The study focuses on the role of the local community in protecting and sustainably utilizing natural resources. The research aims to assess the level of community participation, the difficulties and challenges faced and propose appropriate solutions to enhance conservation effectiveness. The research methods include field surveys, in-depth interviews, and group discussions with residents and nature reserve management officials. The findings show that the community plays a crucial role in monitoring and protecting forests, sustainably exploiting resources, and transmitting indigenous knowledge. However, several challenges remain, such as inadequate awareness, livelihood pressures, and lack of governmental support. The study proposes solutions such as raising awareness, developing sustainable livelihoods, strengthening cooperation between the community and authorities, and applying technology in forest resource management.

The study employed MODIS satellite imagery to evaluate the ecological quality in the Mekong Delta in 2023. The PCA method was applied to calculate the Remote Sensing Ecological Index (RSEI) based on four parameters, including greenness (NDVI), wetness (WET), dryness (NDBSI), and heat (LST). The ecological quality in the Mekong Delta in 2023 was divided into five levels consist of poor, fair, moderate, good and excellent. More than 95% of the study area identified ecological quality ranging from moderate to good levels. The relationship between the ecological index and land-use types showed that forests exhibited the highest ecological quality next to triple-rice crops, perennial trees, double-rice crops, annual crops, rice shrimp and built-up areas. The findings provide a scientific foundation for developing sustainable land-use planning.

The study aims to determine the relationship between the current land use status and soil types, thereby establishing a soil map in Vinh Thuan district, Kien Giang province. The study collected documents, soil maps, Sentinel-2 remote sensing images; synthesized and processed; interpreted remote sensing images; determined the relationship between the current status and soil type; field inspection compared the reliability with 122 field survey points. The interpretation results determined that there are 07 types of the current status: construction works, shrimp rice, double-crop rice, clump rice, rice - color, perennial plants and aquaculture. The study determined the relationship of soil groups on each type of current status, including: Man-made land (Nt) - construction works; Active acid sulfate soil (Sj) - shrimp rice, double-crop rice, rice - color and aquaculture; Layered acid sulfate soil (Sv) - clump rice; Layered saline acid sulfate soil (SMv) - perennial plants with high correlation. The study established a soil map of Vinh Thuan district based on the relationship with an accuracy of 67.5%.

This study employed the Taguchi method to determine the influence of various factors on the color removal efficiency of textile wastewater. Zero-valent iron nanoparticles (nZVI) and a composite of nZVI on reduced graphene oxide (rGO/nZVI) were used as catalysts in the heterogeneous Fenton reaction. ANOVA analysis revealed that pH was the most significant factor, contributing 55,9% for nZVI and 92,4% for rGO/nZVI. Other factors, such as catalyst dosage and H₂O₂ concentration, also had an impact but to a lesser extent. Using a catalyst dosage of 1000 mg/L, H₂O₂ concentration of 1000 mg/L, pH 3, and a reaction time of 90 minutes, nZVI achieved a color removal efficiency of 84,2% in the first cycle, which dropped to 56,4% after six reuse cycles. Meanwhile, rGO/nZVI achieved an initial efficiency of 96,2% but declined to only 42,1% after six reuse cycles. The results demonstrate that the rGO/nZVI composite enhances color removal efficiency compared to standalone nZVI, although the reusability of the composite material still requires improvement.  

Air pollution caused by SO2 emissions from industrial activities is a major concern, significantly impacting human health and the environment. This study evaluates the efficiency of SO₂ removal using a wet scrubber, focusing on three key factors: packing layer height, the ratio of gas-liquid (L/G), and the type of absorption solution. The experiments were conducted under controlled conditions, with a gas stream temperature of 40 ± 1°C, pressure of 1 atm, and a specified inlet SO₂ concentration. The experiment results showed that the highest SO₂ removal efficiency (85.01 ± 1.19%) was achieved with a packing layer height of 0.7 m, an L/G ratio of 0.009, and a 0.05M NaOH solution. Findings indicate that these factors significantly affect SO₂ removal efficiency. To improve the technology of SO₂ removal from air pollution sources by the wet scrubber, further research conducted on other factors, such as packing material types, gas stream temperature, and pressure are necessary.

This article aims to determine the land suitability for agricultural cultivation types in Long My district as a basis for land use arrangement to serve the conversion of crop structure in the district. The method of land evaluation suitability in about physical and economy is implemented according to FAO (1976 and 2007). The results have identified ten physical land suitability zones, nine economic land suitability zones, and 13 physical combined with economic adaptation zones for seven land use types including double rice, double rice - fish, rice - shrimp, soursop, pomelo, pineapple and cash crops. On that basis, it has proposed to arrange nine agricultural production zones for Long My district. From the limiting factors for each production zone, the results have proposed solutions to improve the efficiency of agricultural production in the district for the future.

