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生态学杂志 ›› 2011, Vol. 30 ›› Issue (12): 2857-2862.

• 研究报告 • 上一篇    下一篇

象山港海域硫酸盐还原菌的时空分布及其影响因素

王海丽1,2,杨季芳1,2**   

  1. 1 宁波市微生物与环境工程重点实验室, 浙江宁波 315100;2 浙江万里学院生物与环境学院, 浙江宁波 315100
  • 出版日期:2011-12-08 发布日期:2011-12-08

Spatiotemporal distribution of sulfate-reducing bacteria in Xiangshan Bay and related affecting factors. 

WANG Hai-li1,2, YANG Ji-fang1,2   

  1. 1 Municipal Key Laboratory of Microorganism and Environmental Engineering, Ningbo 315100, Zhejiang, China;2Faculty of Biological & Environmental Science, Zhejiang Wanli University, Ningbo 315100, Zhejiang, China
  • Online:2011-12-08 Published:2011-12-08

摘要: 分别于2007年7月(夏季)、11月(秋季)与2008年1月(冬季)、4月(春季),调查了象山港海域的水样(表层海水和上覆水)及沉积物中的硫酸盐还原菌丰度的时空分布特征及主要影响因素。结果表明,水样及沉积物中硫酸盐还原菌实测值的变化范围为30~2300 cells·ml-1,沉积物中的硫酸盐还原菌数量高于上覆水及表层海水;硫酸盐还原菌丰度的平面分布均呈现不均匀状态,人类开发活动较多的地区明显高于其他站点。根据硫酸盐还原菌数量,对底质进行腐蚀性评价结果表明,象山港大部分范围底质具有中等强度腐蚀性。有机质污染、水温、pH是表层海水中硫酸盐还原菌分布的重要影响因素(P<0.01);上覆水中的硫酸盐还原菌含量与上覆水的营养盐(NO2--N、NH4+-N)呈显著正相关;沉积物中的硫酸盐还原菌含量与沉积物中的石油类呈显著正相关(P<0.05)。

关键词: 树木年代学, 树木年轮气候学, 木材解剖, 林线动态

Abstract: In July (summer) and November (autumn) 2007 and in January (winter) and April (spring) 2008, investigations were made on the spatiotemporal distribution of sulfate-reducing bacteria (SRB) in the seawater (surface water and overlying water) and sediment in Xiangshan Bay, an d the relationships between the SRB abundance and environmental parameters were analyzed. The SRB abundance in the seawater and sediment had an obvious seasonal variation, ranged from 30 to 2300 cells·ml-1, and was higher in the sediment than in the surface water and overlying water. The SRB abundance also had an uneven horizontal distribution, being higher in the areas with more human activities. According to the SRB abundance, the sediments in most parts of the bay were of medium corrosive. Statistical analysis demonstrated that organic pollution, water temperature, and water pH were the main factors affecting the distribution of SRB in the surface water (P<0.01). In the overlying water, the SRB abundance was significantly positively correlated with the water NO2--N and NH4+-N contents, whereas in the sediment, the abundance had a significant positive correlation with the petroleum substances (P<0.05).

Key words: dendrochronology, dendroclimatology, wood anatomy, treeline dynamics.