Evaluation of geologic bearing capacity of coastal zones taking coastal area of Laizhou Bay as an example

2016 ◽  
Vol 134 ◽  
pp. 129-139 ◽  
Author(s):  
Dongmei Song ◽  
Lin Zang ◽  
Chunxiao Liu ◽  
Xuefa Shi ◽  
Huisheng Wu
Keyword(s):  
Bearing Capacity ◽  
Coastal Area ◽  
Laizhou Bay ◽  
Coastal Zones

Nutrient management for coastal zones: a case study of the nitrogen load to the Stockholm Archipelago

2002 ◽  
Vol 45 (9) ◽  
pp. 309-315 ◽  
Author(s):  
H. Scharin
Keyword(s):  
Coastal Area ◽  
Nutrient Management ◽  
Optimal Allocation ◽  
Drainage Basin ◽  
Cost Effective ◽  
Coastal Zones ◽  
Atmospheric Depositions ◽  
Stockholm Archipelago ◽  
The Baltic ◽  
Final Impact

This study investigates cost-effective solutions of decreasing the nutrient load to a coastal area, using a drainage basin approach. The study is applied to the Stockholm Archipelago, a coastal area of the Baltic Sea suffering from eutrophication caused by the load of nutrients entering the area. Nitrogen is the nutrient of concern in this study since it is the limiting nutrient of the Archipelago. The main sources of nitrogen are wastewater plants, agriculture, and atmospheric depositions. The final impact of a deposition depends on the buffering capabilities it is subject to on its trajectory from the source to the recipient. This is the reason for using a recipient oriented approach, in which the focus is to reduce the final impact of a deposition. The model integrates data over hydrology, land cover, land use, and economy in order to find the optimal allocation of measures. Results indicate that in order to achieve cost effectiveness, the major part of nitrogen load reduction to the Archipelago should be done at the wastewater plants and by constructing wetlands. The minimum annual cost of reaching a 50% reduction of the load to the Archipelago was estimated to around 191 million Swedish crowns (around $ 19 million).

Study on Relationship between Groundwater Conductivity and Chemical Characteristics in Seawater Intrusion Area around Laizhou Bay

2013 ◽  
Vol 864-867 ◽  
pp. 903-907
Author(s):  
Qiao Su ◽  
Chang Sheng Peng ◽  
Hong Jun Yu ◽  
Xiong Yong Xu ◽  
Jing Yao
Keyword(s):  
Seawater Intrusion ◽  
Coastal Area ◽  
Chloride Ion ◽  
High Accuracy ◽  
Ion Concentration ◽  
Chemical Characteristics ◽  
Laizhou Bay ◽  
Titration Method ◽  
Fast Speed ◽  
Mineralization Degree

Based on the monitoring data in the coastal area of Laizhou bay, the paper presents the correlation between groundwater conductivity and chemical characteristics.The results showed that,compared with titration method,application of Diagometer has the advantages of high accuracy,fast speed and simple operation.When the seawater intrusion has not yet occurred or relatively weak,the effect of the application of diagometer is not very obvious.Only when seawater intrusion occurs serious,application of Diagometer can reflect the changes of mineralization degree and chloride ion concentration of groundwater accurately.

scholarly journals Aspectos físicos das dinâmicas de ambientes costeiros, seus usos e conflitos

2004 ◽  
Vol 10 ◽  
Author(s):  
Rodolfo José ANGULO
Keyword(s):  
Coastal Area ◽  
Coastal Areas ◽  
Coastal Engineering ◽  
Coastal Environments ◽  
Coastal Zones ◽  
Institutional Dynamics ◽  
Atmospheric Processes ◽  
Meeting Point ◽  
The Ideal

