN Linlin;LI Xiaowei;HOU Xiyong(Yantai Institute of Coastal Zone Research,Chinese Academy of Sciences,Yantai 264003,China;University of Chinese Academy of Sciences,Beijing 100049,China;Chinese Academy of Sciences Key Laboratory of Coastal Environmental Processes and Ecological Remediation,Yantai 264003,China)

机构地区：[1]中国科学院烟台海岸带研究所,烟台264003 [2]中国科学院大学,北京100049 [3]中国科学院海岸带环境过程与生态修复重点实验室,烟台264003

出　　处：《生态学报》2019年第20期7514-7524,共11页Acta Ecologica Sinica

基　　金：中国科学院科技服务网络计划项目(KFJ-STS-ZDTP-023);中国科学院烟台海岸带研究所自主部署项目(YICY755021012);中国科学院地球大数据科学工程专项(XDA19060205);国家自然科学基金项目(31500389)

摘　　要：基于最小累积费用模型(MCR)和生态连接度指数(ECI),对莱州湾 黄河三角洲海岸带区域的生态连通性进行综合评价。结果显示:(1)莱州湾 黄河三角洲海岸带区域生态连通性存在明显的陆海梯度变化特征,以海岸滩涂地带为中心向两侧辐射呈条带状递减;(2)2000—2015年生态连通性指数整体呈现明显的下降趋势,下降幅度达12.69%;城市化和交通等基础设施建设使区域人工障碍物集聚化和扩张趋势明显,加剧陆域生态景观的破碎化和孤岛化趋势,从而导致生态系统服务功能退化、生态连通性降低;(3)莱州湾 黄河三角洲海岸带区域生态连通性整体处于较低水平,极低连通性和低连通性分布面积占比最大,较高连通性区域呈现向次一级或更低等级连通性转变的趋势。不同等级生态连通性分布区域的转移变化反映了人类活动和自然因素双重干扰下莱州湾 黄河三角洲海岸带生态系统格局及其物质、能量、生物、信息流等的变化规律。研究将为莱州湾 黄河三角洲生态系统保护与海岸带综合管理提供相关科学参考。The ecological connectivity in the Laizhou Bay Yellow River Delta coastal zone was evaluated by using the minimum cumulative resistance(MCR)and ecological connectivity index(ECI)methods.The results showed:(1)obvious gradient variation in ecological connectivity in the Laizhou Bay Yellow River Delta,with the coastal beach zone as the centre and decreasing to both sides;(2)a significant overall downward trend of the connectivity index from 2000 to 2015,decreasing by 12.69%.Infrastructure construction,such as urbanization and transportation,has caused agglomeration and expansion of artificial obstacles,aggravating the trend of fragmentation and islanding of the ecological landscape,resulting in the degradation of ecosystem services and decreasing ecological connectivity;(3)generally low ecological connectivity in the Laizhou Bay Yellow River Delta,with the areas of extremely low connectivity and low connectivity accounting for the largest proportion while the area of higher connectivity showed a trend toward secondary or lower levelconnectivity. The transfer and distribution of different levels of ecological connectivity areas reflect the change of ecosystempattern and material, energy, biology, and information flow in the Laizhou Bay Yellow River Delta under the dual influenceof human activities and natural factors. These results provide relevant scientific reference for ecosystem protection andintegrated coastal zone management in Laizhou Bay Yellow River Delta.

关 键 词：莱州湾 黄河三角洲 土地利用 生态系统服务价值 生态连通性 

分 类 号：F32[经济管理—产业经济]