Assessment of land-cover changes in a sub-catchment of the Oti basin (West Africa): A case study of the Kara River basin

Badjana, Hèou Maléki; Selsam, Peter; Wala, Kpérkouma; Flügel, Wolfgang-Albert; Fink, Manfred; Urban, Marcel; Helmschrot, Jörg; Afouda, Abel; Akpagana, Koffi

doi:10.1127/zgpi/2014/0151-0170

Cited by 11 publications

(26 citation statements)

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“…Relevant studies on forest dynamics in a changing climate, its roles, drivers, policies, and reliable methods for their monitoring are duly undertaken using different approaches. While some of them are based on simple remote sensing e.g., [13][14][15][16][17][18][19], others have investigated the intensity analysis e.g., [20][21][22][23]. Though previous studies integrated remote sensing and household surveys to investigate landscape dynamics e.g., [24,25], little is known about the approach in Togo.…”

Section: Introductionmentioning

confidence: 99%

Remote Sensing-Based and Participatory Analysis of Forests, Agricultural Land Dynamics, and Potential Land Conservation Measures in Kloto District (Togo, West Africa)

et al. 2018

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This study investigates proximate drivers of cropland and forest degradation in the Kloto district (Togo, West Africa) as a way of exploring integrated sustainable landscape approaches with respect to socioeconomic and environmental needs and requirements. Net change analysis of major cash and food crops based on Landsat data from three time steps (1985-2002, 2002-2017, and 1985-2017) and quantitative analysis from participatory survey data with farmers and landowners are used. The study underlines poor agricultural systems and cassava farming as major factors contributing to the alarming forest losses between 1985 and 2017. A significant net loss in forest cover of 23.6% and areas under maize and cocoa agroforestry farming of 12.99% and 10.1% between 1985 and 2017, respectively, was noted. These significant losses are due to intensive cassava cropping (38.78%) and settlement expansion (7.87%). Meanwhile, the loss of forest cover between 2002 and 2017 was marginal (8.36%) compared to the period 1985-2002, which had a considerable loss of 15.24%. Based on participatory surveys, the majority of agricultural lands are threatened by erosion or physical deterioration (67.5%), land degradation or salt deposits and loss of micro/macro fauna and flora (56.7%), declines in soil fertility (32.5%) and soil water holding capacity (11.7%), and changes in soil texture (3.3%). Most farmers adhere to the proposed climate smart practices, with an emphasis on cost-effective drip irrigation systems (45.83%), soil mulching (35%), and the adoption of drought-resilient varieties (29.17%) to anticipate adverse spells. We conclude that low adoption of improved soil conservation, integrated water management, and harvesting systems and the use of less productive and adaptive cultivars entail extreme degradation of cropland and a decline in crop productivity. Consequently, farmers are forced to clear more forest in search of stable and healthy soil to meet their food demands and improve their livelihood. Capacity building on integrated pathways of soil and land management practices is therefore needed to ensure sustainable and viable socio-ecological systems at a local scale.

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Section: Introductionmentioning

confidence: 99%

Remote Sensing-Based and Participatory Analysis of Forests, Agricultural Land Dynamics, and Potential Land Conservation Measures in Kloto District (Togo, West Africa)

et al. 2018

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“…The study area is characterized by a cultural landscape marked by traditional agroforestry system wherein farmlands and crops are associated with parklands of multipurpose trees (Wala et al 2005;Folega et al 2011;Kebenzikato et al 2014;Padakale et al 2015). This cultural landscape is the source of the misclassification of settlements and croplands and even the source of confusion with savannahs (Badjana et al 2014b). Misclassification in water bodies is due to the low resolution of Landsat imagery limiting the distinction between water bodies with surrounding vegetation.…”

Section: Image Classification and Accuracy Assessmentmentioning

confidence: 97%

“…This activity consists of crop cultivation during the dry season on river banks and in wetlands where crop could benefit from flooding and soil moisture. This practice involves the destruction of gallery forest (Diwédiga et al 2013;Badjana et al 2014b). Recessional agriculture is categorized as a wetland agriculture and considered as one of the largest overall agriculture adaptations (Menotti and O'Sullivan 2013).…”

