Persistent yet limited impact of protected areas on coastal wetland restoration in megacity cores
文献类型： 外文期刊
作者： Jia, Kai 1 ; Huang, Ailin 2 ; Deng, Liming 2 ; Yin, Xiaoling 2 ; Deng, Yue 6 ; Hou, Zhiwei 2 ; Li, Zhao 2 ; Liu, Ying 2 ; Shen, Jie 7 ; Yang, Ji 2 ;
作者机构： 1.Chinese Acad Trop Agr Sci, Rubber Res Inst, Haikou 571101, Peoples R China
2.Guangdong Acad Sci, Guangzhou Inst Geog, Guangdong Prov Key Lab Remote Sensing & Geog Infor, Guangdong Open Lab Geospatial Informat Technol & A, Guangzhou 510070, Peoples R China
3.Southern Marine Sci & Engn Guangdong Lab Guangzhou, Guangzhou 511458, Peoples R China
4.Shanghai Ocean Univ, Coll Oceanog & Ecol Sci, Shanghai 201306, Peoples R China
5.Guangdong Inst Carbon Neutral Shaoguan, Joint Lab Low carbon Digital Monitoring, Shaoguan 512029, Peoples R China
6.Chengdu Univ, Sch Architecture & Civil Engn, Chengdu 610106, Peoples R China
7.Rizhao Bur Nat Resources & Planning, Rizhao 276800, Peoples R China
关键词： Wetland conservation; Guangdong-Hong Kong-Macau; Landsat; Climate variation; Mangrove
期刊名称：GLOBAL ECOLOGY AND CONSERVATION （ 影响因子：3.4； 五年影响因子：4.3 ）
ISSN：
年卷期： 2024 年 56 卷
页码：
收录情况： SCI
摘要： Coastal wetlands, vital hubs of economic activities, are under significant pressure, leading to the establishment of protected areas as a crucial conservation tool. Yet, uncertainties remain regarding the long-term effectiveness of these areas, especially in megacity cores subject to intense human disturbances. This study utilized long-term Landsat satellites monitoring to track the annual impact of protected areas on coastal wetland variations in the Guangzhou-Hong KongMacau Greater Bay Area from 1990 to 2020. Using annual classification datasets featuring 8 land cover/land use types with an average overall accuracy of 94.0 +/- 0.4 %, the research identified a significant increase in wetland areas before 2002, followed by a slight decline due to the exploitation of aquaculture and water bodies. Protected areas established for over seven years demonstrated a significantly positive impact on wetland restoration, underscoring the value of long-term conservation efforts. While mangrove protected areas showed strong recovery trends, other wetlands in developing regions continued to decline despite protection. This analysis indicated that the overall benefits of protected areas diminished when considering broader spatial contexts. These insights emphasized the need for adaptive management strategies to enhance the effectiveness of protected areas in urban environment.
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