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不同种植年限转基因抗虫棉对土壤中小型节肢动物的影响
引用本文:李孝刚,李孝刚,刘标,曹伟,徐文华,方志翔,孟军,郑央萍,韩正敏.不同种植年限转基因抗虫棉对土壤中小型节肢动物的影响[J].土壤学报,2011,48(3):587-593.
作者姓名:李孝刚  李孝刚  刘标  曹伟  徐文华  方志翔  孟军  郑央萍  韩正敏
作者单位:1. 环境保护部南京环境科学研究所,南京,210042;南京林业大学森林资源与环境学院,南京,210037
2. 环境保护部南京环境科学研究所,南京,210042
3. 安徽农业大学生命科学学院,合肥,230036
4. 江苏沿海地区农业科学研究所,江苏盐城,224002
5. 南京林业大学森林资源与环境学院,南京,210037
基金项目:转基因生物新品种培育科技重大专项之"转基因生物检测和监测新技术"重大课题(2008ZX08012-005),优秀博士学位论文创新基金项目“转基因抗虫棉对土壤生态系统及抗病性的影响”
摘    要:2007~2008年,在分别于1999年、2002年和2006年种植Cry1Ac基因抗虫棉的棉田中,于棉花的苗期、蕾期、花铃期和吐絮期采集土壤样品,采用改良的Tullgren法收集土壤中的中小型节肢动物,以监测长期种植转基因抗虫棉对土壤节肢动物群落的影响。2年8次采样共获得12类中小型节肢动物,隶属于节肢动物门中的7纲10目,其中弹尾目、蜱螨目、蜘蛛目为本地区棉田中的优势类群,综合纲、双翅目、半翅目、双尾目、鞘翅目和同翅目为常见类群。广义线性混合模型分析结果表明,随着转基因抗虫棉种植年限的增加,各转基因抗虫棉田中的土壤主要类群中小型节肢动物的个体密度和多样性指数没有产生显著性差异,但是随着采样时期的不同各棉田土壤主要中小型节肢动物的个体密度和群落多样性指数均呈显著性季节变化。主成分分析表明,弹尾目、蜘蛛目、蜱螨目的得分值较高,可作为本地区未来转基因抗虫棉环境影响监测的重要指标生物。

关 键 词:转基因抗虫棉  土壤  中小型节肢动物  多样性指数  环境风险监测
收稿时间:2009/11/9 0:00:00
修稿时间:2010/4/22 0:00:00

Effects of transgenic insect-resistant cotton plants different in planting age on soil meso- and microarthropods
Li Xiaogang,Liu Biao,Cao Wei,Xu Wenhua,Fang Zhixiang,Meng Jun,Zheng Yangping,Han Zhengmin.Effects of transgenic insect-resistant cotton plants different in planting age on soil meso- and microarthropods[J].Acta Pedologica Sinica,2011,48(3):587-593.
Authors:Li Xiaogang  Liu Biao  Cao Wei  Xu Wenhua  Fang Zhixiang  Meng Jun  Zheng Yangping  Han Zhengmin
Affiliation:Nanjing Institute of Environmental Sciences, Ministry of Environmental Protection of China
Abstract:In the consecutive 2-year field study (2007~2008), we took soil samples at four different cotton growth stages, namely, seedling, budding, boll forming and boll opening stages from cotton fields that had been planted with Cry1Ac cottons separately since 1999, 2002 and 2006, and collected soil meso- and microarthropodas in the samples with the modified Tullgren method, to monitor environmental impact of long-term cultivation of transgenic insect-resistant cotton in field conditions. A total of 12 taxonomic groups of soil meso- and microarthropods were obtained from soil samples collected in 8 times during the 2 years and could be further sorted into 7 classes, and 11 orders under arthropodas phyla. Collembola, Opisthopora and Acarina were the dominant groups and Symphyla, Isoptera, Hemiptera, Diplura, Coleoptera and Homoptera were the common groups in the soil. The Generalized Linear Mixed Model (GLMM) analysis of the 2-year data on soil arthropods shows that no significant difference was found between cotton fields different in cultivation age in individual number and the community diversity indices of the soil meso- and microarthropodas of the main soil arthropod groups, but significant seasonal variation was observed of the individual numbers and the diversity indices of the main soil meso- and microarthropodas. The Principal Component Analysis suggested that Collembola, Opisthopora and Acarina were relatively higher in value and can be cited as important indicator organisms to monitor environmental impacts of transgenic plants in the future in this region.
Keywords:Transgenic insect-resistant cotton  Soil  Meso- and microarthropods  Diversity index  Environmental risk monitoring
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