Seasonal variations of soil microbial available carbon in four plant communities along the altitude gradient in Wuyi Mountain

doi:10.3969/j.jssn.1000-2006.2009.03.013

JOURNAL OF NANJING FORESTRY UNIVERSITY ›› 2009, Vol. 33 ›› Issue (03): 55-59.doi: 10.3969/j.jssn.1000-2006.2009.03.013

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Seasonal variations of soil microbial available carbon in four plant communities along the altitude gradient in Wuyi Mountain

XU Xia1,3, QUAN Wei1, WANG Jiashe2, FANG Yanhong2, RUAN Honghua1*, YE Jingzhong1

1.Key Laboratory of Forestry Ecological Engineering Jiangsu Province, Nanjing Forestry University, Nanjing 210037, China; 2.Administrative Bureau of Wuyishan National Nature Reserve, Wuyishan 354300, China; 3.University of Oklahoma Norman, Norman OK 730190390, USA

Online:2009-06-18 Published:2009-06-18

Abstract

Abstract: Microbial available carbon (MAC) was one of the most active and important parts of carbon cycle in terrestrial ecosystem. MAC dynamics were examined through a year, using a sequential fumigationincubation procedure, in evergreen broadleaf forest(EBF), coniferous forest(CF), dwarf forest(DF) and alpine meadow(AM), respectively, along the altitude in the natural preserve area in Wuyi Mountain in Fujian province, China, and relationship between MAC and soil moisture, soil temperature, and coil total organic carbon were analyzed. The results indicated: (1) Seasonal variations of microbial available carbon in each site along the altitude was significant both in 0—10 cm and 10—25 cm soil layers. In different types of forests, the magnitude of MAC was in a order of AM, DF, CF and EBF. MAC was significantly higher in the 0—10cm soil layer than that in the 10—25cm’s. (2) There were positive correlations between MAC and soil moisture, soil temperature in each site and different layers. Our study showed that the MAC had obvious variations during a year, it reached the highest in summer, and the lowest in winter. MAC was greatly affected by soil moisture and soil temperature.

CLC Number:

S714
X171.1

XU Xia1,3, QUAN Wei1, WANG Jiashe2, FANG Yanhong2, RUAN Honghua1*, YE Jingzhong1. Seasonal variations of soil microbial available carbon in four plant communities along the altitude gradient in Wuyi Mountain[J]. JOURNAL OF NANJING FORESTRY UNIVERSITY, 2009, 33(03): 55-59.

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Seasonal variations of soil microbial available carbon in four plant communities along the altitude gradient in Wuyi Mountain

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