It is important to accurately assess soil carbon sequestration potential and the global carbon cycle to study effects of topographies and land uses on soil profile organic carbon in subsurface.In Yangou watershed of hilly region of Loess Plateau,based on three topographies(tableland,slopeland,gullyland) and seven land uses(farmland,orchard,secondary grassland,manmade and secondary shrubland and manmade and secondary woodland),53 soil profiles(0-100 cm) in six soil depths up to 898 samples were collected to ...
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