Author: Ingrid Françoise Catharina MulderPublisher:
ISBN: 9789051708158
Category :
Languages : en
Pages : 257
Book Description
Soil Degradation in Benin
Author: Ingrid Françoise Catharina MulderPublisher:
ISBN: 9789051708158
Category :
Languages : en
Pages : 257
Book Description
Soil Degradation by Water Erosion in a Sub-humid West African Catchment
Author: Claudia HiepeFarmers’ Perceptions and Sustainable Land Use in the Atacora, Benin
Author: The Impacts of Soil Degradation Effects on Phytodiversity and Vegetation Structure on Atacora Mountain Chain in Benin (West Africa)
Author: Farris OkouPublisher:
ISBN:
Category : Electronic books
Languages : en
Pages : 0
Book Description
Atacora mountain is a particular ecosystem of West Africa where soil degradation occurs. The present study assessed the impacts of physical soil degradation on vegetation in the Beninese portion of this mountain chain. Phytosociological surveys were carried out along line transects from plain to summit within 22 plots of 30 m x 30 m. Based on indicators of physical soil degradation each plot was classified into one soil degradation class (Light, Moderate, High or Extreme). Impacts on plant diversity were assessed by comparing the floristic composition of soil degradation classes with the index of similarity of Jaccard. Variations between soil degradation classes of species richness, species chorological types, species life forms and species dispersal were also tested using a discriminant analysis combined with ANOVA. The Multi-Response Permutation Procedures analysis was used to pairwise compare the soil degradation classes based on the cover data of the species lists. All soil degradation classes were dissimilar, depending on the floristic composition. Discriminant analysis and ANOVA performed on biodiversity indicators had shown that species richness, and the number of regional species, phanerophytes and sarcochory decreased along the increasing degradation gradient in contrast to the number of species with wide distribution, therophytes and sclerochory. With regard to vegetation structure, the results had shown that only moderately and highly degraded soils presented the similar vegetation type. Physical soil degradation induced modification of floristic composition, phytodiversity loss and modification of vegetation structure. These results showed that the soil degradation gradient corresponds to a vegetation disturbance gradient.
Chapter The Impacts of Soil Degradation Effects on Phytodiversity and Vegetation Structure on Atacora Mountain Chain in Benin (West Africa).
Author: Okou FarrisPublisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Atacora mountain is a particular ecosystem of West Africa where soil degradation occurs. The present study assessed the impacts of physical soil degradation on vegetation in the Beninese portion of this mountain chain. Phytosociological surveys were carried out along line transects from plain to summit within 22 plots of 30 m x 30 m. Based on indicators of physical soil degradation each plot was classified into one soil degradation class (Light, Moderate, High or Extreme). Impacts on plant diversity were assessed by comparing the floristic composition of soil degradation classes with the index of similarity of Jaccard. Variations between soil degradation classes of species richness, species chorological types, species life forms and species dispersal were also tested using a discriminant analysis combined with ANOVA. The Multi-Response Permutation Procedures analysis was used to pairwise compare the soil degradation classes based on the cover data of the species lists. All soil degradation classes were dissimilar, depending on the floristic composition. Discriminant analysis and ANOVA performed on biodiversity indicators had shown that species richness, and the number of regional species, phanerophytes and sarcochory decreased along the increasing degradation gradient in contrast to the number of species with wide distribution, therophytes and sclerochory. With regard to vegetation structure, the results had shown that only moderately and highly degraded soils presented the similar vegetation type. Physical soil degradation induced modification of floristic composition, phytodiversity loss and modification of vegetation structure. These results showed that the soil degradation gradient corresponds to a vegetation disturbance gradient.
