Your search found 18 records
1 Thenkabail, Prasad.; Nolte, C. 1995. Mapping and characterizing inland valley agroecosystems of West and Central Africa: A methodology integrating remote sensing, global positioning system, and ground-truth data in a Geographic Information System framework. Ibadan, Nigeria: IITA. ix, 52p. (Resource and crop management research monograph no.16)
GIS ; Mapping ; Remote sensing ; Satellite surveys ; Land use ; Cropping systems ; Agronomy / West Africa / Central Africa / Africa South of Sahara
(Location: IWMI-HQ Call no: 006 G100 THE Record No: H016815)
2 Thenkabail, P. S.; Hall, J.; Lin, T.; Ashton, M. S.; Harris, D.; Enclona, E. A. 2003. Detecting floristic structure and pattern across topographic and moisture gradients in a mixed species Central African forest using IKONOS and Landsat - 7 ETM + images. International Journal of Applied Earth Observation, 4:255-270.
(Location: IWMI-HQ Call no: P 6620 Record No: H033320)
3 Jacob, F.; Petitcolin, F.; Schmugge, T.; Vermote, E.; French, A.; Ogawa, K. 2004. Comparison of land surface emissivity and radiometric temperature derived from MODIS and ASTER sensors. Remote Sensing of Environment, 90:137-152.
(Location: IWMI-HQ Call no: P 7655 Record No: H039401)
4 Andersen, I.; Dione, O.; Jarosewich-Holder, M.; Olivry, J.-C. 2005. The Niger River Basin: a vision for sustainable management. Washington, DC, USA: World Bank. 144p.
River basins ; History ; Water resources ; Hydrology ; Water quality ; Hydrography ; Hydrogeology ; Soils ; Climate change / West Africa / Central Africa / Niger River Basin
(Location: IWMI HQ Call no: e-copy only Record No: H044949)
http://www-wds.worldbank.org/external/default/WDSContentServer/WDSP/IB/2005/12/08/000090341_20051208084115/Rendered/PDF/345180PAPER0NR1Basin01OFFICIAL0USE1.pdf?pagePK=64193027&piPK=64187937&theSitePK=523679&menuPK=64187510&searchMenuPK=64187283&theSitePK=523679&entityID=000090341_20051208084115&searchMenuPK=64187283&theSitePK=523679
https://vlibrary.iwmi.org/pdf/H044949.pdf
https://vlibrary.iwmi.org/pdf/H044949.pdf
(5.14 MB) (5.1MB)
This book comprises two distinct elements. The first, and major, part of the
book (chapters 1–3) is a unique and essential compilation of technical information and data on the entire Niger River system. It presents a comprehensive overview of the physical environment and hydrological functions of the watershed, thus providing the necessary background for examination of the challenges of resource management and development potential. The second part of the book (chapter 4) presents the fundamental challenges that the nine countries 1 of the Basin face and are now addressing.
book (chapters 1–3) is a unique and essential compilation of technical information and data on the entire Niger River system. It presents a comprehensive overview of the physical environment and hydrological functions of the watershed, thus providing the necessary background for examination of the challenges of resource management and development potential. The second part of the book (chapter 4) presents the fundamental challenges that the nine countries 1 of the Basin face and are now addressing.
