The nitrogen cycle of tropical montane forest in Ecuador turns inorganic under environmental change
作者： Wolfgang Wilcke , Sophia Leimer , Thorsten Peters , Paul Emck , Rütger Rollenbeck
DOI: 10.1002/2012GB004471
关键词: Ecology 、 Nutrient 、 Nitrification 、 Environmental science 、 Waterlogging (agriculture) 、 Terrestrial ecosystem 、 Cycling 、 Agronomy 、 Temperate climate 、 Nitrogen cycle 、 Throughfall
摘要: Water-bound nitrogen (N) cycling in temperate terrestrial ecosystems of the Northern Hemisphere is today mainly inorganic because anthropogenic release reactive N to environment. In little-industrialized and remote areas, contrast, a larger part occurs as dissolved organic (DON). north Andean tropical montane forest Ecuador, cycle changed markedly during 1998–2010 along with increasing deposition reduced soil moisture. The DON concentrations fractional contribution total significantly decreased rainfall, throughfall, solutions. This turn was most pronounced rainfall became weaker flow path water through system until it disappeared stream water. Decreasing contributions were caused not only by input but also production and/or enhanced decomposition. Accelerated decomposition might be attributable less waterlogging higher nutrient availability. Significantly NO3-N NO3-N/NH4-N concentration ratios throughfall litter leachate below thick layers indicated nitrification. mineral solutions, NH4-N increased significantly, suggesting net ammonification. Our results demonstrate that forests on rim Amazon basin experienced change one decade. likely parallels similar which followed industrialization zone more than century ago.
harvard.edu
sci-hub.se 参考文章(55)
R. Rollenbeck, P. Fabian, J. Bendix, Temporal Heterogeneities — Matter Deposition from Remote Areas Springer, Berlin, Heidelberg. pp. 303- 309 ,(2008) , 10.1007/978-3-540-73526-7_29
Wolfgang Wilcke, Jens Boy, Ute Hamer, Karin Potthast, Rütger Rollenbeck, Carlos Valarezo, Current Regulating and Supporting Services: Nutrient Cycles Ecosystem Services, Biodiversity and Environmental Change in a Tropical Mountain Ecosystem of South Ecuador. pp. 141- 151 ,(2013) , 10.1007/978-3-642-38137-9_11
Nico van Breemen, Natural organic tendency Nature. ,vol. 415, pp. 381- 382 ,(2002) , 10.1038/415381A
E. Matzner, T. Zuber, C. Alewell, G. Lischeid, K. Moritz, Trends in Deposition and Canopy Leaching of Mineral Elements as Indicated by Bulk Deposition and Throughfall Measurements Springer Berlin Heidelberg. pp. 233- 250 ,(2004) , 10.1007/978-3-662-06073-5_14
Pamela Matson, Kathleen A. Lohse, CONSEQUENCES OF NITROGEN ADDITIONS FOR SOIL PROCESSES AND SOLUTION LOSSES FROM WET TROPICAL FORESTS ,(2005)
W. Wilcke, S. Yasin, K. Fleischbein, R. Goller, J. Boy, J. Knuth, C. Valarezo, W. Zech, Nutrient Status and Fluxes at the Field and Catchment Scale Springer, Berlin, Heidelberg. pp. 203- 215 ,(2008) , 10.1007/978-3-540-73526-7_20
Wolfgang Wilcke, Syafrimen Yasin, Carlos Valarezo, Wolfgang Zech, Change in water quality during the passage through a tropical montane rain forest in Ecuador Biogeochemistry. ,vol. 55, pp. 45- 72 ,(2001) , 10.1023/A:1010631407270
Katrin Wolf, Edzo Veldkamp, Juergen Homeier, Guntars O. Martinson, Nitrogen availability links forest productivity, soil nitrous oxide and nitric oxide fluxes of a tropical montane forest in southern Ecuador Global Biogeochemical Cycles. ,vol. 25, ,(2011) , 10.1029/2010GB003876
Jens Boy, Rütger Rollenbeck, Carlos Valarezo, Wolfgang Wilcke, Amazonian biomass burning-derived acid and nutrient deposition in the north Andean montane forest of Ecuador Global Biogeochemical Cycles. ,vol. 22, pp. n/a- n/a ,(2008) , 10.1029/2007GB003158
E. Bai, B. Z. Houlton, Y. P. Wang, Isotopic identification of nitrogen hotspots across natural terrestrial ecosystems Biogeosciences. ,vol. 9, pp. 3287- 3304 ,(2011) , 10.5194/BG-9-3287-2012