Effects of cultivation on soil microbiological properties in a freshwater marsh soil in Northeast China

被引：28
|
作者：
Zhang Jinbo
Song Changchun
Yang Wenyan
机构：
[1] Chinese Acad Sci, NE Inst Geog & Agr Ecol, Changchun 130012, Jilin, Peoples R China
[2] Chinese Acad Sci, Grad Sch, Beijing 10039, Peoples R China
来源：
SOIL & TILLAGE RESEARCH | 2007年 / 93卷 / 01期
基金：
中国国家自然科学基金;
关键词：
soil microbiological properties; cultivation; Northeast China; Sanjiang Plain;
D O I：
10.1016/j.still.2006.03.025
中图分类号：
S15 [土壤学];
学科分类号：
0903 ; 090301 ;
摘要：
The Sanjiang Plain has become an intensive area of land use/cover change in China. However, little is known about the effect of cultivation on soil microbiological properties in this freshwater marsh ecosystem. Our objective was to evaluate the effect of cultivation on mineralizable, microbial biomass, and total C in the Sanjiang Plain of Northeast China. Soil microbial biomass C (MBC) was 4346 +/- 309 mg kg(-1) in undisturbed marsh and 229 mg kg(-1) in soil cultivated for 15 years. Undisturbed marsh soil had the highest microbial quotient (3.64%), which declined with increasing cultivation time (R-2 = 0.97, p < 0.01). Metabolic quotient increased with increasing cultivation time. Soil C mineralization in undisturbed marsh was 3.5 times that in soil cultivated for I year, and was 12 times that in soil cultivated for 15 years. Cultivation strongly affected measured soil microbiological properties. (c) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码：231 / 235
页数：5
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