Carbon Sequestration in China's Largest Lake
Xu, H., Lan, J., Liu, B., Sheng, E. and Yeager, K.M. 2013. Modern carbon burial in Lake Qinghai, China. Applied Geochemistry 39: 150-155.
Working at Lake Qinghai "in the arid/semi-arid region of the northeastern Qinghai-Tibet plateau, where the Asian summer monsoon, westerly jet stream, and Asian winter monsoon converge," Xu et al. estimated modern carbon burial, "as well as the carbon influxes from different origins and discuss their possible linkages to climatic changes."
The major findings of the group of five researchers were (1) "the organic carbon burial rate in sediments of Lake Qinghai is similar to those in large lakes worldwide," (2) "organic carbon in lake sediments is mainly deposited from particulate organic carbon in lake water," of which (3) "near 80% is of terrestrial origin," (4) "the inorganic carbon burial rate is slightly higher than that of organic carbon," (5) "about 70% of the riverine dissolved inorganic carbon is directly/indirectly withdrawn from atmospheric CO2," (6) "the carbon burial rate in lake sediment is higher during warm-wet periods," and, as a result, (7) "lakes in similar regions may play an increasingly important role in global carbon cycling as global warming proceeds." Such findings illuminate yet another means by which Earth's biosphere and hydrosphere are combining forces to retard the rate-of-rise of CO2-induced global warming.
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