摘要
开展景观格局及生态风险评价研究有助于推进区域土地的合理利用,可为制定生态风险管理政策提供科学依据。文章通过分析青岛市土地利用和景观格局变化,构建生态风险指数模型,研究1990-2020年间青岛市生态风险的时空特征。结果表明:青岛市土地利用类型以耕地为主,其次是建设用地,土地利用演变主要发生在耕地、建设用地、草地和水域等4类用地;景观格局类型水平上,建设用地的破碎化程度较为严重,耕地始终是优势景观类型;青岛市的生态风险值呈下降趋势,并呈现出南北高、中间低的空间分布格局,空间自相关分析表明青岛市生态风险呈现高度正相关性,生态风险指数局部自相关空间分布以低-低和高-高聚集为主。
Research on landscape patterns and ecological risk assessment is essential for promoting the rational use of regional land,and provides a scientific basis for developing effective ecological risk management policies.This study analyzes land use and landscape pattern changes in Qingdao and constructs an ecological risk index model to investigate the spatiotemporal characteristics of ecological risk from 1990 to 2020.The results indicate that cultivated land was the dominant land use type,followed by construction land.Land use changes primarily occurred in four categories:cultivated land,construction land,grassland and water bodies.In terms of landscape pattern,construction land exhibited the highest degree of fragmentation,while cultivated land consistently remained the dominant landscape type.Ecological risk levels in Qingdao showed a declining trend over time and exhibited a spatial pattern characterized by higher risk in the north and south,and lower risk in the central region.Spatial autocorrelation analysis revealed a strong positive spatial correlation of ecological risk across the city,with local spatial autocorrelation patterns primarily exhibiting low-low and high-high clustering.
作者
刘兆德
刘文奇
杨松
陈有川
LIU Zhaode;LIU Wenqi;YANG Song;CHEN Youchuan(School of Architecture and Urban Planning,Shandong Jianzhu University,Jinan 250101,China;Jinan Institute of Planning and Design,Jinan 250014,China)
出处
《山东建筑大学学报》
2025年第6期25-33,共9页
Journal of Shandong Jianzhu University
基金
国家自然科学基金项目(51978388)。
关键词
土地利用变化
景观格局
生态风险评价
时空特征
land use change
landscape pattern
ecological risk assessment
spatiotemporal characteristics