Section: Land Use and Land Cover Change Analysismentioning

confidence: 99%

Changes in Land Cover Categories within Oti-Kéran-Mandouri (OKM) Complex in Togo (West Africa) between 1987 and 2013

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et al. 2016

Climate Change Management

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Oti-Kéran-Mandouri (OKM) is a complex of protected areas with national and international ecological importance. It is located in the flood plain of the Oti River in Togo. Unfortunately, this area is under anthropogenic pressure. In order to enhance biodiversity conservation, this study aims to assess the spatial changes in land cover within OKM. Landsat images from different missions spanning the time steps 1987, 2000 and 2013 were used to produce land cover maps involving six classes. The classification was based on the maximum likelihood algorithm and the change analyses were performed using Land Change Modeler software integrated in Idrisi GIS and Image Processing system. 3 management system and increasing anthropogenic pressures. These are intensified by climate change since adaptive strategies, such as recessional agriculture, play an important role in land cover change. The ongoing process of rehabilitation should be strengthened to enable this protected area to play its roles as Ramsar site, biosphere reserve and priority corridor for the migration of the West African savannah elephant. Data from this study could be used to guide conservation planning, further landscape pattern assessment and land cover modelling in the framework of climate change.

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“…The integration of such tools helps to account for missing environmental data, the special landscape heterogeneity, the integrated and multi-scale river basin systems dynamics analysis, uncertainties reduction and decision making on the prediction and sustainable management of water resources. Applying the Integrated Land Management System (ILMS), a modular software platform that integrates remote sensing, GIS, distributed hydrological models and DSS, a pilot study regarding the implementation of ILWRM is currently being undertaken in the Kara River basin (Badjana et al, 2014), a sub-catchment of the Volta basin.…”

Section: Application Of Geoinformation Technologies For Water Resourcmentioning

confidence: 99%

“…Significant changes have occurred in land use and land cover (LULC) throughout the region, if compared to other environmental changes (Braimoh and Vlek 2004, Berger et al 2006, Badjana et al 2014. This calls for the integrated land and water resources management (ILWRM), an appropriate approach to strive for sustainable management of water resources and to adapt to global change impacts (Flügel 2010).…”

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confidence: 99%

Integrated water management tools supporting future water security and food production in West Africa

et al. 2015

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INTRODUCTIONIn most West African countries, the limited water resources are subject to several pressures including population growth and the associated increasing demand for water of sufficient quantity and quality for food production, changing land use and climate. Significant changes have occurred in land use and land cover (LULC) throughout the region, if compared to other environmental changes (Braimoh and Vlek 2004, Berger et al. 2006, Badjana et al. 2014. This calls for the integrated land and water resources management (ILWRM), an appropriate approach to strive for sustainable management of water resources and to adapt to global change impacts (Flügel 2010). Thus, the integrated assessment of surface and subsurface water resources based on a holistic systems's analysis approach (Flügel 2010) is essential to develop adequate management responses. However, the implementation of this approach is difficult in a region facing a lack of accurate and representative available data, limited knowledge and adequate technologies. Adapted technologies, techniques and practices are therefore required to overcome these difficulties and reduce the uncertainties related to future water availability and demand. This paper presents methodologies and tools that are in development and application, all supporting sustainable water management and food production in West Africa.

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Assessment of land-cover changes in a sub-catchment of the Oti basin (West Africa): A case study of the Kara River basin

Cited by 11 publications

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Remote Sensing-Based and Participatory Analysis of Forests, Agricultural Land Dynamics, and Potential Land Conservation Measures in Kloto District (Togo, West Africa)

Remote Sensing-Based and Participatory Analysis of Forests, Agricultural Land Dynamics, and Potential Land Conservation Measures in Kloto District (Togo, West Africa)

Changes in Land Cover Categories within Oti-Kéran-Mandouri (OKM) Complex in Togo (West Africa) between 1987 and 2013

Integrated water management tools supporting future water security and food production in West Africa

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