Sentences with phrase «metre of soils»

Remote observations of hydrogen atoms by NASA's Odyssey spacecraft in 2002 hinted that ice might be locked in the top metre of soil at lower latitudes.

Any life would have to be shielded under at least a metre of soil or rock to survive.

That means that up to 19.9 billion tonnes of carbon are currently stored within seagrass plants and the top metre of soil beneath them — more than twice the Earth's global emissions from fossil fuels in 2010.

Because of the severe drought of 1997 and 1998, we calculate that approximately 270,000 km2 of Amazonian forest had completely depleted plant - available water stored in the upper five metres of soil by the end of the 1998 dry season.

Nepstad et al.'s Nature paper says «In the 1998 dry season, some 270,000 sq. km of forest became vulnerable to fire, due to completely depleted plant - available water stored in the upper five metres of soil.

Because of the severe drought of 1997 and 1998, we calculate that approximately 270,000 km2 of Amazonian forest had completely depleted plant - available water stored in the upper ® ve metres of soil by the end of the 1998 dry season.

In the 1998 dry season, some 270,000 sq. km of forest became vulnerable to fire, due to completely depleted plant - available water stored in the upper five metres of soil.

Most of the carbon was stored in the top metre of soil (not including roots) however the variation in carbon content was most noticeable for aboveground woody biomass where wildlands had 12 times the carbon content of vineyards.

Not exact matches

The company adds that wheat seed seldom survives more than two years in soil, and that 99 per cent of wheat pollen gets deposited within 10 metres.

Vršanský and his colleagues found it in the Tan Phu cave, part of a lava - tube cave system running a few metres below the soil surface under a forest in southern Vietnam.

Another set of sensors, buried 10 metres deep in the silty soil, will measure how quickly the water seeps in.

This would mean a one metre - depth loss of soil from an area corresponding to the size of the city of Berlin, or a one centimetre loss from an area twice the size of Belgium.

A geological formation in China reveals how a small plant managed to anchor earth to a depth of 15 metres, allowing soils to form

The fungal network (mycelium) also provides bacteria with an excellent infrastructure: there may be hundreds of metres of fungal hyphae winding through just one gram of soil.

The majority of the soil's carbon is stored in the surface layer which is about one metre thick and is therefore the layer which agriculture, grazing and forestry directly impact.

Map indicating the amount of carbon in the top three metres of permafrost soils.

As these walls were being constructed, millions and millions of invisible cosmic particles called muons descended into the earth's atmosphere and penetrated metres deep, through layers of concrete, soil and rock.

Lakes and rivers froze, and the soil froze to a depth of a metre or more.

Thorium is relatively abundant (a cubic metre of garden soil typically contains around 60g of Thorium), and it is much safer than Uranium or Plutonium (a Thorium reactor can not sustain itself, so if it starts overheating, you just turn off the power supply).

Anomalies relative to 1981 - 2010 in precipitation rate (mm / day) from ERA - Interim, JRA - 55 and GPCC, two - metre relative humidity (%) from ERA - Interim and JRA - 55, and the volumetric moisture content of the top 7 cm of soil from ERA - Interim, for December 2016.

What keeps soils alive, and productive, is the compost or humus of leaf litter, animal dung, withered roots and other decaying vegetation in the first metre or so of topsoil: this in turn feeds an invisible army of tiny creatures that recycle the nutrient elements for the next generation of plant life.