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Summary and Conclusions The organic chemistry of soil organic matter (SOM) in ADEs can be looked at at different scales, depending on the type of interest. At an ecological level, operationally defined SOM fractions with different turnover times and / or stability can be separated and characterized. SOM associated with different particle-size fractions vary in composition and turnover time, the sand...
Conclusion Inasmuch as Amazonian Dark Earths (ADE) are anthrosols formed in the past, they are part of the archaeological record and hence merit the attention of geoarchaeology. Moreover, to soil scientists the phenomenon of ADE serves as a model for the sustainable agricultural use of otherwise nutrient-poor acid soils in the humid tropics. SMA is one of many techniques that can be used to study...
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