Agricultural Projects and Sustainable Development of Rural Areas in Benin
Author: Jacob Afouda YabiPublisher:
ISBN:
Category : Agricultural development projects
Languages : en
Pages : 222
Book Description
The most criticisms of agricultural projects are that their design, management and monitoring are little efficient and consider little development needs of stakeholders. These weaknesses induce low impacts on sustainable development of beneficiaries, as well as low participation and adoption of modern technologies, which make the projects little sustainable. This book investigates therefore the impacts of the projects on sustainable development of stakeholders and the factors affecting their participation and adoption decisions, using a with-without approach and a structural modelling. The results show the impacts were positive, but depended closely on the area where the projects were implemented. As feedback, overall satisfactions that the stakeholders view from the impacts, human capital and access to production inputs were key factors of participation and adoption. Therefore, the solution for more sustainable impacts of agricultural projects lies on designing and implementing small-scale projects that target real development problems of stakeholders, improvement on human capital and access to production input.
Land Degradation
Author: Uzo M. IgbozurikePublisher:
ISBN:
Category : Land degradation
Languages : en
Pages : 56
Book Description
Soil Degradation and Restoration in Africa
Author: Rattan LalPublisher: CRC Press
ISBN: 1351593307
Category : Nature
Languages : en
Pages : 330
Book Description
Soil degradation is a widespread problem in Africa resulting in decreased agricultural productivity while demand for food continues to increase. Degradation is caused by accelerated erosion, acidification, contamination, depletion of soil organic matter and plant nutrients, and salinization. The major cause of soil degradation in Africa is uncontrolled and excessive grazing in the savanna regions followed by deforestation and the use of inappropriate and extractive farming practices. Perpetual neglect of the health of soils in Africa can exacerbate the already serious problems of food and nutritional insecurity and environmental degradation. Food and nutritional security of the growing population of Africa can only be achieved if degraded soils are restored and soils of agroecosystems are managed prudently and sustainably. Ignoring soils and taking the fragile, finite and precious soil resources for granted is the principal cause of poverty, hunger, and environmental degradation. The downward spiral must be reversed through soil restoration measures based on translating science into action. This book describes the soils of Africa, processes of soil degradation, extent and severity of soil degradation, and the impacts of degradation processes on food and nutritional security. Features: Explores the extent and severity of soil degradation in Africa Analyzes the cause–effect relationship between anthropogenic activities and soil degradation Reviews processes of soil degradation in Africa including erosion, salinization, nutrient depletion, and decline of soil organic matter Addresses the effect of climate change on soil degradation in Africa. Explains how soil degradation causes food and nutritional insecurity Part of the Advances in Soil Sciences series, this volume is specifically devoted to the processes and factors that cause soil degradation and the challenges and potential for remediation and restoration of soil health in Africa.
Victim’s Perception of Gully Erosion in Edo State, Nigeria
Author: Augustine OsayandePublisher: GRIN Verlag
ISBN: 3668604223
Category : Science
Languages : en
Pages : 21
Book Description
Academic Paper from the year 2017 in the subject Geography / Earth Science - Physical Geography, Geomorphology, Environmental Studies, grade: A, University Of Abuja, course: Goegraphy and Environmental Management, language: English, abstract: This research is on victim’s perception of gully erosion in Edo State, Nigeria. The primary objective was to evaluate how victims understand causes, effects of gully erosion and effectiveness of erosion control measures in the study area. The research used questionnaire as a tool to examine victims perception of gully erosion in the area. Out of 480 questionnaire administered, 454 were returned and they were used for the analyses. Based on the findings of this study, victims of gully erosion in the area attributed causes to poor construction of culverts, deforestation and termination of drainages in sloppy topography. They agree that gully erosion in the area has resulted to losses of human lives, losses of buildings, displacement of people and losses of productive land. Victims also confirmed damages of infrastructures such as roads, bridges, buildings and altering of transportation corridors. Their responses revealed that gully erosion has resulted to decreased species richness, slowed succession and declining agricultural productivity which means less vegetation cover to soil, less return of organic matter and less biological and nutrient activity.
Author: Jean Senahoun