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甬台温海岸带景观格局及生态脆弱性时空演变特征
王奇1, 李伟芳2, 寇相玮1, 傅杰超1, 胡慧1
1.宁波大学 地理与空间信息技术系, 浙江 宁波 315211;2.宁波大学 土木与环境工程学院, 浙江 宁波 315211
摘要:
[目的] 分析浙江省宁波市、台州市及温州市的海岸带土地利用景观格局及生态脆弱性演变特征,以促进海岸带地区可持续发展,为生态建设及修复提供理论支撑。[方法] 基于甬台温海岸带1995-2015年三期土地利用数据,采用"压力度-敏感度-恢复力"评价模型对研究区进行景观类型脆弱度和生态脆弱度评测。[结果] ①景观格局变化表现为:耕地面积减少最多,其次为滩涂和林地;建设用地面积增加最多;耕地、林地斑块数量增多,呈破碎化趋势。②生态脆弱度高区域集中在杭州湾南岸的余姚市、慈溪市和台州湾的路桥区,20 a来研究区高脆弱度区域增多,整体生态脆弱度增加。③区域生态脆弱度与扰动指数、破碎度呈显著正相关,和景观脆弱度指数则完全相关。[结论] 甬台温海岸带景观类型变化明显,生态脆弱性增强。
关键词:  景观格局  生态脆弱性  甬台温海岸带  时空演变
DOI:10.13961/j.cnki.stbctb.2020.01.043
分类号:P737.1;U412.1+4
基金项目:浙江省哲社规划课题"东海区海岸带资源与社会经济发展报告"(16JDGH005)。
Temporal and Spatial Evolution Characteristics of Landscape Pattern and Ecological Vulnerability in Yongtaiwen Coastal Zone
Wang Qi1, Li Weifang2, Kou Xiangwei1, Fu Jiechao1, Hu Hui1
1.Department of Geography & Spatial Information Technology, Ningbo University, Ningbo, Zhejiang 315211, China;2.Faculty of Civil and Environmental Engineering, Ningbo University, Ningbo, Zhejiang 315211, China
Abstract:
[Objective] An analysis of the land-use landscape pattern and a evolution characteristics of the ecological vulnerability were carried out for the coastal zones in the cities of Ningbo, Taizhou, and Wenzhou in the Zhejiang Province. This was aimed at promoting the sustainable development of the coastal zone and for providing a theoretical support for ecological construction and restoration.[Methods] Based on the land use data of the 1995-2015 phase Ⅲ of the Yongtaiwen coastal zone, the "pressure-sensitivity-resilience" evaluation model was used to evaluate the landscape type vulnerability and the ecological vulnerability of the study area.[Results] ① The change in the landscape pattern was as follows:The area of the cultivated land decreased the most, which was followed by tidal flats and woodland. Further, the area of construction land increased the most, and the amount of patches of cultivated and forest lands were observed to increase, showing a fragmentation trend. ② The areas with high ecological vulnerability were concentrated in Yuyao, Cixi City, and the Luqiao District of Taizhou Bay located on the south bank of Hangzhou Bay. In the past 20 years, the high vulnerability regions of the observed area had increased, and the overall ecological vulnerability had also intensified. ③ The regional ecological vulnerability was significantly and positively correlated with the disturbance index and the fragmentation degree; further, it was completely associated with the landscape vulnerability index.[Conclusion] Various landscape types in the Yongtaiwen coastal region have significantly changed and the ecological vulnerability has been observed to increase.
Key words:  landscape pattern  ecological vulnerability  Yongtaiwen coastal zone  temporal and spatial evolution