Landscape ecology: focus on spatio-temporal patterns.
Landscape ecology: monitoring landscape dynamics using spatial pattern metrics.
Bogaert, Jan ;
in Hong, S-K; Lee, J-A; Ihm, B-S (Eds.) et al Ecological Issues in a Changing World: Status, Response and Strategy (2004)Detailed reference viewed: 12 (2 ULg)
Landscape fragmentation assessment using a single measure.
Bogaert, Jan ; ; et al
in Wildlife Society Bulletin (2000), 28(4), 875-881Detailed reference viewed: 24 (2 ULg)
Landscape metrics for the evaluation of trend reliability in remote sensing imagery.
in Abstracts of the Second International SPOT/VEGETATION Users Conference (2004)Detailed reference viewed: 4 (0 ULg)
A landscape of agroecology from a francophone point of view
Stassart, Pierre M
Scientific conference (2013)Detailed reference viewed: 10 (2 ULg)
Landscape pattern analysis using independent pattern components and landscape transformation processes.
Poster (2004)Detailed reference viewed: 1 (0 ULg)
Landscape pattern analysis using independent pattern components and landscape transformation processes.
in The 19th Annual Symposium of the IALE US regional association. (2004)Detailed reference viewed: 4 (0 ULg)
Landscape quality and brownfield regeneration: a community investigation approach inspired by landscape preference studies
Ruelle, Christine ; Halleux, Jean-Marie ; Teller, Jacques
in Landscape Research (2012)Detailed reference viewed: 78 (19 ULg)
Landscape Quality Assessment: from place to utopia
Vanderheyden, Vincent ; Schmitz, Serge
Conference (2013, September 11)Detailed reference viewed: 11 (3 ULg)
Landscape research in Belgium
; ; Droeven, Emilie et al
in Belgeo (2004), 2-3
In the federal state Belgium, landscape research evolved from regional geographical monographs to more applied research that focuses upon the specific problems in each of the regions. In the highly ... [more ▼]
In the federal state Belgium, landscape research evolved from regional geographical monographs to more applied research that focuses upon the specific problems in each of the regions. In the highly urbanized Flanders region in the north, aspects of suburbanization and fragmentation are the most important. Landscape research involves geographers, historians, archaeologists, agronomists, foresters, ecologists and nature conservationists all dealing with specific goals and tasks. The integration is mainly achieved in spatial planning. In the Walloon region large areas are still rural and have a large forest cover, while urbanized zones are rather concentrated. Landscape research focuses here mainly upon the rural involving geographers, agronomists and planners. The natural and scenic aspects of the landscape dominate and the study of the historical development of the landscape is less pronounced. In Brussels Capital region little attention is given to landscape aspects, as social and typical urban problems dominate. Consequently, different landscape typologies are used in Belgium. [less ▲]Detailed reference viewed: 134 (16 ULg)
Landscape-level thresholds and newt conservation
Denoël, Mathieu ;
in Ecological Applications (2007), 17(1), 302-309
Ecological thresholds are defined as points or zones at which a rapid change occurs from one ecological condition to another. The existence of thresholds in species - habitat relationships has important ... [more ▼]
Ecological thresholds are defined as points or zones at which a rapid change occurs from one ecological condition to another. The existence of thresholds in species - habitat relationships has important implications for management, but the lack of concordance across studies and the wide range of methods used make generalizations difficult. We used two different statistical methods to test for the existence of thresholds for both individual species and the whole community, using three newt species as models. Based on a sample of 371 ponds, we found significant thresholds for both landscape configuration and composition. These were for the relationships between distance to forest and occurrence of Triturus alpestris and T. helveticus, and forest and crop cover and T. helveticus. Variability in the location of thresholds observed for the different species in this study caution against their use at the community level. Future studies should be based on the identification and assessment of thresholds for targeted species. Thresholds can be a useful concept from which tools may be developed to focus conservation effort for threatened species and their habitats. [less ▲]Detailed reference viewed: 171 (16 ULg)
Landslide detection from remote sensing images using statistical and ANN classification methods
; Havenith, Hans-Balder ; Pirard, Eric
in Geophysical Research Abstracts (2007)Detailed reference viewed: 4 (0 ULg)
Landslide detection methods and inventory analysis applied to the Tien Shan, Kyrgyz Republic
Havenith, Hans-Balder ; ;
in Geophysical Research Abstracts (2009)Detailed reference viewed: 4 (0 ULg)
Landslide Detection Methods, Inventory Analysis and Susceptibility Mapping Applied to the Tien Shan, Kyrgyz Republic.
