carbon of Q. serrata forest during the study period (2010-2013) was 130.745 ton C ha-1. The aboveground part of plant, belowground part of plant, forest floor litter layer, and organic carbon in soil was 50.041, 12.510, 4.075, and 64.119 ton C ha-1, respectively. The total average of carbon fixation in plants from photosynthesis was 4.935 ton C ha-1 yr-1 and organic carbon released from soil respiration to microbial respiration was 3.972 ton C ha-1 yr-1. As a result, the net ecosystem production of Q. serrata forest estimated from carbon fixation and soil respiration was 0.963 ton C ha-1 yr-1. Therefore, it seems that Q. serrata forest can act as a sink that absorbs carbon from the atmosphere. The carbon uptake of Q. serrata forest was highest in stem of the plant and the research site had young forest which had many trees with small diameter at breast height (DBH). Consequentially, it seems that active matter production and vigorous carbon dioxide assimilation occurred in Q. serrata forest and these results have proven to be effective for Q. serrata forest to play a role as carbon storage and NEP.
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