نتایج جستجو برای: peat

تعداد نتایج: 5320  

2007
Irka Hajdas Georges Bonani Heinz Furrer Andreas Mäder Werner Schoch

The peat section at Niederweningen is a site of spectacular excavations of numerous bones of mammoth and other animals that was first recognized in the late 19th century. In 1987/1990, new excavations provided more peat material, which was radiocarbon dated to 33,000 C years BP and 42,000 C years BP. The first AMS radiocarbon ages of mammoth bones from 1890/1891 excavations placed the age betwe...

2016
LISA M. CURRAN

Astiani D, Burhanuddin, Taherdjadeh M, Curran LM. 2016. Effects of water table level on soil CO2 respiration in West Kalimantan forested and bare peatland: An experimental stage. Nusantara Bioscience 8: 201-206. Peatland forest is one of ecosystems that are susceptible to the alterations of water regimes. Our previous study demonstrated that hydrologic conditions are predominant variables in de...

Journal: :Ambio 2009
James M Waddington Janina Plach Jason P Cagampan Maria Lucchese Maria Strack

The Canadian horticultural peat industry generates carbon emissions through various methods of peat extraction, processing, and land-use changes. This study provides a carbon emissions analysis comparing the traditional vacuum harvest (VH) and block-cut (BC) extraction techniques to a new acrotelm transplant (AT) method that restores natural peatland function by preserving and replacing the sur...

2002

Ground penetrating radar (GPR) and electromagnetic terrain conductivity (EM) surveys were performed to detect frozen ground and peat layers at a proposed landfill site in Fairbanks, Alaska. Geotechnical test pits showed frozen ground and peat layers in places, prompting a concern that differential settlement would disrupt the planned leachate collection system—a network of pipes installed benea...

2010
Mats Dynesius Heloise Gibb Joakim Hjältén

Many species use coarse woody debris (CWD) and are disadvantaged by the forestry-induced loss of this resource. A neglected process affecting CWD is the covering of the surfaces of downed logs caused by sinking into the ground (increasing soil contact, mostly covering the underside of the log), and dense overgrowth by ground vegetation. Such cover is likely to profoundly influence the quality a...

Journal: :Animals : an open access journal from MDPI 2015
Markku Saastamoinen Susanna Särkijärvi Seppo Hyyppä

Stable air quality and the choice of bedding material are an important health issue both in horses and people working or visiting horse stables. Risks of impaired respiratory health are those that can especially be avoided by improving air quality in the stable. The choice of bedding material is particularly important in cold climate conditions; where horses are kept most of the day and year in...

1998
S. C. Zoltai W. J. de Groot

Boreal peatlands occupy about 1.14 x 106 km2 in North America. Fires can spread into peatlands, burning the biomass, and if moisture conditions permit, burning into the surface peat. Charred layers in peat sections reveal that historically bogs in the subhumid continental regions and permafrost peatlands of the subarctic regions have been the most susceptible to fires. Fire return periods were ...

Journal: :journal of ornamental plants 2015
ali mahboub khomami

this research was conducted to evaluate the possibility using peanut shells compost as a suitable medium in cultivating ornamental plants. effect of peanut shells composts on the growth of viola tricolor and marigold was investigated during seven months. peat + perlite (with a ratio of 2:1) used as control treatment and peat replaced by 25, 50, 75 and 100 % v/v of peanut shells compost. plant g...

Journal: :Botanical Gazette 1908

الفتی, جمالعلی, شبانی, طیبه, پیوست, غلامعلی,

Abstract In order to determine the effect of different substrates on the yield and quality of three pepper cultivars in a pot and tube culture, an investigation was conducted in a greenhouse in Sarkhoon, Bandar-Abbas in 2010. Different substrates including palm waste (100%), peat (100%), palm waste + peat (50:50 V/V), palm waste + peat (25:75 V/V) and waste palm + peat (75:25 V/V) and three cu...

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