Definition Climatefarming en francais
Definition Climate FarmingClimate farming uses agricultural means to keep carbon dioxide and other greenhouse gasses from escaping into the atmosphere. Like organic farming, climate farming maintains biodiversity and ecological balance on productive, argicultural land. But climate farmers like Hans-Peter Schmidt go a step further and covert leftover organic mass into biochar, a solid carbon compound that can improve soil quality. Biochar production also creates a kind of gas that can then be burned to help generate power. A climate farm could grow food, generate power, and help keep carbon out of the air.
Le climatefarming est souvent décrit comme une méthode agricole au moyen de laquelle du CO2 est prélevé de l’atmosphère et stocké de façon stable dans le sol sous forme de carbone. Ceci pourrait permettre de freiner le changement climatique. Mais le climatefarming, c’est également un concept écologique durable pour l’agriculture du future, qui produira aussi bien des denrées alimentaires que de l’énergie et de l’air propre, encouragera la biodiversité et protégera le paysage.
Au travers de leurs feuilles, les plantes prélèvent du dioxyde de carbone contenu dans l’air et le transforment à l’aide de la lumière, de substances minérales et de l’eau en molécules carboniques. Lorsque la plante meurt ou pourrit, ou si elle est mangée et digérée, les molécules longues de carbone sont de nouveau scindées. Ce processus libère de l’énergie et donc du carbone qui, composé à plus de 99% de CO2, s’évapore dans l’atmosphère. (en savoir plus ...)
Google News: deforestation
Freitag, 19. März 2010
Terra Preta Sanitation: re-discovered from an ancient Amazonian civilisation - integrating sanitation, bio-waste management and agriculture
The re-discovery of a highly efficient low-cost sanitation system from an ancient civilisation in the Amazon combined with the latest development in urine diverting dry sanitation opens new pathways. Research is at the very beginning but results are promising. Application can be performed right away although there are a lot of open questions to fully understand the whole process. Lactic-acid fermentation is working so well and stable provided that inoculation is done. There are few reasons left for the desiccation of faecal matter that is now done in modern dry sanitation with numbers of installations exceeding a million. Adaptation of existing dry toilets is feasible where space requirements for the common double vault systems can be cut to half. The anaerobic, but oxygen-tolerating terra preta sanitation (TPS) offers smell free operation without ventilation pipes. Besides modification of the existing urine diverting dry toilets there are three more development lines for implementation: 1.) Upgrading pit-latrines as used by around two billion people; 2.) Simple bucket toilets with any kind of urine diversion that are closed air tight after defecation and addition of the charcoal with lactic-acid bacteria mixture and finally 3.) Well designed and comfortable urine diverting dry toilets with optional automatic addition of the conditioning/inoculation material. People suffering inadequate or missing sanitation can be served with one of the three types of installations. In the worst of situations as in slum areas a simple plastic bag would also be usable through avoidance of methane-fermentation in the silage process. The inoculation mixture can be multiplied at very low costs, but ground charcoal is a resource that is required. As in all on-site systems participatory planning (NETSSAF, 2008), proper utilisation of the end-products and well organised professional operation and maintenance is crucial for success. Quality of the end product will depend on avoidance of pollution at the source and in order to get good results in usage of the soil the dynamics of soil-plant interaction should be respected (Reckin, 2003). This implies that urine is not applied in a way that results in imbalances of plant nutrition that results to weaker plants. Research on urine treatment in a way that results in a balanced rich soil with a proper C/N-ratio will be crucial to achieve a well-functioning interaction of sanitation, biowaste management and agriculture
H. Factura*, T. Bettendorf*, C. Buzie*, H. Pieplow**, J. Reckin*** and R. Otterpohl*
See also http://bit.ly/deg0mt