5 Andreassian, V.; Hall, A.; Chahinian, N.; Schaake, J. (Eds.) 2006. Large sample basin experiments for hydrological model parameterization: results of the Model Parameter Experiment - MOPEX. Wallingford, UK: International Association of Hydrological Sciences (IAHS). 347p. + DVD. (IAHS Publication 307)
Hydrology ; Models ; Databases ; River basins ; Watersheds ; Catchment areas ; Rainfall-runoff relationships ; Land cover ; Rivers ; Stream flow ; Runoff ; Data / Australia / France / Luxembourg / West Africa / Central Africa / Le Guillec / Le Toulourenc / Le Loup
(Location: IWMI HQ Call no: 551.48 G000 AND Record No: H046624)
(0.40 MB)
6 Schut, M.; van Asten, P.; Okafor, C.; Hicintuka, C.; Mapatano, S.; Nabahungu, N. L.; Kagabo, D.; Muchunguzi, P.; Njukwe, E.; Dontsop-Nguezet, P. M.; Sartas, M.; Vanlauwe, B. 2016. Sustainable intensification of agricultural systems in the Central African Highlands: the need for institutional innovation. Agricultural Systems, 145:165-176. [doi: https://doi.org/10.1016/j.agsy.2016.03.005]
Sustainable agriculture ; Farming systems ; Intensification ; Agricultural research ; Participatory approaches ; Innovation ; Institutional development ; Nongovernmental organizations ; CGIAR ; Stakeholders ; Constraints ; Farmers ; Highlands / Africa South of Sahara / Central Africa / Democratic Republic of the Congo / Rwanda / Burundi
(Location: IWMI HQ Call no: e-copy only Record No: H047848)
http://www.sciencedirect.com/science/article/pii/S0308521X16300440/pdfft?md5=5be37a48e32bcbda5ad290093053ebe8&pid=1-s2.0-S0308521X16300440-main.pdf
https://vlibrary.iwmi.org/pdf/H047848.pdf
https://vlibrary.iwmi.org/pdf/H047848.pdf
(0.81 MB) (828 KB)
This study identifies entry points for innovation for sustainable intensification of agricultural systems. An agricultural innovation systems approach is used to provide a holistic image of (relations between) constraints faced by different stakeholder groups, the dimensions and causes of these constraints, and intervention levels, timeframes and types of innovations needed. Our data shows that constraints for sustainable intensification of agricultural systems are mainly of economic and institutional nature. Constraints are caused by the absence, or poor functioning of institutions such as policies and markets, limited capabilities and financial resources, and ineffective interaction and collaboration between stakeholders. Addressing these constraints would mainly require short- and middle-term productivity and institutional innovations, combined with middle- to long-term NRM innovations across farm and national levels. Institutional innovation (e.g. better access to credit, services, inputs and markets) is required to address 69% of the constraints for sustainable intensification in the Central Africa Highlands. This needs to go hand in hand with productivity innovation (e.g. improved knowhow of agricultural production techniques, and effective use of inputs) and NRM innovation (e.g. targeted nutrient applications, climate smart agriculture). Constraint network analysis shows that institutional innovation to address government constraints at national level related to poor interaction and collaboration will have a positive impact on constraints faced by other stakeholder groups. We conclude that much of the R4D investments and innovation in the Central Africa Highlands remain targeting household productivity at farm level. Reasons for that include (1) a narrow focus on sustainable intensification, (2) institutional mandates and pre-analytical choices based project objectives and disciplinary bias, (3) short project cycles that impede work on middle- and long-term NRM and institutional innovation, (4) the likelihood that institutional experimentation can become political, and (5) complexity in terms of expanded systems boundaries and measuring impact.
7 Walker, T. S.; Alwang, J. (Eds.) 2015. Crop improvement, adoption, and impact of improved varieties in food crops in Sub-Saharan Africa. Montpellier, France: CGIAR; Wallingford, UK: CABI. 450p.
