地理研究 ›› 2015, Vol. 34 ›› Issue (5): 872-882.doi: 10.11821/dlyj201505007

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甲氨基阿维菌素苯甲酸盐对黑土区农田土壤动物群落的影响

沙迪1,2, 翟清明1,3, 张雪萍1,3, 高梅香1,3()   

  1. 1. 哈尔滨师范大学地理科学学院, 哈尔滨 150025
    2. 哈尔滨学院, 哈尔滨 150086
    3. 黑龙江省普通高等学校地理环境遥感监测重点实验室, 哈尔滨 150025
  • 收稿日期:2014-11-02 修回日期:2015-03-23 出版日期:2015-06-12 发布日期:2015-06-13
  • 作者简介:

    作者简介:沙迪(1978- ),男,黑龙江哈尔滨人,博士研究生,主要从事环境生态学研究。E-mail:83454104@qq.com

  • 基金资助:
    国家自然科学基金项目(41371072, 41471037, 41101049);哈尔滨师范大学青年学术骨干资助计划项目(KGB201204)

Effects of emamectin benzoate on soil animal community in a black soil farmland

Di SHA1,2, Qingming ZHAI1,3, Xueping ZHANG1,3, Meixiang GAO1,3()   

  1. 1. College of Geographical Science, Harbin Normal University, Harbin 150025, China
    2. Harbin University, Harbin 150086, China
    3. Key Laboratory of Remote Sensing Monitoring of Geographic Environment of Heilongjiang province, Harbin 150025, China
  • Received:2014-11-02 Revised:2015-03-23 Online:2015-06-12 Published:2015-06-13

摘要:

甲维盐属高效半合成抗生素杀虫剂。在哈尔滨市典型黑土农田区,研究不同浓度甲维盐处理对土壤动物群落结构的影响。结果表明:甲维盐处理显著降低了土壤动物群落的个体密度和类群数量,且这种趋势随着甲维盐浓度的增加而增强;显著改变了群落的垂直分布格局,表聚性特征被削弱,使动物较多地聚集于5~15 cm土层;改变了群落多样性特征,其中螨类和跳虫对多样性的贡献相对较大;显著改变了表层土壤化学性质,但不同动物类群对土壤环境变化的响应规律不同,螨类和跳虫对甲维盐干扰具有较强的适应能力。甲维盐处理可以显著改变黑土区农田土壤动物群落结构,浓度是影响该过程的重要因素,施用杀虫剂时需慎重评价其生态后果。

关键词: 甲维盐, 黑钙土, 农田生态系统, 土壤动物, 群落组成, 生物多样性

Abstract:

Emamectin benzoate is one of the most efficiently semi-synthetic antibiotic pesticides. However, little is known about the responses of composition, structure and biodiversity of soil animal community to the application of emamectin benzoate. In order to reveal the effects of emamectin benzoate on soil animal community, a field experiment was carried out in a typical black soil farmland area of Hulan district, Harbin city, Northeast China. Based on fixing-plot investigation in 2012, the plots were treated by different concentrations of emamectin benzoate, and then the soil samples were collected from different stratification (i.e. 0-5 cm, 5-10 cm, 10-15 cm and 15-20 cm) in May, July and September. In total, 5772 individuals belonging to 4 classes, 11 orders were captured, and all of them were divided into 31 groups. The results showed that under emamectin benzoate treatment (1) individual densities and group numbers of soil animal decreased significantly, and the decreasing trends of individual densities and group numbers were more obviously with increasing concentrations of emamectin benzoate; (2) the vertical distribution structures of soil animal communities were changed obviously, and most individuals and groups of soil animals preferred to gather in the 5-15 cm soil layer rather than in the 0-5 cm soil layer; (3) the diversities of soil animal communities were changed, but the contributions of different groups to community diversity were different, in which contributions of soil mites and springtails were relatively large than those of other groups; (4) the soil chemical properties of topsoil were changed significantly. However, responses of soil animal groups to soil environmental change were groups-specific, in which soil mites and springtails exhibited a stronger adaptive ability than those of the others. In a word, emamectin benzoate treatment can significantly change the community structure, vertical pattern and diversity of soil animal community in a typical black soil farmland area. It is emphasized that the concentration of emamectin benzoate might be an important indicator when we assess the influence of emamectin benzoate on soil animal community. It is suggested that we should prudently assess the ecological consequences when using the emamectin benzoate in farmland ecosystems.

Key words: emamectin benzoate, chernozem, farmland ecosystem, soil animal, community structure, biodiversity