References of "Colinet, Gilles"
     in
Bookmark and Share    
Full Text
Peer Reviewed
See detailIntérêt des cartes des sols pour l'élaboration d'une stratégie d'échantillonnage en sols contaminés par retombées atmosphériques : application à l'étude de l'effet sol sur le devenir des éléments traces métalliques
Liénard, Amandine ULg; Bock, Laurent ULg; Colinet, Gilles ULg

in Biotechnologie, Agronomie, Société et Environnement = Biotechnology, Agronomy, Society and Environment [=BASE] (2011), 15(2), 669-682

As a result of pollution from atmospheric dusts, some sites of Wallonia (Belgium) are contaminated by metallic trace elements (MTE) such as cadmium, lead and zinc. These metalliferous soils are called ... [more ▼]

As a result of pollution from atmospheric dusts, some sites of Wallonia (Belgium) are contaminated by metallic trace elements (MTE) such as cadmium, lead and zinc. These metalliferous soils are called ‘calaminary sites’. The major aim of this study concerns the multi-scalar characterization of MTE distribution in these contaminated soils and landscapes. The strategy of sampling described in this paper is based on the influence of soil type and its land use on the fate of MTE. After analysis of collected samples, it will be possible to have an idea of the distribution of MTE among soil components, and therefore, to evaluate the risks caused by environmental changes such as an agricultural use of afforested areas. [less ▲]

Detailed reference viewed: 37 (9 ULg)
Full Text
See detailSoil, plant and goat faeces can be used to map trace elements contaminations in the town of Lubumbashi (RDCongo)
Mpundu, Michel; Mobinzo, Paul; Bindelle, Jérôme ULg et al

in The 6th International Conference on Soils of Urban, Industrial, Traffic, Mining and Military Areas: Program, Abstracts and participants directory (2011)

Detailed reference viewed: 39 (10 ULg)
Full Text
Peer Reviewed
See detailAvailability of Trace Elements for Chinese Cabbage Amended with Lime in a Periurban Market Garden in Yunnan Province, China
Zu, Yanqun; Bock, Laurent ULg; Schvartz, Christian et al

in Communications in Soil Science & Plant Analysis (2011)

Pot experiments were conducted in the laboratory with lime applications to decrease trace elements in Chinese cabbage produced on soils contaminated by trace ele- ments in the intensive periurban area in ... [more ▼]

Pot experiments were conducted in the laboratory with lime applications to decrease trace elements in Chinese cabbage produced on soils contaminated by trace ele- ments in the intensive periurban area in Chenggong County, Yunnan Province, China. Soil was an acidic loam developed from lacustrine-alluvial deposits. Results showed the following: (1) soil pH increased from 5.3 to 6.5, and acetic-acid-extractable trace-element contents and ratio of acetic-acid-extractable trace-element contents in treatments relative to those in the control (RRCT) decreased with increased rate of lime application. (2) Chinese cabbage more easily absorbed acetic-acid-extractable trace elements. Enrichment coefficients related to trace-element availability (AEC) of lead (Pb; mean: 3.3) and zinc (Zn; mean: 5.8) were stable, and the AEC of cadmium (Cd) was 1.8–2.0 with increased lime application rate. (3) Trace-element contents in Chinese cabbage decreased, and biomass of Chinese cabbage increased, with lime application rate. Trace-element contents in soil solution and acetic-acid-extractable trace-element contents can predict trace-element contents in Chinese cabbage, especially for soil solution. Lime quality and trace-element accumulation in Chinese cabbage should be taken into account when amendment is added to in situ soil contaminated with trace elements. [less ▲]

Detailed reference viewed: 46 (6 ULg)
Full Text
Peer Reviewed
See detailMay Rare Metallophytes Benefit from Disturbed Soils Following Mining Activity? The Case of the Crepidorhopalon tenuis in Katanga (D. R. Congo)
Faucon, Michel-Pierre; Parmentier, Ingrid; Colinet, Gilles ULg et al

in Restoration Ecology (2011), 19

Detailed reference viewed: 68 (23 ULg)
Full Text
Peer Reviewed
See detailSoil redistribution in rural catchment: how fifty years old soil survey can help model improvement
Legrain, Xavier ULg; Colard, François ULg; Colinet, Gilles ULg et al

in Geophysical Research Abstracts (2011), 13

In a context of high urbanization’s pressure in rural zones, landscape modelling of erosion opens interesting perspectives in land use planning. In most cases, validation data are the weak point. In this ... [more ▼]

