scholarly journals Perceptions paysannes de la dégradation des ressources naturelles des bas-fonds en zone soudano-sahélienne: cas du sous bassin versant du Nakanbé-Dem au Burkina Faso

2020 ◽  
Vol 14 (3) ◽  
pp. 883-895
Author(s):  
Adama Ilboudo ◽  
Soungalo Soulama ◽  
Edmond Hien ◽  
Prosper Zombre

Le Sahel burkinabé est caractérisé par une forte dégradation des ressources naturelles. Cette régression est imputable à des facteurs naturels et anthropiques. La présente étude concerne les bas-fonds du sous bassin versant du Nakanbé-Dem situé dans la limite australe du Sahel. Dans cette zone dominée par l’agriculture pluviale et l’élevage extensif, les zones humides revêtent une importance capitale. Face à leur dégradation continue, la participation des communautés est nécessaire pour une gestion durable des bas-fonds. Cette étude analyse les indicateurs endogènes de la dégradation des bas-fonds de la zone soudano-sahélienne. Des données d’enquêtes semi-structurées ont été collectées auprès de 325 exploitants de six bas-fonds. Des statistiques descriptives et une analyse factorielle par correspondance (AFC) ont été appliquées. Les résultats montrent que les paysans perçoivent clairement la dégradation des bas-fonds. Les paysans se servent d’éléments météorologiques, floristiques et physiques pour caractériser l’état de dégradation des bas-fonds. La disparition de plusieurs espèces et l’apparition d’espèces ubiquistes leur permettent d’évaluer la dégradation des terres des bas-fonds. Ces indicateurs endogènes varient en fonction du sexe et du niveau d’instruction. L’étude a souligné l’importance des connaissances endogènes dans l’analyse du phénomène de dégradation des bas-fonds. Elle suggère la nécessité d’en tenir compte désormais dans la mise en oeuvre des techniques de restauration des bas-fonds dégradés.Mots clés : Indicateurs endogènes ; dégradation des bas-fonds ; perceptions ; bassin versant, Burkina Faso.   English Title: Farmers' Perceptions of lowland's natural resources degradation in Sudano Sahelian area: case of Nakanbe-Dem Sub-Watershed in Burkina FasoThe Burkina Faso Sahel is characterized by a great degradation of natural resources. This regression is due to natural and anthropogenic factors. This study concerns the lowlands of the Nakanbé-Dem sub-watershed, located in the northern limit of the Sahel. In this area dominated by rain farming and extensive livestock, wetlands are very important. In this context of continuous lowlands degradation, the participation of communities is necessary for a sustainable management. This study analyses the local indicators of lowlands’ degradation in Sudano-Sahelian zone. Data from semi-structured surveys were collected from 325 farmers in six lowlands of Nakanbé-Dem sub-watershed. Descriptive statistics and correspondence factor analysis (CFA) were applied. The results show that farmers clearly perceive the degradation of the lowlands. Farmers use meteorological, floristic and physical elements to characterize the state of lowlands degradation. The loss of several species and the appearance of ubiquitous species allow them to assess the degradation of the lowlands. These local indicators vary according to sex and education level. Farmers also apprehend degraded lowlands flora reshaping and identify taxa indicative of lowland ecosystems health. The study highlighted the importance of the endogenous knowledge in the analysis of lowlands’ degradation. It suggests the need to take into account local indicators in the implementation of lowlands’ restoration techniques. Keywords: endogenous indicators, lowlands degradation, perception, Watershed, Burkina Faso.

2006 ◽  
Vol 157 (11) ◽  
pp. 513-518
Author(s):  
Babou André Bationo ◽  
Jean-Baptiste Taonda ◽  
Dieudonné Ilboudo ◽  
Tanga Guissou ◽  
Blaise Ilboudo

The aim of the present study was to assess the impact of an «ecological farm» approach to improve the lives of the populations, as well as the conditions and management of natural resources. The study was conducted by means of surveys with key actors, the analysis of data from monitoring the ecological farms and field observations.


1995 ◽  
Vol 1995 (1) ◽  
pp. 860-861
Author(s):  
George J. Divoky ◽  
Craig Harrison

ABSTRACT Seabird restoration plans require reliable estimates of the birds directly affected by a spill and the impact of that mortality on populations. They also require restoration techniques known to increase the rate of natural recovery. Unfortunately, restoration proposals have been hindered by damage assessments based on outdated and/or inappropriate data, exaggerated estimates of damages, and a lack of proven restoration techniques. Regular monitoring of seabird resources, knowledge of natural and anthropogenic factors influencing populations, and recognition of the typically limited role humans can play in seabird restoration will lead to the development of more realistic restoration plans.


2020 ◽  
Vol 12 (20) ◽  
pp. 8410 ◽  
Author(s):  
Cheechouyang Faichia ◽  
Zhijun Tong ◽  
Jiquan Zhang ◽  
Xingpeng Liu ◽  
Emmanuel Kazuva ◽  
...  

Land use/cover change (LUCC) is one of the causes of global climate and environmental change. Understanding rapid LUCC in urbanized areas is vital for natural resources management for sustainable development. This study primarily considered Vientiane, the capital of Laos, which experienced rapid LUCC due to both natural and anthropogenic factors. The study used geographical information system (GIS) combined with ERDAS and TerrSet technologies to objectively process the ground surveyed and remotely obtained data in order to investigate the historical LUCC as well as predict future LUCC in the study area during the periods of 1995–2018 and 2030–2050, respectively. A comprehensive list of assessment factors comprised of both natural and anthropogenic factors was used for analysis using the cellular automata–Markov (CA–Markov) model. The results show a historical loss of intact forest of 24.36% and of bare land of 1.01%. There were also tremendous increases in degraded forest (11.36%), agricultural land (8.91%), built-up areas (4.49%) and water bodies (1.16%). Finally, the LUCC prediction results indicate the conversion of land use from one type to another, particularly from natural to anthropogenic use, in the near future. These changes demonstrate that the losses associated with ecosystem services will destructively impact human wellbeing in the city and other areas of the country. The study results provide the basic scientific knowledge for LUCC planners, urban designers and natural resources managers. They serve as a decision-making support tool for the establishment of sustainable land resource utilization policies in Vientiane and other cities of similar conditions.


Author(s):  
Fedir Kiptach

The primacy of public understanding of ecological paradigm of development was revealed. The concept and essence of renewable using of natural resources and the main principles of management of land resources were illustrated. Two landscapes were singled out based on materials of soil studies of the territory of the village council Zalissya in Starosinyavskiy district, Khmelnytskyi region. Among them: a) much-dissected upland of a forest-steppe with black soils, humus, typical and ashed, with fragments of grey forest soils, in the past with hornbeam-oak forests and herb-grass steppe, now largely ploughed; b) mediumdissected upland of a forest-steppe with black soils, low content of humus, typical, deep, in the past with oak forests and herb-grass steppe, now largely ploughed. Fraction of soils covered flatness and linear erosion was calculated. Natural and anthropogenic factors promoting the active development of erosion in this region were identified. Norms of favourable correlation of lands for two forest-steppe landscapes within the territory of land use of the village council Zalissya with the purpose of protecting the soils from erosion and improvement of the land state were grounded. Key words: renewable using of natural resources, land resources, landscapes systems, lands.


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