The study was conducted to assess the current status of plastic waste generation in rice cultivation in Phong Thanh Dong commune, Gia Rai town, Bac Lieu province, by field surveys and direct interviews with farmers. The research results showed that the amount of plastic waste is mainly generated from using fertilizers and pesticides with a volume of about 1288.7 g/1,000m2/crop (12.9 kg/ha/crop). The total amount of plastic waste generated from rice cultivation in Bac Lieu province is estimated at about 2,435 tons/crop. Most of the generated plastic waste is treated by burning (93.3%), collecting (33.3%), disposed of with household waste, or discharged directly in the fields (6.7%) and burying (3.3%). However, plastic waste management in rice cultivation has not been well implemented because the methods almost pose many environmental and human health risks. Local authorities and environmental management agencies need to promote the need for plastic waste management in agricultural production. Further research should focus o

This study aimed to assess the effects of salinity variation on the species composition of Cladocera in the Hau river estuary area.  Salinities and Cladocera samples were collected monthly from 07/2017 to 06/2018 during high tide and low tide at Cai Con, Dai Ngai and Tran De. These results showed that salinity on Hau River ranged from 0 to20‰, and salinity intrusion occurred strongly from 12/2017 to 04/2018. There were 12 species of Cladocera on Hau River, and its total density was 4,571-21,898 ind.m-3. Besides, regression results showed that the amount of appeared species and its density were negatively correlated with salinity. Moreover, in the range 0-2‰ of salinity, Cladocera thrived on Hau river. Saline intrusion had reduced the composition and density of the Cladocera in the Hau River estuarine.

This study investigates the adsorption capacity of lead ions (Pb) on two types of TiO2 nanomaterials, synthesized from the extracts of Phyllanthus urinaria (Phyllanthus urinaria) and lemongrass (Cymbopogon citratus) with Titanium isopropoxide using the sol-gel method. The experimental results show that TiO2@Cymbopogon citratus has better adsorption performance at pH 6, with an adsorption time of 120 minutes, a dosage of 0.01 g, and a Pb concentration of 50 mg/L. The adsorption kinetics follow the second-order and Elovich models. Adsorption process of TiO2@Cymbopogon citratus follows the Langmuir isotherm model (single-layer adsorption), while TiO2@Phyllanthus urinaria follows the Freundlich isotherm model (multi-layer adsorption). Moreover, the maximum adsorption capacity (qmax) of TiO2@Cymbopogon citratus (qmax = 467 mg/g) is higher than that of TiO2@Phyllanthus urinaria (qmax = 362.7 mg/g). The study concludes that plant-extracted combined with TiO2 are effective adsorbents for removing Pb in aqueous solution.

The study was conducted to assess the current status of generation and management and propose solutions for the management of electronic waste in households in Long My town and Vi Thuy district, Hau Giang province. Data collected from 180 households and 20 recycling collection facilities showed that the number of devices generated from 08 types of equipment was 750 units/year with a weight of 2,609 kg/year (average 3.97 kg/person/year), of which light bulb was the type of equipment with the highest generation rate but the shortest lifespan (3.3 years). Electronic waste management in the area still has many limitations since households mainly collect and process by themselves in the form of selling scrap (80%). In addition, the representative entities implementing management are manufacturers who have not yet deployed collection locations in the area. From there, a management solution for the area is proposed by establishing a collection and treatment model to comply with legal policies, contributing to achieving the recycling target as prescribed.

This study investigates the appropriate concentration of traditional fish compost applications on the growth and yield of green mustard (Brassica juncea L). The experiment used a completely randomized design with five treatments and three replications. Results indicate that varying concentrations of fish compost significantly impacted growth parameters 20 days after planting (harvest time). The 2.5 ml/L fish compost treatment produced the highest growth rates and considerably affected plant weight. The experiment‘s average yield of green mustard was 10.71 tons/ha, with an average marketable yield of 10.04 tons/ha and a marketable ratio of 93.64%. The average Brix value of the green mustard was 3.27%. In conclusion, the application of fish compost via foliar spray enhances growth and yield in green mustard cultivation without affecting the Brix value of the marketable produce.

This study was carried out to determine the pollution reduction ability of five ornamental species, including Cyperus alternifolius, Echinodorus cordifolius, Canna generalis, Heliconia psittacorum, Ruellia brittoniana, and unplanted (as control treatment). The plants were grown on the floating rafts at density of 27 plants/m2 for municipal wastewater treatment and were arranged in a completely randomized design with three replications each. The plants contribute to reducing nitrogen (N), phosphorus (P), chemical oxygen demand (COD) and to improving dissolved oxygen (DO) conditions in treated water after 7 days of treatment. However, the DO and COD content still did not meet the limit of QCVN 08:2023/BTNMT). The plants accumulated an additional 6.68 > 4.46 > 4.26 > 2.93 > 1.78 g N/tank (for C. generalis > C. alternifolius > E. cordifolius > R. brittoniana > H. psittacorum); and 0.21 > 0.20 > 0.18 > 0.10 > 0.07 g P/tank (for C. generalis > R. brittoniana > C. alternifolius > E. cordifolius > H. psittacorum). The five studied ornamental plants contribute to removing an average of 7.0-11.8% N and 4.0-9.3% P in the treatment system. C. generalis and C. alternifolius grow and develop well, helping to remove N and P in the treatment system, so they are the most potential and suitable species to grow on floating rafts to help improve water quality and create urban landscapes.

