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Circulation in the South china Sea in summer of 1998

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Chinese Science Bulletin 2000年第18期45卷 1648-1655页

作者： LIU Yonggang YUAN Yaochu su jilan JIANG Jingzhong second institute of oceanography State Oceanic Administration(SOA)Hangzhou 310012China Key Lab of Ocean Dynamic Processes and Satellite oceanography SOAHangzhou 310012China

Based on the CTD and meteorological data obtained by R/V Xiangyanghong No. 14 in the South china Sea (SCS) in the summer of 1998, both current velocity and volume transport are calculated by using a modified inverse model. Circulation in the SCS is analyzed by combining the calculated results with ADCP data. The following results are obtained, (i) The most important feature of the circulation in the northeastern SCS is that a branch of the Kuroshio intrudes into the SCS with a small volume transport. It flows anticyclonically through the Bashi Strait and towards the southwest off the Taiwan Island, and it does not intrude into the inner SCS. (ii) The northern SCS is dominated mainly by a cyclonic circulation system with two cold eddies, (iii) The central and southwestern SCSs are mainly occupied by anticyclonic circulation systems, including three anticyclonic and one stronger cyclonic eddies, (iv) In the southeastern SCS, there is a large scope of cyclonic circulation extending in the SW-NE direction,

关键词： SCS circulation in summer multi-eddy phenomenon modifled inverse model.

An analytical study on the second-order resonance system of tide in an ideal partially-enclosed bay

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Acta Oceanologica Sinica 2005年第5期24卷 1-13页

作者： WONG Lai Ah DONG Lixian CHEN Jay Chung su jilan Mechanical Engineering School Jilin University Changchun 130025 China Environmental Central Facility Institute for the Environment Hong Kong University of Science and Technology Hong Kong 9990777 China Shenzhen Key Laboratory for Coastal and Atmospheric Research Shenzhen 518057 China Key Laboratory of Ocean Dynamic Processes and Satellite oceanography State Oceanic Administration Hangzhou 310012 China second institute of oceanography State Oceanic Administration Hangzhou 310012 China

In the numerical studies of a real tide M4 resonance system, the Xiangshan Port which is a partially-closed bay, Dong et al. [1999. Acta Oceanologica Sinica, 21 （3）： 1-6] found the interesting phenomenon that the advection plays an important role in inhibiting the growth of the amplitude of the tidal second-order resonance response （M4）. This result is contrary to the general traditional ideas for a non-resonance system. How this phenomenon is interpreted and what internal mechanism is behind the phenomenon are the main focuses of this study. The followings are examined：（1） the dynamic features of a second-order resonance system of tide; （2） the dominating factors on the second-order resonance responses; （3） the effects of both the friction and the advection on the second-order resonance responses; and （4） their roles in dominating the second-order resonance response and internal mechanisms by using the analytical methods. The respective results show that：（1） Both the bottom friction and the advection play significant roles in dominating the magnitude of the amplitude of the second-order resonance responses; （2） the effect of the friction on the second-order resonance response depends on the distribution ratio of the work-done of the system to friction force exhausted into between the damping of the first-order system and the inner excitation of the second-order system; （3） the advection plays a positive role in increasing the amplitude of the second-order non-resonance response in the second order non-resonance of tide; （4） in a second-order resonance system of tide, the effect of the advection may be either to increase or to decrease the amplitudes of the second-order resonance responses of tide, which depends on the distribution ratio mentioned above.

关键词： tide second-order resonance advection

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互花米草有利于我国海岸带蓝碳功能提升

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Science Bulletin 2024年第12期69卷 1991-2000页

作者：张靖凡毛德华刘纪化陈雅萍 Matthew Kirwan Christian Sanders 周金戈卢哲覃国铭黄幸运李慧焉恒琦焦念志苏纪兰王法明 Guangdong Key Laboratory of Applied Botany Xiaoliang Research Station of Tropical Coastal Ecosystemsthe CAS Engineering Laboratory for Ecological Restoration of Island and Coastal EcosystemsSouth China Botanical GardenChinese Academy of SciencesGuangzhou 510650China University of Chinese Academy of Sciences Beijing 100049China South china National Botanical Garden Chinese Academy of SciencesGuangzhou 510650China Key Laboratory of Wetland Ecology and Environment Northeast Institute of Geography and AgroecologyChinese Academy of SciencesChangchun 130102China Marine Research institute Shandong UniversityQingdao 266237China School of Ecology Shenzhen Campus of Sun Yat-sen UniversityShenzhen 518107China Virginia institute of Marine Science Gloucester PointVA 23062USA National Marine Science Centre School of EnvironmentScience and EngineeringSouthern Cross UniversityCoffs HarbourNSW 2450Australia Guangdong Eco-engineering Polytechnic Guangzhou 510520China Carbon Neutral Innovation Research Center and Fujian Key Laboratory of Marine Carbon Sequestration Xiamen UniversityXiamen 361005China second institute of oceanography State Oceanic AdministrationHangzhou 310012China Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai) Zhuhai 519082China School of Ecology and Environment Hainan UniversityHaikou 570228China

Spartina alterniflora has rapidly and extensively encroached on china's coastline over the past *** the coastal areas invaded by ***,at most 93%are ***,the effect of *** invasion on soil organic carbon(SOC)stocks of coastal mudflats has not been systematically studied on a national ***,we quantified the nationwide changes in SOC stocks in coastal mudflats associated with *** invasion between 1990 and *** found that *** invasion significantly enhanced SOC stocks in coastal ***,the benefit of *** invasion of coastal SOC stock may be weakened by continuing human *** found that *** invading mudflats added 2.3 Tg SOC stocks to china's coastal blue carbon,while 1.78 Tg SOC stocks were lost mainly due to human activities,resulted in a net SOC stock gain of 0.52 Tg *** findings overturned the traditionally thought that *** invasion would reduce ecosystem services by highlighting that the historical invasion of *** has broadly and consistently enhanced blue carbon stock in coastal china.

关键词： Spartina alterniflora invasion Mudflats china coastal wetland Blue carbon sequestration