Noufé D., Mahé Gil, Kamagate B., Servat Eric, Tie A. G. B., Savané I. (2015). Climate change impact on agricultural production : the case of Comoe River basin in Ivory Coast. In :
African hydrology research. Hydrological Sciences Journal = Journal des Sciences Hydrologiques, 60 (11 no spécial), p. 1972-1983. ISSN 0262-6667.
Titre du document
Climate change impact on agricultural production : the case of Comoe River basin in Ivory Coast
Noufé D., Mahé Gil, Kamagate B., Servat Eric, Tie A. G. B., Savané I.
In
African hydrology research
Source
Hydrological Sciences Journal = Journal des Sciences Hydrologiques, 2015,
60 (11 no spécial), p. 1972-1983 ISSN 0262-6667
The objective of this study is to evaluate the impact of climate change on the hydrological balance of the Comoe basin, an area of rainfed agriculture. Frequency analysis of cropping seasons, with estimation of cumulative water deficit through a daily water balance simulation (1950-2000), was used to explore the impact of variation in climate conditions on the cropping season. The performance indicators show an uneven evolution of agroclimatic potential: in a unimodal regime centred on the north of the basin, the cropping season duration, which did not change significantly, is consistent with the small changes in onset and end dates to that season; however, the cumulative water deficit increased from 750 mm to more than 850 mm. In contrast, in the bimodal regime, the western fringe, while less affected by both the recession and the rainfall deficit, undergoes an unusually short duration of cropping season. Thus, the second cropping season no longer lasts 90 days and seems less compatible with some cropping cycles. Such drought could increase the risk in annual cereal production without, however, being a leading limiting factor.
Plan de classement
Sciences du milieu [021]
;
Hydrologie [062]
;
Bioclimatologie [072]
