scholarly journals Spatial-temporal analysis of urban eco-environmental quality of an urban area using geo-spatial techniques: The case of Dhaka megacity, Bangladesh

2022 ◽  
Author(s):  
Mainuddin Patwary Muhammad ◽  
Rahman Mijanur ◽  
H. E. M. Browning Matthew
Keyword(s):  
Urban Area ◽  
Environmental Quality ◽  
Temporal Analysis ◽  
Spatial Temporal Analysis

scholarly journals Spatial-temporal analysis of urban environmental quality of Tehran, Iran

2021 ◽  
Vol 120 ◽  
pp. 106901
Author(s):  
Mohammad Javanbakht ◽  
Ali Darvishi Boloorani ◽  
Majid Kiavarz ◽  
Najmeh Neisany Samany ◽  
Lobat Zebardast ◽  
...  
Keyword(s):  
Environmental Quality ◽  
Temporal Analysis ◽  
Spatial Temporal Analysis

scholarly journals A Spatial-Temporal Analysis of the Effects of Households’ Land-use Behaviors on Soil Available Potassium in Cropland: A Case Study from Urban Peripheral Region in Northeast China

Land ◽  
2020 ◽  
Vol 9 (5) ◽  
pp. 160
Author(s):  
Hongbin Liu ◽  
Zhanli Sun ◽  
Xiaojuan Luo ◽  
Xiuru Dong ◽  
Mengyao Wu
Keyword(s):  
Land Use ◽  
Urban Area ◽  
Northeast China ◽  
Temporal Analysis ◽  
Peripheral Region ◽  
Kriging Interpolation ◽  
Gis Tools ◽  
Data Points ◽  
Spatial Temporal Analysis

Available potassium (AVK) in the soil of cropland is one of the most important factors determining soil quality and agricultural productivity. Thus, it is crucial to understand the variation of AVK and its influencing factors for sustaining soil fertility and mitigating land degradation. Farm households are the ultimate land users, and their land-use behaviors inevitably play an important role in the variation of AVK. This paper, therefore, aims to explore the effects of households’ land-use behaviors on soil AVK from spatial and temporal perspectives. Taking an urban peripheral region in Northeast China as the study area, we firstly use geostatistics (Kriging interpolation) and GIS tools to map out the spatial AVK distributions in 1980, 2000, and 2010, based on soil sampling data points, and then assess the impacts of land-use behaviors on AVK using econometric models. The results show that, although the AVK content in the study area has a largely downward trend over the 30 years, there are distinct trends in different stages. The disparity of trends can be attributed to the changes in households’ land-use behaviors over time. The spatial variation of AVK is also substantial and intriguing: the closer to the urban area, the greater the decline of soil AVK content, while the farther away from the urban area, the greater the rise of soil AVK content. This spatial disparity can too be largely explained by the obvious differences in households’ land-use behaviors in various regions.

scholarly journals Regional Disparities in Urban Population Access to Sanitation Services.Case Study: Romania

2016 ◽  
Author(s):  
Florin Constantin MIHAI
Keyword(s):  
Waste Management ◽  
Urban Population ◽  
Temporal Analysis ◽  
Waste Collection ◽  
Urban Waste ◽  
Traditional System ◽  
Sanitation Services ◽  
Different Types ◽  
Spatial Temporal Analysis

Abstract: Sanitation services still not fully cover the urban populationand this leads to different types of pollution and affects the urbanlandscape. This paper aims a geographical approach by highlightingterritorial disparities in the Romanian counties regarding the urbanpopulation access to waste collection services and to examine theenvironmental issues. Statistical database processed by ascendinghierarchical cluster analysis are mapped at the level of Romanian countiesachieving a spatial-temporal analysis for the period 2003-2008. The paperalso discusses the current dysfunctions existing in urban waste managementfrom Romania. Development of waste management facilities is in the processof transition from a traditional system based only on landfilling towardsan integrated waste management system which develops the recycling andrecovery of waste generated. Romania as an EU member country must improvethe quality of sanitation services. Each city must provide the fullcollection of municipal waste generated in order to eliminate the illegaldumping.

scholarly journals REMOTE SENSING EVALUATION OF ECOLOGICAL ENVIRONMENT OF ANQING CITY BASED ON REMOTE SENSING ECOLOGICAL INDEX

2020 ◽  
Vol XLIII-B3-2020 ◽  
pp. 733-737
Author(s):  
X. Niu ◽  
Y. Li
Keyword(s):  
Remote Sensing ◽  
Urban Area ◽  
Environmental Quality ◽  
Ecological Environment ◽  
Mountainous Area ◽  
Ecological Change ◽  
Ecological Quality ◽  
Ecological Index ◽  
Use Of Resources

Abstract. Figuring out the regional ecological environment quality and ecological change is critical for ecological environment monitoring and management and urban construction planning. Based on the remote sensing ecological index (RESI), we evaluate the ecological quality and ecological change from 1999 to 2019 of Anqing city. Multi-temporal Landsat images are used to extract the four indicators of humidity, vegetation, heat and dryness, respectively. Then the RSEI is calculated by principal component analysis. The results show that the ecological quality of Anqing city declined from 1999 to 2019 and then grew slowly from 2009 to 2019. The eco-environmental quality of Anqing city dropped slightly from 1999 to 2019, and the regions with worse quality grades exceeded those becoming better. Particularly, we find that from 1999 to 2009, the area where the ecological quality became better made up 18.31% of the urban area, while the worse ecological area accounted for 29.68% of the urban area; from 2009 to 2019, the area of improved ecological environment reached 24.35%, while the area of degraded quality constituted 41.36%. Land-use changes dominated eco-environmental quality. The areas of poor eco-environmental quality expanded in residential regions and eco-environmental quality of mountainous area improved since returning cultivated land in steep hills into forest. The RSEI results are expected to provide a quantitative foundation for planning sustainable development and the rational use of resources in Anqing city.

scholarly journals Advances in Environmental Hydraulics

Water ◽  
2021 ◽  
Vol 13 (9) ◽  
pp. 1192
Author(s):  
Carlo Gualtieri ◽  
Dongdong Shao ◽  
Athanasios Angeloudis
Keyword(s):  
Environmental Quality ◽  
Natural Water ◽  
Environmental Water ◽  
Water Systems ◽  
Scientific Study ◽  
Environmental Hydraulics ◽  
Transport And Transformation ◽  
Water Flows ◽  
Transformation Processes

Environmental Hydraulics (EH) is the scientific study of environmental water flows and their related transport and transformation processes affecting the environmental quality of natural water systems, such as rivers, lakes, and aquifers, on our planet Earth [...]

Investigation of Coverage and Signal Quality of LoRaWAN Network in Urban Area

2020 ◽  
Author(s):  
Roni Apriantoro ◽  
Amin Suharjono ◽  
Kurnianingsih Kurnianingsih ◽  
I Ketut Agung Enriko
Keyword(s):  
Urban Area ◽  
Signal Quality
Sign in / Sign up

Export Citation Format

Share Document