Native and exotic tree leaves contributions to formation of different soil organic matter pools
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SubjectAtlantic Rainforest; Isotopic Dilutiuon; Minas Gerais; Soil Organic Carbon; Soil Organic Matter
Deforestation around the world contributes to climate change and soil quality loss. The Atlantic Forest in Brazil has been deforested by 93%. Leaf litter from 16 native trees to the Atlantic Forest and Eucalyptus was decomposed in 14C soil and 3 soil organic matter (SOM) pools were analyzed. It was found that Paineira, Pau Brasil, Eucalyptus and Araticum contributed the highest percentage to stable SOM formation (>25% of total input). Substrate use efficiency, SOM formation efficiency, priming effect (over time) and other variables were used in a correlational analysis to produce P and R significance values. The objectives were (i) to provide information about how native species contribute to Soil Organic Matter formation; and (ii) to provide information about soil organic matter formation processes. The data can be used to help select species for agroforestry and/or native forest planting.
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