Suchergebnisse

International audience ; The population growth is generally considered as the main cause of the fast degradation of forest ecosystems in sub Sahara Africa. This contribution presents a comparative analysis of spatial and temporal dynamics in two forest regions from West Africa (Forest Guinea) and Centre Africa (Centre-South Cameroon). It shows that the choice of cropping systems especially food crops, (and related food preferences) explains the difference in anthropic pressure on natural resources between these two situations, with similar low (20hab./km2) population density. The cropping systems based on upland rice have a higher spatial impact (0.91 ha/habitant) than those observed in Centre-south Cameroon based on tubers and plantain (0.15 ha/habitant). Simultaneously the extension of agroforests based on perennial crops (coffee, cocoa, fruit trees) requiring more space is active in Forest Guinea and still contributes to increase the pressure on land. In Cameroon, this anthropic pressure remains low unless the food crops become more urban market oriented. Decisions about crops and rotation are based on bio-physical conditions locally or regionally, but also and particularly on endogenous factors like food preferences (rice in Guinea, roots and plantain in Cameroon) and local and regional urban market demand. Understanding these socioeconomic and agroecological changes requires to mobilize various disciplinary approaches combining geoagronomy, economy and socio-anthropology.

International audience ; The population growth is generally considered as the main cause of the fast degradation of forest ecosystems in sub Sahara Africa. This contribution presents a comparative analysis of spatial and temporal dynamics in two forest regions from West Africa (Forest Guinea) and Centre Africa (Centre-South Cameroon). It shows that the choice of cropping systems especially food crops, (and related food preferences) explains the difference in anthropic pressure on natural resources between these two situations, with similar low (20hab./km2) population density. The cropping systems based on upland rice have a higher spatial impact (0.91 ha/habitant) than those observed in Centre-south Cameroon based on tubers and plantain (0.15 ha/habitant). Simultaneously the extension of agroforests based on perennial crops (coffee, cocoa, fruit trees) requiring more space is active in Forest Guinea and still contributes to increase the pressure on land. In Cameroon, this anthropic pressure remains low unless the food crops become more urban market oriented. Decisions about crops and rotation are based on bio-physical conditions locally or regionally, but also and particularly on endogenous factors like food preferences (rice in Guinea, roots and plantain in Cameroon) and local and regional urban market demand. Understanding these socioeconomic and agroecological changes requires to mobilize various disciplinary approaches combining geoagronomy, economy and socio-anthropology.

N° ISBN - 978-2-7380-1284-5 ; International audience ; Agricultural development is today one of the most complex challenges. Rural and urban populations have their expectations on agriculture and agricultural development and farmers, researchers, technicians, NGOs and policy makers, among others, continuously develop alternatives at different scales (policies, regulations or technical and organisational innovations) to strengthen the sustainability of the agricultural sector, ensure food production, and preserve the environment and culture. In this article we examine the possible dialogue between two research fields especially important for agriculture: Agronomy and Geography. Through a brief history, the first section presents the development of key milestones in agronomy and in geography as well as their main scientific questions and methods. The interface farm-territory is identified as a potential meeting point, where applied objectives of both disciplines - the agricultural production for agronomy and the land use management for geography - takes a new direction. The second section describes four examples where the analysis of the interface farm-territory is essential: the implementation of multifunctional practices in farms, whether they are for environmental, landscape or leisure objectives, and their articulation with surrounding territories ; the analysis of development trajectories of land use systems and the interactions between the spatiotemporal dynamics of farms and territories; the interactions between farms and the supply chain in which they are inserted (eg. agroindustry, urban markets).In conclusion, we discuss the main challenges and opportunities to develop this integration of research between agronomy and geography. The development of new approaches dealing with the farm-territory interface can not be done without scientific innovation, open reflexivity and taking risks included in any interdisciplinary approach.

