中国农业科学2011，Vol.44Issue(22)：4627-4635,9.DOI:10.3864/j.issn.0578-1752.2011.22.009
大气CO2浓度升高和氮肥管理对稻麦轮作系统土壤线虫群落组成的影响
Effect of Elevated Atmospheric CO2 and N Fertilization on Soil Nematode Community in a Rice-Wheat Rotation System
摘要
Abstract
[Objective] The effect of elevated CO2 and N fertilization on the below-ground ecosystem was studied. [Method] A study was conducted in the rice-wheat rotational FACE platform in China to quantify the effect of elevated CO2 and N fertilization on soil nematode community. [Result] Thirty-five genera and 15 functional guilds were observed in this system, and Acrobeloides, Eucephalobus, Filenchus and Hirschmanniella were dominant genera. Filenchus and Eucephalobus were sensitive to the treatment of elevated CO2 and N fertilization, respectively. Under the FACE condition, the abundance of total nematodes, functional guilds of Fu2 and Om4 increased significantly. The interactive treatment of elevated CO2 and N fertilization influenced the abundance of Fu2. [Conclusion] Elevated CO2 and N fertilization resulted in the changes of soil nematode community structure and decomposition pathways. Under the high N conditions (HN), elevated CO2 decreased the channel index (CI), and bacteria dominated decomposition pathway was found in the FACE (HN) treatments in the wheat season. Different N fertilization managements influenced the values of structural index (SI), and the higher SI was observed under the low N condition (LN), which suggested a stable ecologically successional status with less disturbance.关键词
土壤线虫/FACE/氮肥/稻麦轮作Key words
soil nematodes/ FACE/ N fertilization/ rice-wheat rotation system引用本文复制引用
鲍雪莲,李琪,梁文举,朱建国..大气CO2浓度升高和氮肥管理对稻麦轮作系统土壤线虫群落组成的影响[J].中国农业科学,2011,44(22):4627-4635,9.基金项目
中国科学院知识创新工程方向项目(KZCX2-YW-QN403、KZCX3-SW-440)、国家自然科学基金资助项目(30770400) （KZCX2-YW-QN403、KZCX3-SW-440）
