Nha Trang Bay is famous not only because of its beauty, but also of the biodiversity values, especially coral reefs. Thus, the sea water quality monitoring systems are necessary for effective and available managements...Nha Trang Bay is famous not only because of its beauty, but also of the biodiversity values, especially coral reefs. Thus, the sea water quality monitoring systems are necessary for effective and available managements to protect the ecosystems and for sustainable development. There have been several monitoring systems here but they have been done separately and unconnectedly. This research was done to take an overview and access the status and changes of water quality from 2007-2014. The data obtained rainy seasons over the years showed a quite good environment here. The environment changes were also monitored and there were some changes between seasons and over years, decreasing, increasing, or unobvious trends. However, the difference was not so much; and there was not the sign of environmental degradation in the bay from 2007 to 2014. Besides, the stoichiometric nutrients limitations were initially assessed. Since Si ratios here were always higher compared to N and P, there was not increased potential for non-diatom algal blooms. Together with the recorded nutrients concentration data, it can be said that there was no evidence of eutrophication in the bay. Although there was partial contamination of some parameters at few moments, the sea water quality of Nha Trang bay was still in a good condition （according to Vietnamese and ASEAN criteria）.展开更多
Based on the data collected at the Cau Da station, the Regional Ocean Modeling System (ROMS) is applied for hydrodynamics (e.g. circulation and temperature-salinity) in Binh Cang - Nha Trang Bay, Vietnam. The results ...Based on the data collected at the Cau Da station, the Regional Ocean Modeling System (ROMS) is applied for hydrodynamics (e.g. circulation and temperature-salinity) in Binh Cang - Nha Trang Bay, Vietnam. The results present the several cases of hydrodynamic regimes in the Bay during two mainly monsoon seasons (northeast and southwest monsoons). The clearly hydrodynamic regime occurs in the bay due to the impacts of rivers and monsoon conditions. These changes could be contributed to the hydrodynamic systems and water exchanges, that support basic scientific information for sustainable development of Binh Cang - Nha Trang bay.展开更多
Ho Chi Minh City(HCMC)has a high density of rivers and canals,so it is often strongly affected by high tides.The rapid urbanization process of a city with more than 13 million people,along with human activities with r...Ho Chi Minh City(HCMC)has a high density of rivers and canals,so it is often strongly affected by high tides.The rapid urbanization process of a city with more than 13 million people,along with human activities with rivers such as accretion,river encroachment,sand mining,construction of houses close to the riverbanks,...that stop the flow of rivers and canals,causes high tides to rise quickly and recede slowly,therefore difficult to control.The residential areas of people along the canals in the city are clearly affected by the phenomenon of high tides and it causes many difficulties to people’s lives,especially people living in Nha Be district-a southeast district of HCMC,where the terrain is low-lying,and also the water collection area of the whole city.This is an area that is expected to be flooded more and more heavily due to the increasingly strong impact of high tides.The inevitable consequence of the flooding-high tide phenomenon is that the living and business environment is not guaranteed,people’s life quality does not improve,and a part of the residents have to relocate.So,how to build a housing model that adapts to flooding/high tide in Nha Be District,HCMC against the impacts of high tides?This article is a qualitative study using mixed methods including Document Synthesis&Comparison,Questionnaire,Interview,and Observation methods.The investigation,survey,and assessment on the impact of high tides on housing in Nha Be District,HCMC was carried out in the year 2019-2020.This study aims to find out the experiences in building models of houses that can adapt to flood/high tide and their applicability to some types of houses in Nha Be District,HCMC.These solutions are aimed at improving the quality of life of people living along the canals of Nha Be District,HCMC and effectively contribute to sustainable socio-economic development.展开更多
文摘Nha Trang Bay is famous not only because of its beauty, but also of the biodiversity values, especially coral reefs. Thus, the sea water quality monitoring systems are necessary for effective and available managements to protect the ecosystems and for sustainable development. There have been several monitoring systems here but they have been done separately and unconnectedly. This research was done to take an overview and access the status and changes of water quality from 2007-2014. The data obtained rainy seasons over the years showed a quite good environment here. The environment changes were also monitored and there were some changes between seasons and over years, decreasing, increasing, or unobvious trends. However, the difference was not so much; and there was not the sign of environmental degradation in the bay from 2007 to 2014. Besides, the stoichiometric nutrients limitations were initially assessed. Since Si ratios here were always higher compared to N and P, there was not increased potential for non-diatom algal blooms. Together with the recorded nutrients concentration data, it can be said that there was no evidence of eutrophication in the bay. Although there was partial contamination of some parameters at few moments, the sea water quality of Nha Trang bay was still in a good condition （according to Vietnamese and ASEAN criteria）.
文摘Based on the data collected at the Cau Da station, the Regional Ocean Modeling System (ROMS) is applied for hydrodynamics (e.g. circulation and temperature-salinity) in Binh Cang - Nha Trang Bay, Vietnam. The results present the several cases of hydrodynamic regimes in the Bay during two mainly monsoon seasons (northeast and southwest monsoons). The clearly hydrodynamic regime occurs in the bay due to the impacts of rivers and monsoon conditions. These changes could be contributed to the hydrodynamic systems and water exchanges, that support basic scientific information for sustainable development of Binh Cang - Nha Trang bay.
基金Le-Minh Ngo,which was made possible by a 2018-2020 Ho Chi Minh City Department of Science and Technology Grant.Among the contributions,space design solutions were designed and illustrated by the master’s students of architecture,under the supervision of Le-Minh Ngo,in 2019-2020.
文摘Ho Chi Minh City(HCMC)has a high density of rivers and canals,so it is often strongly affected by high tides.The rapid urbanization process of a city with more than 13 million people,along with human activities with rivers such as accretion,river encroachment,sand mining,construction of houses close to the riverbanks,...that stop the flow of rivers and canals,causes high tides to rise quickly and recede slowly,therefore difficult to control.The residential areas of people along the canals in the city are clearly affected by the phenomenon of high tides and it causes many difficulties to people’s lives,especially people living in Nha Be district-a southeast district of HCMC,where the terrain is low-lying,and also the water collection area of the whole city.This is an area that is expected to be flooded more and more heavily due to the increasingly strong impact of high tides.The inevitable consequence of the flooding-high tide phenomenon is that the living and business environment is not guaranteed,people’s life quality does not improve,and a part of the residents have to relocate.So,how to build a housing model that adapts to flooding/high tide in Nha Be District,HCMC against the impacts of high tides?This article is a qualitative study using mixed methods including Document Synthesis&Comparison,Questionnaire,Interview,and Observation methods.The investigation,survey,and assessment on the impact of high tides on housing in Nha Be District,HCMC was carried out in the year 2019-2020.This study aims to find out the experiences in building models of houses that can adapt to flood/high tide and their applicability to some types of houses in Nha Be District,HCMC.These solutions are aimed at improving the quality of life of people living along the canals of Nha Be District,HCMC and effectively contribute to sustainable socio-economic development.