N° ISBN - 978-2-7380-1284-5 ; International audience ; Agricultural development is today one of the most complex challenges. Rural and urban populations have their expectations on agriculture and agricultural development and farmers, researchers, technicians, NGOs and policy makers, among others, continuously develop alternatives at different scales (policies, regulations or technical and organisational innovations) to strengthen the sustainability of the agricultural sector, ensure food production, and preserve the environment and culture. In this article we examine the possible dialogue between two research fields especially important for agriculture: Agronomy and Geography. Through a brief history, the first section presents the development of key milestones in agronomy and in geography as well as their main scientific questions and methods. The interface farm-territory is identified as a potential meeting point, where applied objectives of both disciplines - the agricultural production for agronomy and the land use management for geography - takes a new direction. The second section describes four examples where the analysis of the interface farm-territory is essential: the implementation of multifunctional practices in farms, whether they are for environmental, landscape or leisure objectives, and their articulation with surrounding territories ; the analysis of development trajectories of land use systems and the interactions between the spatiotemporal dynamics of farms and territories; the interactions between farms and the supply chain in which they are inserted (eg. agroindustry, urban markets).In conclusion, we discuss the main challenges and opportunities to develop this integration of research between agronomy and geography. The development of new approaches dealing with the farm-territory interface can not be done without scientific innovation, open reflexivity and taking risks included in any interdisciplinary approach.

N° ISBN - 978-2-7380-1284-5 ; International audience ; Agricultural development is today one of the most complex challenges. Rural and urban populations have their expectations on agriculture and agricultural development and farmers, researchers, technicians, NGOs and policy makers, among others, continuously develop alternatives at different scales (policies, regulations or technical and organisational innovations) to strengthen the sustainability of the agricultural sector, ensure food production, and preserve the environment and culture. In this article we examine the possible dialogue between two research fields especially important for agriculture: Agronomy and Geography. Through a brief history, the first section presents the development of key milestones in agronomy and in geography as well as their main scientific questions and methods. The interface farm-territory is identified as a potential meeting point, where applied objectives of both disciplines - the agricultural production for agronomy and the land use management for geography - takes a new direction. The second section describes four examples where the analysis of the interface farm-territory is essential: the implementation of multifunctional practices in farms, whether they are for environmental, landscape or leisure objectives, and their articulation with surrounding territories ; the analysis of development trajectories of land use systems and the interactions between the spatiotemporal dynamics of farms and territories; the interactions between farms and the supply chain in which they are inserted (eg. agroindustry, urban markets).In conclusion, we discuss the main challenges and opportunities to develop this integration of research between agronomy and geography. The development of new approaches dealing with the farm-territory interface can not be done without scientific innovation, open reflexivity and taking risks included in any interdisciplinary approach.

N° ISBN - 978-2-7380-1284-5 ; International audience ; Agricultural development is today one of the most complex challenges. Rural and urban populations have their expectations on agriculture and agricultural development and farmers, researchers, technicians, NGOs and policy makers, among others, continuously develop alternatives at different scales (policies, regulations or technical and organisational innovations) to strengthen the sustainability of the agricultural sector, ensure food production, and preserve the environment and culture. In this article we examine the possible dialogue between two research fields especially important for agriculture: Agronomy and Geography. Through a brief history, the first section presents the development of key milestones in agronomy and in geography as well as their main scientific questions and methods. The interface farm-territory is identified as a potential meeting point, where applied objectives of both disciplines - the agricultural production for agronomy and the land use management for geography - takes a new direction. The second section describes four examples where the analysis of the interface farm-territory is essential: the implementation of multifunctional practices in farms, whether they are for environmental, landscape or leisure objectives, and their articulation with surrounding territories ; the analysis of development trajectories of land use systems and the interactions between the spatiotemporal dynamics of farms and territories; the interactions between farms and the supply chain in which they are inserted (eg. agroindustry, urban markets).In conclusion, we discuss the main challenges and opportunities to develop this integration of research between agronomy and geography. The development of new approaches dealing with the farm-territory interface can not be done without scientific innovation, open reflexivity and taking risks included in any interdisciplinary approach.