In a context of high urbanization’s pressure in rural zones, landscape modelling of erosion opens interesting perspectives in land use planning. In most cases, validation data are the weak point. In this study, we present how fifty years old soil observations can help progressing towards a more accurate validation of such modelling in rural areas. As of 1947, a comprehensive systematic survey of the Belgian soil cover was initiated. Field observations were done every 75 meters by soil auger to a standard depth of 125cm (if possible). Map units were delineated on cadastral field survey maps at scale 1:5,000, based on auger observations and landscape context, then generalised on the 1:10,000 topographic base map for a publication at 1:20,000 scale. The legend of the map includes more than 6,000 different soil types and variants. More recently, the Walloon part of this map was digitalised to produce the Digital Soil Map of Wallonia (DSMW). A 10m resolution DEM was build up in 2009. Its RMSE is 0.8m. Soil erodibility and runoff production maps were derived at the same resolution. A land use map exists at 1:10,000 scale since 2005 and is updated yearly. We applied the USPED model (Unit Stream Power - based Erosion Deposition) (Moore and Burch, 1986) in a small watershed where first soil observations took place in 1956. New soil observations were done in 2010. The watershed is completely included in a cultivated area. The model was applied considering a transport capacity limitation proposed by Mitasova and Mitas (1996). Furthermore, we slightly modified it, in order to take into account recent advances in RUSLE factors computations like LS computation proposed by Desmet and Govers (1996) and Nearing (1997). The spatial distribution of erosion and deposition area produced by the model on the basis of the current DEM is consistent with a comparison between old and recent pedological observations. Furthermore, a comparison between horizons’ thickness in 1956 and 2010 gives spatially distributed quantitative information on erosion and deposition. Nevertheless, some uncertainties remain since the pedological descriptions are based on thickness classes, due to the variability of soil cartographical units, and since the current DEM is itself affected by an uncertainty on the elevation value. Future research will then focus on more accurate elevation data as starting point and then it will become conceivable to model the evolution of watershed elevation including land use and other local anthropogenic structures like hedgerows, ditches or grass strips. [less ▲]

Detailed reference viewed: 74 (24 ULg)
Full Text
Peer Reviewed
See detailFactors affecting trace element content in periurban market garden subsoil in Yunnan Province, China
Zu, Yanqun; Bock, Laurent ULg; Schvartz, Christian et al

in Journal of Environmental Sciences (China) (2011), 23(3), 488-496

Detailed reference viewed: 18 (3 ULg)
Full Text
Peer Reviewed
See detailRapid restoration of a species-rich ecosystem assessed from soil and vegetation indicators: the case of calcareous grasslands restored from forest stands
Piqueray, Julien ULg; Bottin, Gaëtan; Delescaille, Louis-Marie et al

in Ecological Indicators (2011), 11

Calcareous grasslands have long been recognized as biodiversity hotspots in Europe. However, in recent decades these ecosystems have seen rapid decline. In Belgium, more than 100 ha of calcareous ... [more ▼]

Calcareous grasslands have long been recognized as biodiversity hotspots in Europe. However, in recent decades these ecosystems have seen rapid decline. In Belgium, more than 100 ha of calcareous grasslands have been restored from oak coppices and pine forests since the 1990s. The aim of the present study was to provide a quantitative assessment of the success of these restoration efforts, using two sets of indicators: one related to soil conditions, the other related to vascular plant communities. Soil conditions were evaluated by comparing soil samples from pre-restoration forest stands, restored grasslands (3 age classes: 2-4 years; 5-8 years, 10-15 years) and reference grasslands. The analysis revealed no significant differences in soil N, P and K contents between pre-restoration forests and restored and reference grasslands. We observed a decrease in the mineralization rate indicators in both pre-restoration forests and recent grassland restorations, which was resorbed in older restorations. Floristic surveys revealed that plant species composition of older restorations was most like reference grasslands. However, some differences in species composition persisted after 15 years. Moreover, a few rare species did not colonise restored grasslands despite a close seed source. Non-recolonization by a set of species expected on calcareous grasslands may be due to dispersal limitation and higher cover by native invasive grasses in restored parcels. These results were discussed in term of implications for management. [less ▲]

Detailed reference viewed: 85 (38 ULg)
Full Text
See detailDélivrable 24 (A) : Rapport final de la convention A
Pereira, Benoît; Schneider, Arnaud; Titeux, Hugues et al

Report (2010)

Detailed reference viewed: 7 (1 ULg)
See detailEvaluation de la contamination de la chaïne trophique par les éléments traces (Cu, Co, Zn, Pb, Cd, U, V et As) dans le bassin de la Lufira supérieure (Katanga/RD Congo)
Katemo, Bauchet; Colinet, Gilles ULg; Andre, Luc et al

in Le secteur minier de la République démocratique du Congo à la croisée des chemins (2010, December)

