Variation of Soils Erodibility in Mbe Agropastoral Area in Relation with Land Utilization, Central Cameroon
Variation of Soils Erodibility in Mbe Agropastoral Area in Relation with Land Utilization, Central Cameroon作者机构：Department of Earth Sciences Faculty of Science University of Ngaoundéré Ngaoundéré Cameroon Institute of Agricultural Research for Development (IRAD) Garoua Cameroon Institute of Agricultural Research for Development (IRAD) Ngaounderé Cameroon Department of Earth Sciences Faculty of Science University of Yaoundé I Yaoundé Cameroon
出 版 物：《Open Journal of Soil Science》 (土壤科学期刊（英文）)
年 卷 期：2019年第9卷第12期
页 面：269-283页
学科分类：09[农学] 0903[农学-农业资源与环境] 090301[农学-土壤学]
主 题：Mbé Wack Erodibility Soil Properties Land Use
摘 要：The study of the soils from Mbé and Wack is carried out in the framework of the knowledge of soils from the Adamawa Region of Cameroon and their erodibility was investigated using erodibility indices obtained through physico-chemical data. Eleven topsoils (0 - 20 cm) samples were collected on different land use and their susceptibility to erosion was assessed. The water dispersible clay (34.92 - 121.75 g•kg−1), the clay dispersion ratio (0.45 - 0.84) and the dispersion ratio (0.75 - 0.89) were high in the studied soils while the clay aggregation (13.16 - 42.27g•kg−1) and the clay flocculation index (0.16 - 0.55) were low to moderate indicating their high erodibility. The soils under natural vegetation, more clayey, displayed the highest amount of water dispersible clay while cropped soils recorded the smaller ones. Globally, in cropped soils, those under cereals displayed the highest clay dispersion indices than those under tubers. This suggests that tubers cropping practices in studied soils enhance their erodibility. Statistical analyses revealed that amorphous Al and Fe are elements which limit soils erodibility while K+ and promote soils particles dispersion. Sustainable management of these soils will consist on limiting runoff through agricultural practices such as direct seedling and orienting tillage perpendicularly to slope gradient.
维普期刊数据库