The biogeochemistry of phosphorus after the first century of soil development on Rakata Island, Krakatau, Indonesia |
| |
| Authors: | William H Schlesinger LA Bruijnzeel Mark B Bush Emily M Klein Kimberly A Mace Jane A Raikes RJ Whittaker |
| |
| Institution: | (1) Department of Botany, Duke University, Durham, N.C 27708, USA;(2) Nicholas School of the Environment, Duke University, The Netherlands;(3) Faculty of Earth Sciences, Vrije Universiteit, 1081 HV Amsterdam, The Netherlands;(4) Department of Biological Sciences, Florida Institute of Technology, Melbourne, Florida 32901, USA;(5) School of Geography, University of Oxford, Mansfield Road, Oxford, OX1 3TB, U.K |
| |
| Abstract: | This study examined the accumulation of organic carbon (C) and fractions ofsoil phosphorus (P) in soils developing in volcanic ash deposited in the1883 eruption of Krakatau. Organic C has accumulated at rates of 45 to 127g/m2/yr during 110 years of soil development, resulting inprofiles with as much as 14 kgC/m2. Most soil P is found inthe HCl-extractable forms, representing apatite. A loss of HCl-extractableP from the surface horizons is associated with a marked accumulation ofNaOH-extractable organic P bound to Al. A bioassay with hill rice suggeststhat P is limiting to plant growth in these soils, perhaps as a result ofthe rapid accumulation of P in organic forms. |
| |
| Keywords: | Krakatau organic carbon soil phosphorus volcanic ash |
| 本文献已被 SpringerLink 等数据库收录！ |
|
