南京林业大学学报(自然科学版) ›› 2009, Vol. 33 ›› Issue (04): 48-52.doi: 10.3969/j.jssn.1000-2006.2009.04.010

• 研究论文 • 上一篇    下一篇

武夷山不同海拔土壤水溶性有机碳的含量特征

周焱1,徐宪根1,阮宏华1*,汪家社2,方燕鸿2,吴焰玉2,徐自坤2   

  1. 1.南京林业大学,江苏省林业生态工程重点实验室,江苏南京210037; 2.福建武夷山国家级自然保护区管理局,福建武夷山354300
  • 出版日期:2009-08-18 发布日期:2009-08-18
  • 基金资助:
    收稿日期:2008-08-04修回日期:2009-01-12基金项目:国家自然科学基金资助项目(30370256;30670313);国家林业局公益性行业(林业)科研项目(WB200704005102)作者简介:周焱(1975—),博士生。*阮宏华(通讯作者),教授,研究方向为全球气候变化与土壤碳循环。Email: hruan1690@yahoo.com。引文格式:周焱,徐宪根,阮宏华,等. 武夷山不同海拔土壤水溶性有机碳的含量特征[J]. 南京林业大学学报:自然科学版,2009,33(4):48-52

Content character of WSOC among four vegetation types along an elevation gradients in Wuyi Mountain

ZHOU Yan1, XU Xiangen1, RUAN Honghua1*, WANG Jiashe2, FANG Yanhong2, WU Yanyu2, XU Zikun2   

  1. 1.Jiangsu Key Laboratory of Forestry and Ecological Engineering, Nanjing Forestry University, Nanjing 210037, China; 2.Administrative Bureau of Wuyishan National Nature Reserve, Wuyishan 354300, China
  • Online:2009-08-18 Published:2009-08-18

摘要: 土壤水溶性有机碳(WSOC)是土壤碳循环中最活跃的组成部分之一。采用TOCVCPN总有机碳仪测定了武夷山4个典型海拔地的植被土壤水溶性有机碳的含量,分析了土壤水溶性有机碳与土壤因子的关系。结果表明:不同林分间土壤水溶性有机碳含量随海拔上升而增加,随土层深度的增加而减少;土壤水溶性有机碳含量占总有机碳的比值介于0.02%~0.16%,以高山草甸10~25 cm土层最高,常绿阔叶林25~40 cm土层最低;不同海拔梯度的土壤水溶性有机碳与总有机碳、微生物量碳、土壤湿度、全氮存在显著线性正相关,与土壤温度、pH之间无相关性。

Abstract: Soil watersoluble organic carbon (WSOC) is an important component in soil carbon cycling. The soil watersoluble organic carbon among four vegetation types with an elevation gradients and the correlations between soil WSOC and some other soil factors were analyzed. The results revealed: (1)The amount of WSOC became bigger when the elevation went higher, and it became smaller when the soil layers became deeper; (2)The percentage of WSOC to TOC varied from 0.02 to 0.16, the highest was Alpine meadow soil layer of 10—25 cm, the lowest was evergreen broadleaf forest 25—40 cm soil layer; (3)In each site and different soil layers, WSOC positively correlated with TOC, SMBC, soil moisture, and TN, respectively. However, WSOC was not found to be associated with soil temperature and pH. The results provided theoretical foundation for further elucidate soil carbon circle character among different vegetation types with an elevation gradients.

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