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Carbon cycling of alpine tundra ecosystems on Changbai Mountain and its comparison with arctic tundra |
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| Authors: | Limin Dai Gang Wu Jingzhu Zhao Hongmei Kong Guofan Shao and Hongbing Deng |
| Institution: | 1. Department of Systems Ecology, Research Center of Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China 2. Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China 3. Department of Forestry and Natural Resources, Purdue University, West Lafayette 47907, USA |
| Abstract: | The alpine tundra on Changbai Mountain was formed as a left-over ‘island’ in higher elevations after the glacier retrieved from the mid-latitude of Northern Hemisphere to the Arctic during the fourth ice age. The alpine tundra on Changbai Mountain also represents the best-reserved tundra ecosystems and the highest biodiversity in northeast Eurasia. This paper examines the quantity of carbon assimilation, litters, respiration rate of soil, and storage of organic carbon within the alpine tundra ecosystems on Changbai Mountain. The annual net storage of organic carbon was 2092 t/a, the total storage of organic carbon was 33457 t, the annual net storage of organic carbon in soil was 1054 t/a, the total organic carbon storage was 316203 t, and the annual respiration rate of soil was 92.9% and was 0.52 times more than that of the Arctic. The tundra-soil ecosystems in alpine Changbai Mountain had 456081 t of carbon storage, of which, organic carbon accounted for 76.7% whereas the mineral carbon accounted for 23.3%. |
| Keywords: | carbon cycling alpine tundra Changbai Mountain |
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