Distribution characteristics of organic matter and total nitrogen in the soils of water-levelfluctuating zone of Three Gorges Reservoir area
Author:
Affiliation:

Clc Number:

Fund Project:

  • Article
  • |
  • Figures
  • |
  • Metrics
  • |
  • Reference
  • |
  • Similar Literature
  • |
  • Cited by
  • |
  • Appendix
  • |
  • Comments
    Abstract:

    The distribution characteristics of organic matter(OM) and total nitrogen(TN) in the soils of water-level-fluctuating zone(WLFZ) of Three Gorges Reservoir were studied during the non-flooded period, while the correlation among the soil physicalchemical characteristics, OM and TN contents was also be analyzed. OM and TN contents in the soils of WLFZ were both fairly low, were 10.70 ± 4.03 and 0.84 ± 0.39 mg/g, respectively; however, they followed the normal distribution. The lower C/N ratio of the soils of WLFZ suggested possibility of releasing of inorganic nitrogen from soil in the WLFZ to overlying water in the flood period. Compared with other study areas, the OM and TN contents were at the low level. The variation coefficients of OM and TN contents of the soil samples of WLFZ were on the low side by comparison with those in control zone. That is why the differences of OM and TN contents among difference WLFZ of study areas could be reduced by cyclic drying and wetting of WLFZ periodically. Correlation analysis showed that pH, oxidation-reduction potential(ORP), TN was significantly and positively correlated with OM. The result indicated that organic nitrogen was the main nitrogen compositions in soils of WLFZ of the study area. Soil C/N ratio was negatively correlated with TN, but insignificantly correlated with OM, suggesting that soil C/N ratio was mainly determined by the content of TN.

    Reference
    Related
    Cited by
Get Citation

郭劲松,黄轩民,张彬,方芳,付川.三峡库区消落带土壤有机质和全氮含量分布特征[J]. Journal of Lake Sciences,2012,24(2):213-219.

Copy
Share
Article Metrics
  • Abstract:
  • PDF:
  • HTML:
  • Cited by:
History
  • Received:October 25,2011
  • Revised:December 05,2011
  • Adopted:
  • Online: June 08,2015
  • Published:
You are the first    Visitors
Address:No.299, Chuangzhan Road, Qilin Street, Jiangning District, Nanjing, China    Postal Code:211135
Phone:025-86882041;86882040     Fax:025-57714759     Email:jlakes@niglas.ac.cn
Copyright © Lake Science, Nanjing Institute of Geography and Lake Sciences, Chinese Academy of Sciences:All Rights Reserved
Technical Support:Beijing Qinyun Technology Development Co., Ltd.

Su Gongwang Security No. 11040202500063

     苏ICP备09024011号-2