scholarly journals Environmental Vulnerability by Floods and Occupation of Permanent Preservation Area: An Approach about Three Cities of Midwest of Brazil

2017 ◽  
Vol 10 (2) ◽  
pp. 45
Author(s):  
Greyce Bernardes de Mello Rezende ◽  
Telma Lucia Bezerra Alves
Keyword(s):  
Urban Areas ◽  
Local Level ◽  
Urban Expansion ◽  
Google Earth ◽  
Satellite Imaging ◽  
Environmental Vulnerability ◽  
Industrial Buildings ◽  
Araguaia River ◽  
The Government ◽  
Very High

The purpose of this article is to identify the areas of environmental vulnerability by flooding in urban areas of the municipalities of Barra dos Garças - MT, Pontal do Araguaia - MT and Aragarças - GO; and demarcate the occupations in permanent preservation areas (PPAs) in the study area. The methodology uses variables such as time series of maximum quotas of the Araguaia River, from 1968 to 2014, the frequency of those floods, as well as the local level curves. From the junction of these data, it was stipulated the levels of environmental vulnerability by floods in five levels: very high, high, medium, low and very low. The results indicate that areas with very high vulnerability correspond to approximately 1,58 square kilometers which equals to 0.5% of the total area studied; the high vulnerability areas, have only 3.19 square kilometers, corresponding to 1% of the area; the medium vulnerability areas have 7.66 square kilometers, which corresponds to 2.41% of the area; low vulnerability areas, have 11.18 square kilometers of extension relating to 3.52% of the area; and finally the remainder of the study area was characterized as very low vulnerability. After this mapping, it was found by satellite imaging from Google earth software dated 2014, the main occupations in PPAs. The main uses and occupations refer to human activities related to tourism, as well as commercial, residential and industrial buildings. It was found that it is of salutary importance that the Government enforces the fulfillment of the restrictions set out in the Forest Code, preventing that more occupations occur in PPAs and areas subject to flooding. Moreover, the mapping of areas of flooding is also a tool for future public policies that aim to guide the recommended areas to urban expansion, as well as ordering the use and occupation of land by developing zoning.

Impact of Elected Women Representatives of Panchayati Raj in Physical and Financial and Business Assets Development of Rural Women: A Study among the Rural Women’s of Tiruvannamalai District, Tamil Nadu[1]

2017 ◽  
Vol 4 (24) ◽  
Author(s):  
Kalaichelvi Sivaraman ◽  
Rengasamy Stalin
Keyword(s):  
Rural Women ◽  
Rural Areas ◽  
Urban Areas ◽  
Direct Democracy ◽  
Tamil Nadu ◽  
Local Level ◽  
Rural And Urban Areas ◽  
The Government ◽  
The Impact ◽  
Panchayati Raj

This research paper is the part of Research Project entitled “Impact of Elected Women Representatives in the Life and Livelihood of the Women in Rural Areas: With Special Reference to Tiruvannamalai District, Tamil Nadu” funded by University of Madras under UGC-UPE Scheme.The 73rd and 74th amendments of the Constitution of India were made by the government to strengthen the position of women and to create a local-level legal foundation for direct democracy for women in both rural and urban areas. The representation for women in local bodies through reservation policies amendment in Constitution of India has stimulated the political participation of women in rural areas. However, when it’s comes to the argument of whether the women reservation in Panchayati Raj helps or benefits to the life and livelihood development of women as a group? The answer is hypothetical because the studies related to the impact of women representatives of Panchayati Raj in the life and livelihood development of women was very less. Therefore, to fill the gap in existing literature, the present study was conducted among the rural women of Tiruvannamalai district to assess the impact of elected women representatives in the physical and financial and business development of the women in rural areas. The findings revealed that during the last five years because of the women representation in their village Panjayati Raj, the Physical Asset of the rural women were increased or developed moderately (55.8%) and Highly (23.4%) and the Financial and Business Asset of the rural women were increased or developed moderately (60.4%) and Highly (18.7%).