Detailed reference viewed: 29 (3 ULg)
Full Text
See detailDe la Carte des Sols de la Belgique à la Carte Numérique des Sols de Wallonie : vers des Systèmes Régionaux d'Information sur les Sols et leurs propriétés
Legrain, Xavier ULg; Demarcin, Pierre ULg; Colinet, Gilles ULg et al

in Bulletin du groupe francophone humidimétrie et transferts en milieux poreux (2010, November 25), 56

Detailed reference viewed: 26 (10 ULg)
Full Text
See detailInfluence du type de sol et de son occupation sur la distribution des éléments traces métalliques entre les différents compartiments du sol : Stratégie et démarche d’échantillonnage
Lienard, Amandine ULg; Colinet, Gilles ULg

Poster (2010, November 24)

En Région wallonne, les sols contaminés en éléments traces métalliques (ETM) par retombées atmosphériques parsèment les anciennes régions industrielles du bassin sambro-mosan. C’est le cas du paysage ... [more ▼]

En Région wallonne, les sols contaminés en éléments traces métalliques (ETM) par retombées atmosphériques parsèment les anciennes régions industrielles du bassin sambro-mosan. C’est le cas du paysage entourant la réserve de Sclaigneaux (commune d’Andenne) connue pour ses pelouses calaminaires. Celles-ci trouvent leur origine dans les retombées de poussières contaminées provenant des cheminées d’évacuation d’une usine de zinc et plomb durant plus d’un siècle (1856 à 1978). Les cheminées, situées au sommet de la falaise sur la rive gauche de la Meuse, ont été détruites en 1982. Par cette étude, nous souhaitons observer la distribution des ETM dans les différents compartiments du sol et l’influence sur celle-ci du type de sol et de l’occupation du sol. La zone d’étude choisie est une maille circulaire de 3km de rayon centrée sur la zone des cheminées d’évacuation. Ce choix de maille permettra d’étudier l’offre en ETM du sol sur une distance constante dans toutes les directions. Elle est située dans le bassin hydrographique de la Meuse entre la Hesbaye, au nord, et le Condroz, au sud. Un plan d’échantillonnage stratifié par ordre d’importance des facteurs a été mis en place. Tout d’abord, une première sélection de sols a été opérée parmi les principaux types de sols répartis sur la zone sur base de l’ensemble de leur couverture cartographique. Les sols non cartographiés ou artificiels ainsi que les regroupements de complexes de sols pour lesquels les informations en notre possession sont insuffisantes ont ainsi été abandonnés. Une deuxième sélection porte sur les occupations de sols suivantes, cultures - prairies – forêts ; seuls six sols types de sols sont présents sous les trois occupations. Enfin, le choix final se porte sur les sols présents dans les quatre directions suivantes nord, est, ouest et sud. Au final, seulement trois unités de sols satisfont les exigences décrites ci-dessus. Les lieux d’échantillonnage sont répartis pour chaque combinaison sol-occupation sur les quatre directions. En tout, plus de 250 sondages seront réalisés sur cette zone d’environ 2.800ha pour optimiser la représentativité de l’échantillonnage. [less ▲]

Detailed reference viewed: 50 (12 ULg)
Full Text
See detailMéthodologie d’acquisition d’une collection d’échantillons de sols liés aux matériaux parentaux en Wallonie
Legrain, Xavier ULg; Renneson, Malorie ULg; Genot, Valérie ULg et al

Poster (2010, November 24)

Malgré l'exiguïté de son territoire, la Wallonie est dotée d’un contexte géologique particulièrement varié et contrasté. Des grandes géostructures aux formations lithostratigraphiques, cette diversité se ... [more ▼]

