### CDM Calculation

When speaking of phytomass, tend to believe that this consists of trees in foot of a forest, however, as we shall see below in a wooded area 5 main reservoirs of carbon can be identified: FA-phytomass air: trunks, branches, twigs, leaves, underbrush FS – underground phytomass: roots H-Hojarasca or mulch NM-decomposition (dead organic matter): dead standing or fallen SO-soil organic trees see explanatory image directly on the blog to analyze in more detail the phytomass is possible to establish more subdivisions to those mentioned aboveHowever, for the scope of this article, the previous concepts are sufficient. How to calculate the CO2 fixed by vegetation the calculation of the CO2 fixed by different plant formations is a complex process, since it is necessary to take into account the climatic conditions of the area (rain, humidity, evaporation, evapotranspiration, etc), the age of the forest in question, the type of soil and edaphic characteristics, height above the sea level, etc. However, to have an idea general of how determined, will perform a simple calculation that will allow us a first approach to the subject without many injuries or difficult to digest sophisticated concepts. Nevertheless the above, this calculation sacrifices in part the precision of the obtained result. But as I mentioned previously, it is enough for the subject of this article.

The formula to determine the amount of accumulated CO2 is: source: ipcc where; tCo2/tree: amount of CO2 accumulated VCC timber volume with bark: is the volume with bark from the trunk of the tree without considering branches or roots. D-Densidad: Ton of matter dry tMS/m3 of the freshly cut tree expansion of fiomasa FEB-Factor: volume of phytomass/air Factor a: relationship between aerial phytomass and underground phytomass Factor C: conversion Factor of TMS to tonne of carbon (tC), valued at 0.5 CT / 44/12 tMS: molecular proportion to pass carbon (C) to carbon dioxide (CO2) to the calculose will take as an example the oak White (Quercus humboldtii) for being a timber species in Colombia. The values for the equation son:VCC = 0, 2 m3, D = 0, 57, FEB = 1, 52, R = 0, 22 by applying the equation is that a white oak accumulated 387,56 CO2/tree. With this value, we could estimate a forest of 5000 trees accrue 1.937.848 kg CO2 equivalent to 1.93 tCO2. In another entry, we’ll look at other methodologies and will compare different species to determine their capacity to fix carbon. This informaion is beginning to undertake projects under the CDM clean development mechanism or CDM approach for its acronym in English. Against this subject, legacies of the Kyoto Protocol can extend the information in the entry.