La modélisation intégrée d’un écosystème inondable

Kuper, Marcel; Mullon, Christian; Poncet, Yveline; Benga, Elisabeth; Morand, Pierre; Orange, Didier; Mahé, Gil; Arfi, Robert; Bamba, F.

doi:10.4000/books.irdeditions.8633

Cited by 2 publications

(6 citation statements)

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“…This was the reason, for instance, to represent 3 specific hydrological years in the model instead of providing the possibility to the user to simulate the hydrology of the next 10 years to come. It was found that the model interface was accessible to a wide variety of actors, who discussed the integrated management of this ecosystem (Kuper et al, 2002). This confirms the statement of Grant and Thompson (1997) on the fact that elaborate quantitative models may be counterproductive in changing management practices.…”

Section: Integrated Management and Integrated Modellingsupporting

confidence: 65%

“…Three types of hydrological entities have been defined (Kuper et al, 2002): (1) rivers and channels conveying water, schematised by straight lines ("segments"), (2) connections, contact points where rivers and channels diverge or converge and (3) flood plains and lakes, where water is stored temporarily or permanently, schematised by circles. The hydrosystem is thus represented by segments (rivers, channels), cones (plains, lakes) and knots (confluence, defluence).…”

Section: Scales and Entitiesmentioning

confidence: 99%

“…For each group of farmers, the size as well as the access to the different farming zones is known (Kuper et al, 2002).…”

Section: The Fishing and Agricultural Activities Module: A "Pulling" mentioning

confidence: 99%

“…Calculation of the labour requirements for the different farming zones: the labour requirements for a given time step are based on the agricultural activities: (1) land preparation, (2) upkeep (weeding, treatment), (3) harvest and threshing. The calendar of activities and the work load are based on Gallais (1967) and Kuper et al (2002). 2.…”

Section: The Fishing and Agricultural Activities Module: A "Pulling" mentioning

confidence: 99%

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Integrated modelling of the ecosystem of the Niger river inland delta in Mali

Kuper

Mullon

Poncet

et al. 2003

Ecological Modelling

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The Niger River inland delta in Mali constitutes a vast 36,000 km 2 area of wetlands, producing numerous natural resources, exploited by fishermen, pastoralists and farmers. It is also a humid zone protected through the Ramsar convention of 1971. To promote the management of its natural resources, an integrated model has been developed in order to simulate the evolution of this ecosystem in relation to different scenarios of population increase, diminishing natural flooding (climatic droughts, construction of dams), increasing stress on land tenure and access to farming areas, technological advances, current administrative decentralisation policy. Possible applications of the model are illustrated through an analysis of the impact of the construction of dams on the traditional farming systems of the delta (fishing, rice cropping, pastoralism), and through a sensitivity analysis of an evolution in the fishing techniques on the revenues of fishermen. The validity of the results of the modelling is discussed and its use for other studies in the field of integrated natural resources management analysed.

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Section: Integrated Management and Integrated Modellingsupporting

confidence: 65%

Section: Scales and Entitiesmentioning

confidence: 99%

“…For each group of farmers, the size as well as the access to the different farming zones is known (Kuper et al, 2002).…”

Section: The Fishing and Agricultural Activities Module: A "Pulling" mentioning

confidence: 99%

Section: The Fishing and Agricultural Activities Module: A "Pulling" mentioning

confidence: 99%

See 2 more Smart Citations

Integrated modelling of the ecosystem of the Niger river inland delta in Mali

Kuper

Mullon

Poncet

et al. 2003

Ecological Modelling

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“…Dans le delta, le régime hydrologique et la dynamique de l'environnement naturel sont étroitement associés aux activités (Kuper et al 2002). D'un point de vue spatial et temporel, cette dynamique hydrologique influence la productivité et le calendrier des activités.…”

Section: Activités Et Inondation Dans Le Deltaunclassified

Influence du Bani sur la variabilité saisonnière et interannuelle de la crue du fleuve Niger dans le delta intérieur au Mali

Zare

Mahé

Paturel

et al. 2017

Hydrological Sciences Journal

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Le delta intérieur du fleuve Niger est une zone humide sahélienne dont l'inondation dépend de la pluviométrie des bassins supérieurs du fleuve Niger et de son principal affluent, le Bani. La crise climatique qui a débuté en 1970 a très peu influencé les dates de passage des maximums de crue sur le Niger amont et son principal défluent, le Diaka. L'influence par contre est très forte sur le Bani, à la confluence avec le Niger à Mopti et sur le delta aval avec des dates de passages des maximums plus précoces qu'auparavant. Cela est dû à la faiblesse des superficies inondées au cours des années sèches. Pendant les années humides, l'importance des débordements latéraux ralentit la propagation de la crue avec pour conséquence des dates de passages plus tardives des maximums. Par ailleurs pendant les années humides antérieures à 1970 l'importance des débordements latéraux conférait au delta amont un caractère d'autorégulation par écrêtage des crues au niveau de certaines station.

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La modélisation intégrée d’un écosystème inondable

Cited by 2 publications

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Integrated modelling of the ecosystem of the Niger river inland delta in Mali

Integrated modelling of the ecosystem of the Niger river inland delta in Mali

Influence du Bani sur la variabilité saisonnière et interannuelle de la crue du fleuve Niger dans le delta intérieur au Mali

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