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  • From: joao pedro goncalves <joaovox@gmail.com>
  • To: permaculture <permaculture@lists.ibiblio.org>
  • Subject: Re: [permaculture] Fwd: [SANET-MG] Fwd: [UKFG list] Organic farming can reverse the agriculture ecosystem from a carbon source to a carbon sink
  • Date: Wed, 13 May 2015 23:50:04 +0100

In our every day practice, by using forest shrubs (some legumes) as animal
bedding we reduce fuel for fires,
crop residues and animal droppings are piled up in a daily layer,
a fermentation results that raises the animal shed temperature, specially
helpful during chilly winter.

- read here about how we have been doing it, in steep and rocky, warm
temperate, central Portugal mountains

http://permacultureglobal.org/post_projects/3386



On Tue, May 12, 2015 at 2:07 PM, Lawrence London <lfljvenaura@gmail.com>
wrote:

> ---------- Forwarded message ----------
> From: Jonathan Latham <jrlatham@bioscienceresource.org>
> Date: Wed, Apr 29, 2015 at 2:43 PM
> Subject: Fwd: [UKFG list] Organic farming can reverse the agriculture
> ecosystem from a carbon source to a carbon sink
>
> Best wishes
> Jonathan
>
> http://www.eurekalert.org/pub_releases/2015-04/scp-ofc042915.php
> Organic farming can reverse the agriculture ecosystem from a carbon source
> to a carbon sink
>
> > SCIENCE CHINA PRESS
>
> > IMAGE: THIS IMAGE SHOWS PROCESSES OF GREENHOUSE GASES EMISSION AND
> SEQUESTRATION IN THE STUDIED AGRO-ECOSYSTEM. view more
> >
> > CREDIT: (c)SCIENCE CHINA PRESS
> >
> > Approximately 35% of global greenhouse gases (GHGs) come from
> agriculture. Some argues that human can reverse global worming by
> sequestering several hundred billion tons of excess CO2 through
> regenerative, organic farming, ranching and land use. Increasing the soil's
> organic content will not only fix carbon and reduce emissions, it will also
> improve the soil's ability to retain water and nutrients and resist pests
> and droughts.
> >
> > To mitigate GHG emissions and retain soil fertility, organic agriculture
> might be a wise choice for decreasing the intensive use of synthetic
> fertilizers, protecting environments, and further improving crop yields.
> Recent research showed that replacing chemical fertilizer with organic
> manure significantly decreased the emission of GHGs. Organic farming can
> reverse the agriculture ecosystem from a carbon source to a carbon sink.
> >
> > To explore the potential of farmlands acting as a carbon sink without
> yield losses, Jiang Gaoming, a professor at the Chinese Academy of
> Sciences' Institute of Botany, conducted an experiment on a temperate
> eco-farm in eastern rural China. Crop residues were applied to cattle feed
> and the composted cattle manure was returned to cropland with a winter
> wheat and maize rotation. Crop yield and greenhouse gas (GHG) emissions
> were carefully calculated according to the Intergovernmental Panel on
> Climate Change (IPCC) Guidelines for National Greenhouse Gas Inventories
> 2006.
> >
> > This study showed that replacing chemical fertilizer with organic manure
> significantly decreased the emission of GHGs. Yields of wheat and corn also
> increased as the soil fertility was improved by the application of cattle
> manure. Totally replacing chemical fertilizer with organic manure decreased
> GHG emissions, which reversed the agriculture ecosystem from a carbon
> source (+ 2.7 t CO2-eq. hm-2 yr-1) to a carbon sink (- 8.8 t CO2-eq. hm-2
> yr-1).
> >
> > Making full use of crop residues as forage for cattle, collecting and
> composting cattle manure, and replacing part of the chemical fertilizer
> input with organic manure have been successfully shown to be ideal choices
> to reduce energy waste and cut GHG emissions without crop yield losses. A
> combination of organic manure and chemical fertilizer demonstrated the best
> result in improving soil quality and crop yields, while decreasing GHG
> emissions. Solely utilizing chemical fertilizer on the farmland not only
> led to increased GHG emissions, but also deteriorated the quality of the
> soil.
>
> > This research was jointly funded by the Key Strategic Project of the
> Chinese Academy of Sciences (KSZD-EW-Z-012-2) and the National Science and
> Technology Support Program, China (No.2012BAD14B00).
> >
> > See the article:
> >
> > Haitao Liu, J.L., Xiao Li, Yanhai Zheng, Sufei Feng, Gaoming Jiang. 2015.
> Mitigating greenhouse gas emissions through replacement of chemical
> fertilizer with organic manure in a temperate farmland. Science Bulletin,
> 60(6), 598-606.
> >
> > Science China Press
> >
> > http://www.scichina.com/
>
> > You received this message because you are subscribed to the UK Food
> Group's discussion list. ukfoodgroup@lists.riseup.net
> > If you don't want to be on this list, send an email to:
> > ukfoodgroup-unsubscribe@lists.riseup.net
>
> Jonathan Latham, PhD
> Executive Director
> The Bioscience Resource Project
> Ithaca, NY 14850 USA
>
> www.independentsciencenews.org
> and
> www.bioscienceresource.org
>
> jrlatham@bioscienceresource.org
> Skype: jonathanlatham2
> Tel: 1-607-319-0279
>
> "The conscious and intelligent manipulation of the organized habits and
> opinions of the masses is an important element in democratic society. Those
> who manipulate this unseen mechanism of society constitute an invisible
> government which is the true ruling power of our country."--Edward Bernays,
> Propaganda
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--
João Gonçalves

"Ao comprar ou consumir de forma ética também está a intervir na paisagem e
a decidir quem tem trabalho."

"Eating is an agricultural act" - "Comer é um acto agrícola" - Wendell
Berry

"Permacultura (Cultura Permanente) é um sistema ético de design ecológico."

(+351) 96 96 80 009
Chão Sobral - Oliveira do Hospital - Serra do Açor - Portugal
casaverdeamoreiras.blogspot.pt
http://permacultureglobal.com/users/902-joao-goncalves
http://chaosobral.org/index_pt.htm
http://www.youtube.com/joaovox
http://agricultura-familiar-tradicional.blogspot.pt
https://picasaweb.google.com/joaovox
http://picasaweb.google.pt/uniprochaosobral

Para descobrir:
Documentário "Alface" na Aldeia das Amoreiras
http://vimeo.com/58999047
Permacultura na Serra do Açor - Portugal
http://permaculturinginportugal.net/blog/
"Comida que nunca acaba" / Permacultura no Malawi
http://www.neverendingfood.org/
Centro de Ecologia Integral
http://www.integralecology.org
Nyumbani - Kenya
http://www.nyumbani.org/about-us




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