Crop improvement ; Food crops ; Adoption ; Improved varieties ; Genetic improvement ; Performance evaluation ; Diffusion ; Agricultural research ; Research programmes ; Investment ; Technological changes ; Monitoring ; Impact assessment ; Rural poverty ; Food security ; Cassava ; Cowpeas ; Soybeans ; Yams ; Maize ; Rice ; Wheat ; Groundnuts ; Pearl millet ; Pigeon peas ; Sorghum ; Potatoes ; Sweet potatoes ; Barley ; Chickpeas ; Faba beans ; Lentils / Africa South of Sahara / West Africa / Central Africa / Southern Africa / East Africa / South Asia / Ethiopia / Eritrea / Sudan / Uganda / Rwanda / India
(Location: IWMI HQ Call no: 338.10967 G110 WAL Record No: H047766)
(6.30 MB) (6.30 MB)
8 Ainembabazi, J. H.; Abdoulaye, T.; Feleke, S.; Alene, A.; Dontsop-Nguezet, P. M.; Ndayisaba, P. C.; Hicintuka, C.; Mapatano, S.; Manyong, V. 2018. Who benefits from which agricultural research-for-development technologies?: evidence from farm household poverty analysis in Central Africa. World Development, 108:28-46. [doi: https://doi.org/10.1016/j.worlddev.2018.03.013]
Agricultural research for development ; Technology assessment ; Innovation adoption ; Farmers ; Households ; Poverty ; Impact assessment ; Social welfare ; Crop production ; Varieties / Central Africa / Burundi / Democratic Republic of the Congo / Rwanda
(Location: IWMI HQ Call no: e-copy only Record No: H048852)
(1.37 MB)
It remains a challenge for agricultural research-for-development (AR4D) institutions to demonstrate to donors which technologies contribute significantly to poverty reduction due to a multitude of impact pathways. We attempt to overcome this challenge by utilizing the potential outcomes framework and quantile treatment effects analytical approaches applied on panel household data collected from Central Africa. Our findings show that adoption of AR4D technologies reduced the probability of being poor by 13 percentage points. A large share of this poverty reduction is causally attributable to adoption of improved crop varieties (32%) followed by adoption of post-harvest technologies (28%) and crop and natural resource management (26%), with the rest 14% attributable to unidentified and/or unmeasured intermediate outcomes or factors. The findings further indicate that relatively poor farm households benefit from adopting improved crop varieties more than the relatively better-off households. Correspondingly, the relatively better off households benefit from adopting post-harvest technologies enhancing crop commercialization much more than the relatively poor households. The findings reveal interesting policy implications for successful targeting of agricultural interventions aimed at reducing rural poverty.
9 Dixon, J.; Garrity, D. P.; Boffa, J.-M.; Williams, Timothy Olalekan; Amede, T.; Auricht, C.; Lott, R.; Mburathi, G. (Eds.) 2020. Farming systems and food security in Africa: priorities for science and policy under global change. Oxon, UK: Routledge - Earthscan. 638p. (Earthscan Food and Agriculture Series)
Farming systems ; Food security ; Climate change ; Policies ; Urban agriculture ; Peri-urban agriculture ; Sustainable development ; Irrigated farming ; Large scale systems ; Mixed farming ; Agropastoral systems ; Perennials ; Agricultural productivity ; Intensification ; Diversification ; Farm size ; Land tenure ; Livestock ; Fish culture ; Agricultural extension ; Forests ; Highlands ; Drylands ; Fertilizers ; Soil fertility ; Water management ; Natural resources ; Nutrition security ; Energy ; Technology ; Investment ; Market access ; Trade ; Human capital ; Agricultural population ; Gender ; Women ; Smallholders ; Farmers ; Living standards ; Poverty ; Hunger ; Socioeconomic environment ; Households ; Yield gap ; Tree crops ; Tubers ; Cereal crops ; Root crops ; Maize ; Ecosystem services ; Resilience ; Strategies / Africa South of Sahara / West Africa / East Africa / Southern Africa / Central Africa / Middle East / North Africa / Sahel
(Location: IWMI HQ Call no: e-copy only Record No: H049739)
(103 MB)
10 Dixon, J.; Boffa, J.-M.; Williams, Timothy Olalekan; de Leeuw, J.; Fischer, G.; van Velthuizen, H. 2020. Farming and food systems potentials. In Dixon, J.; Garrity, D. P.; Boffa, J.-M.; Williams, Timothy Olalekan; Amede, T.; Auricht, C.; Lott, R.; Mburathi, G. (Eds.). Farming systems and food security in Africa: priorities for science and policy under global change. Oxon, UK: Routledge - Earthscan. pp.535-561. (Earthscan Food and Agriculture Series)
