Short Communication: Soil carbon pools in different pasture systems

Francisco M. Jr. Cardozo, Romero F. V. Carneiro, Luiz F. C. Leite, Ademir S. F. Araujo
2016 Spanish Journal of Agricultural Research  
<p><span style="font-family: Times New Roman;"><span style="font-size: medium;">The aim of this study was to assess the carbon pools of a tropical soil where the native forest was replaced with different pasture systems. We studied five pasture production systems, including four monoculture systems with forage grasses such as Andropogon, Brachiaria, Panicum, and Cynodon, and an agroforestry system as well as a native vegetation plot. Greater availability of fulvic acid was detected in the
more » ... tected in the agroforestry system as compared with that in the other systems. Higher lability of C was detected in the Andropogon system during the dry and rainy seasons and during the dry season in Cynodon. During the dry season, all pastures systems showed deficits in the net removal of atmospheric CO<sub>2</sub>. The structure and practices of the agroforestry system enables more carbon to be sequestered in the soil as compared with the monoculture pasture, suggesting that it is an important practice to mitigate climatic change and to improve soil quality.</span></span></p>
doi:10.5424/sjar/2016141-7939 fatcat:krihqpqj3vcczakmuxodzoobw4