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| 基于水动力ROMS与BOX耦合模型的长江口及邻近水域水通量及水体交换特性 | |
| 引用本文： | 王晓红,俞志明,樊伟,宋秀贤,曹西华,袁涌铨.基于水动力ROMS与BOX耦合模型的长江口及邻近水域水通量及水体交换特性[J].海洋与湖沼,2015,46(1):109-132. |
| 作者姓名： | 王晓红 俞志明 樊伟 宋秀贤 曹西华 袁涌铨 |
| 作者单位： | 1. 中国科学院海洋研究所海洋生态与环境重点实验室 青岛 266071;中国科学院大学 北京 100049;青岛科技大学环境与安全工程学院 青岛266042 2. 中国科学院海洋研究所海洋生态与环境重点实验室 青岛 266071 3. 中国科学院海洋研究所 海洋环流与波动重点实验室 青岛 266071 |
| 基金项目： | 海洋公益性行业科研专项资助项目（201105009）；全球变化研究国家重大科学研究计划(2010CB951204)；上海市科委国际合作项目(12230707500) |
| 摘 要： | 本研究将水动力模型ROMS(regional oceanic modeling system,区域海洋模式系统)与箱式(box)模型结合,详细阐述了长江口及邻近水域四个季节的水通量特征及水体交换特性。研究发现:总的水通量整体受季风控制,季风的作用在于使水体在南北方向上交替输送,而台湾暖流对春夏季底层水南向输运具有重要作用;直接进入123.5°E以东外海区域的水通量很小,而是先从南边界流出研究区域,然后通过海洋环流系统进入外海。在强烈季风下,水体更新依赖于季风方向的水平通量,主要是同层水体而不是表底层水体之间的交换。虽然水体更新时间较长的区域与缺氧区基本一致,但本研究认为该区域底层水体缺氧的本质原因是跃层阻隔了表底层水体之间的交换。 |
| 关 键 词： | 长江口 ROMS(the regional oceanic modeling system 区域海洋模式系统) 箱式(box)模型 水通量 水体交换特性 |
| 收稿时间： | 2014/2/26 0:00:00 |
| 修稿时间： | 4/2/2014 12:00:00 AM |
WATER FLUX AND EXCHANGE IN CHANGJIANG RIVER ESTUARY AND ADJACENT WATERS ON COUPLED MODEL OF HYDRODYNAMIC ROMS AND BOX MODEL |
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| WANG Xiao-Hong,YU Zhi-Ming,FAN Wei,SONG Xiu-Xian,CAO Xi-Hua and YUAN Yong-Quan.WATER FLUX AND EXCHANGE IN CHANGJIANG RIVER ESTUARY AND ADJACENT WATERS ON COUPLED MODEL OF HYDRODYNAMIC ROMS AND BOX MODEL[J].Oceanologia Et Limnologia Sinica,2015,46(1):109-132. | |
| Authors: | WANG Xiao-Hong YU Zhi-Ming FAN Wei SONG Xiu-Xian CAO Xi-Hua and YUAN Yong-Quan |
| Institution: | State Key Laboratory of Estuarine and Coastal Research, East China Normal University,State Key Laboratory of Estuarine and Coastal Research, East China Normal University,State Key Laboratory of Estuarine and Coastal Research, East China Normal University |
| Abstract: | Abstract: Coastal zone is of great socio-economic and environmental significance. It is also one of the most relevant breeding ground for human civilization. In this paper, taking Chongming Dongtan Coastal Zone in the Yangtze Estuary as a case study, after analyzing the spatio-temporal dynamics of the coastal ecosystems in the study area during the period 2000-2008, a ecosystem degradation index system based on the pressure, state and response (PSR) was developed for the assessment of the Chongming Dongtan coastal ecosystem. The results indicated that the Chongming Dongtan coastal zone was healthy except some light degenerate region. An area of 25.71 km2 (in 2000), 16.66 km2 (in 2003), 14.76 km2 (in 2005) and 40.46 km2 (in 2008) of the whole Chongming Dongtan coastal ecosystem, belongings to slight degradation. The natural wetland ecosystem, an important ecosystem type in the Chongming Dongtan coastal zone, was mostly healthy during 2000 to 2008. The large-scale reclamation and the invasion of the exotic plant S. alterniflora had threatened the ecosystem health of the natural wetland and caused its degradation. The production structure in agriculture needed to be improved and the amount of chemical fertilizer and pesticide application needed to be reduced, because they caused the degradation in the agricultural ecosystem during 2000 to 2008. The area and population of the suburban ecosystem had grown substantially, which could not keep a pace with a healthy environment and caused suburban ecosystem slightly degradation. Based on these results, management strategies were proposed to minimize and/or reduce future degradation and impact. The methodology developed in this study could provide a theoretical basis and a proven example for other comparable coastal zones in China. |
| Keywords: | Ecosystem-based coastal zone diagnosis on ecosystem degradation Chongming Dongtan |
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