Farming systems ; Food systems ; Food security ; Nutrition security ; Agricultural productivity ; Yield gap ; Intensification ; Diversification ; Agricultural population ; Farmers ; Farm size ; Nonfarm income ; Livestock ; Market access ; Poverty ; Households ; Living standards ; Labour mobility ; Strategies ; Institutions ; Policies ; Technology ; Natural resources management ; Ecosystem services / Sahel / Africa South of Sahara / West Africa / East Africa / Southern Africa / Central Africa / Middle East / North Africa
(Location: IWMI HQ Call no: e-copy only Record No: H049741)
http://old.worldagroforestry.org/downloads/Publications/PDFS/BC20009.pdf
https://vlibrary.iwmi.org/pdf/H049741.pdf
https://vlibrary.iwmi.org/pdf/H049741.pdf
(0.18 MB) (181 KB)
11 Dixon, J.; Garrity, D.; Mburathi, G.; Boffa, J.-M.; Amede, T.; Williams, Timothy Olalekan. 2020. Ways forward: strategies for effective science, investments and policies for African farming and food systems. In Dixon, J.; Garrity, D. P.; Boffa, J.-M.; Williams, Timothy Olalekan; Amede, T.; Auricht, C.; Lott, R.; Mburathi, G. (Eds.). Farming systems and food security in Africa: priorities for science and policy under global change. Oxon, UK: Routledge - Earthscan. pp.562-588. (Earthscan Food and Agriculture Series)
Farming systems ; Food systems ; Agricultural development ; Food security ; Nutrition security ; Intensification ; Diversification ; Sustainability ; Innovation platforms ; Technology ; Policies ; Investment ; Market access ; Nonfarm income ; Farmers ; Population ; Social capital ; Strategies ; Energy / Sahel / Africa South of Sahara / West Africa / East Africa / Southern Africa / Central Africa / North Africa
(Location: IWMI HQ Call no: e-copy only Record No: H049742)
http://apps.worldagroforestry.org/downloads/Publications/PDFS/BC20010.pdf
https://vlibrary.iwmi.org/pdf/H049742.pdf
https://vlibrary.iwmi.org/pdf/H049742.pdf
(1.90 MB) (1.90 MB)
12 Garrity, D.; Dixon, J.; Mburathi, G.; Williams, Timothy Olalekan; Amede, T. 2020. Conclusions: implementation of the farming systems approach for African food security. In Dixon, J.; Garrity, D. P.; Boffa, J.-M.; Williams, Timothy Olalekan; Amede, T.; Auricht, C.; Lott, R.; Mburathi, G. (Eds.). Farming systems and food security in Africa: priorities for science and policy under global change. Oxon, UK: Routledge - Earthscan. pp.589-598. (Earthscan Food and Agriculture Series)
Food security ; Farming systems ; Food systems ; Diversification ; Intensification ; Nutrition security ; Sustainability ; Market access ; Innovation platforms ; Technology ; Rural development ; Strategies ; Policies ; Institutions ; Stakeholders ; Households / Sahel / Africa South of Sahara / West Africa / East Africa / Southern Africa / Central Africa / Middle East / North Africa
(Location: IWMI HQ Call no: e-copy only Record No: H049743)
http://apps.worldagroforestry.org/downloads/Publications/PDFS/BC20011.pdf
https://vlibrary.iwmi.org/pdf/H049743.pdf
https://vlibrary.iwmi.org/pdf/H049743.pdf
(0.09 MB) (92.2 KB)
13 Fan, X.; Miao, C.; Duan, Q.; Shen, C.; Wu, Y. 2021. Future climate change hotspots under different 21st century warming scenarios. Earth’s Future, 9(6):e2021EF002027. [doi: https://doi.org/10.1029/2021EF002027]
Climate change ; Forecasting ; Global warming ; Extreme weather events ; Precipitation ; Temperature ; Emission ; Models ; Uncertainty ; Indicators / Central Africa / West Africa / Southern Africa / Central America / Arctic Region / Indonesia / Tibetan Plateau / Amazon
(Location: IWMI HQ Call no: e-copy only Record No: H050397)
https://agupubs.onlinelibrary.wiley.com/doi/epdf/10.1029/2021EF002027
https://vlibrary.iwmi.org/pdf/H050397.pdf
https://vlibrary.iwmi.org/pdf/H050397.pdf
(4.65 MB) (4.65 MB)
Identifying climate change hotspot regions is critical for planning effective mitigation and adaptation activities. We use standard Euclidean distance (SED) to calculate integrated changes in precipitation and temperature means, interannual variability, and extremes between different future warming levels and a baseline period (1995–2014) using the Coupled Model Intercomparison Project Phase 6 (CMIP6) climate model ensemble. We find consistent hotspots in the Amazon, central and western Africa, Indonesia and the Tibetan Plateau at warming levels of 1.5 °C, 2 °C and 3 °C for all scenarios explored; the Arctic, Central America and southern Africa emerge as hotspots at 4 °C warming and at the end of the 21st century under two Shared Socioeconomic Pathways scenarios, SSP3-7.0 and SSP5-8.5. CMIP6 models show higher SED values than CMIP5, suggesting stronger aggregated effects of climate change under the new scenarios. Hotspot time of emergence (TOE) is further investigated; TOE is defined as the year when the climate change signal first exceeds the noise of natural variability in 21st century projections. The results indicate that TOEs for warming would occur over all primary hotspots, with the earliest occurring in the Arctic and Indonesia. For precipitation, TOEs occur before 2100 in the Arctic, the Tibetan Plateau and Central America. Results using a geographical detector model show that patterns of SED are shaped by extreme hot and dry occurrences at low-to-medium warming, while precipitation and temperature means and extreme precipitation occurrences are the dominant influences under the high emission scenario and at high warming levels.
