All Rights Reserved. Land degradation is a major concern in Ethiopia since it leads to declining agricultural productivity, poverty and food insecurity. Soil degradation is one of the crucial issues in mountainous areas of Ethiopia which needs efforts to reduce it. In the last two decades, various soil and water conservation interventions had been introduced in to different parts of Ethiopia. However, the performance of s oil and water conservation structures has not been well studied. Therefore, this study was conducted in Ambachara watershed, Northern Ethiopia to evaluate the effect of soil and water conservation structures in reducing soil erosion and its effect on selected soil properties.
Box , Yaounde, Centre Region, Cameroon. The impact of different land-use systems on some soil physicochemical properties and macrofauna abundance in the humid tropics of Cameroon was studied. Soil particle size distribution, bulk density BD , pH, organic matter OM , and number of macrofauna were evaluated. The results showed that OM and number of macrofauna were higher in the SF than in the other land-use types. Based on the results, the SF produced more organic matter and higher number of macrofauna. However, the OM of the other land uses was not low; hence, it could be beneficial to return plant residues to the field for maintaining soil quality. Environmental degradation caused by inappropriate land use is a worldwide problem that has attracted attention in sustainable agricultural production systems [ 1 ].
Effect of Biochar Application on Physicochemical and Hydraulic Properties of Loess
Biochar is important for optimizing soil physical structure and improving soil water retention. Studies had shown that the application of biochar makes the loess infiltrate easily, seepage slowly, and contain more water, which improve the water infiltration characteristics and water retention capacity of loess. Biochar refers to a kind of solid insoluble matter produced by the carbonization of agricultural and forestry wastes [ 1 ].
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