【科研快讯 – Chemical Geology 等】化学风化及土壤P释放 等

【化学风化及土壤P释放】Jens Hartmann^a Nils Moosdorf^a Ronny Lauerwald^{a b} Matthias Hinderer^c A. Joshua West^d . Global chemical weathering and associated P-release — The role of lithology temperature and soil properties. Chemical Geology Volume 363 10 January 2014 Pages 145–163

Abstract

Because there remains a lack of knowledge about the spatially explicit distribution of chemical weathering rates at the global scale a model that considers prominent first-order factors is compiled step by step and the implied spatial variability in weathering is explored. The goal is to fuel the discussion about the development of an “Earth System” weathering function. We use as a starting point an established model of the dependence of chemical weathering on lithology and runoff calibrated for an island arc setting which features very high chemical weathering rates and a strong dependence on lithology and runoff. The model is enhanced stepwise with further factors accounting for soil shielding and temperature and the observed variation of fluxes is discu