Os ambientes costeiros são extremamente dinâmicos, neles convergem processos terrestres, oceânicos e atmosféricos, que alteram constantemente suas características. Um dos principais desafios da geologia, oceanografia e engenharia costeiras e compreender como e porque estas mudanças ocorrem. Por outro lado à ocupação das zonas costeiras é complexa, diversificada e gera numerosos conflitos. Apesar das diversas iniciativas para diminuir estes conflitos ainda é necessário percorrer um longo caminho para resolver os problemas. Ainda faltam definições importantes tais como: Que litoral nos queremos? Qual é o litoral ideal e qual é possível de ser construído? Como gerir a zona litorânea? Ainda precisamos entender melhor como funciona o litoral do ponto de vista geológico e oceanográfico; mas, sobretudo, devemos entender as inter-relações com as dinâmicas biológicas, econômicas e sociais, políticas, legais e institucionais. Physical aspects of coastal environments’ dynamics: uses and conflicts Abstract Coastal environments are extremely dynamic. They are the meeting point of land, ocean, and atmospheric processes that are constantly changing their features. One of the main challenges posed to geology, oceanography, and coastal engineering is the understanding of how and why these changes occur. Conversely, the occupation of coastal zones is complex, diversified, and leads to many conflicts. Despite the numerous attempts at reducing these conflicts, we are still a long way from solving these problems. Important definitions are still missing: What kind of coast do we want? What is the ideal coastal area like and what can be built on it? How do we manage coastal areas? We still need to understand better how the coastline works geologically and oceanographically. But above all else, we need to understand its interrelationships with biologic, economic, social, political, legal, and institutional dynamics.

Discussion on the Fluorosis in Seawater-Intrusion Areas Along Coastal Zones in Laizhou Bay and Other Parts of China

2019 ◽  
Vol 13 (2) ◽  
pp. 435-442 ◽  
Author(s):  
Q. Chen ◽  
J. Wei ◽  
H. Wang ◽  
L. Shi ◽  
Z. Gao ◽  
...  
Keyword(s):  
Seawater Intrusion ◽  
Laizhou Bay ◽  
Coastal Zones

Three-dimensional mapping of soil salinity in the southern coastal area of Laizhou Bay, China

2018 ◽  
Vol 29 (10) ◽  
pp. 3772-3782 ◽  
Author(s):  
Wenquan Liu ◽  
Xingyong Xu ◽  
Fang Lu ◽  
Jianrong Cao ◽  
Ping Li ◽  
...  
Keyword(s):  
Soil Salinity ◽  
Coastal Area ◽  
Three Dimensional ◽  
Laizhou Bay ◽  
Three Dimensional Mapping ◽  
Dimensional Mapping

scholarly journals Trace-metal distribution and ecological risk assessment in sediments of a sheltered coastal area (Gulf of Gaeta, central-eastern Tyrrhenian Sea, Italy) in relation to hydrodynamic conditions

2021 ◽  
Author(s):  
SIMONE BONAMANO ◽  
DANIELE PIAZZOLLA ◽  
SERGIO SCANU ◽  
VIVIANA PIERMATTEI ◽  
MARCO MARCELLI
Keyword(s):  
Ecological Risk ◽  
Coastal Area ◽  
High Performance ◽  
Sediment Resuspension ◽  
Sediment Quality ◽  
Assessment Tools ◽  
Tyrrhenian Sea ◽  
Hydrodynamic Conditions ◽  
Coastal Zones ◽  
Guideline Value

This study investigates the relationship between sediment contamination and hydrodynamic conditions in the Gaeta Gulf (Tyrrhenian Sea, Italy), an anthropogenically impacted and sheltered coastal area. The pollution levels, potential toxicity, and ecological risk of trace metals were analysed in 16 sediment sampling sites using Sediment Quality Guidelines (SQGs), the Adverse Effect Index (AEI), and the Mean ERM Quotient (m-ERM-Q). The bottom shear stress of the study area, evaluated using an annual simulation of a 3D numerical model, was used to calculate a new Sediment Mobilisation Index (SMI) that detects the coastal zones where a low probability of sediment resuspension occurs. As, Ni, and Cu concentrations exceeded the Threshold Effects Level (TEL) guideline value and  AEI limit in several sampling sites, indicating their ability to produce adverse effects on biota. Moreover m-ERM-Q showed the highest values of potential ecological risk in most of the sampling sites located in the inner part of the Gulf of Gaeta. In this area, the highest SMI values were also identified, demonstrating that there is a tight relationship between the two indexes (R2 = 0.8214). The application of SMI in sheltered areas will help achieve high performance of monitoring and hazard assessment tools through obtaining predictable responses on hotspot identification.