Land Loss with Compensation: What Are the Determinants of Income Among Households in Central Vietnam?

2021 ◽  
Vol 12 (1) ◽  
pp. 40-55
Author(s):  
Nguyen Quang Phuc ◽  
A. C. M. (Guus) van Westen ◽  
Annelies Zoomers
Keyword(s):  
Household Income ◽  
Urban Areas ◽  
Urban Expansion ◽  
Skill Training ◽  
Land Loss ◽  
Central Vietnam ◽  
Compensation Packages ◽  
Household Members ◽  
The Government ◽  
Using Data

The purpose of this study is to investigate the determinants of household income following the loss of land owing to urban expansion in central Vietnam. Using data mainly from household surveys in the peri-urban areas of Hue city, the regression model indicates that demographic factors and livelihood strategy choices have important impacts on household income; financial compensation and support packages do not appear to be strong determinants of household income after the loss of land. This implies a failure of the current compensation programmes in the process of compulsory land acquisition, because the government believes that compensation packages make important contributions to livelihood reconstruction. This study suggests that investing in education and skill training for household members affected by land loss as well as assistance in converting compensation money into an adequate livelihood should be taken into consideration.

scholarly journals Characterizing the Spatial and Temporal Availability of Very High Resolution Satellite Imagery in Google Earth and Microsoft Bing Maps as a Source of Reference Data

Land ◽  
2018 ◽  
Vol 7 (4) ◽  
pp. 118 ◽  
Author(s):  
Myroslava Lesiv ◽  
Linda See ◽  
Juan Laso Bayas ◽  
Tobias Sturn ◽  
Dmitry Schepaschenko ◽  
...  
Keyword(s):  
High Resolution ◽  
Satellite Imagery ◽  
Urban Areas ◽  
Reference Data ◽  
Temporal Distribution ◽  
Google Earth ◽  
Training Data ◽  
Visual Interpretation ◽  
The Usa ◽  
Very High

Very high resolution (VHR) satellite imagery from Google Earth and Microsoft Bing Maps is increasingly being used in a variety of applications from computer sciences to arts and humanities. In the field of remote sensing, one use of this imagery is to create reference data sets through visual interpretation, e.g., to complement existing training data or to aid in the validation of land-cover products. Through new applications such as Collect Earth, this imagery is also being used for monitoring purposes in the form of statistical surveys obtained through visual interpretation. However, little is known about where VHR satellite imagery exists globally or the dates of the imagery. Here we present a global overview of the spatial and temporal distribution of VHR satellite imagery in Google Earth and Microsoft Bing Maps. The results show an uneven availability globally, with biases in certain areas such as the USA, Europe and India, and with clear discontinuities at political borders. We also show that the availability of VHR imagery is currently not adequate for monitoring protected areas and deforestation, but is better suited for monitoring changes in cropland or urban areas using visual interpretation.

scholarly journals Estimation of Building Heights and DEM Accuracy Assessment Using ICESat-2 Data Products

2021 ◽  
Vol 10 (1) ◽  
pp. 37
Author(s):  
Goddu Pavan Sai Goud ◽  
Ashutosh Bhardwaj
Keyword(s):  
Spatial Data ◽  
Rural Areas ◽  
Urban Areas ◽  
Accuracy Assessment ◽  
Urban Expansion ◽  
Population Expansion ◽  
Cost Effective ◽  
Absolute Error ◽  
Google Earth ◽  
Surface Geometry

