scholarly journals Appraisal of Urban Sprawl in Mega Cities of Punjab Pakistan in context of Socio-Political Issues using RS/GIS.

2019 ◽  
Author(s):  
Memoona Zafar ◽  
Anam Sohail ◽  
Faiza Mehmood ◽  
Muhammad Musharaf ◽  
Jehanzaib Khan ◽  
...  
Keyword(s):  
Urban Sprawl ◽  
Primary Source ◽  
Temporal Variations ◽  
Law And Order ◽  
Human Settlements ◽  
Political Issues ◽  
Spatio Temporal ◽  
Landsat Satellite ◽  
Mega Cities

Urbanization has become a hot issue in context of environmental and socio-political scenarios which is addressed at every forum internationally. The mega cities are considered the main origin of socio-economic development which caused to emerge a number of issues like biodiversity, environmental degradation, resource consumption, implementation of law and order and provision of basic facilities to the general public. The area under investigation consists of Lahore, Gujranwala and Sheikhupura. The study site was bounded by 73-75 E longitudes and 31-33 N latitudes. We used Landsat satellite data to map Spatio-temporal variations in urban sprawl from 1990 to 2019 with a temporal window of 15 years. The Landsat data is free, highly reliable and considered as primary source. The classification results show that the total area of study site was site was 29355 km2 including 21933km2 were green index 4595 km2 was under human settlements and 2827 km2 was the waterbody in 1990. The classification of Landsat image of the year 2005 describes that area of human settlements was increased to 9366 km2, the volume of water body was reduced to 2111km2 and the vegetation was also degraded to 17878km2. Again, the urban area was computed using satellite imagery for the year 2019 which was 16105km2 in 2019. Kappa stat proved the accuracy of supervised classification what was around 87%. Remotely sensed datasets proved the reliability of Landsat satellite images for estimation of urban sprawl during last three decades.

scholarly journals Landscape Changes and Fragmentation Analysis in a Guinea Savannah Ecosystem: Case study of Talensi and Nabdam Districts of the Upper East region, Ghana

2016 ◽  
Vol 8 (1) ◽  
pp. 41 ◽  
Author(s):  
Steve Ampofo ◽  
Isaac Sackey ◽  
Boateng Ampadu
Keyword(s):  
Human Interaction ◽  
Northern Ghana ◽  
Landcover Change ◽  
East Region ◽  
Upper East Region ◽  
Spatio Temporal ◽  
Categorical Maps ◽  
Landsat Satellite

Landcover change is an observed natural change dynamics at both the local and regional levels. However, its scales are exacerbated by human interaction with its natural environment. The study examines these spatio-temporal changes in landcover and the level to which the change is accompanied by fragmentation of the identifiable cover types in the Talensi and Nabdam districts in Northern Ghana. The research uses digital classification of Landsat satellite imagery for 1999 and 2007 to produce the cover types which results in good accuracy levels of 66.39% and 63.03% respectively. Fragmentation analysis of the landscape was computed using FRAGSTATS® software for categorical maps obtained from the classified landcover maps for the two years. All cover types increased marginally. However, Bare areas decreased by as much as 17.17% and that of water decreased from 3% to 1%. The changing landscape involving conversions within and among various cover types is accompanied by fragmentation in all classes but more pronounced in the Bare class. The Bare class type which has more patches corresponds to the class with increased cover size and rather strangely decreases in the mean path size.

scholarly journals Spatio–Temporal Variations in Impervious Surface Patterns during Urban Expansion in a Coastal City: Xiamen, China

2019 ◽  
Vol 11 (8) ◽  
pp. 2404 ◽  
Author(s):  
Wang Man ◽  
Qin Nie ◽  
Lizhong Hua ◽  
Xuewen Wu ◽  
Hui Li
Keyword(s):  
Urban Sprawl ◽  
Urban Expansion ◽  
Temporal Variations ◽  
Environmental Indicator ◽  
Urban Centers ◽  
Southeastern China ◽  
Coastal City ◽  
Surface Patterns ◽  
Spatio Temporal ◽  
Land Surfaces

