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Landslide susceptibility assessment in Limbe (SW Cameroon): A field calibrated seed cell and information value method

Journal Articles & Books
december, 2012

The dissected volcanic terrains around Limbe, SW Cameroon are frequently affected by small scale but destructive landslides. In this study, a raster-based data driven method involving seed cells is used to build a landslide susceptibility model for the Limbe area. Factors considered to be potential controls of slope failure within this area include slope gradient, rock type, distance from roads, slope orientation, mean annual precipitation, soil type, land cover type, stream density and distance from stream.

Subsidence map of underground mining influence for urban planning: an example from the Czech Republic

Journal Articles & Books
december, 2012
Czech Republic

The objective of this study is to produce a subsidence map linked to underground mining influence in a mining region. Ground subsidence represents the most important characteristic of a subsidence basin. However, ground subsidence itself does not carry information on geohazards by means of the impacts on the built-up area. Based on long-term experience and studies carried out, three basic subsidence intervals of varying influence were proposed.

adaptive efficiency of land use planning measured by the control of urban sprawl. The cases of the Netherlands, Belgium and Poland

Journal Articles & Books
december, 2012
Poland
Netherlands
Belgium

The paper aims to position the concept of adaptive efficiency in planning theory, by providing insights on the conditions that explain why land use planning in some institutional contexts is able to adapt and improve more efficiently than in others. This is done by focusing on a specific planning goal: the control of residential sprawl. The paper presents a theoretical framework based on two models, one on the coordinating mechanisms regarding the use of land and one to explain institutional changes.

Reformulation and assessment of the inventory approach to urban growth boundaries

Journal Articles & Books
december, 2012

Based on the theoretical framework, in this article we demonstrate how Decision Network can be used to formulate the inventory approach to urban growth boundaries (UGBs) as an application of the planning tool to a general case. In particular, in the inventory approach expansions of UGBs are considered as decision situations, land consumptions as problems, and order sizes of UGBs as solutions. We compare the time- and event-driven systems of the inventory control problem based on the decision network framework.

Impact of urbanization on flooding: The Thirusoolam sub watershed – A case study

Journal Articles & Books
december, 2012

The change in the land use pattern due to rapid urbanization adversely affects the hydrological processes in a catchment, leading to a deteriorating water environment. The increase in impervious areas disrupts the natural water balance. Reduced infiltration increases runoff and leads to higher flood peaks and volumes even for short duration low intensity rainfall. Due to their destructive effects, floods can significantly increase the expenses on mitigation efforts. The present study focuses on the Thirusoolam sub watershed, an urban watershed in Chennai.

Mapping seasonal trends in vegetation using AVHRR-NDVI time series in the Yucatán Peninsula, Mexico

Journal Articles & Books
december, 2012
Mexico

This research examines the spatio-temporal trends in Advanced Very High Resolution Radiometer (AVHRR) Global Inventory Modelling and Mapping Studies (GIMMS) normalized difference vegetation index (NDVI) time series to ascribe land use change and precipitation to observed changes in land cover from 1982 to 2007 in the Mexican Yucatán Peninsula, using seasonal trend analysis (STA).

evolution of two great Mediterranean Deltas: Remote sensing to visualize the evolution of habitats and land use in the Gediz and Rhone Deltas

Journal Articles & Books
december, 2012
Turkey
France

Land cover and land cover change, both in time and space, were analyzed in the Gediz Delta (Turkey) and the Rhone Delta (Camargue, France) to determine the evolution of two great deltas in the Mediterranean basin. Geographical Information Systems and remote sensing were used to estimate the impact of land use changes on habitats over a 35 year period from 1975 to 2010.

Modeling the radiation balance of different urban underlying surfaces

Journal Articles & Books
december, 2012

An urban net all-wave radiation parameterization scheme is evaluated using annual datasets for 2010 recorded at a Beijing urban observation site. The statistical relationship between observed data and simulation data of net radiation has a correlation coefficient of 0.98 and model efficiency of 0.93. Therefore, it can be used to simulate the radiation balance of Beijing. This study analyzes the variation in the radiation balance for different underlying surfaces. To simulate radiation balance differences, we set four pure land-cover types (forest, grass, roads, and buildings).

ES4LUCC: A GIS-tool for remotely monitoring landscape dynamics

Journal Articles & Books
december, 2012
Italy

Given the potential impacts of land cover changes on surface processes, accurate mapping of landscape dynamics is a crucial task in environmental monitoring. The use of commercial software for remote sensing of landscape changes requires appropriate expertise in sensor technology and computing resources that are not always available to decision makers. This paper presents the development of an experimental prototype of a lightweight and user-friendly GIS tool – ES4LUCC – a semiautomatic software for change detection and classification of land use/cover.

systematic quantitative review of urban tree benefits, costs, and assessment methods across cities in different climatic zones

Journal Articles & Books
december, 2012
Northern America

Urban trees can potentially mitigate environmental degradation accompanying rapid urbanisation via a range of tree benefits and services. But uncertainty exists about the extent of tree benefits and services because urban trees also impose costs (e.g. asthma) and may create hazards (e.g. windthrow). Few researchers have systematically assessed how urban tree benefits and costs vary across different cities, geographic scales and climates.

Integrated ecosystem model for simulating land use allocation

Journal Articles & Books
december, 2012
Taiwan

The impacts of human activities on the natural environment are becoming more and more pronounced. One of the most obvious areas of concern is land use and land cover change. As a result, projects such as Urbanization and Global Environmental Change (UGEC) launched by the International Human Dimension Programme on Global Environmental Change (IHDP) and the Global Land Project (GLP) jointly proposed by IHDP and IGBP were developed to study the interactions between human activities, land systems, and natural environmental change.

Assessing a riverfront rehabilitation project using the comprehensive index of public accessibility

Journal Articles & Books
december, 2012

Good urban riverfronts have both ecological and social benefits in urban planning and development. With rapid increase of urban stream rehabilitation projects in developing countries, the concept of Public Accessibility of Riverfront (PAR) has become a highlight in evaluating river ecosystem improvement. In this study the Comprehensive Index of Public Accessibility of Riverfront (CIPAR) that consists of 4 sub-indexes and 12 indicators is designed for assessing the conditions of PAR. The index system is novel for its combined consideration of riverfront accessibilities and benefits.