This study was conducted to examine the distribution of soil N:P ratios and its regulating factors based on soil properties (bulk density, water content, organic carbon content, and pHH2O) and stand factors (tree diameter at breast height and height, stand density, canopy closure, understory and litter biomass) from different ages of P. kesiya plantations (5, 11, 15, 25, and 35 years old) in Bao Lam Forestry Company, Lam Dong Province. The results showed that: (1) Soil N:P ratios at different soil depths decreased significantly with plantation age. Soil N:P ratios decreased significantly with increasing soil depth, and the highest N:P ratios were in the top 0–20 cm of soil. (2) Soil N:P ratios in P. kesiya forests were mainly explained by soil feature factors (bulk density and water content). (3) Stand feature factors (tree diameter at breast height and height, stand density, canopy closure, understory and litter biomass) also played an important role in contributing to the soil N:P ratio in P. kesiya forests. The results of this study contribute to a deeper understanding of the biogeochemical cycles and equilibrium mechanisms of N and P in soils.

The study aims to develop a spatial agricultural land use map in Tan Hung district, Long An province, by combining time series of Sentinel-2 and Sentinel-1 imagery. The Random Forest algorithm was employed to classify land use types on the Google Earth Engine (GEE) platform. The results identified ten land use types in the year 2023, including forest, double-rice crops, triple-rice crops, floating rice, short-term industrial crops (such as sesame), perennial crops, annual crops, aquaculture/water bodies, built-up land and rivers. The classification results were validated using 138 survey points, achieving an overall accuracy of 84.17% and a Kappa coefficient of 0.68. These findings provide essential data to assist managers in effectively monitoring agricultural land use, enhancing planning efforts, and guiding agricultural land utilization in climate change impacts nowadays.

The study aimed to evaluate the domestic wastewater treatment efficiency of a filtration column using expanded clay as the filter medium. Experiments were conducted on three filtration columns with operational parameters including a particle diameter of 5–10 mm, a flow rate of 7.07 L/h (filtration rate of 0.1 m/h), and water collection at heights of 0.4 m, 0.6 m, and 0.8 m. The results showed that the filter column packed with a thickness of 0.8 m expanded clay treated domestic wastewater to meet the national technical regulation on industrial wastewater QCVN 14:2008/BTNMT (type A), achieving treatment efficiencies for COD, BOD5, P-PO43-, N-NO3-, and N-NH4+ of 83.8%, 84.1%, 42.2%, 74.4%, and 30.4% respectively. Enzyme analysis results indicated that microbial activity was strongest in the upper layers of the material. The treatment efficiency slightly increased when the material layer thickness was increased. This study suggests that expanded clay can be applied as a biofilm carrier in biological filtration systems for wastewater treatment.

The study on fish species composition in the core zone and water intake sluices of the Tra Su Melaleuca Forest Landscape Protection Area was conducted over three sampling periods from 8-11/2023. Fish samples were directly collected using lift nets and traps. The study employed descriptive statistics and the biodiversity indices to compare species composition at the two sampling areas. The results showed that 36 fish species belonging to 17 families and 7 orders were identified at the intake sluices, primarily consisting of migratory species at the flood season. In contrast, only 14 fish species from 8 families and 4 orders were recorded in the core zone, with most being native species. The results also showed that the intake sluices had a richer fish biodiversity than the core area through the H‘, Dmg and Cd indices. The Sorensen similarity index revealed that only 8 fish species were present in both sampling areas (accounting for 19%). These findings reflect significant differences in fish species composition between the core zone and external water bodies of Tra Su, with native fish species being dominant in the core zone. These fish species are well adapted to closed water conditions.

The study was conducted to assess the vulnerability of agricultural production systems to saltwater intrusion in Soc Trang. Sentinel-1A satellite imagery was integrated with the Random Forest algorithm to classify land use. A survey of 100 farming households was conducted to evaluate vulnerability levels based on the IPCC framework. The classification results identified 10 agricultural land-use types. The vulnerability assessment indicated that double-cropped rice, triple-cropped rice, and annual crops are highly vulnerable. In contrast, the rice-shrimp system and perennial crops exhibit moderate and low vulnerability, respectively, due to their higher adaptive capacity for saline conditions. The findings provide essential scientific insights into the vulnerability of different farming systems to saltwater intrusion, serving as a foundation for developing targeted adaptation strategies and zoning measures to mitigate impacts at the local level.