14 Leakey, R. R. B.; Tientcheu Avana, M.-L.; Awazi, N. P.; Assogbadjo, A. E.; Mabhaudhi, Tafadzwanashe; Hendre, P. S.; Degrande, A.; Hlahla, S.; Manda, L. 2022. The future of food: domestication and commercialization of indigenous food crops in Africa over the third decade (2012–2021). Sustainability, 14(4):2355. (Special issue: Interdisciplinary Approaches to Mainstreaming Underutilized Crops) [doi: https://doi.org/10.3390/su14042355]
Food crops ; Indigenous organisms ; Domestication ; Commercialization ; Agroforestry ; Tree crops ; Genetic improvement ; Medicinal properties ; Ethnobotany ; Nutritional value ; Nonwood forest products ; Vegetative propagation ; Trade ; Marketing ; Cultivation ; Natural resources management ; Food security ; Livelihoods ; Policies ; Poverty alleviation ; Rural development ; Drylands ; Lowland ; Highlands / North Africa / West Africa / East Africa / Southern Africa / Central Africa / Sahel
(Location: IWMI HQ Call no: e-copy only Record No: H050971)
(1.62 MB) (1.62 MB)
This paper follows the transition from ethnobotany to a deeper scientific understanding of the food and medicinal properties of African agroforestry tree products as inputs into the start of domestication activities. It progresses on to the integration of these indigenous trees as new crops within diversified farming systems for multiple social, economic and environmental benefits. From its advent in the 1990s, the domestication of indigenous food and non-food tree species has become a global programme with a strong African focus. This review of progress in the third decade is restricted to progress in Africa, where multi-disciplinary research on over 59 species has been reported in 759 research papers in 318 science publications by scientists from over 833 research teams in 70 countries around the world (532 in Africa). The review spans 23 research topics presenting the recent research literature for tree species of high priority across the continent, as well as that in each of the four main ecological regions: the humid zone of West and Central Africa; the Sahel and North Africa; the East African highlands and drylands; and the woody savannas of Southern Africa. The main areas of growth have been the nutritional/medicinal value of non-timber forest products; the evaluation of the state of natural resources and their importance to local people; and the characterization of useful traits. However, the testing of putative cultivars; the implementation of participatory principles; the protection of traditional knowledge and intellectual property rights; and the selection of elite trees and ideotypes remain under-researched. To the probable detriment of the upscaling and impact in tropical agriculture, there has been, at the international level, a move away from decentralized, community-based tree domestication towards a laboratory-based, centralized approach. However, the rapid uptake of research by university departments and national agricultural research centres in Africa indicates a recognition of the importance of the indigenous crops for both the livelihoods of rural communities and the revitalization and enhanced outputs from agriculture in Africa, especially in West Africa. Thus, on a continental scale, there has been an uptake of research with policy relevance for the integration of indigenous trees in agroecosystems and their importance for the attainment of the UN Sustainable Development Goals. To progress this in the fourth decade, there will need to be a dedicated Centre in Africa to test and develop cultivars of indigenous crops. Finally, this review underpins a holistic approach to mitigating climate change, as well as other big global issues such as hunger, poverty and loss of wildlife habitat by reaping the benefits, or ‘profits’, from investment in the five forms of Capital, described as ‘land maxing’. However, policy and decision makers are not yet recognizing the potential for holistic and transformational adoption of these new indigenous food crop opportunities for African agriculture. Is ‘political will’ the missing sixth capital for sustainable development?
