Sentences with phrase «peat surfaces»

This assumption, however, was contradicted by scientists from the University of Eastern Finland a decade ago, when they discovered that bare peat surfaces in permafrost peatlands are releasing high amounts of N2O, despite the general nitrogen limitation of tundra ecosystems.

Bare peat surfaces in the discontinuous permafrost zone of the sub-Arctic East European tundra.

We suggest the low accumulation rates are due to repeated burning of the peat surface.

Not exact matches

TheKelangais a type of marshy forest formed when silt or sand from the mountains settles in the valley over a non-porous bed of clay; plant life roots in the peat that builds up on the surface.

Many materials can sustain a smouldering reaction, including coal, tobacco, wood, biomass fuels on the forest surface (duff) and subsurface (peat), cotton clothing and string, and polymeric foams (e.g. upholstery and bedding materials).

To start, they removed the coal that lay just below the surface; once peat lining the forest floor, it was transformed by the intense heat of Earth's interior and pressure from layers of ash.

Eugene Kolesnikov, a geochemist at Moscow State, and his colleagues excavated trenches in peat deposits near the lake, a tough job given the resistance of the hard permafrost layer below the surface.

Globally, peat covers 3 per cent of the land surface, with two - thirds of the total in Canada and the former Soviet Union.

The vegetation at the surface of the bogs is important for maintaining the health of the ecosystem and protecting the peat that lies beneath from decomposing, he said.

Spanning 10,000 years in four and a half minutes, our ecologist shows how acting locally to look after the surface of the peat has a significant global impact in trapping carbon and slowing flood water.

He whittled ornate whistles that he rarely blew, detailed animal figurines that he abandoned in the undergrowth, and intricate talismans of celestial design, which he hid in the dimples of maple burls or inside the crevices of the twisted roots that emerged from the forest's peat like tangles of surfacing snakes.

Under the soil surface, at the end of the prop roots, huge mats of thread - like secondary roots form thick layers similar to peat moss.

To extract each barrel of oil from a surface mine, the industry must first cut down the forest, then remove an average of two tons of peat and dirt that lie above the oil sands layer, then two tons of the sand itself.

The most typical scenario for peat fires is when a fast flaming wildfire sweeps over a region burning the surface vegetation and igniting the peat if this is dry enough.

The haze was caused by the spread of vast smoldering peat fires in Indonesia, burning below the surface for months during the El Niño climate event.

it may be said that the combustion of fossil fuel, whether it be peat from the surface or oil from 10,000 feet below, is likely to prove beneficial to mankind in several ways, besides the provision of heat and power.

It creates a peat - like pile, in most places scores of feet deep, that can burn for extended periods and re-ignite long extinguished surface fires.

While they cover only 6 percent of the world's surface, wetlands — marshes, peat bogs, swamps, river deltas, mangroves, tundra, lagoons and river floodplains — are estimated to hold 771 gigatons of greenhouse gases, or 10 - 20 percent of the globe's terrestrial carbon.

This includes carbon on land in vegetation, soils, peat and freshwater and in the atmosphere, ocean and surface ocean sediments.

He takes the peat from the bog, or the oil from the underground oil field, or the coal from the sedimentary rocks; brings it to the surface where oxygen is plentiful, and causes it to react with oxygen there.

It may be said that the combustion of fossil fuel, whether it be peat from the surface or oil from 10,000 feet below, is likely to prove beneficial to mankind in several ways, besides the provision of heat and power.

Here, we explore the influence of differing permafrost regimes (bogs with no surface permafrost, localized permafrost features with surface permafrost, and internal lawns representing areas of permafrost degradation) on rates of peat accumulation at the southernmost limit of permafrost in continental Canada.

Net organic matter accumulation generally was greater in unfrozen bogs and internal lawns than in the permafrost landforms, suggesting that surface permafrost inhibits peat accumulation and that degradation of surface permafrost stimulates net carbon storage in peatlands.

Emissions of CO2 were highest from peat incubated in the localized permafrost feature, suggesting that slow organic matter accumulation rates are due, at least in part, to rapid decomposition in surface permafrost peat.

... the combustion of fossil fuel, whether it be peat from the surface or oil from 10,000 feet below, is likely to prove beneficial to mankind in several ways, besides the provision of heat and power.