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Altitudinal analysis of carbon stocks in the Antisana páramo,Ecuadorian Andes

Journal of plant Ecology 2016年第5期9卷 553-563页

作者： Verónica Minaya Gerald Corzo Hugo Romero-Saltos Johannes van der Kwast Egbert Lantinga Remigio Galárraga-Sánchez Arthur Mynett UNESCO-IHE Institute for Water Education Westvest 72611 AX DelftThe Netherlands Technological University of Delft-TU-Delft Stevinweg 12628 CN DelftThe Netherlands Escuela politécnica Nacional EPNWater Science UnitLadrón de Guevara E11-253Quito 170517Ecuador Yachay Tech Ciudad del Conocimiento YachayHacienda San JoséS/NSan Miguel de Urcuquí100119Ecuador Farming Systems Ecology Wageningen UniversityPO Box 5636700 AN WageningenThe Netherlands

Aims The importance of quantifying carbon stocks in terrestrial ecosystems is crucial for determining climate change ***,the present regional assessments of carbon stocks in tropical grasslands are extrapolated to unsampled areas with a high degree of uncertainty and without considering the carbon and nitrogen composition of vegetation and soil along altitudinal *** study aims to assess carbon and nitrogen concentrations in soil and vegetation,aboveground carbon stocks distribution and soil organic carbon stocks along an altitudinal range in the páramo region in the Ecuadorian *** The vegetation inventory was conducted using 15×15 m sampling plots distributed in three altitudinal *** on the patterns exhibited by the dominant vegetation growth forms,biomass and soil were sampled to quantify the corresponding carbon and nitrogen ***,the aboveground live biomass along the páramo altitudinal range was estimated using allometric ***,soil and vegetation carbon stocks were estimated for the entire *** Findings Altitudinal analysis supported a potential distribution of carbon and nitrogen concentrations in soil,litter and live tissues,where higher concentrations were found in the low altitudinal range mainly for tussocks and acaulescent *** in litter showed higher concentrations at low altitudinal ranges for acaulescent rosettes and cushions *** the same growth forms,lignin patterns in litter were higher in high altitudinal *** texture provided complementary information:high percentage of silt was highly correlated to high soil nitrogen and carbon *** were found to be responsive to altitude with their,highest aboveground carbon stocks occurring at the low altitudinal range,but cushions and acaulescent rosettes responded *** established relationships among soil,vegetation and altitude shown in this study must be taken into accou

关键词： Andes carbon growth forms nitrogen páramo grassland

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