15 Matchaya, Greenwell; Yade, M.; Guthiga, P.; Tefera, W.; Yamdjeu, A. W. 2021. Policy and programmatic changes resulting from the biennial reviews and agriculture joint sector reviews under the Comprehensive Africa Agriculture Development Programme (CAADP). Third Biennial Review Brief: Africa-Wide. Pretoria, South Africa: Regional Strategic Analysis and Knowledge Support System for Eastern and Southern Africa (ReSAKSS-ESA); Kigali, Rwanda: AKADEMIYA2063. 12p. (2021 Comprehensive Africa Agriculture Development Programme (CAADP) Biennial Review Brief)
Agricultural development ; Development programmes ; Reviews ; Agricultural sector ; Policies ; Investment ; Stakeholders ; Participation ; Inclusion ; Accountability ; Declarations ; Indicators / West Africa / Central Africa / Southern Africa / East Africa
(Location: IWMI HQ Call no: e-copy only Record No: H051551)
https://www.resakss.org/sites/default/files/2021%20CAADP%20Biennial%20Review%20Brief-Africa-wide.pdf
https://vlibrary.iwmi.org/pdf/H051551.pdf
https://vlibrary.iwmi.org/pdf/H051551.pdf
(0.44 MB) (455 KB)
This brief analyzes selected policy and programmatic changes reported by countries across Africa resulting from the BRs and the agricultural JSRs. It is based on data and other information collected using an online questionnaire from the Directors of Agricultural Planning, or their representatives, from 14 countries—Angola, Burkina Faso, Chad, Ethiopia, Kenya, Malawi, Mali, Mozambique, Namibia, Rwanda, Senegal, Sierra Leone, and Zambia— and from representatives of two RECs, the East African Community and the Southern African Development Community.
In addition, a review was conducted of the country BR briefs produced following the first BR of 2017 (AUC 2018) and the second of 2019 (AUC 2020) for several of these countries. The BR data reported by the countries was also analyzed.
In addition, a review was conducted of the country BR briefs produced following the first BR of 2017 (AUC 2018) and the second of 2019 (AUC 2020) for several of these countries. The BR data reported by the countries was also analyzed.
16 Sobratee-Fajurally, N.; Mabhaudhi, Tafadzwanashe. 2022. Inclusive sustainable landscape management in West and Central Africa: enabling co-designing contexts for systemic sensibility. Colombo, Sri Lanka: International Water Management Institute (IWMI). CGIAR Initiative on West and Central African Food Systems Transformation. 33p.