The use of remote sensing for urban monitoring is a very reliable and cost-effective method for studying urban expansion in horizontal and vertical dimensions. The advantage of multi-temporal spatial data and high data accuracy is useful in mapping urban vertical aspects like the compactness of urban areas, population expansion, and urban surface geometry. This study makes use of the ‘Ice, cloud, and land elevation satellite-2′ (ICESat-2) ATL 03 photon data for building height estimation using a sample of 30 buildings in three experimental sites. A comparison of computed heights with the heights of the respective buildings from google image and google earth pro was done to assess the accuracy and the result of 2.04 m RMSE was obtained. Another popularly used method by planners and policymakers to map the vertical dimension of urban terrain is the Digital Elevation Model (DEM). An assessment of the openly available DEM products—TanDEM-X and Cartosat-1 has been done over Urban and Rural areas. TanDEM-X is a German earth observation satellite that uses InSAR (Synthetic Aperture Radar Interferometry) technique to acquire DEM while Cartosat-1 is an optical stereo acquisition satellite launched by the Indian Space Research Organization (ISRO) that uses photogrammetric techniques for DEM acquisition. Both the DEMs have been compared with ICESat-2 (ATL-08) Elevation data as the reference and the accuracy has been evaluated using Mean error (ME), Mean absolute error (MAE) and Root mean square error (RMSE). In the case of Greater Hyderabad Municipal Corporation (GHMC), RMSE values 5.29 m and 7.48 m were noted for TanDEM-X 90 and CartoDEM V3 R1 respectively. While the second site of Bellampalli Mandal rural area observed 5.15 and 5.48 RMSE values for the same respectively. Therefore, it was concluded that TanDEM-X has better accuracy as compared to the CartoDEM V3 R1.

scholarly journals Rank-size Distribution of Cities and Municipalities in Bangladesh

2020 ◽  
Vol 12 (11) ◽  
pp. 4643
Author(s):  
Pankaj Bajracharya ◽  
Salima Sultana
Keyword(s):  
Size Distribution ◽  
Urban Areas ◽  
Urban Expansion ◽  
Population Data ◽  
Google Earth ◽  
Zipf’S Law ◽  
Zipf's Law ◽  
Spatial Inequalities ◽  
Planning Framework ◽  
Shed Light

This paper examines and updates the rank-size distribution of cities and municipalities in Bangladesh between 1990 and 2019 based on two criteria: (1) built-up urban areas; and (2) population. The distribution of built-up urban areas and population are compared to provide a robust theoretical underpinning of Zipf’s law for future urban developmental planning framework. The data on built-up urban areas is extracted from land cover classification using Google Earth Engine and the population data is obtained from the decennial censuses. The comparison of the conformity to Zipf’s law indicated contradictory results. While a greater proportion of the population has been increasingly concentrated in the smaller and midsized cities over the last three decades, built-up urban areas, on the other hand, have been mostly clustered in two largest cities— Dhaka and Chittagong—accounting for 50 to nearly 60 percent of the total built-up urban areas. These results shed light on the magnitude of continued spatial inequalities in urban development amongst cities and municipalities in Bangladesh despite there being an overall increase of evenness in the distribution of population over time. These results imply an unsustainable rate of urban expansion in Bangladesh and reinforce the need for the exploration of policies and regulations targeted at guiding the rate and direction of evenness in urban expansion.

Mapping plastic greenhouses with satellite imagery in Valparaiso, Chile: development of a new methodology through data cloud platform

2021 ◽  
Author(s):  
Ignacio Aguirre ◽  
Javier Lozano-Parra
Keyword(s):  
Spatial Distribution ◽  
Rural Areas ◽  
Urban Areas ◽  
Vegetation Index ◽  
Central Valley ◽  
Google Earth ◽  
Strong Increase ◽  
Landsat 8 ◽  
Adverse Weather ◽  
The Government

