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生态学杂志 ›› 2004, Vol. ›› Issue (3): 34-38.

• 研究报告 • 上一篇    下一篇

大气CO2浓度升高对稻田土壤线虫群落的影响

李琪1, 姜勇1, 梁文举1, 朱建国2   

  1. 1. 中国科学院沈阳应用生态研究所, 沈阳, 110016;
    2. 中国科学院南京土壤研究所, 南京, 210008
  • 收稿日期:2003-08-26 修回日期:2003-11-10 出版日期:2004-06-10
  • 基金资助:
    中国科学院知识创新重要方向项目(KZCX-2-408);中国科学院沈阳应用生态研究所创新基金项目(SCXMS0105)资助

Effect of elevated atmospheric CO2 on soil nematode communities in a paddy-field

LI Qi1, JIANG Yong1, LIANG Wenju1, ZHU Jianguo2   

  1. 1. Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China;
    2. Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
  • Received:2003-08-26 Revised:2003-11-10 Online:2004-06-10

摘要: 本试验利用无锡稻麦轮作FACE系统研究平台,开展了稻田土壤线虫群落对大气CO2浓度升高响应的研究。实验中共观测到线虫27科40属,其中短腔属(Brevibucca)、茎属(Ditylenchus)和垫刃属(Tylenchus)为优势属。拔节期稻田土壤线虫总数、食细菌线虫和捕食/杂食线虫对大气CO2浓度升高表现出正响应。食真菌线虫在拔节期和抽穗期对CO2浓度升高表现出负响应,成熟期捕食/杂食线虫对CO2浓度升高表现出负响应。在FACE条件下,植物寄生线虫的潜根属(Hirschmanniella)和散香属(Boleodorus)线虫数量显著增加,对CO2浓度升高敏感.

关键词: 土壤, 转向带法, 条件模拟, 重金属

Abstract: The effect of free-air CO2 enrichment (FACE) on soil nematode communities in a paddy-field ecosystem was conducted.27 families and 40 genera were observed in the nematode suspensions.The total numbers of nematodes,bacterivores,plant-parasites and omnivores-predators exhibited an increasing trend at the rice jointing stage.The numbers of fungivores were lower in the FACE plots than in the ambient plots at the jointing and earing stages.At the ripening stage,the numbers of omnivores-predators exhibited a decreasing trend.Two genera (Hirschmanniella,Boleodorus) of plant-parasites were sensitive to the elevated atmospheric CO2.

Key words: Soil, Turning band method, Conditional simulation, Heavy metal

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