scholarly journals Urban landscape structure anatomy: Structure patterns and typology identification in the space-time of Setif City, Algeria

2022 ◽  
Author(s):  
Hocine Sami Belmahdi ◽  
Abderezak Djemili
Keyword(s):  
Landscape Structure ◽  
Urban Landscape ◽  
Space Time ◽  
Structure Patterns

scholarly journals Detecting Urban Landscape Factors Controlling Seasonal Land Surface Temperatures: From the Perspective of Urban Function Zones

2021 ◽  
Author(s):  
Tong Li ◽  
Ying Xu ◽  
Lei Yao
Keyword(s):  
Landscape Structure ◽  
Land Surface ◽  
Urban Landscape ◽  
Landscape Planning ◽  
Thermal Environment ◽  
Metropolitan Region ◽  
Biophysical Parameters ◽  
Landscape Factors ◽  
Urban Function ◽  
The Impact

Abstract Understanding of the impact on the thermal effect by urbanization is of great significance for urban thermal regulation, it is essential to determine the relationship between the urban heat island (UHI) effect and the complexities of urban function and landscape structure. For this purpose, we conducted a case research in the metropolitan region of Beijing, China, and >5000 urban blocks assigned with different urban function zones (UFZs) were identified as the basic spatial analysis units. Seasonal land surface temperature (LST) retrieved from remote sensing data were used to represent the UHI characteristics of the study area, and surface biophysical parameters, building forms, and landscape pattern metrics were selected as the urban landscape factors. Then, the effects of urban function and landscape structure on the UHI effect were examined by spatial regression models. The results indicated that: (1) Significant spatio-temporal heterogeneity of LST were found in the study area, and there was obvious temperature gradient with “working-living-resting” UFZs; (2) All the types of urban landscape factors showed significant contribution to seasonal LST, and sorted by surface biophysical factors > building forms > landscape factors. However, their contributions varied in different seasons; (3) The major contribute factors showed a certain difference due to the variation of urban function and landscape complexity. This study expands understanding on the complex relationship among urban landscape, function, and thermal environment, which could benefit urban landscape planning for UHI alleviation.

scholarly journals TRANSFORMATION OF URBAN LANDSCAPEIN LATGALE REGION ON CHANGE OF 20- 21 CENTURIES

2007 ◽  
Vol 1 ◽  
pp. 266
Author(s):  
Ivars Matisovs
Keyword(s):  
Land Use ◽  
Environmental Quality ◽  
Landscape Structure ◽  
Urban Landscape ◽  
Urban Transportation ◽  
Transportation System ◽  
Social Economics ◽  
Land Use Structure ◽  
Urban Settlements ◽  
Construction Works

The paper deals with transformation of urban landscape in the 2 cities and 12 towns of Latgale region on change of 20-21 centuries, in the period from 1990 to 2007. Article provides information about factors and social economics processes that have influence on urban landscape structure and quality. The paper have a look at changes of land use structure, demographical processes, urban environmental quality, dynamics of urban transportation system and intensity of construction works in the cities and towns of Latgale region. The results establish disparities between scopes and directions of urban landscape transformation among different ranks of urban settlements.

scholarly journals Landscape Transformations in Rapidly Developing Peri-urban Areas of Accra, Ghana: Results of 30 years

2019 ◽  
Vol 11 (1) ◽  
pp. 172-182 ◽  
Author(s):  
George Ashiagbor ◽  
Clifford Amoako ◽  
Stephen B. Asabere ◽  
Jonathan A. Quaye-Ballard
Keyword(s):  
Landscape Structure ◽  
Urban Areas ◽  
Urban Governance ◽  
Urban Landscape ◽  
Urban Expansion ◽  
Edge Density ◽  
Aggregation Index ◽  
Intensity Index ◽  
Landsat Satellite ◽  
Landscape Transformations

Abstract Beyond the loss of peri-urban agricultural and forested land as a result of built-up expansion, not much information exists on the changes in the structure of the peri-urban landscape in Ghana. The aim of this paper is to examine the extent to which urban expansion is driving changes in landscape structure of the peri-urban fringes of Accra. We submit that rapid peri-urbanisation will fragment the existing agricultural and forested landscape with consequent ecological, socio-economic and urban governance implications. Using Landsat satellite images for the years 1985, 1991, 2002 and 2015 the study area was classified into four land cover classes. The study adopted the use of Urban Intensity Index (UII) and the Annual Rate of Urbanization (R) as measures of urbanization. Edge density (ED), largest patch index (LPI) and Aggregation index (AI) were used as proxies to measure landscape structural transformations. The study reveals substantial reductions and fragmentation in agricultural lands, riverine and open forests, while there has been over 200 percent increase in built-up areas. Beyond these revelations in spatiotemporal changes in landscape structure, the paper points to the ecological implications of the changes, and three key socio-economic and urban governance implications.

scholarly journals Linking greenhouse gas emissions to urban landscape structure: the relevance of spatial and thematic resolutions of land use/cover data

2018 ◽  
Vol 33 (7) ◽  
pp. 1211-1224 ◽  
Author(s):  
Xia-li Luan ◽  
Alexander Buyantuev ◽  
Albert Hans Baur ◽  
Birgit Kleinschmit ◽  
Haijun Wang ◽  
...  
Keyword(s):  
Land Use ◽  
Greenhouse Gas Emissions ◽  
Greenhouse Gas ◽  
Landscape Structure ◽  
Urban Landscape ◽  
Gas Emissions

