1980-2020年东海沿海城市水域系统时空变化特征及驱动机制  

Spatiotemporal variation characteristics and driving mechanisms of coastal urban water systems in the East China Sea from 1980 to 2020

作　　者：杨昀则 田鹏 李加林[2,3,4] YANG Yunze;TIAN Peng;LI Jialin(School of Civil&Environment Engineering and Geography Science,Ningbo University,Ningbo 315211,China;Department of Geography and Spatial Information Techniques,Ningbo University,Ningbo 315211,China;Donghai Academy,Ningbo University,Ningbo 315211,China;Collaborative Innovation Center for land and marine spatial utilization and governance research at Ningbo University,Ningbo 315211,China)

机构地区：[1]宁波大学土木工程与地理环境学院,浙江宁波315211 [2]宁波大学地理与空间信息技术系,浙江宁波315211 [3]宁波大学东海研究院,浙江宁波315211 [4]宁波陆海国土空间利用与治理协同创新中心,浙江宁波315211

出　　处：《海洋通报》2023年第4期430-443,共14页Marine Science Bulletin

基　　金：国家自然科学基金(42276234,41976209)。

摘　　要：开展东海沿海城市水域系统时空分布特征及驱动机制研究,促进高强度开发下沿海城市的水资源保护和社会经济高质量发展。基于东海沿海城市1980-2020年8期土地利用数据,结合土地利用模型和景观格局指数分析水域系统时空变化,以地理探测器揭示各水域系统变化的驱动因素。结果表明:(1)河流、海涂、滩地面积趋于下降,而湖泊和水库坑塘面积趋于增长,其水库坑塘扩张最为明显,增长幅度达80.73%。(2)水域系统转换剧烈,河流、海涂和滩地面积转出大于转入,而湖泊和水库坑塘面积转出小于转入,不同年份转换特征具有差异性,但均呈现出海洋→海涂→其他地类(耕地、建设用地、水库坑塘等)的转换特征。(3)水域景观整体上趋于复杂化和破碎化,最大斑块指数(LPI)、边缘密度(ED)、连通度(COHESION)、聚集度(AI)、香农多样性指数(SHDI)、香农均匀度指数(SHEI)均趋于下降。不同水域系统的景观类型水平指数具有差异性。(4)自然因素奠定了水域系统分布的空间格局,而社会经济因素加速了水域系统发生转换。Carry out research on the spatiotemporal distribution characteristics and driving mechanism of the coastal urban water system in the East China Sea,and promote water resource protection and high-quality social and economic development in coastal cities under high-intensity development.Based on the land use data of the coastal cities in the East China Sea from 1980 to 2020,combined with the land use model and landscape pattern index,the spatiotemporal changes of the water system are analyzed,and geographic detectors are used to reveal the driving factors of the changes in the water system.The results showed that:(1)The area of rivers,tidal flats,and beaches tended to decrease,while the area of lakes and reservoirs and ponds tended to increase.The expansion of reservoirs and ponds was the most significant,with an increase of 80.73%.(2)The conversion of water system was violent.The area of rivers,tidal flats and beaches were transferred out more than transferred in,while the area of lakes and reservoirs and ponds transferred out was smaller than transferred in.The transfer characteristics of different years were different,but seawater→tideland→others conversion characteristics of land types(farmland,construction land,reservoirs,ponds,etc.).(3)The water landscape tended to become more complex and fragmented as a whole.Its largest patch index(LPI),edge density(ED),connectivity(COHESION),aggregation index(AI),Shannon diversity index(SHDI)and Shannon evenness index(SHEI)both tended to decline.The landscape type level index of different water system was also different.(4)Natural factors established the spatial pattern of water system distribution,while social and economic factors accelerated the transformation of water system.

关 键 词：水域系统 驱动机制 地理探测器 东海 

分 类 号：X87[环境科学与工程—环境工程]