Malgré l'exiguïté de son territoire, la Wallonie est dotée d’un contexte géologique particulièrement varié et contrasté. Des grandes géostructures aux formations lithostratigraphiques, cette diversité se reflète au niveau des situations pédologiques rencontrées. En effet, l’altération des roches, à l’origine du matériau parental, constitue un des processus majeurs indispensables à la formation d’un sol. Par ailleurs, à travers sa nature et sa composition, ce matériau d’origine est reconnu comme un des facteurs prépondérants influençant la pédogenèse, et de ce fait, les propriétés des sols. Fort de ce constat, l’Unité de Science du Sol de Gembloux Agro-Bio Tech, à travers la collaboration de divers projets, a entrepris la collecte d’échantillons de sols, en relation avec les matériaux parentaux à l’origine de la majorité des sols présents en Wallonie. L’objectif poursuivi est (i) d’acquérir des données à caractère « permanent », intrinsèques à ces matériaux parentaux, afin d’en dégager une signature chimique, physico-chimique, physique et spectrale, et (ii) de mettre en évidence l’influence tant du matériau parental que de l’occupation du sol sur les propriétés des horizons de surface. L’originalité du travail réside en partie dans la stratégie d’échantillonnage, basée sur une stratification pédologique et géographique, par la prise en compte respectivement de la Carte des Principaux Types de Sols de Wallonie et des Unités de l’Espace Rural. Les choix opérés ont conduit à la sélection de 12 matériaux parentaux, chacun faisant l’objet de prélèvements en 10 points (surface et profondeur). La localisation précise de ces points a été déterminée sur base d’une analyse et de la confrontation de documents cartographiques existants, se rapportant essentiellement aux sigles pédologiques, aux formations lithostratigraphiques, au relief et à l’occupation des sols. Un total de 258 échantillons a ainsi été prélevé en 120 points (76 en culture, 15 en prairie temporaire et 29 en prairie permanente). Parmi les analyses déjà réalisées citons, outre le menu d’analyse classique en pédologie (pH H2O et KCl, carbonates, granulométrie, COT, CEC, …), la détermination des formes du phosphore (total, minéral, organique ou disponible), des teneurs totales en éléments traces métalliques, la mesure de paramètres physiques ou hydriques tels que les limites d’Atterberg ou les courbes pF, ainsi que diverses analyses par spectroscopie proche infrarouge. Parmi les mesures envisagées à l’avenir, citons des analyses minéralogiques et des mesures de stabilité structurale. [less ▲]

Detailed reference viewed: 35 (14 ULg)
Full Text
See detailDes outils d'aide à la décision pour un échantillonnage, un conseil agronomique et un conseil environnemental personnalisés
Genot, Valérie ULg; Cugnon, Thibaut; Buffet, Dominique et al

Conference (2010, November 24)

Detailed reference viewed: 40 (2 ULg)
Full Text
See detailEffect of parent materials and land use on soil phosphorus characteristics in Southern Belgium
Renneson, Malorie ULg; Dufey, Joseph; Bock, Laurent ULg et al

Conference (2010, September 29)

Detailed reference viewed: 14 (3 ULg)
Full Text
Peer Reviewed
See detailStudy of the relevance of phosphorus saturation in Walloon Region (Southern Belgium)
Renneson, Malorie ULg; Vandenberghe, Christophe ULg; Marcoen, Jean Marie ULg et al

in Gilkes, R. J.; Prakongkep, N. (Eds.) Proceedings of the 19th World Congress of Soil Science; Soil Solutions for a changing World (2010, August 03)

Detailed reference viewed: 36 (8 ULg)
Full Text
Peer Reviewed
See detailEffects of parental material and land use on soil phosphorus forms in Southern Belgium
Renneson, Malorie ULg; Dufey, Joseph; Bock, Laurent ULg et al

in Gilkes, RJ; Prakongkep, N (Eds.) Proceedings of the 19th World Congress of Soil Science; Soil Solutions for a changing World (2010, August 03)

Detailed reference viewed: 38 (13 ULg)
Full Text
Peer Reviewed
See detailPericopsis elata (Harms) Meeuwen in southeastern Cameroon: ecological and pedological approaches to improve the management of an endangered commercial timber species
Bourland, Nils ULg; Kouadio, Yao Lambert; Colinet, Gilles ULg et al

in International Forestry Review (2010), 12(5), 111

Pericopsis elata (gregarious Fabaceae), a moist semi-deciduous hardwood logged in Central African forests, is on the IUCN Red List and in CITES Appendix II. Our study evaluated its main ecological and ... [more ▼]

Pericopsis elata (gregarious Fabaceae), a moist semi-deciduous hardwood logged in Central African forests, is on the IUCN Red List and in CITES Appendix II. Our study evaluated its main ecological and pedological parameters in Cameroon. We obtained a mean diameter increment of 0.32 ± 0.04 cm.year–1. Minimum fertile and effective fruiting diameters were 32 and 35 cm, respectively. Flowering started in March-April, and fruits ripened over 7 months. Seed rain was studied in 1 × 45 m cleared corridors in each cardinal direction around 4 isolated mother trees. Indehiscent pods (average weight: 131.6 ± 10.1 cg) were dispersed mainly to the west: 86% of the variation of the number of collected fruits could be explained by the distance to the mother tree and the direction (GLM analysis, p < 0.001). The proportion of seeds eaten by insect larvae depended on the mother tree (10–95% – χ2 test, p < 0.001). Soils were compared at a regional scale: soils with P. elata contain higher levels of C (2.2 ± 0.5 SD- g.100g–1), Fe (261 ± 83 mg.kg–1), and P (33 ± 10 mg.kg–1), and were more acidic (pH 4.0 ± 0.2). A planting method in logging gaps is currently being tested taking into account physicochemical soil parameters [less ▲]

Detailed reference viewed: 71 (25 ULg)