Impervious surfaces (IS) coverage is a quantifiable environmental indicator for understanding urban sprawl and its potential impacts on sustainability of urban ecological environments. Numerous studies have previously demonstrated global and regional IS variation, but little attention has been paid to the different internal and external patterns of IS development as urbanization progresses. This study estimates IS coverage in a subtropical coastal area of Xiamen, southeastern China, from Landsat TM/OLI images obtained in 1994, 2000, 2004, 2010, and 2015, and quantifies its spatio–temporal variations using IS change trajectories and radar graphs. During the study period, IS gradually expanded along the shoreline in a pattern resembling the shape of the bay. The land surfaces are classified into four zones: IS1 and IS2, dominated by cultivated land and forest; IS3, complex land use/coverage; and IS4, built-up areas. The progression and transformations of these zones highlight the main trends in IS changes in the study area. The trajectories of the zones form a layered structure in which the urban centers of each district progressively gain IS4, and transformations into IS3 and IS2 extend successively beyond the centers. The orientation of IS expansion in each of the six districts of Xiamen is revealed by radar graphs. The areas containing intermediate and high percentages IS each expanded in generally consistent directions throughout the study period, except in Tong’an district, which showed a change in the direction of expansion of its area of intermediate and high IS.

Spatio-temporal variations of winter wheat water requirement and climatic causes in Huang-Huai-Hai Farming Region

2012 ◽  
Vol 20 (3) ◽  
pp. 356-362 ◽  
Author(s):  
Xiao-Lin YANG ◽  
Zhen-Wei SONG ◽  
Hong WANG ◽  
Quan-Hong SHI ◽  
Fu CHEN ◽  
...  
Keyword(s):  
Winter Wheat ◽  
Temporal Variations ◽  
Water Requirement ◽  
Spatio Temporal

Extracting Spatio-temporal Feature for Classification of Event-related Potentials*

2011 ◽  
Vol 38 (9) ◽  
pp. 866-871 ◽  
Author(s):  
Zhi-Hua HUANG ◽  
Ming-Hong LI ◽  
Yuan-Ye MA ◽  
Chang-Le ZHOU
Keyword(s):  
Event Related Potentials ◽  
Related Potentials ◽  
Spatio Temporal ◽  
Temporal Feature

ASSESSMENT OF THE SPATIO-TEMPORAL VARIATIONS IN GROUND WATER STORAGE USING DOWN-SCALED GRACE DATA

2018 ◽  
Author(s):  
Hossein Sahour ◽  
◽  
Mohamed Sultan ◽  
Karem Abdelmohsen ◽  
Sita Karki ◽  
...  
Keyword(s):  
Ground Water ◽  
Water Storage ◽  
Temporal Variations ◽  
Grace Data ◽  
Spatio Temporal

The Significance of Abdullah Quilliam’s Literary Output

2017 ◽  
Author(s):  
Ron Geaves
Keyword(s):  
Foreign Policy ◽  
The West ◽  
Political Issues ◽  
Religious Worldview ◽  
British Foreign Policy ◽  
Conversion To Islam ◽  
British Muslims ◽  
Literary Output ◽  
Unique Status

This chapter discusses the significance of Abdullah Quilliam by primarily focusing on the writings through which he framed his conversion to Islam and wrote as a lens for Victorian society to revisit Islam. A classification of the types of writing undertaken and their role in the promotion of Islam within Britain and internationally in the late Victorian and Edwardian period is explored. Quilliam wrote extensively on the crisis facing Victorian Christianity and was intensely aware of the burning political issues of his time, especially those concerning British foreign policy. However, above all else, he was a Muslim of conviction, and the leader of British Muslims, and his unique status lies in his promotion of Islam in the West as a religious worldview disconnected from ethnicity or "otherness." This examination of his writings explores his vision of Islam and demonstrates that Quilliam’s concerns in his writings remain the essential themes drawn upon by young contemporary British Muslim activists and converts to the religion.

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