摘要
基于扬州市1980—2018年5期Landsat遥感影像,运用土地利用分析、景观格局分析和景观连接度分析等方法,对湿地生态空间格局及其演变特征进行研究。结果表明:①1980—2018年湿地面积增加10.2%,其中1990—2010年持续增加,2010—2018年湿地生态空间变化趋于稳定。②湿地面积不断增加,斑块优势度增大,形状和边缘效应趋向于复杂化,空间格局复杂性和聚集性减弱,景观连接度加强,但破碎化呈加重趋势。1980—2018年扬州市湿地保护成效显著,但湿地生态空间格局仍需进一步优化。
Based on the Landsat images of Yangzhou city from 1980 to 2018,we employed various methods(e.g.land use analysis,landscape pattern analysis,and landscape connectivity analysis)to analyze the spatiotemporal patterns and their evolution characteristics of wetland ecological space.Results showed that:①the area of wetlands increased by 10.2%,and kept the increase trend from 1990 to 2010,and then tended to be stable from 2010 to 2018.②The landscape fragmentation and patch dominance of wetlands were increased with more complicated patch shape and edge,and the attenuating spatial pattern complexity and aggregation.Although the area of wetlands increased with higher landscape connectivity,the landscape fragmentation worsened.This article demonstrates that the wetlands of Yangzhou city were well protected between 1980 and 2018,but the ecological spatial pattern of wetland still needs to be further optimized.
作者
禹文东
周超
曹兆阳
罗云建
徐勇
YU Wendong;ZHOU Chao;CAO Zhaoyang;LUO Yunjian;XU Yong(College of Horticulture and Plant Protection,Yangzhou University,Yangzhou 225009,China;Yangzhou Wetland Protection Management Station,Yangzhou 225009,China)
出处
《扬州大学学报（农业与生命科学版）》
CAS
北大核心
2021年第6期138-142,共5页
Journal of Yangzhou University：Agricultural and Life Science Edition
基金
扬州大学人文社科基金项目(XJ2019-26)
扬州市重点研发项目(社会发展)专项(YZ2019051)
扬州市古树名木健康定量评估及其保护研究项目(201901)
国家自然科学基金资助项目(31500388)
扬州市“绿扬金凤计划”项目(yzlyjfjh2016YB138)。
关键词
景观格局
湿地
景观连接度
距离阈值
生态空间
landscape pattern
wetlands
landscape connectivity
distance threshold
ecological space
