<div dir="ltr"><div><i>Most of the charcoal in nature is from wild fires and combustion of
biomass in general. When charcoal forms it is typically deposited in the
soil.“ From a chemical perspective, no one really thought it dissolves,
but it does,” Jaffé says. “It doesn’t accumulate like we had for a long
time believed. Rather, it is transported into wetlands and rivers,
eventually making its way to the oceans.”</i><br><br>If biomass is burned, and if afterwards the charcoal from this burning remains on the surface of the ground, how is it supposed to accumulate in the soil? How is charcoal "typically deposited in the soil" from a wild fire? Wildfires do not till the soil and mix in char in a uniform manner. <br>
<br>If biochar is properly mixed into the top soil through human activity, this is an entirely different matter. It seems likely that it would be washed away in a large rainfall event only if the top soil in which it were incorporated were washed away.<br>
<br></div><div>Thanks.<br></div><div>Paul Olivier<br></div><div><div><br><br></div><div><div class="gmail_quote">---------- Forwarded message ----------<br>From: <b class="gmail_sendername">Crispin Pemberton-Pigott</b> <span dir="ltr"><<a href="mailto:crispinpigott@gmail.com">crispinpigott@gmail.com</a>></span><br>
Date: Sun, Apr 21, 2013 at 5:55 AM<br>Subject: [Stoves] Biochar is making its way into the oceans, apparently<br>To: Discussion of biomass cooking stoves <<a href="mailto:stoves@lists.bioenergylists.org">stoves@lists.bioenergylists.org</a>><br>
<br><br><div link="#0563C1" vlink="#954F72" lang="EN-CA"><div><p>Dear Friends of Biochar<u></u><u></u></p><p><u></u> <u></u></p><p>This will probably be of interest. I am posting here because of the biochar enthusiasm and because I am not subscribed to any biochar lists. <u></u><u></u></p>
<p><u></u> <u></u></p><p>Regards<u></u><u></u></p><p><u></u> <u></u></p><p>Crispin<u></u><u></u></p><p><u></u> <u></u></p><p>+++++++<u></u><u></u></p><p><u></u> <u></u></p><p>Copied from<u></u><u></u></p><p><span><a href="http://wattsupwiththat.com/2013/04/19/something-else-to-worry-about-carbon-i" target="_blank">http://wattsupwiththat.com/2013/04/19/something-else-to-worry-about-carbon-i</a>n-the-water/#more-84542<u></u><u></u></span></p>
<p><span><u></u><span style="text-decoration:none"> </span><u></u></span></p><p> “…According to the authors, the results imply that greater consideration must be given to carbon sequestration techniques (the process of capture and long-term storage of atmospheric carbon dioxide). Biochar addition to soils is one such technique. Biochar technology is based on vegetation-derived charcoal that is added to agricultural soils as a means to store carbon.<u></u><u></u></p>
<p><u></u> <u></u></p><p>Although promising in storing carbon, Jaffé points out that as more people implement biochar technology, they must take into consideration the potential dissolution of the charcoal to ensure these techniques are actually environmentally friendly.<u></u><u></u></p>
<p><u></u> <u></u></p><p>Jaffé and Dittmar agree that there are still many unknowns when it comes to the environmental fate of charcoal, and both plan to move on to the next phase of the research. They have proven where the charcoal goes. Next, they want to answer how this happens and what the environmental consequences are.<u></u><u></u></p>
<p>The better scientists can understand the processes and the environmental factors controlling it, the better the chance of developing strategies for carbon sequestration and help mitigate climate change.”<u></u><u></u></p>
<p><u></u> <u></u></p><p>Source: <a href="http://www.mpg.de/7112434/charcoal_oceans" target="_blank">http://www.mpg.de/7112434/charcoal_oceans</a><u></u><u></u></p></div></div><br>_______________________________________________<br>
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