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Science/Tech
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Title: Soil releases more carbon into air with warmer temperatures: study
Source: [None]
URL Source: http://www.xinhuanet.com/english/2018-08/02/c_137362223.htm
Published: Aug 2, 2018
Author: staff
Post Date: 2018-08-02 08:30:40 by Tatarewicz
Keywords: None
Views: 208
Comments: 6

WASHINGTON, Aug. 1 (Xinhua) -- American researchers have revealed that the vast reservoir of carbon stored in soil is entering Earth's atmosphere at an increasing rate, most likely as a result of warming temperatures.

A study published on Wednesday in the journal Nature showed that microbes feeding on dead leaves and fallen trees converted the carbon storehouse into carbon dioxide with warmer temperatures.

According to the study, this process is speeding up as Earth warms and is happening faster than plants are absorbing carbon through photosynthesis.

The researchers found that the rate at which microbes are transferring carbon from soil to the atmosphere has increased 1.2 percent over a 25-year time period, from 1990 through 2014.

Globally, soil holds about twice as much carbon as Earth's atmosphere. In a forest where stored carbon is manifest in the trees above, even more carbon resides unseen underfoot.

The finding, based on thousands of observations made by scientists at hundreds of sites around the globe.

"It's important to note that this is a finding based on observations in the real world. This is not a tightly controlled lab experiment," said the paper's first author Ben Bond-Lamberty of the Joint Global Change Research Institute, a partnership between Pacific Northwest National Laboratory and the University of Maryland.

The team relied on the Global Soil Respiration Database that recorded soil respiration from more than 1,500 studies around the globe and FLUXNET that collected data from more than 500 towers around the world recording information about temperature, rainfall and other factors.

Soil respiration describes how microbes and plants in the soil take in substances like carbon to survive, then give off carbon dioxide, according to the study.

When plants and microbes in soil take in carbon as food, they convert some of it to other gases much like we do when we breathe. As temperatures rise, soil respiration increases.

In the 25-year span of the study, the proportion of soil respiration that is due to microbes increased from 54 to 63 percent.

Warmer temperatures can prompt more microbial action, potentially resulting in more carbon being released from carbon pools on land into the air.

"Depending on how other components of the carbon cycle might respond due to climate warming, these soil changes can potentially contribute to even higher temperatures due to a feedback loop," said Bond-Lamberty.

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#1. To: Tatarewicz (#0)

Carbon is good.

CO2 is a nutrient.

Grass and trees just eat it up.

Of all the enemies to public liberty war is, perhaps, the most to be dreaded. - James Madison

randge  posted on  2018-08-02   9:23:07 ET  Reply   Trace   Private Reply  


#2. To: Tatarewicz (#0)

WOW!

They have discovered radiation!

What next? Will it be that water is wet?

++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ In the entire history of the world,the only nations that had to build walls to keep their own citizens from leaving were those with leftist governments.

sneakypete  posted on  2018-08-02   9:57:40 ET  Reply   Trace   Private Reply  


#3. To: Tatarewicz (#0)

Although there are short-term (100,000 years) fluctuation the earth has been losing CO2 from the atmosphere for billions of years and is now CO2 starved. The earth need more, not less, CO2 in the atmosphere. 500 millions years ago there was 12 to 20 times as much CO2 in the atmosphere and life on earth was thriving and the temperature was about the same as present day temperatures.

DWornock  posted on  2018-08-02   13:31:35 ET  Reply   Trace   Private Reply  


#4. To: DWornock (#3)

But is CO2 production depleting earth's oxygen supply?

Tatarewicz  posted on  2018-08-03   2:27:31 ET  Reply   Trace   Private Reply  


#5. To: DWornock (#3)

The great Rivero on his What Really Happened broadcast is great at busting the global warming cult, ptly by asserting that CO2 is an environmental boon. Plants turn it into oxygen, of course, but CO2 works against the greenhouse effect as well -- not for it as huckstered by Algore et al.

_____________________________________________________________

USA! USA! USA! Bringing you democracy, or else! there were strains of VD that were incurable, and they were first found in the Philippines and then transmitted to the Korean working girls via US military. The 'incurables' we were told were first taken back to a military hospital in the Philippines to quietly die. – 4um

NeoconsNailed  posted on  2018-08-03   2:38:38 ET  Reply   Trace   Private Reply  


#6. To: Tatarewicz (#4)

But is CO2 production depleting earth's oxygen supply?

CO2 is a trace gas. Our atmosphere is 20.95% oxygen and only 0.039% carbon dioxide. Even if you created 10 times as much CO2 by converting carbon and O2 into CO2, the atmospheres would still have 20.6% oxygen, a reduction of only 2%.

DWornock  posted on  2018-08-04   20:44:54 ET  Reply   Trace   Private Reply  


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