| Text | 346684 2015 altitude nitrate DOC depositions Water and Soil Chemistry Interactions in the Khumbu Valley, Nepal Magnani, A.; Balestrini, R.; Williams, M. W.; Wilson, A.; Salerno, F.; Godone, D. and Freppaz, M. University of Torino, Department of Agriculture Forest and Food Sciences, Largo Paolo Braccini 2, 10095 Grugliasco TO , Italy Water Research Institute, National Research Council, Via del Mulino 19, 20861 Brugherio MB , Italy Institute of Arctic and Alpine Research, University of Colorado, Boulder, Colorado 80309 0450, USA University of Torino, Research Center on Natural Risk in Mountain and Hilly Environments, NatRisk In the Khumbu Valley, Nepal, carbon and nitrogen cycling can be tracked through water chemistry and soil sample data. Precipitation and surface water chemistry from the Pyramid International Laboratory and surrounding areas from 2012 to 2014 is evaluated for trends in dissolved organic carbon DOC , dissolved organic nitrogen DON and nitrate. The spatial and temporal variability of the surface water chemistry is compared to ratios of carbon to nitrogen in soil samples. Soil carbon to nitrogen ratios decrease with elevation, consistent with dilution in surface water chemistry. The trends explored are representative of the influence of both debris covered glacier outflow of the upper valley and biogeochemical processes on the water and soil. Published version https //agu.confex.com/agu/fm15/meetingapp.cgi/Paper/77073 2015 American Geophysical Union AGU Fall Meeting San Francisco, California USA 14 18 December 2015 Internazionale Contributo Water and Soil Chemistry Interactions in the Khumbu Valley, Nepal Magnani_et_al_2015_AGU_poster_V08_DEF.pdf Poster raffaella.balestrini BALESTRINI RAFFAELLA franco.salerno SALERNO FRANCO TA.P04.032.001 Funzionalita degli ecosistemi acquatici dinamica dei nutrienti, idromorfologia e habitat fluviali |
