Review of coastal Land Reclamation situation in the World

2016 ◽  
Vol 75 (sp1) ◽  
pp. 667-671 ◽  
Author(s):  
Mario Martín-Antón ◽  
Vicente Negro ◽  
José María del Campo ◽  
José Santos López-Gutiérrez ◽  
M. Dolores Esteban
Keyword(s):  
Land Reclamation ◽  
The World ◽  
Coastal Land

Consolidation of cement-treated sewage sludge using vertical drains

2005 ◽  
Vol 42 (2) ◽  
pp. 528-540 ◽  
Author(s):  
J Chu ◽  
M H Goi ◽  
T T Lim
Keyword(s):  
Sewage Sludge ◽  
Land Reclamation ◽  
Model Tests ◽  
Waste Materials ◽  
Test Results ◽  
Prefabricated Vertical Drains ◽  
Vertical Drains ◽  
Treated Sewage ◽  
The World

The disposal of sewage sludge and other waste materials has become a problem in many cities around the world. A study on the use of sewage sludge and other waste materials for land reclamation has been conducted. One of the methods studied is to dispose of the sludge after it has been mixed with binders or other waste materials and then to consolidate the mixture on site using surcharge and prefabricated vertical drains (PVDs). To study the consolidation behaviour of the sludge–binder mixtures around PVDs, model tests using a fully instrumented consolidation tank were conducted. Some of the test results are presented in this paper. The study shows that PVDs are effective in consolidating the sludge and binder mixtures, provided that the PVDs used can sustain large bending and resist corrosion by the chemicals in the sludge.Key words: consolidation, geoenvironmental, land reclamation, prefabricated vertical drains.

Assimilation in the U.S.

1988 ◽  
Vol 9 (1) ◽  
pp. 181-199
Author(s):  
Laurence Fuchs
Keyword(s):  
Nineteenth Century ◽  
Northern California ◽  
Early Nineteenth Century ◽  
Gold Leaf ◽  
The World ◽  
Sonoma County ◽  
Large Stretch ◽  
Coastal Land ◽  
The U.S

There is a large stretch of coastal land in Sonoma County, California, that belonged to the Kashaya Indians long before Russian traders came in the early nineteenth century to establish the settlement which is now called Fort Ross. Only about a dozen Kashaya families are left on a forty acre reservation approximately a half hour’s drive from the coast. On my way to it in April 1985, driving through magnificent hills in the thick, cool northern California fog along Tin Bard Road, I passed the enormous, resplendent temple of the Nyingma Buddhists, called Odiyan. The Nyingmas, under the leadership of a Tibetan monk, had obtained 650 acres on which to build their nearly completed temple of gold leaf, copper and beautiful California woods. Behind the high, locked fence which prevents visitors from entering without special permission, Odiyan would soon receive Buddhist disciplines from all over the world.

Experimental Coastal Land Reclamation: Qianhai as a Case Interpreted

2019 ◽  
Vol 35 (1) ◽  
pp. 51-61
Author(s):  
Lawrence W.C. Lai ◽  
K. W. Chau ◽  
Frank T. Lorne ◽  
Weisheng Lu
Keyword(s):  
Land Reclamation ◽  
Coastal Land

The Application of Costs and Benefits Analysis in Coastal Land-Reclamation

2012 ◽  
Vol 518-523 ◽  
pp. 5232-5237 ◽  
Author(s):  
Yue Yun He ◽  
Xiong Zhi Xue ◽  
Hao Kong
Keyword(s):  
Land Reclamation ◽  
Contingent Valuation Method ◽  
Shadow Price ◽  
Environmental Problems ◽  
Coastal Areas ◽  
Point Of View ◽  
Population Pressure ◽  
Reclaimed Land ◽  
Analysis System ◽  
Coastal Land