N° ISBN - 978-2-7380-1284-5 ; International audience ; Agricultural development is today one of the most complex challenges. Rural and urban populations have their expectations on agriculture and agricultural development and farmers, researchers, technicians, NGOs and policy makers, among others, continuously develop alternatives at different scales (policies, regulations or technical and organisational innovations) to strengthen the sustainability of the agricultural sector, ensure food production, and preserve the environment and culture. In this article we examine the possible dialogue between two research fields especially important for agriculture: Agronomy and Geography. Through a brief history, the first section presents the development of key milestones in agronomy and in geography as well as their main scientific questions and methods. The interface farm-territory is identified as a potential meeting point, where applied objectives of both disciplines - the agricultural production for agronomy and the land use management for geography - takes a new direction. The second section describes four examples where the analysis of the interface farm-territory is essential: the implementation of multifunctional practices in farms, whether they are for environmental, landscape or leisure objectives, and their articulation with surrounding territories ; the analysis of development trajectories of land use systems and the interactions between the spatiotemporal dynamics of farms and territories; the interactions between farms and the supply chain in which they are inserted (eg. agroindustry, urban markets).In conclusion, we discuss the main challenges and opportunities to develop this integration of research between agronomy and geography. The development of new approaches dealing with the farm-territory interface can not be done without scientific innovation, open reflexivity and taking risks included in any interdisciplinary approach.

N° ISBN - 978-2-7380-1284-5 ; International audience ; Agricultural development is today one of the most complex challenges. Rural and urban populations have their expectations on agriculture and agricultural development and farmers, researchers, technicians, NGOs and policy makers, among others, continuously develop alternatives at different scales (policies, regulations or technical and organisational innovations) to strengthen the sustainability of the agricultural sector, ensure food production, and preserve the environment and culture. In this article we examine the possible dialogue between two research fields especially important for agriculture: Agronomy and Geography. Through a brief history, the first section presents the development of key milestones in agronomy and in geography as well as their main scientific questions and methods. The interface farm-territory is identified as a potential meeting point, where applied objectives of both disciplines - the agricultural production for agronomy and the land use management for geography - takes a new direction. The second section describes four examples where the analysis of the interface farm-territory is essential: the implementation of multifunctional practices in farms, whether they are for environmental, landscape or leisure objectives, and their articulation with surrounding territories ; the analysis of development trajectories of land use systems and the interactions between the spatiotemporal dynamics of farms and territories; the interactions between farms and the supply chain in which they are inserted (eg. agroindustry, urban markets).In conclusion, we discuss the main challenges and opportunities to develop this integration of research between agronomy and geography. The development of new approaches dealing with the farm-territory interface can not be done without scientific innovation, open reflexivity and taking risks included in any interdisciplinary approach.

N° ISBN - 978-2-7380-1284-5 ; International audience ; Agricultural development is today one of the most complex challenges. Rural and urban populations have their expectations on agriculture and agricultural development and farmers, researchers, technicians, NGOs and policy makers, among others, continuously develop alternatives at different scales (policies, regulations or technical and organisational innovations) to strengthen the sustainability of the agricultural sector, ensure food production, and preserve the environment and culture. In this article we examine the possible dialogue between two research fields especially important for agriculture: Agronomy and Geography. Through a brief history, the first section presents the development of key milestones in agronomy and in geography as well as their main scientific questions and methods. The interface farm-territory is identified as a potential meeting point, where applied objectives of both disciplines - the agricultural production for agronomy and the land use management for geography - takes a new direction. The second section describes four examples where the analysis of the interface farm-territory is essential: the implementation of multifunctional practices in farms, whether they are for environmental, landscape or leisure objectives, and their articulation with surrounding territories ; the analysis of development trajectories of land use systems and the interactions between the spatiotemporal dynamics of farms and territories; the interactions between farms and the supply chain in which they are inserted (eg. agroindustry, urban markets).In conclusion, we discuss the main challenges and opportunities to develop this integration of research between agronomy and geography. The development of new approaches dealing with the farm-territory interface can not be done without scientific innovation, open reflexivity and taking risks included in any interdisciplinary approach.