Using soil erosion as an indicator for integrated water resources management: a case study of Ruiru drinking water reservoir, Kenya
نویسندگان
چکیده
Abstract Functions and services provided by soils play an important role for numerous sustainable development goals involving mainly food supply environmental health. In many regions of the Earth, water erosion is a major threat to soil functions mostly related land-use change or poor agricultural management. Selecting proper management practices requires site-specific indicators such as erosion, which follow spatio-temporal variation. The aim this study was develop monthly risk maps data-scarce catchment Ruiru drinking reservoir located in Kenya. Therefore, Revised Universal Soil Loss Equation complemented with cubist–kriging interpolation method applied. erodibility map created digital mapping methods ( R 2 = 0.63) revealed that 46% have medium high erodibility. rates showed two distinct potential peaks loss over course year, are consistent bimodal rainy season experienced central A higher 2.24 t/ha estimated long rains (March–May) compared 1.68 short (October–December). Bare land cropland contributors loss. Furthermore, spatial reveal areas around indigenous forest on western southern parts highest risk. These detected risks give efficient timely strategies, thus allowing continued multi-functional use within soil–food–water nexus.
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ژورنال
عنوان ژورنال: Environmental Earth Sciences
سال: 2022
ISSN: ['2199-9163', '2199-9155']
DOI: https://doi.org/10.1007/s12665-022-10617-0