caa a22 4500 606220364 CHVBK 20210128101123.0 cr unu---uuuuu 210128e20150801xx s 000 0 eng 10.1007/s11104-015-2469-6 doi (NATIONALLICENCE)springer-10.1007/s11104-015-2469-6 Biomass and soil carbon stocks of indigenous agroforestry systems on the south-eastern Rift Valley escarpment, Ethiopia [Elektronische Daten] [Mesele Negash, Mike Starr] Background and Aims: Biomass carbon (C) and soil organic carbon (SOC) stocks in three indigenous agroforestry (AF) systems (Enset [Ensete ventricosum, Musaceae], Enset-Coffee and Fruit-Coffee) practiced on the Rift Valley escarpment of Ethiopia are presented and evaluated. These unique AF systems are characterised by a high proportion and diversity of trees. Methods: Data were collected from six smallholdings per AF system. Above- and belowground biomass of trees (fruit and non-fruit), enset and coffee plants were calculated using allometric equations while the biomasses of herbs, litter and fine roots (<2cm) were determined by destructive sampling techniques. SOC stocks (0-30 and 30-60cm) were calculated from measured C contents and bulk density values. Results: Smallholding total biomass C stocks averaged 67Mgha−1 with trees accounting for 39-93%. Herbs accounted for <4% of aboveground biomass. Coffee accounted for 11% and enset 9% of total biomass C on average. SOC stocks (0-60cm) were 109-253Mgha−1 (52-91% of total C stocks) and uncorrelated to biomass C stocks. Biomass C or SOC stocks did not significantly differ between AF systems but biomass C stocks were significantly correlated to elevation. Conclusions: The C stocks of the three studied AF systems were found to be amongst the highest reported for tropical forests and agroforestry systems. These unique AF systems are therefore well suited to REDD+ projects. However, the C stocks were more determined by individual smallholder management practice than by AF system or climate (elevation). Springer International Publishing Switzerland, 2015 Agroforestry nationallicence Enset nationallicence Coffee nationallicence Carbon sequestration nationallicence Soil organic carbon nationallicence South-eastern Ethiopia nationallicence Negash Mesele Viikki Tropical Resources Institute, Department of Forest Sciences, University of Helsinki, P.O. Box 27, FI-00014, Helsinki, Finland aut Starr Mike Department of Forest Sciences, University of Helsinki, P.O. Box 27, FI-00014, Helsinki, Finland aut Plant and Soil Springer International Publishing 393/1-2(2015-08-01), 95-107 0032-079X 393:1-2<95 2015 393 11104 https://doi.org/10.1007/s11104-015-2469-6 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s11104-015-2469-6 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Negash Mesele Viikki Tropical Resources Institute, Department of Forest Sciences, University of Helsinki, P.O. Box 27, FI-00014, Helsinki, Finland aut NATIONALLICENCE 700 1- Starr Mike Department of Forest Sciences, University of Helsinki, P.O. Box 27, FI-00014, Helsinki, Finland aut NATIONALLICENCE 773 0- Plant and Soil Springer International Publishing 393/1-2(2015-08-01), 95-107 0032-079X 393:1-2<95 2015 393 11104