The Disparity in the Abundance of C3/C4 Plants Estimated Using the Carbon Isotopic Composition of Soil Carbonates, Soil Organic Matter, Nodule Organic Matter and Bio-markers

Vijayananda Sarangi1, Prasanta Sanyal1 and Shailesh Agrawal2, (1)Indian Institute of Science Education and Research Kolkata, Kolkata, India, (2)Birbal Sahni Institute of Palaeosciences, Lucknow, India