Effects of acetylene at low concentrations on nitrification, mineralization and microbial biomass nitrogen concentrations in forest soils
نویسندگان
چکیده
منابع مشابه
Effects of vegetation type on microbial biomass carbon and nitrogen in subalpine mountain forest soils.
BACKGROUND/PURPOSE Microbial biomass plays an important role in nutrient transformation and conservation of forest and grassland ecosystems. The objective of this study was to determine the microbial biomass among three vegetation types in subalpine mountain forest soils of Taiwan. METHODS Tatachia is a typical high-altitude subalpine temperate forest ecosystem in Taiwan with an elevation of ...
متن کاملConcentrations in Biomass, Litter, and Soils
Mercury Distribution Across 14 U.S. Forests. Part I: Spatial Patterns of Concentrations in Biomass, Litter, and Soils D. Obrist,* D. W. Johnson, S. E. Lindberg, Y. Luo, O. Hararuk, R. Bracho, J. J. Battles, D. B. Dail, R. L. Edmonds, R. K. Monson, S. V. Ollinger, S. G. Pallardy, K. S. Pregitzer, and D. E. Todd Desert Research Institute, Reno, NV, USA University of Nevada, Reno, NV, USA Emeritus...
متن کاملAquatic nitrogen transformations at low oxygen concentrations.
Nitrite and nitrous oxide made up 40% of the hypolimnetic dissolved inorganic nitrogen in mesotrophic Lake Rotoiti, New Zealand, prior to hypolimnetic anoxia. Up to 120 mg of N m-3 as nitrite and 20 mg of N m-3 as nitrous oxide accumulated, whereas dissolved-oxygen concentrations remained between 1.0 and 0.2 g m-3 and were totally consumed when the hypolimnion became completely anoxic. Assays o...
متن کاملEstimation of Microbial Biomass Carbon and Nitrogen in Bangladesh Soils
In order to estimate the microbial biomass content and to quantify the amount of available plant nutrients derived from microbial biornass in Bangladesh soils, biomass-C, -N, and available-N eoptents using samples from 8 soils were measured by applying the chloroform fumigation and drying-rewetting methods, respectively. 1)
متن کاملAnalysis of acetylene reduction rates of soybean nodules at low acetylene concentrations.
It has been previously proposed that acetylene reduction data at subsaturating acetylene concentrations could be interpreted by use of the Michaelis-Menten equation, based on the acetylene concentration external to the nodules. One difficulty of this view is that the assumption that the system is not diffusion limited is violated when studying intact nodules. The presence of a gas diffusion bar...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Science Bulletin
سال: 2008
ISSN: 2095-9273,2095-9281
DOI: 10.1007/s11434-008-0470-7