欢迎访问《生态学杂志》官方网站,今天是 分享到:

生态学杂志 ›› 2005, Vol. ›› Issue (3): 273-277.

• 研究报告 • 上一篇    下一篇

南京市不同功能城区表土微生物碳氮与酶活性分析

王焕华1, 李恋卿1, 潘根兴1, 吴新民2   

  1. 1. 南京农业大学农业资源与生态环境研究所, 南京, 210095;
    2. 池州师范专科学校, 池州, 247100
  • 收稿日期:2004-02-10 修回日期:2004-07-13 出版日期:2005-03-10
  • 通讯作者: 潘根兴
  • 基金资助:
    教育部学术骨干计划资助项目(2002012)

Topsoil microbial carbon and nitrogen and enzyme activity of different city zones in Nanjing,China

WANG Huanhua1, LI Lianqing1, PAN Genxing1, WU Xinmin 2   

  1. 1. Institute of Resources, Ecosystem and Environment of Agriculture, Nanjing Agricultural University, Nanjing 210095, China;
    2. Chizhou Junior Teachers College, Chizhou 247100, China
  • Received:2004-02-10 Revised:2004-07-13 Online:2005-03-10

摘要: 城市土壤环境污染及其对城市环境质量与社会生活的影响,已引起公众重视,但对其生境问题了解不够.将南京城市土壤划分为6种功能区(工业区、交通商业区)、老居民区、新开发区、城市广场和风景区,分析了各功能区土壤的微生物量碳、氮及脲酶和过氧化氢酶活性,探讨其对城市土壤环境质量的指示意义.结果表明,微生物量以公共绿地、风景区较高,以新开发区和交通商业区为最低.主成分分析表明,脲酶活性、微生物量碳、过氧化氢酶活性对公因子的贡献最大.与自然土壤相比,南京城市土壤碳氮比、Cmic/Corg变化范围均增大,表明土壤微生物区系受到人为活动较大的干扰.

Abstract: Much attention has been paid to the pollution of urban soils and its impact on environmental quality and social development.But little has been known about its microbial habitat.In this paper,the Nanjing city was divided into six zones as smelter industry,inner commercial,inner residence,newly developed,urban green area and preserved scenic zones.The microbial biomass C and N,urease activity and catalase activity in these six zones were analyzed and the influencing factors on their distribution and variation were discussed.High contents of microbial biomass C (Cmic) and N (Nmic) was found in the green area and preserved scenic zones,while low contents in the newly developed and the inner commercial zones.Principal component analysis showed that urease activity,Cmic and catalase activity were the main parameters contributing dominantly to the principle factors.Compared with the results of agricultural soils reported elsewhere,the urban soils of Nanjing city had wide variation both in the ratio of C/N and in Cmic/Corg.All these results supported that the urban environment was largely disturbed by anthropogenic stress and the microbial community was greatly modified.

Key words: Di-n-butyl phthalate, Biodegradation, Mangrove

中图分类号: