La sectorisation des cours d'eau wallons de première catégorie

Poster (2007, October 10)

Mise en œuvre de la phase « interprétation » du Projet de Cartographie Numérique des Sols de Wallonie (PCNSW). Rapport final d’activités de la convention : version définitive du 7 mars 2007

Report (2007)

Vegetation diversity assessment in Southern Belgium's permanent forest inventory.

in Reynolds, K. M.; Thomson, A. J.; Köhl, M. (Eds.) et al Sustainable forestry: from monitoring and modelling to knowledgemanagement and policy science (2007)

Southern Belgium’s permanent forest inventory (IPRFW) has been running since February 1994. Its main objective is to identify and control the state and evolution of Wallonia’s forests. Because of the ... [more ▼]

Southern Belgium’s permanent forest inventory (IPRFW) has been running since February 1994. Its main objective is to identify and control the state and evolution of Wallonia’s forests. Because of the growing awareness of the importance of biodiversity and the potential ability of a national forest inventory to assess and monitor it (Köhl, 1996; Tomppo, 1996), since 1997 the inventory has been compiling exhaustive listings (relevés) of the vegetation present in each woodland-based field plot. The inventory was designed to use this floristic information to determine the forest type of each sample unit, characterizing its vegetation diversity and monitoring its evolution across the repeated measures of the inventory, normally taken every 10 years. The inventory’s current methodology for vegetation description is based on the well-known phytosociological relevé method of Braun-Blanquet. This chapter presents only a few examples of data processing results. Furthermore, several problems related to field operations and data processing are also analysed in order to enhance the next inventory cycle scheduled for 2008. The proposed methodological adjustments are designed in such a way that the data and results obtained are useful not only from the point of view of biodiversity, but also for everyday forest management practice. This chapter summarizes the current status of the regional forest inventory in Wallonia with respect to vegetation diversity issues and highlights the need for further methodological progress. [less ▲]

Sensibilité des essences aux changements prévisibles du climat, une recherche en cours à la FUSAGx

in Silva Belgica (2007), 114(6), 18-19

Le dépérissement de l'aulne en Wallonie (2ème partie) - Identification des symptômes et recommandations de gestion

in Silva Belgica (2007), 114(4), 24-29

La première partie de l’article, parue dans Silva Belgica n°3/2007, a été rédigé par les mêmes auteurs sous le titre : « Le dépérissement de l’aulne en Wallonie (1ère partie) ». Cette seconde partie ... [more ▼]

La première partie de l’article, parue dans Silva Belgica n°3/2007, a été rédigé par les mêmes auteurs sous le titre : « Le dépérissement de l’aulne en Wallonie (1ère partie) ». Cette seconde partie présente les symptômes et l’évolution du dépérissement de l’aulne, ainsi que les recommandations de gestion des cordons d’aulnes dépérissants. [less ▲]

La forêt wallonne, réalités, enjeux et prospective

in Bourdeau, P.; Zaccaï, E. (Eds.) The Millennium Ecosystem Assessment: Implications for Belgium - Proceedings of a Conference held in Brussels on 27 October 2006 (2007)

Parcellaire Forestier Informatisé

Poster (2006, July 31)

Cet outil a pour but de permettre aux propriétaires de parcelle(s) forestière(s) de déterminer un ou plusieurs objectifs de gestion et de les aider à élaborer un programme d'actions à entreprendre ... [more ▼]

Cet outil a pour but de permettre aux propriétaires de parcelle(s) forestière(s) de déterminer un ou plusieurs objectifs de gestion et de les aider à élaborer un programme d'actions à entreprendre (travaux et coupes) pour les rencontrer. [less ▲]

Un modèle de document simple de gestion (DSG) applicable en propriété forestière privée wallonne

Book (2006)

Most of the private forest owners don’t use a management plan especially in the case of woodlands scaterred in small compartments. Furthermore they generally miss documents compiling updated descriptive ... [more ▼]

Most of the private forest owners don’t use a management plan especially in the case of woodlands scaterred in small compartments. Furthermore they generally miss documents compiling updated descriptive information dealing with administrative data, stand and structure composition, ownership location, planning and control of silvicultural operations. A similar situation is observed as concerns maps and cartographic elements. The main objective of this paper is to present a simple information system based upon data easy to collect and suitable for a great number of forest properties whatever their sizes are. Informations from the forest are collected at the compartment’s level (planning unit defined by permanent boundaries) and are registered in a computerized data base so that any owner can make continuing use of information such as various repartitions (areas and species by age, by structure,..), digitized thematic maps (stand, soil, silvicultural operations,..). Such a system provided in option can be considered as a pragmatic decision support whose one of the main objectives is to assure the follow-up of compartments years after years. To support it, the setting up of a structure at a regional level should be very useful to the forest managers and also a way to better assist the private forest ownership in the frame of a regional forest policy taking attention to the general recommendations of sustainable management. [less ▲]

Bird Assemblages In A Mixed Woodland-Farmland Landscape: The Conservation Value Of Silviculture-Dependant Open Areas In Plantation Forest

in Forest Ecology & Management (2006), 227(1-2),

Although considered by some as a less "ecologically suitable" forestry model than "near-natural" stand management, even-aged plantation forest management, with regeneration procedure invo lving ... [more ▼]

Although considered by some as a less "ecologically suitable" forestry model than "near-natural" stand management, even-aged plantation forest management, with regeneration procedure invo lving clearcutting, creates temporary habitat for many early-successional birds. The present study addresses the question of the conservation value for birds of clearcutting-related open areas in European temperate forest, in the context of a mixed woodland-farmland landscape. The point count technique was used to census the breeding birds on 300 sampling p lots, distributed in the 8 main habitat types of the Ardenne region (Southern Belgium), including agricultural land, edge habitats, closed forest habitats and open areas in forest. Most of these open areas in forest derive from clearcutting practices, rapidly planted with young Norway Spruce (Picea abies). We quantified the conservation value of a given habitat type by using a "conservation value index", integrating the frequency of occurrence of each species in the considered habitat and their conservation status in Europe or in Southern Belgium. Both conservation value index and species richness were higher for edge habitats and open areas in forest, compared to forest interior and agricultural land. Detrended Correspondence Analysis of the plot species lists showed that bird assemblages from open area in forest are not intermediate between forest and agricultural open land, as opposed to external edge habitats. Hence, open areas in forest do not contain bird assemblages composed of forest species mixed with colonizing agricultural species but rather shelter specific bird assemblages. An Indicator Species analysis further emphasized this specificity and identified 7 species, which, in the Ardenne context, form a group of species specific to open areas in forest. Due to major changes of land use in the Ardenne during the 20th century, which leads to a tremendous decrease of moor, heath and fallow land areas, clearcut openings in the plantation forest progressively gained high conservation value at the regional scale. Further studies about habitat requirement of the conservation-interest species inhabiting these open areas is needed, including a better understanding of how early-successional species react to forest planning. If plantation forestry evolves to an uneven-aged and more permanently closed forest, then other options, including semi-natural habitat restoration, are urgently required to save early-successional bird communities. [less ▲]

Vers une démarche structurée de gestion forestière intégrée et participative

Learning material (2005)

This paper is aiming at presenting the main guidelines of a structured approach to an integrated forest management. Such a type of management that can be defined as being a concerted multipurpose ... [more ▼]

This paper is aiming at presenting the main guidelines of a structured approach to an integrated forest management. Such a type of management that can be defined as being a concerted multipurpose management takes into account numerous objectives that forest should be able to fulfil as well as the opinions of the actors involved in the forestry world. This approach consists of an evaluation and a subsequent multicriteria comparison of possible management alternatives. These management options and the expected consequences of their application on the future forest in terms of structure, composition and ability to meet all the expectations must be analyzed. In this respect scenario modellings are built, using simulations that suppose a good and very large knowledge of species autecology, site quality, level of biological quality. Various criteria and indicators are then used to assess the capacity of each alternative to achieve each defined and concerted objective. This is the starting point for comparisons between the management alternatives, based on the multicriteria decision-making technique, the so called ELECTRE III. This promising method has been tested in the context of a belgian pilot forest covering nearly 800 hectares in which foresters, private and public forest owners, hunters, naturalists, walkers and some other stakeholders are deeply involved. [less ▲]