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Verlagsausgabe
DOI: 10.5445/IR/1000086730
Veröffentlicht am 22.10.2018
Originalveröffentlichung
DOI: 10.5194/hess-22-4981-2018

Assessment of hydrological pathways in East African montane catchments under different land use

Jacobs, S. R.; Timbe, E.; Weeser, B.; Rufino, M. C.; Butterbach-Bahl, K.; Breuer, L.

Abstract:
Conversion of natural forest (NF) to other land uses could lead to significant changes in catchment hydrology, but the nature of these changes has been insufficiently investigated in tropical montane catchments, especially in Africa. To address this knowledge gap, we aimed to identify stream water (RV) sources and flow paths in three tropical montane sub-catchments (27–36 km²) with different land use (natural forest, NF; smallholder agriculture, SHA; and commercial tea and tree plantations, TTP) within a 1021 km² catchment in the Mau Forest complex, Kenya. Weekly samples were collected from stream water, precipitation (PC) and mobile soil water for 75 weeks and analysed for stable isotopes of water (δ²H and δ¹⁸O) for mean transit time (MTT) estimation with two lumped parameter models (gamma model, GM; and exponential piston flow model, EPM) and for the calculation of the young water fraction. Weekly samples from stream water and potential endmembers were collected over a period of 55 weeks and analysed for Li, Na, Mg, K, Rb, Sr and Ba for endmember mixing analysis (EMMA). Solute concentrations in precipitation were lower than in str ... mehr


Zugehörige Institution(en) am KIT Institut für Meteorologie und Klimaforschung - Atmosphärische Umweltforschung (IMK-IFU)
Publikationstyp Zeitschriftenaufsatz
Jahr 2018
Sprache Englisch
Identifikator ISSN: 1027-5606, 1607-7938, 1607-7938 = Hydrology and earth system sciences (Online)
URN: urn:nbn:de:swb:90-867300
KITopen ID: 1000086730
Erschienen in Hydrology and earth system sciences
Band 22
Heft 9
Seiten 4981-5000
Bemerkung zur Veröffentlichung Gefördert durch den KIT-Publikationsfonds
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