; Havenith, Hans-Balder ; et al
in Proc. of the First World Landslide Forum (2008)
This paper presents results of the last five years of landslide detection and landslide susceptibility mapping in the Central and Southern Tien Shan. Landslide inventories have been compiled for areas of ... [more ▼]
This paper presents results of the last five years of landslide detection and landslide susceptibility mapping in the Central and Southern Tien Shan. Landslide inventories have been compiled for areas of major interest in the Kyrgyz Republic. For those areas, landslides were first mapped manually using KFA satellite images and aerial photographs. Recently, a landslide detection method has been developed in order to map landslides automatically. This method is based on a neural network scheme applied to detect particular slope failure features from remote sensing data. Multi-spectral and/or panchromatic ASTER and SPOT images as well as digital elevation models (DEMs) are used as inputs. This automatic method is designed to map medium-size mass movements (105-107 m3). This approach supplements the manual mapping of large slope failures and helps to complete the inventory of mass movements and related landslide susceptibility/hazard maps for large areas within the Tien Shan. Size-frequency analyses have been applied to the two existing regional landslide inventories. These size-frequency analyses revealed the incompleteness of the respective inventories (in the low-size domain) as well as regional and local differences due to natural and anthropogenic influences. To be able to perform reliable susceptibility and size-frequency analyses, the completed inventories need to be verified. At present, we perform local verification by manual mapping and control, but automatic verification methods are being developed. They will also allow us to determine the level of uncertainties. Ongoing research is focused on the propagation of uncertainties throughout the chain of processing. [less ▲]Detailed reference viewed: 152 (6 ULg)
Landslide risk analysis in the Mailuu-Suu valley (Kyrgyzstan) by means of remote sensing techniques
; Pirard, Eric ; et al
in Geophysical Research Abstracts (2005)
Landslide Susceptibility Zonation in case of deforestation in Northern Negros Natural Park (NNNP) - Philippines
Master's dissertation (2006)
The Philippines is one of the most severely deforested countries in Southeast Asia with around 7 percent remaining forest in 2005. Moreover, due to its geographic circumstances, it is one of the most ... [more ▼]
The Philippines is one of the most severely deforested countries in Southeast Asia with around 7 percent remaining forest in 2005. Moreover, due to its geographic circumstances, it is one of the most natural hazard prone countries in the world with frequent occurrence of earthquakes, volcanic eruptions and typhoons, resulting notably in an increasing occurrence of landslides and flash floods. This work focuses on the North Negros Island and especially the recently proclaimed Northern Negros Natural Park (NNNP) that is considered the largest remaining evergreen forest in Negros Island and one of the largest in the Central Philippines. Deforestation continues to be a threat for this forest. The fact that this forest is located in mountainous area and that, due to a very high land pressure, people always creep higher to cultivate the steep slopes of these mountains, increase the landslide susceptibility associated with this deforestation. As an answer to that situation, this research aimed two main objectives. In a first time a land cover map was produced through digital classification of a 2003 SPOT 5 satellite image focusing on attempt for forest types differentiation in NNNP. Given that conventional method using spectral characteristics of the image revealed to be unsuccessful for this differentiation, this was finally achieved with the use of elevation and the distance to river as classifiers. The land cover map produced has an overall accuracy of 89,2 %. In a second time, a Landslide Susceptibility Zonation (LSZ) model was designed and implemented in a Geographical Information System (GIS) environment. The nine selected landslide-controlling factors were built from raw data and then combined through Weighted Linear Combination (WLC).Two scenarios corresponding to a “stable forest scenario” and a “deforestation scenario” were modeled. The integration of the land cover map previously produced served successfully as the key factor that enabled to model the Landslide Susceptibility (LS) change due to potential deforestation in NNNP. A sensitivity analysis of the factors used for this modeling was realized by comparison with a “LSZ in case of deforestation” map based on the four main factors only (land cover, land cover change, slope and proximity to river). It appeared that, the LSZ model was not sensitive to the use of other factors than these four main ones. Finally, in order to give an idea of the reliability of the results, the LSZ maps were compared with a landslide inventory realized during the field survey in North Negros. Some limitations in the landslide inventory did not allow drawing pertinent conclusion from this comparison. In parallel and in order to evaluate the feasibility of integrating the land cover knowledge of local environmentalist into a GIS data base through field survey and 3D-GIS activity in a remote laboratory, a participatory 3D-GIS experience was attempted in Negros. Consistence of results between field and 3D-GIS laboratory experience validate this way of extracting land cover information, which could revealed useful for land cover identification of hardly accessible areas. [less ▲]Detailed reference viewed: 102 (18 ULg)
Landslide Susceptibility, Hazard and Risk Mapping in Mailuu-Suu, Kyrgyzstan
Torgoev, Almazbek ; Havenith, Hans-Balder
in Landslide Science and Practice (2013, October)Detailed reference viewed: 2 (0 ULg)
Landslides in the Mailuu-Suu Valley, Kyrgyzstan - Hazards and impacts
Havenith, Hans-Balder ; ; et al
in Landslides (2006), 3(2), 137-147
Mailuu-Suu is a former uranium mining area in Kyrgyzstan (Central Asia) at the northern border of the Fergana Basin. This region is particularly prone to landslide hazards and, during the last 50 years ... [more ▼]
Mailuu-Suu is a former uranium mining area in Kyrgyzstan (Central Asia) at the northern border of the Fergana Basin. This region is particularly prone to landslide hazards and, during the last 50 years, has experienced severe landslide disasters in the vicinity of numerous nuclear waste tailing dams. Due to its critical situation, the Mailuu-Suu region was and still is the target area for several risk assessment projects. This paper provides a brief review of previous studies, past landslide events and a discussion on possible future risk scenarios. Various aspects of landslide hazard and related impacts in the Mailuu-Suu Valley are analyzed in detail: landslide susceptibility, historical evolution of landslide activity, size-frequency relationship, river damming and flooding as well as impacts on inhabited areas and nuclear waste storage zones. The study was carried out with standard remote sensing tools for the processing of satellite imagery and the construction of digital elevation models (DEMs). The processed inputs were combined on a GIS platform with digital landslide distribution maps of 1962, 1977, and 2003, digitized geological and geographic maps, and information from landslide monitoring and geophysical investigation. As a result, various types of landslide susceptibility maps based on conditional analysis (CA) are presented as well as predictions of future landslide activity and related damming potential and their possible impact on the population. For some risk scenarios, remediation and prevention measures are suggested. [less ▲]Detailed reference viewed: 46 (1 ULg)