scholarly journals SO SÁNH MỘT SỐ ĐẶC ĐIỂM ĐỘNG LỰC VÀ TRẦM TÍCH VEN BỜ CHÂU THỔ SÔNG HỒNG VÀ DƯƠNG TỬ

2020 ◽  
Vol 19 (4) ◽  
pp. 449-461
Author(s):  
Vu Duy Vinh ◽  
Nguyen Minh Hai
Keyword(s):  
Coastal Area ◽  
Yangtze River ◽  
Developmental Process ◽  
Yangtze River Delta ◽  
Sediment Dynamics ◽  
River Delta ◽  
Sediment Flux ◽  
Red River ◽  
Coastal Zones ◽  
Red River Delta

The Red river delta coastal area (Vietnam) and Yangtze river delta coastal area (China) not only play an important role in developmental process of each country but also show typical characteristics of hydrodynamics and sediment dynamics of estuaries and delta coastal areas. Based on previous studied results of hydro-sediment dynamics in two delta coastal zones that were published, this paper gives a comparison of hydrodynamics and sediment dynamics of the coastal zones of Red river and Yangtze river. The results showed that there are some similar features of these two regions such as riverine hydrology, decreased fluvial sediment flux due to the dam, grain size of suspended sediment, alongshore sediment and morphological change. Besides, these two regions also have some distinct characteristics such as tidal regime and residual field currents.

scholarly journals Assessment of Organic Contamination along the Coast of Laizhou Bay, China: Combining Chemical Analysis and Integrated Biomarker Responses in the Clam Ruditapes Philippinarum

2021 ◽  
Author(s):  
Zhifeng Wang ◽  
Yuanyuan Shao ◽  
Chaona Li ◽  
Lei Liu ◽  
Li Zhu ◽  
...  
Keyword(s):  
Chemical Analysis ◽  
Organic Pollutants ◽  
Coastal Area ◽  
Ruditapes Philippinarum ◽  
Coastal Environment ◽  
Eastern Coast ◽  
Laizhou Bay ◽  
Organic Contamination ◽  
Entire Area ◽  
The Impact

Abstract The marine coastal area is facing serious challenges due to several artificial pollution sources. An investigative biomonitoring survey was conducted along the coastal area of Laizhou Bay, China, which combined an evaluation of organic pollution and biomarker responses in the clam Ruditapes philippinarum. Meanwhile, the contents of polychlorinated biphenyls (PCBs), total petroleum hydrocarbons (TPHs) and nonylphenol (NP) in surface sediments at the biomonitoring sites were measured. The results indicated that a complex mixture by these toxic organic pollutants was prevalent throughout the entire area. Concentrations (mean ± standard error) of PCBs, TPHs and NP in sediments of the study area were 1.90 ± 0.10 µg kg-1, 39.55 ± 2.42 mg kg-1, 9.23 ± 0.41 µg kg-1 dry weight, respectively. Biomarker responses of superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GPx), Glutathione S-transferase (GST), total glutathione (GSHt) and lipid peroxidation (LPO) levels were assayed in the gills and digestive glands of R. philippinarum collected from eleven sites. Finally, biomarker responses obtained in gills were selected to calculate the integrated biomarker response (IBR) index and to assess the impact of integrated organic contaminants from different stations. The site S2 exhibited an IBR value of 2.65 and was considered as the place with the greatest stress in coastal environment. The western coast (S1-S4) and eastern coast (S9-S11) exhibited higher environmental stress than the sampling sites along the southern coast of Laizhou Bay. PCBs and NP were the main organic pollutants which have caused high level of pollution pressure on R. philippinarum in Laizhou Bay coastal area. The integrated assessment approach of organic contamination which combined chemical analysis and multi-biomarker responses was proved to be practical and useful in coastal environment assessment programs.