Today, the coastal areas of the world amounting to nearly 10% of the total world’s land area, supports nearly half of the world’s human population. This causes serious population pressure and environmental problems. To reduce the pressure of land scarcity, cities along the coastal land are now paying their attention to land reclamation. Although land reclamation results in significant benefits to the coastal cities, it simultaneously causes serious environmental problems. Therefore, satisfactory management of reclaimed land is a big challenge which governments are now facing. Based on economics, this article presents some economic means to efficiently manage coastal areas. Integrating the costs-benefits analysis and input-output table, this paper builds the “costs-benefits analysis system”, and provides the models of estimating the value of some main aspects of the costs. Through outcome consult method, shadow price, TCM (Travel Cost Method), CVM (Contingent Valuation Method) and other methods, one can appraise the ecological damage in monetary terms, which allows to transform questions of “yes” or “no” into questions of “more” or “less”, one can easily judge the feasibility of this project in terms of social benefits. Using this costs-benefits analysis system to assess the land reclamation in Gulei port, Zhangzhou, China, the outcome showed that the total costs were almost 3.4 times more than the benefits, meaning that it is really not beneficial to construct the project from economics point of view.

scholarly journals Assessment Of Water Quality And Bottom Supplies In The Bottom Of The Mekong River

2021 ◽  
Vol 12 (5) ◽  
pp. 181-187
Author(s):  
Glazunova Irina Viktorovna Et al.
Keyword(s):  
Heavy Metals ◽  
Water Quality ◽  
Sustainable Development ◽  
Adverse Effects ◽  
Land Reclamation ◽  
National Standards ◽  
Mekong River ◽  
Economic Activities ◽  
Main River ◽  
The World

The article presents the results of studies of the content of heavy metals in bottom sediments in the lower reaches of the Mekong River (3 estuaries in Ben Tre). The results of the content of heavy metals for 20 research sites were analyzed and compared with the national standards of Vietnam, which are used to assess the level of adverse effects on aquatic animals and river ecosystems, as well as with similar standards adopted in various countries of the world. When compared with the standards, the content of heavy metals in the study area (Ben Tre province) was quite high. The tributaries flowing into the main river also have a relatively high content of heavy metals, which proves that, in addition to pollution from the upper reaches of the river, socio-economic activities in the catchment, including land reclamation, also have a strong effect on the accumulation of heavy metals in channel sediments. In addition, the authors, comparing the content of heavy metals, both with the established standards of Vietnam and with the standards of some countries of the world, creating a basis for rational agriculture and sustainable development.

scholarly journals Coastal Land Reclamation: Implication towards development control system in West Malaysia

2016 ◽  
Vol 1 (1) ◽  
pp. 354
Author(s):  
Mohammad Yusup ◽  
Ahmad Fuzi Arshad ◽  
Yusfida Ayu Abdullah ◽  
Nor Syafa’ah Ishak
Keyword(s):  
Control System ◽  
Peer Review ◽  
State Government ◽  
Land Reclamation ◽  
Publishing House ◽  
Development Plan ◽  
Development Control ◽  
Reclamation Area ◽  
International Publishing ◽  
Coastal Land

It is apparent that the weakness in land reclamation development in Malacca includes the incapability of the existing laws in terms of guiding the delivery of development. Additionally, the lack of comprehensiveness of the present development plan causes the inefficiency of the planning procedures for development. The paper focuses on the power of planning authorities, related laws, as well as the development control instruments in relation with development within a reclamation area. This study will directly contribute to the efficiency administration and development control system to assist the State Government of Malacca towards systematic and efficient land reclamation developments.© 2016. The Authors. Published for AMER ABRA by e-International Publishing House, Ltd., UK. Peer–review under responsibility of AMER (Association of Malaysian Environment-Behaviour Researchers), ABRA (Association of Behavioural Researchers on Asians) and cE-Bs (Centre for Environment-Behaviour Studies, Faculty of Architecture, Planning & Surveying, Universiti Teknologi MARA, Malaysia.Keywords: Planning administration; development plan; development control; coastal land reclamation

Coastal zone dynamics - as a result of changes at the border of three environments

2021 ◽  
Author(s):  
Oleksii Batyrev ◽  
Olga Andrianova ◽  
Radomir Belevich ◽  
Michael Skipa
Keyword(s):  
Sea Level ◽  
Coastal Zone ◽  
Black Sea ◽  
World Ocean ◽  
The Black Sea ◽  
Western Coast ◽  
The World ◽  
The Mediterranean ◽  
The Impact ◽  
Coastal Land

