外源氮输入改变三江平原泥炭沼泽有壳变形虫群落结构

应用生态学报

外源氮输入改变三江平原泥炭沼泽有壳变形虫群落结构

宋理洪^1,2,闫修民^1,2,王可洪^1,2,朱晓艳^1,2,王雪峰¹,吴东辉^1**

(¹中国科学院东北地理与农业生态研究所湿地生态与环境重点实验室，长春 130102； ^2中国科学院大学，北京 100049)

出版日期:2015-02-18 发布日期:2015-02-18

Nitrogen input altered testate amoebae community in peatland of Sanjiang Plain, Northeast China.

SONG Li-hong^1,2, YAN Xiu-min^1,2, WANG Ke-hong^1,2, ZHU Xiao-yan^1,2, WANG Xue-feng¹, WU Dong-hui¹

(¹Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China; ²University of Chinese Academy of Sciences, Beijing 100049, China)

Online:2015-02-18 Published:2015-02-18

摘要/Abstract

摘要：

本文通过野外原位控制试验探讨三江平原外源氮素输入对泥炭沼泽有壳变形虫群落的影响.结果表明：从总体看，低氮浓度（6 g N·m^-2）输入增加了有壳变形虫的生物量，而高浓度(>12 g N·m^-2)的外源氮输入则降低其生物量；在属级水平上，外源氮输入提高了法帽虫属的生物量，降低了鳞壳虫属的生物量；而匣壳虫属的生物量只在低氮输入下显著增加.在物种水平上，氮输入降低了长圆鳞壳虫的生物量，而网匣壳虫和顶足法帽虫的生物量只在低氮浓度下显著增加.表明泥炭沼泽有壳变形虫对外源氮增加的响应具有物种间特异性，有壳变形虫是一类有效的湿地环境指示生物.

Abstract: In the present study, an in situ control experiment was carried out to explore the response of testate amoebae to exogenous nitrogen addition in peatland of Sanjiang Plain. The results showed that nitrogen addition increased the biomass of testate amoebae at lower levels （6 g N·m^-2）, while decreased it at higher levels (>12 g N·m^-2). At genus level, nitrogen addition significantly increased the biomass of Arcella and Phryganella, decreased the biomass of Euglypha. Only lower nitrogen addition significantly increased the biomass of Centropyxis. At species level, nitrogen addition significantly decreased the biomass of Euglypha rotunda, while the biomass of either Centropyxis cassis or Phryganella acropodia was increased by a lower nitrogen addition treatment. This study suggested that the response of peatland testate amoebae to nitrogen addition was species specific, which could potentially be used as an indicator for the environment of peatlands.

宋理洪1,2,闫修民1,2,王可洪1,2,朱晓艳1,2,王雪峰1,吴东辉1**. 外源氮输入改变三江平原泥炭沼泽有壳变形虫群落结构[J]. 应用生态学报.

SONG Li-hong1,2, YAN Xiu-min1,2, WANG Ke-hong1,2, ZHU Xiao-yan1,2, WANG Xue-feng1, WU Dong-hui1. Nitrogen input altered testate amoebae community in peatland of Sanjiang Plain, Northeast China.[J]. Chinese Journal of Applied Ecology.