Nitrification potential of marsh soils from two natural saline-alkaline wetlands

被引：36

作者：

Bai, Junhong ^{[1
]}

Gao, Haifeng ^{[1
]}

Deng, Wei ^{[2
]}

Yang, Zhifeng ^{[1
]}

Cui, Baoshan ^{[1
]}

Xiao, Rong ^{[1
]}

机构：

[1] Beijing Normal Univ, Sch Environm, State Key Lab Water Environm Simulat, Beijing 100875, Peoples R China

[2] Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China

来源：

BIOLOGY AND FERTILITY OF SOILS | 2010年 / 46卷 / 05期

基金：

中国国家自然科学基金;

关键词：

Nitrification potential; Relative nitrification index; Potential net nitrification rate; Marsh soil; Saline-alkaline wetland; MICROBIAL COMMUNITY STRUCTURE; NITROGEN MINERALIZATION; DENITRIFICATION; FOREST; SEDIMENT; DYNAMICS; RATES;

D O I：

10.1007/s00374-010-0441-4

中图分类号：

S15 [土壤学];

学科分类号：

0903 ; 090301 ;

摘要：

Few studies have been carried out on nitrification potential of marsh soils in natural saline wetlands with high alkalinity. The nitrification potentials of a closed wetland and an open wetland were monitored by an aerobic incubation at 25 degrees C for 28 days. The relative nitrification index (RNI, NO(3)-N/NO(3)-N+NH(4)(+)-N) rapidly increased with time in both wetlands and decreased with depth in soil profiles in both wetlands within the first 21 days. Nitrification proceeded much faster in the closed wetland than in the open wetland. The higher rate of nitrogen removal in closed wetlands than open wetland was probably due to the fast nitrification followed by denitrification or leaching loss.

引用

页码：525 / 529

页数：5

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