S. Eraku, M.H. Jamil
Damages to the land resources, mainly those happening on the drainage basin at Alo, Gorontalo occur in consequence of degradation of the ground surface layer as hit by raindrops and rainwater flow that carry soil surface. This issue becomes quite serious due to illegal logging and agricultural land conversion, mostly for maize fields as one of Gorontalo's top commodities. As an attempt to analyze the problems, this study is undergone through field observation and documentation. This study covers aspects of socio-biogeophysical characteristics of the Alo drainage basin and analyzes the level of soil surface erosion and tolerable erosion rate. The result shows that 98.75 percent of erosion hazard is classified into low-To-moderate, covering approximately 6,874.721 hectares. Meanwhile, 1.25 percent of the high-To-extreme level of erosion hazard is 98.79 hectares wide. This suggests that the inappropriate use of land is more likely to increase the erosion hazard rate. © Published under licence by IOP Publishing Ltd.
Department of Geography Education, Faculty of Mathematics and Natural Science, Universitas Negeri Gorontalo, Indonesia; Agribusiness Study Program, Department of Social Economic of Agriculture, Faculty of Agriculture, Hasanuddin University, Indonesia
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