Application of remote sensing and GIS technique to analyze the land-use change: the case of Phu Giao district, Binh Duong province

Abstract

Digital change detection is a helpful technique using multi-temporal satellite image for analyzing landscape exchange. The objective of this study is an attempt to assess the land-use changes in Phu Giao district, Binh Duong province, Vietnam in the period of fifteen years, from 2001 to 2015. Landsat Thematic Mapper (TM) image data files of years from 2001 to 2015 were collected on website of United States Geological Survey (USGS). Then, the images supervised were classified into five classes including perennial plant, annual plant, barren and urban land, and water body using Maximum Likelihood classification method in ENVI 4.7, and mapped using ArcGIS. The results show that during fifteen years, perennial land and urban land have been increased by 39.83% and 10.32%, while annual land and water body have been decreased by 1.37% and 5.35% accordingly, respectively.
 Phát hiện thay đổi số hóa là một kỹ thuật hiệu quả sử dụng hình ảnh vệ tinh đa thời gian cho phân tích thay đổi cảnh quan. Bài viết này là một sự cố gắng nhằm đánh giá sự thay đổi đất sử dụng ở huyện Phú Giáo, tỉnh Bình Dương, Việt Nam trong khoảng thời gian mười lăm năm từ năm 2001 đến năm 2015. Các file dữ liệu ảnh Landsat TM của các năm từ 2001 đến 2015 đã được thu thập trên trang web nghiên cứu Địa chất Hoa Kỳ (USGS). Sau đó, các hình ảnh giám sát được phân thành năm lớp bao gồm cả cây trồng lâu năm, cây trồng hàng năm, đất đô thị cằn cỗi và vùng nước sử dụng phương pháp phân loại Maximum Likelihood trong ENVI 4.7, và lập bản đồ bằng sử dụng ArcGIS. Kết quả cho thấy rằng trong suốt mười lăm năm, diện tích đất trồng cây lâu năm, đất đô thị đã được tăng tương ứng là 39,83% và 10,32%, trong khi đất đai hàng năm và vùng nước giảm 1,37% và 5,35%.

Overweight and Obesity in 10-Year-Old Children in Danang City, Vietnam

“…Specifically, male subjects exhibited a significantly higher prevalence of overweight and obesity (46.9%) than female subjects (21.8%). Comparisons with other studies conducted in different regions show that the prevalence of overweight and obesity among 10-year-old schoolchildren in Hoavang is lower than the rates reported in Hanoi, Vietnam (2021), at 37.8%, 10 and Haiduong, Vietnam (2021), at 27.2%, 5 but higher than rates reported in Bacgiang, Vietnam (2021), at 18.0% 12 ; Nepal (2017) at 25.7% 13 ; Guangzhou, China (2015), at 18.2% 14 ; Uberaba, Brazil (2012-2013), at 32.3% 15 ; and Ivory Coast (2018) at 10.2% 16 . These results raise concerns regarding the alarming rise in childhood obesity within the Hoavang region.…”

“…2 Recent investigations conducted in Vietnam have unveiled a significant surge in the prevalence of overweight and obesity among school-aged children. [3][4][5] Childhood overweight and obesity carry profound implications for adulthood, with an array of comorbidities encompassing cardiovascular, digestive, renal, endocrine, dermatological, neurological, and orthopedic disorders. As the prevalence of overweight and obesity rises, so does the burden of these associated comorbidities.…”

“…It is worth noting that the proportion of overweight and obese children, particularly within the 6- to 11-year age range, has been consistently rising 2 . Recent investigations conducted in Vietnam have unveiled a significant surge in the prevalence of overweight and obesity among school-aged children 3–5 …”

Assessing Vegetation Cover Change Using Remote Sensing: Case Study at Binh Duong Province, Vietnam

“…The previous studies in Binh Duong Province reported that vegetation cover change has occurred recently due to the increase in urban areas [13] which causes negative impacts on ecosystems [14][15][16][17]. The study was conducted in Binh Duong Province by Thuy et al showed that some vegetation species are at risk of disappearing due to the reduction of their natural habitat caused by urbanization [17].…”

Time-series land cover and land use monitoring and classification using GIS and remote sensing technology

“…Along with Thu Dau Mot, there are some towns developed in the south, such as Lai Thieu, Bung, and Di An. This area had favourable conditions for urbanization and industrialization such as its location near Ho Chi Minh City, convenient rail, and road traffic, a long history of urban development, commercial activities and handicrafts, and dense population (Le 2019). Therefore, after re-establishing the province in 1997, the provincial government focused on urbanization and industrialization in the southern region, including Thu Dau Mot, Thuan An Third, the increasing urbanization rate of the province stems from industrialization.…”