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Full-Text Articles in Social and Behavioral Sciences

Evaluating Water Quality Variation In The Vietnamese Mekong Delta Area Using Cluster And Discriminant Analysis, Giao Thanh Nguyen, Thi Hong Nhien Huynh Jan 2021

Evaluating Water Quality Variation In The Vietnamese Mekong Delta Area Using Cluster And Discriminant Analysis, Giao Thanh Nguyen, Thi Hong Nhien Huynh

Applied Environmental Research

The study aims to assess spatial and temporal water quality variations in the upper reaches of the Vietnamese Mekong Delta. Thirty-one water monitoring samples of the two main rivers (Tien and Hau Rivers) and six canals flowing through An Giang Province were collected in thedry season (March) and the rainy season (September) from 2009 to 2019. Seven physicochemicalparameters were analyzed including temperature, pH, dissolved oxygen (DO), biochemical oxygendemand (BOD), total suspended solids (TSS), orthophosphate (P-PO43-), and coliforms. Water quality index (WQI), cluster analysis (CA), and discriminant analysis (DA) were applied to evaluate water quality, spatial and temporal variations, and seasonal …


Case Study Of Modular Pre-Cast Concrete On-Site Stormwater Detention System During Monsoon Season In Southeast Asia, Darren Y.S. Mah, Johnny O.K. Ngu, Rosmina A. Bustami, Frederik J. Putuhena Jan 2021

Case Study Of Modular Pre-Cast Concrete On-Site Stormwater Detention System During Monsoon Season In Southeast Asia, Darren Y.S. Mah, Johnny O.K. Ngu, Rosmina A. Bustami, Frederik J. Putuhena

Applied Environmental Research

On-site stormwater detention system within a residential property is meant for an environmental protection device that temporarily stores stormwater within the property lot to mitigate flash flood, particularly during rainy seasons brought by the northeast monsoon. A field test was constructed in a house's car porch with a 4.40 m x 4.70 m x 0.45 m tank filled with precast-concrete modular units with an effective storage volume of 3.97 m3. The system received water from a 95 m2 house roof via 0.1 m diameter pipe, discharged water via 0.05 m diameter pipe. It had recorded six observed storm events coincided …


Ecosystem Service Value Of The Mixed Land Use Pattern In Asia: Thailand's Experience, Nararuk Boonyanam, Somskaow Bejranonda Jan 2021

Ecosystem Service Value Of The Mixed Land Use Pattern In Asia: Thailand's Experience, Nararuk Boonyanam, Somskaow Bejranonda

Applied Environmental Research

The rapid increase in economic development and urbanisation along the Eastern Economic Corridor (EEC) of Thailand has accelerated the change in its ecosystem service value (ESV), leading to the demand for related analysis to ensure sustainable growth in the area. The aim of this study is to: (1) evaluate the land use change in Chonburi Province; the most urbanised city in the EEC of Thailand between 2006 and 2016, and (2) assess the land use change impact on ESV. Secondary data from land use maps for 2006 and 2016 was used to evaluate land use change and its impact on …


Effect Of Modified Septic Tank On Groundwater Quality Around Federal University Of Agriculture, Abeokuta, South-West Nigeria, Kofoworola Olatunde, Modupe Sarumi, Sadiq Abdulsalaam, Babatunde Bada, Funmilola Oyebanji Jan 2021

Effect Of Modified Septic Tank On Groundwater Quality Around Federal University Of Agriculture, Abeokuta, South-West Nigeria, Kofoworola Olatunde, Modupe Sarumi, Sadiq Abdulsalaam, Babatunde Bada, Funmilola Oyebanji

Applied Environmental Research

Groundwater forms a very important part of the water supply chain and its quality can be affected by improperly constructed septic tanks used by homeowners in peri-urban locations such as Abeokuta in recent times. Sixty groundwater samples collected from hand-dug wells ≤15m from septic tanks were analysed for physicochemical and bacteriological parameters using standard procedures. Results were integrated with multivariate and hydrogeochemical analyses to assess the effect improperly built septic tanks have on groundwater quality around the Federal University of Agriculture, Abeokuta. The range of values for the measured parameters include: pH (6.26 - 8.66), EC (83 - 1035 μS …


Change In Rainfall Patterns In The Hilly Region Of Uttarakhand Due To The Impact Of Climate Change, Dilip Kumar, Rajib K. Bhattacharjya Jan 2021

Change In Rainfall Patterns In The Hilly Region Of Uttarakhand Due To The Impact Of Climate Change, Dilip Kumar, Rajib K. Bhattacharjya

Applied Environmental Research

Uttarakhand, a Himalayan state of India, may experience an increase in temperature of 1.4°C to 5.8°C by 2100 due to global warming. The rise in temperature may melt the glaciers of the state and may have some significant impact on the rainfall. In this study, we have quantified the changes in the rainfall of the state. Also, an attempt has been made to evaluate the impact of climate change on rainfall. The future rainfall can be estimated by using a global circulation model (GCM). However, due to the very coarse spatial resolution of the different GCM, we cannot use them …


The Spatial Variability Of Soil Physical Properties Of Different Sized-Gap In A Subtropical Forest, China, Supaporn Buajan, Jinfu Liu, Zhongsheng He Jan 2021

The Spatial Variability Of Soil Physical Properties Of Different Sized-Gap In A Subtropical Forest, China, Supaporn Buajan, Jinfu Liu, Zhongsheng He

Applied Environmental Research

Gap areas create heterogeneity in the spatial environment, which is important to plant regeneration and diversity. Soil physical properties (SPP) are factors that affect plant growth. This study aims to assess the spatial variability of SPP in different gap sizes and to determine the effect of gap size on SPP. We used geostatistical analysis to illustrate the spatial patterns of SPP variability within 9 gaps, classified into three sizes (small, medium, and large) and under the canopy at the Castanopsis kawakamii natural reserve forest, the soil samples were collected entire gap area at 20 cm depth with the grid system …


Tourism Density Effect On Environmental Performance Index: Evidence In Asean Countries, Jain Yassin, Sarma Aralas, Danie E.K. Basa Jan 2021

Tourism Density Effect On Environmental Performance Index: Evidence In Asean Countries, Jain Yassin, Sarma Aralas, Danie E.K. Basa

Applied Environmental Research

The purpose of this current study is to assess the effect of tourism density on the environmentalperformance index on 10 ASEAN countries from 2002 to 2017. This study adopted panel data regressions with the Driscoll and Kraay standard. This method accounts for cross-sectionaldependence, heteroskedasticity, autocorrelation, and the possible correlation between countries when observing the environmental performance index and tourism density. Empirical results found a statistically significant and negative relationship between the tourism density index and the environmental performance index in 10 ASEAN countries. This result implied that an increasein the tourism density index will deteriorate the environmental performance index. The …