<p>Coastal zone research is becoming increasingly important because the impact of climate change is most significant here. The state of coastal regions is determined by the variability in three contact media (geological, water, and air). Evaluation of level changes on the coasts of various parts of the World Ocean (the Mediterranean, Black, Baltic and North Seas, and the Atlantic coasts in Brazil and France) over a long period of time shows various fluctuations with an upward trend in recent decades.</p><p>To highlight the factors that determine the seashores' level fluctuations, three contact media parameters were considered on the example of the western part of the Black Sea. Calculations, analysis, and comparison of trends in the variability of hydrometeorological characteristics (air and water temperatures, precipitation, and river discharge) and sea level over a period of more than 100 years have been carried out.</p><p>To assess the intensity of fluctuations of the coastal land along the western coast of the Black Sea, the series of level heights were considered at 6 Ukrainian stations: Vylkove, Chornomorsk (Ilyichevsk), Odesa-port, port Yuzhne, Ochakiv and Sevastopol (partially used as a benchmark), at 2 stations on the Romanian coast: Constanta and Sulina, and 2 stations on the Bulgarian coast: Burgas and Varna. Estimates of the dynamics of the land for the stations of this region's coastal zone for more than a 100-year period are calculated, and it is shown in which way changes in sea level are a consequence of the processes occurring in the coastal land and at the bottom.</p><p>Comparison of the years with extreme fluctuations in the sea level with the years of the global El Niño phenomenon showed that one of the causes of the observed disturbances in the water and air environments is the distant manifestations of this phenomenon.</p><p>Level fluctuations, both in the Black Sea and in the World Ocean, are synchronous at low-frequency scales (their period is more than 5 years) since global climatic processes on our planet influence them; short-term fluctuations are distinguished by regional features and are created under the influence of local factors (tectonic, geophysical, hydrostatic, etc.).</p><p>Modeling and predicting changes in the coastal zone of various parts of the World Ocean requires continuation of systematic observations of sea-level fluctuations, hydrometeorological characteristics, and seismic conditions in regions with the longest data series; it's crucial for the Black Sea as well for the Mediterranean, Baltic, North Seas, and Atlantic shores.</p>

scholarly journals Assess Effectiveness of Salt Removal by a Subsurface Drainage with Bundled Crop Straws in Coastal Saline Soil Using HYDRUS-3D

Water ◽  
2019 ◽  
Vol 11 (5) ◽  
pp. 943 ◽  
Author(s):  
Peirong Lu ◽  
Zhanyu Zhang ◽  
Zhuping Sheng ◽  
Mingyi Huang ◽  
Zemin Zhang
Keyword(s):  
Removal Efficiency ◽  
Land Reclamation ◽  
Saline Soil ◽  
Subsurface Drainage ◽  
Design Parameters ◽  
Soil Leaching ◽  
High Investment ◽  
Soil Desalination ◽  
Salt Distribution ◽  
Coastal Land

The low permeability of soil and high investment of salt management pose great challenges for implementation of land reclamation in coastal areas. In this study, a temporary soil leaching system was tested in which bundled maize straw (straw drainage module, SDM) was operated as a subsurface drainage tube and diluted seawater was used for leaching. A preliminary field experiment was conducted in coastal soil-filled lysimeters to examine the system’s feasibility and a numerical model (HYDRUS-3D) based on field measured data was designed to simulate the entire leaching process. The simulation results showed that the soil water velocity and the non-uniformity of salt distribution were apparently enhanced in the region approaching the drain outlet. The mass balance information indicated that the amount of water drained with SDM accounts for 37.9–66.0% of the total amount of leaching water, and the mass of salt removal was about 1.7 times that of the salt input from the diluted seawater. Additional simulations were conducted to explore the impacts of the design parameters, including leaching amount, the salinity of leaching water, and the number of leaching events on the desalination performance of the leaching system. Such simulations showed that the salt removal efficiency and soil desalination rate both were negatively related to the seawater mixture rate but were positively associated with the amount of leaching water. Increasing the leaching times, the salt removal efficiency was gradually decreased in all treatments, but the soil desalination rate was decreased only in the treatments leached with less diluted seawater. Our results confirmed the feasibility of the SDM leaching system in soil desalination and lay a good foundation for this system application in initial reclamation of saline coastal land.

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