Collection's Items (Sorted by Submit Date in Descending order): 1 to 20 of 484
- Conference Paper
Authors: Bao, Van Tuy; Tran, Quang Tho; Nguyen, The Kien (2019) - The impacts of climate changes and extreme weather events in recent years have destructive impacts on urban development. Climate change increases in the frequency and severity of floods, and as well aware, the impacts of flooding include loss of human life, damage to property, destruction of roads, schools, hospitals, markets, irrigation channels, dams, destruction of crops, loss of livestock and deterioration of health conditions due to waterborne diseases. As the consequence, all these effects will have severe damage to urban development. This paper recognized key aspects of urban that could be adversely affected by climate change, develop measures and standards for assessing the vu...
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- Conference Paper
Authors: Tran, Thien Cuong; Nguyen, Quoc Huan; Tran, Minh; Nguyen, Thinh An (2019) - The demand for electric power in Vietnam has increased over the past five years at annual growth rates of 10% to 12%, and the challenge is to promote renewable energy sector. One of these sustainable energy sources is to harness energy from the wind through wind turbines. However, a significant hindrance preventing the widespread use of wind turbines in Vietnam is the noise they produce, because noise significantly contributes to the annoyance experienced by residents living near wind farms. The prediction of noise impacts for new wind farms is one of the many aspects of the environmental impact assessment process in Vietnam. This paper deals with a predictive software approach for th...
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- Conference Paper
Authors: Tran, Thi Tuyen; Hoang, Thi Thuy (2019) - Flash flood hazards from heavy rainstorms are common in Hieu catchment (Nghe An province). This study presents a flash flood hazard assessment for Hieu catchment using the combination of Analytic Hierarchy Process (AHP) and Geographic Information System (GIS). A total of seven parameters to control flash flood occurrence were calculated using AHP and overlaid in GIS. Flash flood risk hazard map of Hieu catchment is divided into 5 risk levels: very high (2.01%), high (20.32%), medium (43.78%), low (30.59%), very low (3.3%). A hazard map was produced to help local authorities implement land use planning that reflects the hazards, and prepare to increase disaster response capacity human ...
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- Conference Paper
Authors: Phan, Anh Hang; Le, Van Thang; Tran, Anh Tuan; Nguyen, Hoang Son (2019) - Based on the natural, socio-economic and environmental characteristics, Thua Thien Hue province is divided into 6 environmental regions. They included of the environmental region of O Lau river basin, environmental areas of A Sap river basin and upstream of Dakrong river, the environmental region of Bo river basin, the environmental region of Huong river basin, and the environmental region of Truoi river basin and the environmental region of Bu Lu river basin. Each region was divided into 3 sub-regions corresponding to upstream, middle, and downstream river basins. The study results are considered scientific bases to propose solutions for socio-economic sustainable development for eac...
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- Conference Paper
Authors: Pham, Ha T.T. (2019) - Hai Phong, a coastal city in the Vietnam Red River Delta, is considered as one of the 10 most threatened cities by climate change in the world. This paper presents the impacts of climate change related to hazards and adaptation capacity of local communities of the An Duong district, Hai Phong city. The study deals with applying a combination of Delphi technique and the PSR (Pressure- State - Response) framework. The research established 18 questions and 18 statements were listed, indicating the PSR components. Delphi questionnaires allows identifying the consensus among the respondents of a stakeholder group with 40 panel members that involved in a two Round-Delphi process. The result...
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- Conference Paper
Authors: Pham, Thi Hang; Nguyen, Trong Doi; Bui, Thi Hien Dieu; Phan, Thi Thuy Le; Pham, Anh Vu (2019) - This paper deals with the status of land disputes mediation at grassroots organizations for ethnic minorities living in Van Canh district. Land disputes in Van Canh mountainous district are quite complicated, in which the proportion of disputes related to ethnic minorities is quite high, mainly due to disputes over forest land, rights boundary disputes. It originates from economic benefits and conflicts between between the ethnic minority households in the production and cultivation areas and the influence of religious and customary law on people's life. Analyzing the fact of land dispute reconciliation and studying customary laws and aspirations of local ethnic minorities are intergr...
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- Conference Paper
Authors: Pham, Thanh Long; Tran, Tuan Hoang; Nguyen, Phuong Dong (2019) - In recent years, urban flooding has caused significant impacts on people's activities, socio economic development, environmental pollution and traffic congestion in the Ho Chi Minh City. There are more and more extreme rain events in particular climate change context, along with the impacts of sea level rise on the tides that increase the water level of canals and rivers, flooding has been occurred heavily, even the roads without any rains. By using Mike flood model, intensity duration-frequency (IDF) curve is used for calculating the flooding level and time, taking the terrain, drainage system, sewer and the size of a culvert in accounting for Ho Chi Minh City, a pilot for district 1...
