Pedosphere 16(1): 56--63, 2006
ISSN 1002-0160/CN 32-1315/P
©2006 Soil Science Society of China
Published by Elsevier B.V. and Science Press
| Soil C and N pools in Chinese fir and evergreen broadleaf forests and their changes with slash burning in mid-subtropical China |
GUO Jian-Fen1,2 , YANG Yu-Sheng2, CHEN Guang-Shui2, XIE Jin-Sheng3 and LIN Peng1 |
1 College of Life Science, Xiamen University, Xiamen 361005 (China). E-mail: gjf53135@yahoo.com.cn;
2 College of Geography Science, Fujian Normal University, Fuzhou 350007 (China);
3 College of Forestry, Fujian Agriculture and Forestry University, Fuzhou 350002 (China) |
| ABSTRACT |
| Soil organic carbon (C) and total nitrogen (N) pools of a Chinese fir (Cunninghamia lanceolate, (Lamb.) Hook.) (CF) forest, and an evergreen broadleaf (EB) forest located in mid-subtropical, southeastern China, were compared before clearcutting, with the effect of slash burning on organic C and total N in the top 10 cm of soil before and after burning also being evaluated. Prior to clearcutting CF forest had significantly lower (P < 0.05) organic C and total N in the soil (0-100 cm) compared to EB forest with approximately 60% of the C and N at the two forest sites stored at the 0 to 40 cm soil. In post-burn samples of the 0-10 cm depth at 5 days, 1 year, and 5 years for CF and EB forests, significantly lower levels (P < 0.05) of organic C and total N than those in the pre-burn samples were observed. Compared to the pre-burn levels, at post-burn year 5, surface soil organic C storage was only 85% in CF forest and 72% in EB forest, while total N storage was 77% for CF forest and 73% for EB forest. Slash burning caused marked long-term changes in surface soil C and N in the two forest types. |
| Key Words: Chinese fir, evergreen broadleaf forest, slash burning, soil carbon, soil nitrogen |
| Citation: Guo, J. F., Yang, Y. S., Chen, G. S., Xie, J. S. and Lin, P. 2006. Soil C and N pools in Chinese fir and evergreen broadleaf forests and their changes with slash burning in mid-subtropical China. Pedosphere. 16(1): 56-63. |
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