scholarly journals ANALISIS PEMANGKU KEPENTINGAN DALAM PENGELOLAAN KAWASAN PESISIR BERKELANJUTAN DI KABUPATEN GUNUNGKIDUL

2019 ◽  
Vol 9 (1) ◽  
pp. 23
Author(s):  
Riesti Triyanti ◽  
Indah Susilowati
Keyword(s):  
Coastal Zone ◽  
Coastal Management ◽  
Coastal Area ◽  
Management Strategies ◽  
Coastal Zone Management ◽  
Coastal Zones ◽  
Zone Management ◽  
Coastal Area Management ◽  
Management Policies ◽  
Area Management

Pengelolaan kawasan pesisir berkelanjutan memerlukan peran dan dukungan seluruh stakeholders. Penelitian ini bertujuan untuk menganalisis peran, kepentingan, dan pengaruh stakeholders dalam pengelolaan kawasan pesisir Gunungkidul, serta merumuskan strategi untuk pengelolaan kawasan pesisir yang berkelanjutan. Penelitian ini menggunakan metode kuantitatif dan kualitatif dengan alat bantu kuesioner dan wawancara mendalam. Pengumpulan data dilakukan pada bulan April-Juli 2018; sedangkan pengolahan data menggunakan software Mactor dan dianalisis menggunakan analisis stakeholders. Hasil penelitian menunjukkan bahwa pengelolaan kawasan pesisir Kabupaten Gunungkidul melibatkan tiga pemangku kepentingan kunci, enam pemangku kepentingan utama, dan tiga pemangku kepentingan pendukung, yang bertindak sebagai koordinator, fasilitator, dan pelaksana. Pemetaan stakeholders menunjukkan kategori pemangku kepentingan yang terlibat dalam pengelolaan kawasan pesisir sebagai subyek, pemain, aktor, dan penonton. Strategi untuk mengoptimalkan pengaturan pemangku kepentingan dalam mewujudkan pengelolaan kawasan pesisir yang berkelanjutan diperlukan melalui peningkatan kolaborasi dan kerja sama antara subyek dan pemain yang memiliki tingkat kekuasaan dan kepentingan yang tinggi terhadap kebijakan pengelolaan kawasan pesisir. Hal ini dapat terwujud melalui peningkatan kerja sama dan kolaborasi yang efektif antara pemerintah dan masyarakat dalam perwujudan kebijakan pengelolaan kawasan pesisir berkelanjutan. Strategi pengelolaan kawasan pesisir berkelanjutan harus melibatkan seluruh pemangku kepentingan sehingga dapat melindungi sumber daya alam dan jasa lingkungan, memperhatikan kualitas lingkungan, dan meningkatkan pendapatan masyarakat pesisir. Title: Stakeholders Analysis of Sustainable Coastal Zone Management in the Gunungkidul RegencySustainable management of coastal area requires a role and support from all stakeholders. The aims of this study are to analyze the role, interest, and influence of stakeholders in the coastal zone management of Gunungkidul, as well as to formulate sustainable coastal management strategies. The research used quantitative and qualitative methods with questionnaires and in-depth interview. Data were collected from April to July 2018; processed by Mactor software and analysed using stakeholder analysis. The results showed that coastal management of Gunungkidul Regency involved three key stakeholders, six primary stakeholders, and three supporting stakeholders as a coordinator, facilitator, and implementer. Mapping stakeholders shows the categories of stakeholders involved in the management of coastal zones as subjects, players, actors, and spectator. Therefore, strategies are necessary to optimize stakeholder arrangements in realizing sustainable coastal area management through increasing collaboration and cooperation between subjects and players who have a level high of power and interest in coastal management policies. The sustainable coastal area management policies can be realized through effective collaboration and cooperation between government and community. The strategies must also involve all related parties to protect natural resources and environment, to concern with environment quality, and it increase the income of coastal communities.

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