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- Conference Paper
Authors: Pham, Thanh Huy (2019) - The paper mentions the content of urban planning and sustainable development for Vietnamese coastal towns adapting to climate change. Using some methodologies of the research such as specialist method, method of investigation and assessment, etc. is order to summarize, investigate, and analyze several existing urban structures of these coastal towns in the context of climate change, then classifying these towns into some groups of urban characteristic in the research location like seafront towns, littoral towns and coastal mangrove towns with some different criteria. The paper also analyzes the impacts of climate change on urban structure and vice versa, integrating into sustainable u...
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- Conference Paper
Authors: Pham, Quy Nhan; Ta, Thi Thoang; Tran, Thanh Le; Pham, Thi Thu; Nguyen, The Chuyen (2019) - As the decline of the surface water source under climate change condition and human being activities results, groundwater became the most important source of water supply for Ninh Thuan province where known as one of the most arid region of Vietnam. The increasing of groundwater extraction and sea level rise brought about increasing in seawater intrusion which became the biggest concern for the groundwater resources of this coastal area, thus it is necessary to evaluate the saltwater intrusion vulnerability in aquifers for planning and sustainable exploitation of groundwater in the province. In this study, an overview of the previous fresh-saltwater interface studies and updated geoph...
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- Conference Paper
Authors: Duong, Nhat Long; Nguyen, Hoang Thanh; Nguyen, Vo Chau Ngan (2019) - This study aimed to testing a new method to improve fishpond water quality in the acid sulfate soil areas by using biogas slurry (BS). Two experiments were implemented onsite at the fishpond to test for quantity of biogas slurry applied and fish growing status. In the 1st experiment, treatment of 75%BS had water pH increased from 3.3 to 6.5 after 1.5 months; DO values and Chlorophyll-a concentrations were reasonably high (5.2 ppm and 143.05 μg/L). In the 2nd experiment, the daily weight gain of Snake-skin gouramy (0.002 g/day) in treatment 1 were significantly lower than that in treatment 2 (0.051 g/day) and treatment 3 (0.049 g/day); however, the survival rate and the fish yield of f...
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- Conference Paper
Authors: Nguyen, Truc Le; Nguyen, An Thinh; Nguyen, Thi Vinh Ha; Nguyen, Dinh Tien; Nguyen, Duc Lam; Nguyen, Van Hong; Nguyen, Tat Tuan; Luc, Hens (2019) - Population growth, economic development and changing consumption patterns in recent years have been influenced on water resource use efficiency (WRUE). Therefore determining drivers of WRUE requires interdisciplinary attentions including inter-sectoral and inter-regional water relationships in the economy. This paper identifies the efficiency of water resource use of the Dong Nai river basin using two-stage Data Envelopment Analysis (DEA) approach that is a combination of the regional water resource metabolic theory and the two-stage DEA model. The study results show that transforming the economic development and sewage treatment both in the individual households and industry sector h...
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- Conference Paper
Authors: Nguyen, Thi Vinh Ha (2019) - Fisheries are most affected by climate change. Yet studies on impact of climate change to fisheries in Vietnam are still limited. This paper uses production function with Autoregressive Distributed Lag (ARDL) regression and finds out that fishing productivity in Vietnam is negatively impacted by climate change. In the long run, if sea surface temperature increases by 1 oC, fishing productivity, as measured by catch per unit effort (CPUE), will decrease by 0.25 ton/CV. However, CPUE does not statistically significantly alter if there are changes in precipitation and number of storms
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- Conference Paper
Authors: Nguyen, Thi Thanh Huong; Luong, The Phuong (2019) - Stand volume is one of important attributes in forest management and quantification of forest resource value. This studies tested solutions to estimate forest stand volume for the large area using SPOT 5 data and field data. Firstly, the forests were stratified into four 4 strata using Maximum likelihood supervised classification methods based on SPOT5 and field data. A set of 111 sample plots was distributed in these four forest strata which represented for disturbed forests under different levels by human induced for tropical forest in Tuy Duc district of Daknong province. Within the sample plots, DBH and tree height were measured to calculate stand volume using equation of stand vo...
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- Conference Paper
Authors: Nguyen, Thi Phuong; Nguyen, An Thinh (2019) - Non-timber forest products (NTFPs) play an important role in rural livelihoods. Local people living in and around the protected forests depend on a variety of non-timber forest products to make a living and generate income. This paper gives an overview of the diversity of NTFPs in Hoang Lien - Van Ban Nature Reserve, focusing on medicinal plants and food. We collect data on NTFPs using through ethnobotanical inventory with semi-structural, free listing, and household socio-economic interviews. With the voucher collection, the interviews are supplemented with the voucher collection. It is hypothesized that there is no significant difference between the number of bamboo shoots and their...