<p>During the last decades, there has been a strong increase around the globe in the use of plastic greenhouses (PGs) which respond to the need to provide better water security, overcome adverse weather events, or elude pests. The central valley of Chile has not been an exception and the surface covered by greenhouses has also experienced an increase over the years. In the Valparaiso region, the surface increased from 1122 ha to 1180 ha throughout the decade 1997-2007. However, on one hand, there has not been a new PGs census since 2007 and, on the other hand, its spatial distribution has not ever been mapped. Considering that agriculture in this region employs more than 60000 people and moves 4% of regional GPD, this information should be available to be included in land planning and to be incorporated into hydrological, economic, and food security models. To overcome this, we propose a new method for monitoring the variations of the surface covered by PGs based on the intersection of normalized difference indexes and areas excludes by masks. For this, free Landsat 8 multi-temporal cloud-free images were used, from which five indexes were obtained (Modified Soil-adjusted Vegetation Index, Temperature Brightness Index, Normalized Difference Vegetation Index - Green, Normalized Difference Built-up Index, and Plastic Surface Index). These indexes were then reclassified in binary form and added up. Finally, urban areas and high slope zones were excluded to obtain the final output. This procedure was run in Google Earth Engine, which allowed easy replication and automation for longer time series or in other study sites. Results proved this methodology was able to successfully discriminate the 86% of PG, which suppose 1410 ha. This surface is consistent with the agricultural census developed in 2007 and with the increase of more than 900 subsidies granted by the government for installing PGs. Its performance also supports our confidence to discriminate PGs in areas with different land covers such as reservoirs, rural areas, open crops, bare soil, and roads. Future studies will allow us to estimate the surface of plastic greenhouses in Chile, mapping its spatial distribution in all the country, and monitor changes over time.</p>

scholarly journals Measuring the Urban Particulate Matter Island Effect with Rapid Urban Expansion

2020 ◽  
Vol 17 (15) ◽  
pp. 5535
Author(s):  
Yu Cao ◽  
Xiaoqian Fang ◽  
Jiayi Wang ◽  
Guoyu Li ◽  
Yu Cao ◽  
...  
Keyword(s):  
Particulate Matter ◽  
Urban Areas ◽  
Local Level ◽  
Urban Expansion ◽  
Rapid Expansion ◽  
Hangzhou Bay ◽  
Air Pollution Control ◽  
Rapid Urbanization ◽  
Urban Particulate Matter ◽  
Bay Area

Rapid urbanization has posed numerous negative impacts on the environment, including fine particulate matter (PM2.5) pollution. However, quantitative investigations of the PM2.5 concentration trends over an urban-rural gradient at the local level are still lacking. The urban particulate matter island (UPI) effect, representing the phenomenon that high particle concentrations in urban areas are gradually attenuated to surrounding areas, was adopted and modified in this paper to study the Hangzhou Bay area from 2000 to 2015. We found the following: (1) every urban area in the Hangzhou Bay area experienced rapid expansion, especially during 2000–2005; (2) more than half of the urban areas suffered UPI problems, and these urban areas had relatively high and stable UPI intensity (UPII) values, although the UPI footprint (UPIFP) values decreased with urban expansion; and (3) urban areas could be divided into three categories: plain areas, hilly areas and the junction of plains and hills, and the probability of the UPI effect varied significantly for different categories. This paper can compensate for the lack of research on the UPI effect at the local level and provide scientific evidence for air pollution control during urban agglomeration planning.

scholarly journals Assessing the Impacts of Expropriation and Compensation on Livelihood of Farmers: The Case of Peri-Urban Debre Markos, Ethiopia

Land ◽  
2021 ◽  
Vol 10 (6) ◽  
pp. 614
Author(s):  
Tilahun Dires ◽  
Derjew Fentie ◽  
Yeneneh Hunie ◽  
Worku Nega ◽  
Mulugeta Tenaw ◽  
...  
Keyword(s):  
Urban Areas ◽  
Qualitative Data ◽  
Urban Expansion ◽  
Group Discussions ◽  
Legal Documents ◽  
Fair Compensation ◽  
Debre Markos ◽  
The Government ◽  
Structured Questionnaire

