Spatial Heterogeneity of Urban Soils: The Case of the Beijing Metropolitan Region, China

Urban Ecology ◽  
2015 ◽  
pp. 53-74
Author(s):  
Qizheng Mao ◽  
Ganlin Huang ◽  
Alexander Buyantuev ◽  
Jianguo Wu ◽  
Shanghua Luo ◽  
...  
Keyword(s):  
Spatial Heterogeneity ◽  
Urban Soils ◽  
Metropolitan Region

scholarly journals Spatial heterogeneity of urban soils: the case of the Beijing metropolitan region, China

2014 ◽  
Vol 3 (1) ◽  
Author(s):  
Qizheng Mao ◽  
Ganlin Huang ◽  
Alexander Buyantuev ◽  
Jianguo Wu ◽  
Shanghua Luo ◽  
...  
Keyword(s):  
Spatial Heterogeneity ◽  
Urban Soils ◽  
Metropolitan Region

scholarly journals Urbanization and Climate Change: An Examination of Nonstationarities in Urban Flooding

2013 ◽  
Vol 14 (6) ◽  
pp. 1791-1809 ◽  
Author(s):  
Long Yang ◽  
James A. Smith ◽  
Daniel B. Wright ◽  
Mary Lynn Baeck ◽  
Gabriele Villarini ◽  
...  
Keyword(s):  
Climate Change ◽  
Spatial Heterogeneity ◽  
Surface Properties ◽  
River Basin ◽  
Land Surface ◽  
Heavy Rainfall ◽  
Metropolitan Region ◽  
Storm Event ◽  
Radar Rainfall ◽  
Study Region

Abstract The authors examine the hydroclimatology, hydrometeorology, and hydrology of flooding in the Milwaukee metropolitan region of the upper midwestern United States. The objectives of this study are 1) to assess nonstationarities in flood frequency associated with urban transformation of land surface properties and climate change and 2) to examine how spatial heterogeneity in land surface properties and heavy rainfall climatology interact to determine floods in urbanizing areas. The authors focus on the Menomonee River basin, which drains much of the urban core of Milwaukee, and the adjacent Cedar Creek basin, where agricultural land use dominates. Results are based on analyses of bias-corrected, high-resolution (1-km2 spatial resolution and 15-min time resolution) radar rainfall fields that are developed using the Hydro-NEXRAD system, rainfall observations from a network of 21 rain gauges in the Milwaukee metropolitan region, and discharge observations from 11 U.S. Geological Survey stream gauging stations. Both annual flood peak magnitudes and annual peaks over threshold flood counts have increased for the Menomonee River basin during the past five decades, and these trends are accompanied by a transition of flood events dominated by snowmelt (March–April floods) to a regime in which warm season thunderstorms are the dominant flood-producing agents. The frequency of heavy rainfall events has increased significantly. The spatial distribution of rainfall for flood-producing storms in the Milwaukee study region exhibits striking spatial heterogeneity, with a maximum in the central portion of the Menomonee River basin. Storm event hydrologic response is determined by the interactions of spatial patterns of urbanization and rainfall distribution in the Menomonee River basin.

scholarly journals Chemical characterization of urban park soils of the metropolitan region of São Paulo

2019 ◽  
Vol 7 (2A) ◽  
Author(s):  
Ana Maria Graciano Figueiredo
Keyword(s):  
Reference Values ◽  
Metal Contamination ◽  
Industrial Development ◽  
Urban Soils ◽  
Sao Paulo ◽  
Soil Samples ◽  
Metropolitan Region ◽  
São Paulo ◽  
Human Habitat ◽  
Metal Levels

In the last years, urban soils have been increasingly subject of investigations concerning their description and composition. In several important cities all over the world, urban soils show a significant increase in metal levels, due to the rise of pollution originated from continuous urbanization and industrial development. This metal contamination can disturb the natural geochemical cycles and their depending ecosystems. The expected population growth during the next decades will concentrate in urban areas, which are already the predominant human habitat. Metal contamination is a key issue in São Paulo City, the biggest urban agglomeration in Latin America. There has been little research on metal levels in São Paulo urban soils and almost nothing related to the city’s parks. The present study presents the concentration of major and trace elements in soil samples of nine parks of the metropolitan region of São Paulo. Top soil samples (0-20 cm) were collected in lines across the parks in order to have representative samples of the entire park. Instrumental Neutron Activation Analysis (INAA) and X-ray Fluorescence (XRF) were used for whole elemental analysis. The outcome of this study showed that the soils of the public parks studied presented, in general, concentration levels higher than the reference values for soils in São Paulo State. For As, V and Ni, which showed significant enrichment factors in relation to reference values, there is an indication of anthropogenic source. Cluster analysis grouped the elements Zn, Sb, Pb and Cu, well known as traffic-related elements, which may indicate a vehicular source.

Soil Spatial Heterogeneity and Systems of Agriculture

2015 ◽  
Vol 2 (1) ◽  
pp. 50-59
Author(s):  
V. Medvedev
Keyword(s):  
Spatial Heterogeneity ◽  
Soil Cover ◽  
Regular Grid ◽  
Resource Saving ◽  
The Third ◽  
Soil Spatial Heterogeneity ◽  
Agriculture Systems ◽  
Zonal Soils

Aim. To consider soil continuality and discreteness as features of heterogeneity manifestation in a soil cover, important for construction of agriculture systems. Methods. Geostatistical research of soil spatial heterogeneity, revealing the contours of a fi eld with various parameters of fertility. Results. The use of principles of precise agriculture and inspection of indicative properties of fi eld soils using a regular grid allowed to divide a fi eld into contours with three levels of fertility: the fi rst one is characterized by optimal or close to optimum properties which allows refusing from (or reducing substantially) tillage, introduction of fertilizers or chemical ameliorates; the second one has average parameters of fertility corresponding to zonal soils and demands the application of zonal technologies; the third one (with the worst parameters of fertility) presupposes regular use of the improved technologies. Conclusions. The introduction of precise agriculture will allow replacing a traditional zonal system with thenew which is soil-protecting and resource-saving one.

Exploring Subbordia – the impact of suburbanisation in cross-border metropolitan regions. The case study of Szczecin and its German hinterland

2018 ◽  
Vol 60 (1) ◽  
pp. 5-13 ◽  
Author(s):  
Martin Barthel ◽  
Ewelina Barthel
Keyword(s):  
Border Region ◽  
Metropolitan Region ◽  
Metropolitan Regions ◽  
Grass Roots ◽  
Planning Support ◽  
Cross Border ◽  
Connected Area ◽  
The Impact ◽  
Local Narratives

Abstract This paper focuses on the largely unexamined phenomenon of the developing trans-national suburban area west of Szczecin. Sadly the local communities in this functionally connected area struggle with national planning policies that are unsuitable for the region. The paper examines the impact of those processes on the border region in general and on the localities in particular. The paper investigates the consequences for local narratives and the cohesive development of the Euroregion and what position Polish and German communities took to develop the region, even without the necessary planning support. The region has succeeded in establishing grass-roots planning mechanisms which have helped to create a metropolitan-region working from the bottom up.

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