Multi-Scale Identification of Urban Landscape Structure Based on Two-Dimensional Wavelet Analysis: The Case of Metropolitan Beijing, China

2020 ◽  
Vol 43 ◽  
pp. 100832
Author(s):  
Dr. Qiong Wu ◽  
Jinxiang Tan ◽  
Fengxiang Guo ◽  
Hongqing Li ◽  
Shengbo Chen ◽  
...  
Keyword(s):  
Wavelet Analysis ◽  
Landscape Structure ◽  
Urban Landscape ◽  
Two Dimensional ◽  
Multi Scale ◽  
Beijing China

scholarly journals City climate and landscape structure shape pollinators, nectar and transported pollen along a gradient of urbanization

2021 ◽  
Author(s):  
Paolo Biella ◽  
Nicola Tommasi ◽  
Lorenzo Guzzetti ◽  
Emiliano Pioltelli ◽  
Massimo Labra ◽  
...  
Keyword(s):  
Landscape Structure ◽  
Urban Landscape ◽  
Urban Landscapes ◽  
Urbanization Gradient ◽  
Impervious Cover ◽  
Dna Metabarcoding ◽  
Environmental Transitions ◽  
Urbanized Areas ◽  
Harsh Climate ◽  
Temperature Seasonality

Urbanization gradients influence both landscape and climate and provide opportunity for understanding how species, especially plants and pollinators, respond to artificially driven environmental transitions. Here, we investigated several aspects of pollination along an urbanization gradient in landscape and climate. We quantified wild hoverfly and bee abundances with trapping, standing crop of nectar with spectrophotometer, and the pollen transported by flower-visitors with DNA-metabarcoding, in 40 independent sites from seminatural to built-up areas in Northern Italy. Linear and nonlinear relationships were detected along the urbanization gradient. Pollinator abundances increased until 22% of impervious surface, dropping by 34% after that, and it also decreased with green patch distance and urban park size. Thus, suburban landscapes host more pollinators than highly cemented or seminatural areas. Moreover, pollinators diminished by up to 45% in areas with low temperature seasonality: urbanized areas likely posing thermic stress. Furthermore, the sugar mass available in nectar increased by 91% with impervious cover, indicating that city nectars were less consumed or flowers more productive. Furthermore, the species richness of pollen decreased by 32% in highly urbanized areas, and with a high incidence of exotic plants, hinting for anthropized plant communities. Synthesis and applications: Urbanization influences pollinator abundances, nectar resources and transported pollen. Pollinators are negatively affected by a thermally harsh climate in highly urbanized areas with isolated green areas and large parks. Suburban landscapes demonstrated the highest pollinator presence. In the city core, flowers contained more nectary sugar, while pollinators collected pollen from a small number of plants, mainly exotic. These findings highlight the influence of urban landscape structure and climate on pollinators and plants, showing that cities are heterogenous realities. Patterns from this study will serve as basis for pollinator-friendly planning and management of urban landscapes.

scholarly journals Mapping historical landscape changes with the use of a space-time cube

2018 ◽  
Vol 1 ◽  
pp. 1-3
Author(s):  
Edyta P. Bogucka ◽  
Mathias Jahnke
Keyword(s):  
Landscape Structure ◽  
Space Time ◽  
Temporal Information ◽  
Landscape Changes ◽  
Map Projections ◽  
Historical Landscape ◽  
Spatio Temporal

In this contribution, we introduce geographic concepts in the humanities and present the results of a spacetime visualization of ancient buildings over the last centuries. The techniques and approaches used were based on cartographic research to visualize spatio-temporal information. As a case study, we applied cartographic styling techniques to a model of the Royal Castle in Warsaw and its different spatial elements, which were constructed and destroyed during their eventful history. In our case, the space-time cube approach seems to be the most suitable representation of this spatio-temporal information. Therefore, we digitized the different footprints of the castle during the ancient centuries as well as the landscape structure around, and annotated them with monarchies, epochs and time. During the digitization process, we had to cope with difficulties like sources in various scales and map projections, which resulted in varying accuracies. The results were stored in KML to support a wide variety of visualization platforms.

scholarly journals Landscape structure influences avian species diversity in tropical urban mosaics

2018 ◽  
Author(s):  
Trymore Muderere ◽  
Amon Murwira ◽  
Paradzayi Tagwireyi ◽  
Ngoni Chiweshe
Keyword(s):  
Species Diversity ◽  
Landscape Structure ◽  
Urban Areas ◽  
Urban Landscape ◽  
Bird Species ◽  
Landscape Fragmentation ◽  
Avian Species ◽  
Edge Density ◽  
Using Data ◽  
Shape Complexity

AbstractIn this study, we tested whether urban landscape structure influences avian species diversity using data for Harare, Zimbabwe. Initially, we quantified landscape structure using fragmentation indices derived from a 5m resolution SPOT 5 imagery. We collected bird species data through field-based observations of birds at 35 locations occurring in five land use/land cover types. We quantified avian species diversity using Barger-Parker, Menhinick and Simpson’s Indices. Regression analysis was used to determine the nature and strength of the relationships between avian species diversity and fragmentation indices. Results indicated that woodland specialist avian species are negatively associated with landscape fragmentation, while grassland specialist and generalist avian species positively responded to patch edge density, habitat patch size and shape complexity. Overall, our results suggest that changes in landscape structure due to expansion of built-up areas in tropical urban areas may influence avian species diversity.

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