In Ethiopia, expropriation and compensation measures have become a great concern due to horizontal urban expansion and development induced projects. Especially in peri-urban areas, the livelihood of farmers is affected by expropriation without fair and comparable compensation. This paper investigates the impacts of expropriation and compensation activities on livelihood of peri-urban smallholders taking Debre Markos Town as a case study area. Mixed research methods were employed. Quantitative data were gathered using a structured questionnaire and by interviewing about 100 smallholders. Qualitative data were collected in focus group discussions and by analyzing legal documents. The analysis showed a high trend of expropriation without fair and appropriate compensation as result of ignoring legal procedures of expropriation and compensation. Expropriated farmers also complained that they did not get any support from the government to use compensation money properly for further investments. Due to incomparable compensation and lack of advice, peri-urban farmers faced multi-faceted problems, such as food insecurity and social and family disintegration. The government has to enable families of expropriated households to earn suitable livelihood, which could be achieved by fair compensation and appropriate guidance.

scholarly journals Characterizing the Spatial and Temporal Availability of Very High Resolution Satellite Imagery for Monitoring Applications

2018 ◽  
Author(s):  
Myroslava Lesiv ◽  
Linda See ◽  
Juan Carlos Laso Bayas ◽  
Tobias Sturn ◽  
Dmitry Schepaschenko ◽  
...  
Keyword(s):  
High Resolution ◽  
Satellite Imagery ◽  
Urban Areas ◽  
Temporal Distribution ◽  
Google Earth ◽  
Arts And Humanities ◽  
The Usa ◽  
High Resolution Satellite Imagery ◽  
Land Cover Maps ◽  
Very High

Abstract. Very high resolution (VHR) satellite imagery from Google Earth and Bing Maps is increasingly being used in a variety of applications from computer sciences to arts and humanities. In the field of remote sensing, this imagery is used to create detailed time-sensitive maps, e.g. for emergency response purposes, or to validate coarser resolution products such as global land cover maps. However, little is known about where VHR satellite imagery exists globally or the dates of the imagery. Here we present a global snapshot of the spatial and temporal distribution of VHR satellite imagery in Google Earth and Bing Maps. The results show an uneven availability globally, with biases in certain areas such as the USA, Europe and India. We also show that the availability of VHR imagery is currently not adequate for monitoring protected areas and deforestation, but is better suited for monitoring changes in cropland or urban areas. Supplementary data are available at https://doi.org/10.1594/PANGAEA.885767.

scholarly journals Non-Motorized Transport (NMT) User Safety Guidelines in Urban Areas of Developing Countries

2019 ◽  
Vol 9 (2) ◽  
pp. 4436-4453
Keyword(s):  
Developing Countries ◽  
Urban Areas ◽  
Traffic Accidents ◽  
Road Traffic ◽  
Research Work ◽  
Google Earth ◽  
Safety Measures ◽  
The Government ◽  
Srinagar City ◽  
Motorized Transport

In Developing countries like India, analysis of safety issues on urban roads for Non-Motorized road traffic accidents in Indian cities (Srinagar city) where fatalities constitute approximately 25 % to 50% of the total traffic deaths is important. The NMT mainly comprises of pedestrians and bicyclists. The present study focusses on using video camera through image capture analysis and 13 different locations have been selected. The usage of latitude and longitude from google earth some of locations were selected in the CBD area of Srinagar city. The present study method is before study and after study location scenario (BSL-ASLS method) was used to identify necessary safety measures along the NMT lane with high traffic volumes on urban roads under mixed traffic conditions. The behavior of the NMT users plays a vital role in the characteristics of road accidents in Srinagar city. The final results clearly indicate that in the form of pie charts are shown at the end and there is a crucial need for providing a safe and separate lane for NMT (pedestrian and bicyclists) users in Srinagar city. The government should also develop a good policy/strategy regarding NMT and should provide a barrier in segregating the motorized and non-motorized traffic. There is a scope and need to carry out more research work in this area so as to improve the Non-motorized transport safety measures.

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