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粤港澳大湾区红树林时空分布演变及现存林龄遥感分析

张信 陈建裕 杨清杰

张信,陈建裕,杨清杰. 粤港澳大湾区红树林时空分布演变及现存林龄遥感分析[J]. 海洋学报,2023,45(3):113–124 doi: 10.12284/hyxb2023042
引用本文: 张信,陈建裕,杨清杰. 粤港澳大湾区红树林时空分布演变及现存林龄遥感分析[J]. 海洋学报,2023,45(3):113–124 doi: 10.12284/hyxb2023042
Zhang Xin,Chen Jianyu,Yang Qingjie. Analysis of spatial-temporal distribution evolution and age of existing mangrove forests in Guangdong-Hong Kong-Macao Greater Bay Area using remotely sensed data[J]. Haiyang Xuebao,2023, 45(3):113–124 doi: 10.12284/hyxb2023042
Citation: Zhang Xin,Chen Jianyu,Yang Qingjie. Analysis of spatial-temporal distribution evolution and age of existing mangrove forests in Guangdong-Hong Kong-Macao Greater Bay Area using remotely sensed data[J]. Haiyang Xuebao,2023, 45(3):113–124 doi: 10.12284/hyxb2023042

粤港澳大湾区红树林时空分布演变及现存林龄遥感分析

doi: 10.12284/hyxb2023042
基金项目: 南方海洋科学与工程广东省实验室(广州)人才团队引进重大专项(GML2019ZD0602);卫星海洋环境动力学国家重点实验室资助项目(SOEDZZ2203);国家自然科学基金NSFC—浙江两化融合联合基金重点项目(U1609202);国家自然科学基金(42076216,41376184,40976109)。
详细信息
    作者简介:

    张信(1995-),男,四川省成都市人,主要从事海岸带遥感方面研究。E-mail:mg21270094@smail.nju.edu.cn

    通讯作者:

    陈建裕(1973-),男,浙江省慈溪市人,研究员,主要从事海岸带遥感及近海海洋遥感方面研究。E-mail:chenjianyu@sio.org.cn

  • 中图分类号: TP79;S718.5

Analysis of spatial-temporal distribution evolution and age of existing mangrove forests in Guangdong-Hong Kong-Macao Greater Bay Area using remotely sensed data

  • 摘要: 红树林作为热带、亚热带以红树植物为主体的海岸带生态系统,是重要的海岸湿地类型之一。本文使用多源、多时相遥感数据,形成了1969−2020年粤港澳大湾区岸线、围填海、养殖区、红树林分布数据图集,并利用联合红树林识别指数(CMRI)对大湾区现存红树林进行时序分析得到红树林林龄数据集。结果表明,通过多源遥感数据解译得到现存红树林数据集,结合CMRI时序数据可以建立现存红树林变迁历史,进而有效估算红树林林龄。粤港澳大湾区红树林的时空分布发生了明显变迁,现存红树林面积约为3 316 hm2,大湾区内部各地区存量林龄差异较大,整体林龄均值为20 a。近50年间,岸线整体向海移动,岸线变迁、围填海和养殖区变化显著影响红树林面积、空间分布及林龄大小,人工种植是近20年红树林恢复的主因。
  • 图  1  研究区位置

    Fig.  1  Location of the study area

    图  2  技术路线

    Fig.  2  Technical route

    图  3  不同传感器对红树林及光滩的可分性

    光滩包含淹水及未淹水两种状态

    Fig.  3  Separability of mangrove and tidal flats by different sensors

    The tidal flats include two states: flooded and unflooded

    图  4  3类不同林龄红树林的CMRI时序数据

    Fig.  4  The CMRI time series data of three kinds of mangrove forests with different ages

    图  5  红树林种植林龄分布

    Fig.  5  Distribution of existing mangrove forest planting age

    图  6  现存红树林种植林龄

    离群值表示该地区存在过高/低林龄红树林

    Fig.  6  Existing mangrove forest planting age

    Outliers indicate the presence of mangroves of too high/low stand age in the area

    图  7  红树林景观指数变化

    Fig.  7  Change of mangrove forest landscape index

    图  8  红树林制图结果比较

    Fig.  8  Comparison of mangrove forest mapping results

    图  9  围填海及养殖区年际变化分布

    Fig.  9  Age distribution of reclamation and aquaculture areas

    图  10  围填海、养殖区及现存红树林面积每5年增量变化及存量面积统计

    Fig.  10  Changes in reclamation, aquaculture areas, and existing mangrove areas every 5 years and stock area statistics

    图  11  CMRI提取的林龄(a)和叠加目视解译结果的林龄(b)

    Fig.  11  Forest age extracted from CMRI (a) and forest age with visual interpretation results (b)

    表  1  卫星遥感数据信息

    Tab.  1  Remotely sensed data information

    卫星年份分辨率/m数量/景
    KH-4A19642.741
    KH-4B1967−19691.8335
    KH-919736~92
    KH-919750.61~1.2223
    Landsat-31979604
    Landsat-51986−20103052
    HJ2008−20173016
    Landsat-82013−20193015
    ZY-320202.114
    GF-120202.17
    下载: 导出CSV

    表  2  红树林解译参考资料

    Tab.  2  Mangrove forests intetpretation references

    地区参考资料红树林主要分布位置
    江门市文献[28]
    文献[29]
    广海湾、镇海湾及银湖湾
    珠海市文献[30]淇澳岛、横琴岛滨海湿地公园及二井湾湿地公园
    中山市文献[30]横门水道、磨刀门水道
    广州市文献[30]
    文献[31]
    洪奇沥水道、南沙湿地公园、蕉门水道、新龙特大桥16涌至17涌段
    惠州市文献[32]考州洋、稔山镇三连洲、大亚湾渡头河、
    巽寮
    深圳市文献[33]
    文献[29]
    福田自然保护区和龙岗区东涌、鹿咀、
    坝光
    东莞市文献[30]
    文献[34]
    交椅湾苗涌及龙涌
    香港特别行政区文献[29]米埔自然保护区
    澳门特别行政区文献[35]路氹城生态保护区
    下载: 导出CSV
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出版历程
  • 收稿日期:  2022-04-01
  • 修回日期:  2022-10-10
  • 网络出版日期:  2022-10-24
  • 刊出日期:  2023-02-01

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