3) differences diversity and density of speciesThe difference, diversity and density of species (density) affects carbon retention in the soil in areas where there is a difference of 2 types of species found that the soil in that area, planting pine trees (Pinus sylvestris L.) with twice the carbon retention (95-140 Mg ha-1) of soil in the area where the plant genus oak (Pyranean OakQuercus pyrenaica Willd) (40-80 Mg ha-1), which is associated with the rate of fall of the scrap plant. It also found that organic matter found in areas with pine trees planted to organic compounds decomposition rather than organic crops in the genus oak. Make carbon retention in soil are in the area, planting pine trees than in areas where the plant genus oak (Diaz-Pines et al., 2011) and in areas where there is diversity and density of species often have more soil carbon retention in a diversity of areas and species density by Saha et al's study (2009) found that small (0.4 ha) but with the diversity and density of species at least (108.2 Mg ha-1).
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