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- Conference Paper
Authors: Nguyen, Huy Quoc; Chou, Tien Yin; Yeh, Mei Ling; Hoang, Van Thanh; Nguyen, Xuan Linh; Tong, Ai Huyen; Bui, Quang Thanh (2019) - Saltwater intrusion is a basic concern in many parts of Vietnam relative to long-term dependable water supplies. It affects many sides of human life and the ecosystem. Remote sensing is a useful tool for saltwater intrusion monitoring. In this study, we proposed an integrated approach to estimate EC (Electrical Conductivity) value from multi-temporal optical remote sensing data for monitoring saltwater intrusion of coastal zone in southern Vietnam. Multiple variable analysis was used to discover the relation between EC and different indices groups which were extracted from LANDSAT satellite images, including: original bands group, PCA (principle component analysis) group, brightness g...
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- Conference Paper
Authors: Nguyen, Manh Ha; Nguyen, Thanh Tuan; Hoang, Thi Huyen Ngoc; Bui, Quang Dung; Vu, Thi Thu Huong (2019) - Conflicts of agricultural land use and the problem of stabilizing specialized cropland areas for sustainable development of the mountainous economy can be improved through appropriate land assessment to identify potentials and limitations. A number of land assessment methods have been applied in Vietnam, each has its certain advantages and disadvantages when applied to each specific case. This study was conducted to compare and verify the results of two ALES and LSE methods in determining the appropriate area for orange trees and tea trees in Western Nghe An, Vietnam. 15 ecological criteria were used in assessing soil for orange cultivation and 10 criteria for evaluating land for tea ...
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- Conference Paper
Authors: Dang, Mai Nguyen; Tran, Anh Duong; Dang, Duc Thanh (2019) - Reasonable distribution of water for food and energy production is pivotal for economic development, environmental protection, and social equality, and this task is becoming more challenging. This is because the demand for water, food and energy has increased significantly recently due to population growth, higher standards of living, and industrialization, especially in developing countries like Vietnam. Agricultural activities in Vietnam account for about 20% of GDP, and the total freshwater consumption is up to approximately 70% for the irrigation of agricultural cultivation, making it the largest user of water. Food production and supply chain also consume about 20% of the total e...
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- Conference Paper
Authors: Mai, Van Chan; Nguyen, Hoang Son; Dao, Dinh Cham; Le, Van Tin; Phan, Anh Hang (2019) - The collection and transportation of domestic solid waste in Hue city in particular and other cities in Vietnam generally are still manually implemented, which requires a lot of manpower, costly operation but gets low economic efficiency and management difficulties in return. This article with the title of GIS application in optimizing the route of collecting and transporting domestic solid waste in Hue city aims to shorten the maximum distance of waste collection and transportation in order to reduce the number of waste trucks. From the research results, the number of daily trucks reduces by 7 from 20 trucks to 13 ones, which contributes to the dramatic reduction of collection and tr...
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- Conference Paper
Authors: Nguyen, Hoang Son; Dao, Dinh Cham; Phan, Anh Hang; Nguyen, Trong Quan; Le, Anh Toai (2019) - Due to its long coastline, Vietnam is regarded as one of the countries seriously affected by climate change. If the sea level rises by 1 meter, 40% of the Mekong Delta area, 10% of the Red River Delta area will be flooded, directly affecting 20-30 million people. Particularly, in Quang Tri province, the coastal area is the place where people mainly live on agriculture and they are at risk of being severely affected by climate change. With the application of GIS and remote sensing, evaluating the vulnerability of agricultural production activities in coastal communes in Quang Tri province becomes more effective. The research process has identified the Sensitivity Index (S - Sensitivity...
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- Conference Paper
Authors: Nguyen, Dinh Tien; Tran, Nhat Lam Duyen; Nguyen, An Thinh; Nguyen, Truc Le (2019) - Recent prolonged dry periods and lack of irrigation water have severely affected the productivity of coffee farms’ in the Central Highlands of Vietnam. This paper analyzes the efficiency of irrigation water use for Robusta coffee (Coffea canephora) in Lam Dong province. A Cobb-Douglas production function was used to determine coffee productivity’s response to the application of irrigation water and other production factors using data collected from 194 farmers while the Technical Efficiency (TE) and Irrigation Water Use Efficiency (IWUE) were analyzed using a Data Envelopment Analysis (DEA) model. The production function analysis using Cobb-Douglas shows that the volume of irrigation ...
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Collection's Items (Sorted by Submit Date in Descending order): 1 to 20 of 484
