1992-2022年菜子湖流域景观格局变化分析  

Change of landscape pattern in Caizi Lake Basin from 1992 to 2022

作　　者：路彤 赵素婷[3] 周存宇[1] 孙君瑶 LU Tong;ZHAO Suting;ZHOU Cunyu;SUN Junyao(College of Horticulture and Landscape Architecture,Yangtze University,Jingzhou 434025,China;Aquatic Plants Research Center,Wuhan Botanical Garden,Chinese Academy of Sciences,Wuhan 430074,China;Hubei Key Laboratory of Big Data in Science and Technology,National Science Library(Wuhan),Chinese Academy of Sciences,Wuhan 430071,China)

机构地区：[1]长江大学园艺园林学院,湖北荆州434025 [2]中国科学院武汉植物园水生植物研究中心,湖北武汉430074 [3]中国科学院武汉文献情报中心,科技大数据湖北省重点实验室,湖北武汉430071

出　　处：《湖北大学学报（自然科学版）》2025年第1期63-74,共12页Journal of Hubei University：Natural Science

基　　金：国家自然科学基金面上项目(32171575);国家自然科学基金青年基金(42201436)资助。

摘　　要：通过分析1992—2022年7期土地利用遥感影像,使用ArcGIS和Fragstats软件评估菜子湖流域30年间景观格局的变化。研究旨在揭示流域景观演变的特征与趋势,及其对生态系统健康和服务功能的潜在影响。结果表明,菜子湖流域的土地利用情况在研究期间整体保持稳定,耕地为流域内最主要的土地利用类型,建筑用地的增长趋势则尤为显著。研究发现耕地的破碎化程度较高,表明农业用地正在分割和转变,可能影响区域生态连通性和生物多样性。相比之下,水体斑块的破碎化有所减少,显示出流域水生态系统的一定恢复或改善。林地破碎化的缓和趋势及草地和裸地变化的不显著性,反映了人类管理措施和自然恢复力量的共同作用。菜子湖流域中部地区范围的优势斑块具有良好的连接性。流域东北自西南一带景观受到一种或少数几种优势斑块类型所支配,30年间景观呈现多样化发展。尽管菜子湖流域的景观稳定性显示出积极的增长趋势,但整体水平仍处于较低状态,这表明该流域的生态系统面临来自不断变化的人类活动和自然条件的持续压力,尤其是人口密度对研究区景观格局变化影响较大。本研究强调了对菜子湖流域内景观格局动态变化规律的深入理解,以及其对维护生态系统健康和服务功能的重要性。Based on the analysis of seven land use images from 1992 to 2022,ArcGIS and Fragstats software were used to evaluate the changes of landscape pattern in the Caizi Lake Basin in the past 30 years.The study aims to reveal the characteristics and trends of watershed landscape evolution and its potential impacts on ecosystem health and service functions.The results showed that the land use of Caizi Lake Basin remained stable during the study period,cultivated land was the most important land use type in the basin,and the growth trend of building land was particularly significant.The study found a high degree of fragmentation of cultivated land,indicating that agricultural land was being segmented and transformed,which might affect regional ecological connectivity and biodiversity.In contrast,the fragmentation of water patches had decreased,indicating that the water ecosystem in the basin had recovered or improved to some extent.The moderating trend of forest land fragmentation and the insignificance of grassland and bare land change reflected the combined effect of human management measures and natural restoration power.The dominant patches in the middle area of the Caizi Lake Basin had good connectivity.The landscape from northeast to southwest of the basin was dominated by one or a few dominant patch types,and the landscape showed diversified development in the past 30 years.Although the landscape stability of the Caizi Lake Basin showed a positive trend of growth,the overall level was still low,which indicated that the ecosystem of the basin was facing continuous pressure from changing human activities and natural conditions,especially the population density had a greater impact on the change of landscape pattern in the study area.In conclusion,this study emphasizes the importance of understanding the dynamic changes of landscape pattern in the basin of Caizi Lake and maintaining ecosystem health and service functions.

关 键 词：土地利用 景观格局指数 景观稳定性 驱动力分析 

分 类 号：P901[天文地球—自然地理学]