The study utilizes high-resolution satellite imagery from Google Satellite and Planet Nicfi, combined with the Object-Based Image Analysis (OBIA) method and Support Vector Machine (SVM) algorithm to create a map of fruit tree distribution in Cho Lach District, Ben Tre Province in 2024. The classification results demonstrate high reliability, achieving an overall accuracy of 92.6% and a Kappa coefficient of 0.9. The spatial distribution of fruit trees shows that durian occupies the largest area, covering 5,388.9 ha (32.0% of the total natural area), followed by nursery plantations (19.6%), rambutan (11.9%) and coconut (7.4%). The research provides detailed information on the distribution of fruit trees in Cho Lach District, while also offering valuable data to support efficient land management and agricultural land-use planning, contributing significantly to the sustainable development of the agricultural sector in Ben Tre Province.

This study was carried out to calculate the total amount and change trend of Mekong River sediment flowing into the Mekong Delta between 2000 and 2023 by using sediment monitoring data from 2 Hydrological Stations: Tan Chau on the Tien river, and Chau Doc on the Hau River. To analyze trends, the study used the Mann-Kendall non-parametric test method, while Sen's Slope was used for estimating the degree of sediment variations with time. The total sediment load passing through Tan Chau and Chau Doc shows a rapid decreasing trend. Among these, the highest percentage change was recorded at -4.11% in June at Chau Doc and -3.23% in January at Tan Chau. The water discharge at Chau Doc has shown a significant decline, most notably in January, with a percentage change of -3.23%. Meanwhile, Tan Chau experienced a notable increase in water discharge in April, with a percentage change of 2.93%. The findings of this study can help environmental managers and those interested in the current sediment situation by providing a comprehensive picture of the Mekong River sediment situation.

This study aims to evaluates the groundwater quality in period of 2015- 2023, based on data from 38 monitoring wells in Ca Mau province. Statistical analysis was conducted to analyze the data and compare it with QCVN 09:2023/BTNMT standards on groundwater quality. Additionally, the study applied various water quality indices, including the Groundwater Quality Index (GWQI), Heavy Pollution Index (HPI), and Comprehensive Pollution Index (CPI), to assess the fluctuations in groundwater quality in Ca Mau province. The study found that groundwater quality in Ca Mau province fluctuated according to extraction layers and seasons with a general trend of improvement over time. Most water quality indicators were within the limits of QCVN 09:2023/BTNMT, except for N-NH4+ and total T.Coliform. The results of the GWQI, CPI, and HPI indices indicated that the groundwater quality in Ca Mau province remained within safe thresholds and was suitable for use.

This study assessed climate change trends in Kien Giang using rainfall data from 1979 to 2022 and temperature data from 1992 to 2022, analyzed on annual, seasonal, and monthly scales. Non-parametric methods, including the Mann–Kendall test, Sen’s Slope, Sequential Mann–Kendall (SMK), and Innovative Trend Analysis (ITA), were applied. The results revealed statistically significant increases in total dry-season rainfall, the number of rainy days during the dry season, and annual rainy days (p ≤ 0,05). In contrast, wet-season rainfall showed a slight but statistically insignificant decline. Rainfall in January increased notably (p = 0,024), reflecting a trend toward wetter drier seasons. Maximum temperature (Tmax) exhibited a slight decreasing trend, whereas minimum temperature (Tmin) increased significantly, particularly in the early months of the year, indicating a clear warming trend. Despite the slight decline in Tmax, the average temperature (Tavg) continued to rise. The findings confirmed the presence of climate change in Kien Giang, characterised by increasing dry-season rainfall and rising minimum temperatures. These changes emphasized the urgent need for adjustments in water resource management and the development of long-term climate adaptation strategies.

The study estimated greenhouse gas (GHG) emissions and analyzed the trade-offs in economic efficiency across different agricultural land-use models in Sóc Trăng province. The research methodology utilized Sentinel-1 satellite imagery to map the current cropping structure. It estimated GHG emission factors following the IPCC (2019) guidelines, followed by an economic efficiency analysis based on emission levels. The results indicated that the highest emission level was associated with the triple rice cropping system, reaching 7,566.36 kg CO₂e/ha/year. In contrast, the lowest emissions were observed in the single rice crop system at 2,324.99 kg CO₂e/ha/year. The economic trade-off analysis revealed that the triple rice cropping model had the highest emission intensity, with 83.41 kg CO₂e per million VND. In contrast, shallot cultivation had the lowest trade-off rate, with only 5.75 kg CO₂e per million VND. These findings provide essential insights into GHG emissions from different agricultural systems at the local level.