Landscape conservation ; Sustainability ; Inclusion ; Resilience ; Planning ; Livelihoods ; Water resources ; Energy ; Food systems ; Nexus approaches ; Participatory approaches ; Natural resources ; Governance ; Youth ; Women ; Decision support systems / West Africa / Central Africa
(Location: IWMI HQ Call no: e-copy only Record No: H051652)
(4.53 MB)
The report creates contexts for a systemic understanding of the CGIAR Transforming agric-food system (TAFS-WCA) initiative starting with work package (WP) 3 and expanding the causality effects across the other WPs of the Initiative. The main focus of WP3 is inclusive landscape management, whereby access to and proper use of land and water resources is a prerequisite to building a healthy, productive environment for resilient agri-food systems and livelihoods. Mapping synergies with other Work Packages ensure that respective contributions are integrated and impactful. The process intends to provide policymakers, researchers, and practitioners with a strategic framework to activate solutions temporarily with a stakeholder-defined suite of scenarios.
17 Amponsah, Andoh Kwaku; Atampugre, Gerald; Tilahun, Seifu A.; Oke, Adebayo. 2023. Developing water resources decision support system to strengthen landscape resilience planning and investment in West and Central Africa: a scoping and needs assessment report. Colombo, Sri Lanka: International Water Management Institute (IWMI). CGIAR Initiative on West and Central African Food Systems Transformation. 14p.
Decision-support systems ; Water resources ; Landscape ; Resilience ; Planning ; Investment / West Africa / Central Africa
(Location: IWMI HQ Call no: e-copy only Record No: H052660)
(988 KB)
The International Water Management Institute (IWMI) conducted a virtual scoping and need assessment workshop to develop a water resources decision support system (DSS) to strengthen landscape resilience planning and investment in West and Central Africa. The workshop, which took place on May 8, 2023, involved 51 participants from the public sector, private companies, research, and civil society organizations, as well as academia of six countries: Ghana, Nigeria, Cote d’Ivoire, Burundi, DRC, and Rwanda. The objective was to explore the current data gaps, information, and knowledge products in water DSS, where IWMI could provide support on appropriate science-based decision-support systems for water resources management, with a particular emphasis on strengthening landscape resilience planning and investment in the respective countries within the TAFS-WCA initiative. Most participants from six countries expressed interest in AWARE, a flood forecasting tool of IWMI, which facilitates coordination across sectors to trigger actions ahead of extreme climate events. Stakeholder mapping, end-user participation, comprehensive needs assessments, expert maintenance, and knowledge-sharing forums were identified as crucial for successful DSS implementation as part of reflection in the meeting.
18 Ebode, V. B.; Onguene, R.; Braun, J. J. 2024. Flood susceptibility mapping in the Tongo Bassa Watershed through GIS, remote sensing and frequency ratio model. Hydrology Research, nh2024152. (Online first) [doi: https://doi.org/10.2166/nh.2024.152]
Flooding ; Risk ; Remote sensing ; Geographical information systems ; Vulnerability ; Watersheds / Central Africa / Cameroon / Douala / Tongo Bassa
(Location: IWMI HQ Call no: e-copy only Record No: H052761)
https://iwaponline.com/hr/article-pdf/doi/10.2166/nh.2024.152/1396320/nh2024152.pdf
https://vlibrary.iwmi.org/pdf/H052761.pdf
https://vlibrary.iwmi.org/pdf/H052761.pdf
(1.54 MB) (1.54 MB)
Flooding constitutes a major problem for the inhabitants of Douala City in general and those of the Tongo Bassa watershed (TBW) in particular. Faced with this situation, public authorities need to put in place measures to mitigate the vulnerability of populations to these disasters. This article aims to map flooding risk areas in the TBW using the geographic information system, field data (historical flood points), remote sensing data (Sentinel II image) and the frequency ratio model. The map produced shows that 1.41, 8.88, 28.51, 33.86 and 27.33% of the basin area are respectively delimited into very low, low, medium, high and very high flood vulnerability classes. High and very high flooding risk areas (those where flooding is most likely to occur) occupy more than half of the basin (61.19%). These areas are characterized by significant imperviousness, low altitudes, weak slopes, significant proximity to watercourses and clayey soils. Most of the houses in the basin (66.92%) are located in areas affected by these two levels of exposure (high and very high). With respective success and prediction accuracy rates of 89 and 96.78%, a certain confidence deserves to be placed on the map of flooding risk areas produced.
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