Morphology and microstructure of microbiotic soil crusts on a tiger bush sequence (Niger, Sahel)
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چکیده
منابع مشابه
Effect of lichen biological soil crusts on soil properties derived from early Holocene sandy sediments
Introduction: Biological soil crusts are a community of cyanobacteria, fungi, lichens, and mosses and play key roles in arid and semi-arid regions including carbon and nitrogen accumulation, soil fertility, dust capture, soil conservation and stability. Recent studies show that the formation of biological soil crusts on mobile dunes areas is extremely difficult due to low vegetation cover, st...
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A variety of microfauna inhabit the biological soil crusts (biocrusts) of arid soils from all parts of the globe, including the southwestern USA (Bamforth 2004, 2008; Darby et al. 2006, 2007a, b; Neher et al. 2009), the Negev Desert of Israel (Jones and Shachak 1990; Pen-Mouratov et al. 2011), the Tengger Desert of northern China (Liu et al. 2011; Li et al. 2011), Australia (Robinson et al. 200...
متن کاملThe Effect of Siliconizing and Borosiliconizing Processes on Microstructure and Morphology of Carbon Steel Surface Layers
A study for optimizing of siliconizing and borosiliconizing processes on carbon steels has been carried out. The process parameters, i.e, time and powder mixture, were considered for optimization of the case depth, surface quality and the hardness profile. Time and temperature of the processes were 4 hr and 950˚C, respectively. Powder mixture in siliconizing process was 2.5% ferrosilicon, 2.5%...
متن کاملThe Effect of Siliconizing and Borosiliconizing Processes on Microstructure and Morphology of Carbon Steel Surface Layers
A study for optimizing of siliconizing and borosiliconizing processes on carbon steels has been carried out. The process parameters, i.e, time and powder mixture, were considered for optimization of the case depth, surface quality and the hardness profile.
Time and temperature of the processes were 4 hr and 950˚C, respectively. Powder mixture in siliconizing process was 2.5% ferrosilicon, 2....
متن کاملDew formation on the surface of biological soil crusts
T. Fischer, M. Veste, O. Bens, and R. F. Hüttl Brandenburg University of Technology at Cottbus, Faculty of Environmental Sciences and Process Engineering, Central Analytical Laboratory, Konrad-Wachsmann-Allee 6, 03046 Cottbus, Germany CEBra – Centre for Energy Technology Brandenburg e.V., Friedlieb-Runge-Straße 3, 03046 Cottbus, Germany GFZ German Research Centre for Geosciences, Telegrafenberg...
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ژورنال
عنوان ژورنال: CATENA
سال: 1999
ISSN: 0341-8162
DOI: 10.1016/s0341-8162(99)00052-1