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基于遥感增强嵌套模型红树林带水沙环境对码头建设的响应研究

唐榆森 涂新军 马克 李玫

唐榆森,涂新军,马克,等. 基于遥感增强嵌套模型红树林带水沙环境对码头建设的响应研究[J]. 海洋学报,2023,45(6):25–35 doi: 10.12284/hyxb2023059
引用本文: 唐榆森,涂新军,马克,等. 基于遥感增强嵌套模型红树林带水沙环境对码头建设的响应研究[J]. 海洋学报,2023,45(6):25–35 doi: 10.12284/hyxb2023059
Tang Yusen,Tu Xinjun,Ma Ke, et al. Study on the response of hydrodynamic force and sedimentation in mangrove zone to wharf construction by a coupled model based on remote sensing enhancement[J]. Haiyang Xuebao,2023, 45(6):25–35 doi: 10.12284/hyxb2023059
Citation: Tang Yusen,Tu Xinjun,Ma Ke, et al. Study on the response of hydrodynamic force and sedimentation in mangrove zone to wharf construction by a coupled model based on remote sensing enhancement[J]. Haiyang Xuebao,2023, 45(6):25–35 doi: 10.12284/hyxb2023059

基于遥感增强嵌套模型红树林带水沙环境对码头建设的响应研究

doi: 10.12284/hyxb2023059
基金项目: 国家自然科学基金(51879288);广东省水利科技创新项目(2020-27)。
详细信息
    作者简介:

    唐榆森(1997-),男,广西壮族自治区梧州市人,主要从事水文水资源方面研究。E-mail:tangys5@mail2.sysu.edu.cn

    通讯作者:

    涂新军(1972-),男,江西省余干市人,教授,博士,主要从事水文水资源方面研究。E-mail:eestxj@mail.sysu.edu.cn

  • 中图分类号: P751;TV92

Study on the response of hydrodynamic force and sedimentation in mangrove zone to wharf construction by a coupled model based on remote sensing enhancement

  • 摘要: 南海北部湾铁山港码头建设期间,邻近区域红树林带植株出现受损死亡现象。本研究构建基于遥感增强包含红树林潮间带的海湾水沙嵌套模型,评估码头建设对红树林带潮流、泥沙输移及冲淤的影响。结果表明:海湾水沙嵌套模型可充分利用南海海流模拟信息,且精细化模拟了工程建设附近海域泥沙输移规律。采用全球地表水覆盖几率遥感反演数据与当地潮位的信息融合技术,为红树林带水沙模拟提供了可靠地形信息。码头建设主要影响红树林带南部潮流,涨急时流速减小,落急时部分潮沟通道流速增大。当进港方案更改为过水钢栈桥,红树林带东南部流速略有增加。码头施工期,红树林带69%~72%范围的悬浮泥沙浓度增量介于20~50 mg/L之间。码头建设前,红树林带泥沙平均冲淤量为0.27 cm/a;进港方案分别为不过水通道和过水钢栈桥,码头建设后红树林带淤积量增加的面积占比分别为96.6%和89.3%,平均冲淤量分别为0.45 cm/a和0.36 cm/a。过水钢栈桥替换不过水通道,红树林带冲淤增量下降了50.0%。研究结论可为潮间带水沙环境模拟和红树林带保护决策提供科学依据。
  • 图  1  北部湾铁山港码头位置及邻近红树林带受损状况

    Fig.  1  Location of Tieshan Port, Beibu Gulf and damage of adjacent mangrove zone

    图  2  潮间带水体覆盖几率(a)及构建的地形高程(b)

    Fig.  2  Probabilities of water coverage (a) and established elevations in the intertidal zone (b)

    图  3  验证区域潮位−累积面积曲线(a)和基于Landsat(b)、TPXO模型预报(c)的潮位验证

    Fig.  3  Curve of tidal level-water coverage area (a), verifications of tidal level based on the Landsat (b) and predicted tidal level based on the TPXO (c) in the intertidal zone

    图  4  海湾水沙嵌套模型三角网格概化及验证站

    Fig.  4  Triangular mesh generalization and verification station for the hydrodynamic-sediment transport nested models

    图  5  潮位验证

    Fig.  5  Verification of tidal level

    图  6  潮流流速、流向和悬浮泥沙浓度验证

    Fig.  6  Verification of tidal velocity, tidal direction and suspended sediment concentration

    图  7  码头建设对红树林带涨落急流速的影响

    Fig.  7  Impact of the velocity at the most ebb and flow tide in mangrove zone from the wharf construction

    图  8  施工期红树林带悬浮泥沙浓度增量

    Fig.  8  Increment of SSC in mangrove zone during the construction period

    图  9  红树林带及邻近海域的冲淤变化

    Fig.  9  Change of erosion and deposition in mangrove zone

    图  10  红树林带年冲淤量空间统计分布

    累积面积比例对应的最大冲淤量(a)和平均冲淤量(b)

    Fig.  10  Spatial statistic distribution of the volume of erosion and deposition in mangrove zone

    The maximum (a) and the average (b) for cumulative area percentage

    图  11  码头建设对红树林带冲淤的影响

    Fig.  11  Impact of erosion and deposition in mangrove zone from the wharf construction

    图  12  码头建设后红树林带年冲淤增量空间统计分布

    累积面积比例对应的最大冲淤增量(a)和平均冲淤增量(b)

    Fig.  12  Spatial statistic distribution of the increment of erosion and deposition in mangrove zone after the wharf construction

    The maximum (a) and the average (b) increases for cumulative area percentage

    表  1  工程设计方案模拟情景

    Tab.  1  Simulation scenarios of engineering design schemes

    情景工程方案
    工程建设前,原有不过水便道延伸至拟建码头处
    施工期(停工时建设规模),进港方案为不过水通道
    施工期(停工时建设规模),进港方案为过水钢栈桥
    工程建成后,进港方案为不过水通道
    工程建成后,进港方案为过水钢栈桥
    下载: 导出CSV

    表  2  红树林带悬浮泥沙增量的浓度区间分布

    Tab.  2  Distribution of the range for individual concentration of suspended sediment in mangrove zone

    情景10~20 mg/L 20~50 mg/L 50~100 mg/L 100~150 mg/L
    面积/km2占比/% 面积/km2占比/% 面积/km2占比/% 面积/km2占比/%
    0.48416.82.06971.90.32411.300
    0.51818.0 1.99169.2 0.36612.7 0.0020.1
    下载: 导出CSV
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出版历程
  • 收稿日期:  2022-07-21
  • 修回日期:  2022-11-01
  • 网络出版日期:  2023-03-30
  • 刊出日期:  2023-06-30

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