乐动体育投注APPTerra Preta（字面意思是“黑土”）是通过哥伦比亚原住民通过纳入土壤中的大量烧焦的残留物（木炭）与富含营养物质的富含碳的残留物而形成的高肥沃和碳富含土壤的名称(e.g. human and animal manure (rich in P and N), waste including mammal and fish bones (rich in P and Ca), ash residues of incomplete combustions (rich in Ca, Mg, K, P and charcoal), kitchen and garden waste etc.). The charcoal black carbon, due to its polycyclic aromatic structure, is chemically and microbiologically stable and persists in the environment over centuries. Over the time, the persistent black carbon molecules get partly oxidized produces carboxylic groups on the edges of the black carbon backbones which act as a trap for nutrients in the soil preventing them from being washed out. Terra preta has a large potential for preserving fertile soils and for carbon sequestration from the atmosphere as it acts as a long-term carbon sink.
乐动体育投注APPTerra Preta Satitation.
乐动体育投注APPT.erra preta sanitation is the concept of reuse of organic wastes (e.g. garden and kitchen wastes, human faeces and urine) by producing highly fertile and long lasting terra preta soils in a four-step process: (1) collection, (2) lacto-fermentation, (3) addition of charcoal and vermicomposting, (4) incorporation of terra preta compost into soils.
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