A spatial research of denitrification and nitrification potential of agricultural soils in relation to fertilization practice

被引:0
|
作者
Guo, H [1 ]
Li, GH [1 ]
Zhang, X [1 ]
Yan, F [1 ]
Zhang, D [1 ]
Lu, C [1 ]
机构
[1] Tsinghua Univ, Dept Environm Sci & Engn, Beijing 100084, Peoples R China
关键词
nitrification; denitrification; N(2)O; fertilizer; groundwater;
D O I
暂无
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
As a crucial step in the N-cycle, denitrification not only provides an important pathway for nitrogen losses from cultivated land, but also helps to prevent excess of nitrate (and nitrite) reaching groundwater. Furthermore, denitrification is often considered to be a major source of N(2)O, which contributes-to global warm and the destruction of stratospheric ozone. Denitrification potential and nitrification potential of soils at different depths beneath four plots, including three differently fertilized plots cultivating celeries and one uncultivated plot (control plot) in Dayu, Kunming City, were studied in the laboratory, and N(2)O emissions from each plot were in-situ monitored, in our study. The application of fertilizers is the dominant factor controlling nitrification potential of soils at a depth of 30 cm below soil surface, which resulted in the highest nitrification potential of the soils of the plot applied by the largest amount of fertilizers. O(2) available and the soil moisture content are the important limiting factors for nitrification of soils in. the profiles. However, not fertilizer application, but the soil moisture content is the dominant factor controlling denitrification rate in soils at a depth of 30 cm below soil surface. Denitrification potential decreased in the soils at depths between 30 and 100 cm below soil surface and increased at depths greater than 100 cm below soil surface with an increase of the soil depth. This decrease is affected by a decrease in the size of the denitrification community with depth rather than solely a limitation of substrate. The increase Was probably caused by groundwater, which would favor the propagation of the denitrification community. Chemical fertilizer application also stimulated N(2)O emission. In addition to N(2)O, N(2) was produced by denitrification.
引用
收藏
页码:179 / 185
页数:7
相关论文
共 38 条
  • [1] Denitrification in arable soils in relation to their physico-chemical properties and fertilization practice
    Simek, M
    Cooper, JE
    Picek, T
    Santrucková, H
    [J]. SOIL BIOLOGY & BIOCHEMISTRY, 2000, 32 (01): : 101 - 110
  • [2] NITRIFICATION ACTIVITY IN SUBMERGED SOILS AND ITS RELATION TO DENITRIFICATION LOSS
    KATYAL, JC
    CARTER, MF
    VLEK, PLG
    [J]. BIOLOGY AND FERTILITY OF SOILS, 1988, 7 (01) : 16 - 22
  • [3] Nitrous oxide production by denitrification and nitrification in temperate forest, grassland and agricultural soils
    Ambus, P
    [J]. EUROPEAN JOURNAL OF SOIL SCIENCE, 1998, 49 (03) : 495 - 502
  • [4] Plant and soil effects on denitrification potential in agricultural soils
    Malique, Francois
    Ke, Piaopiao
    Boettcher, Juergen
    Dannenmann, Michael
    Butterbach-Bahl, Klaus
    [J]. PLANT AND SOIL, 2019, 439 (1-2) : 459 - 474
  • [5] Plant and soil effects on denitrification potential in agricultural soils
    François Malique
    Piaopiao Ke
    Jürgen Boettcher
    Michael Dannenmann
    Klaus Butterbach-Bahl
    [J]. Plant and Soil, 2019, 439 : 459 - 474
  • [6] Soil properties influencing the denitrification potential of Flemish agricultural soils
    Karoline D'Haene
    Edwin Moreels
    Stefaan De Neve
    Barbara Chaves Daguilar
    Pascal Boeckx
    Georges Hofman
    Oswald Van Cleemput
    [J]. Biology and Fertility of Soils, 2003, 38 : 358 - 366
  • [7] Soil properties influencing the denitrification potential of Flemish agricultural soils
    D'Haene, K
    Moreels, E
    De Neve, S
    Daguilar, BC
    Boeckx, P
    Hofman, G
    Van Cleemput, O
    [J]. BIOLOGY AND FERTILITY OF SOILS, 2003, 38 (06) : 358 - 366
  • [8] Long-term metal pollution shifts microbial functional profiles of nitrification and denitrification in agricultural soils
    Lu, Lu
    Chen, Chen
    Ke, Tan
    Wang, Min
    Sima, Matthew
    Huang, Shan
    [J]. SCIENCE OF THE TOTAL ENVIRONMENT, 2022, 830
  • [9] Potential nitrification and factors influencing nitrification in pine forest and agricultural soils in Central Java']Java, Indonesia
    Krave, AS
    van Straalen, NM
    van Verseveld, HW
    [J]. PEDOBIOLOGIA, 2002, 46 (06) : 573 - 594
  • [10] Denitrification potential of riparian soils in relation to multiscale spatial environmental factors: a case study of a typical watershed, China
    Jianbing Wei
    Hao Feng
    Quanguo Cheng
    Shiqian Gao
    Haiyan Liu
    [J]. Environmental Monitoring and Assessment, 2017, 189