文章摘要
黄顶菊(Flaveria bidentis)凋落物对土壤无脊椎动物群落的影响
Impact of Flaveria bidentis Litter on Communities of Invertebrates in Soil in Different Habitats
投稿时间:2015-10-14  
DOI:10.13254/j.jare.2015.0245
中文关键词: 黄顶菊  凋落物  土壤无脊椎动物  生物多样性
英文关键词: Flaveria bidentis  litter  soil invertebrates  biodiversity
基金项目:公益性行业(农业)科研专项(201103027)
作者单位E-mail
晏静 中国农业科学院农业环境与可持续发展研究所, 北京 100081
山东农业大学植物保护学院, 山东 泰安 271018 
 
张瑞海 中国农业科学院农业环境与可持续发展研究所, 北京 100081  
宋振 中国农业科学院农业环境与可持续发展研究所, 北京 100081  
张国良 中国农业科学院农业环境与可持续发展研究所, 北京 100081  
刘玉升 山东农业大学植物保护学院, 山东 泰安 271018  
付卫东 中国农业科学院农业环境与可持续发展研究所, 北京 100081 fuweidong@caas.cn 
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中文摘要:
      以黄顶菊(Flaveria bidentis)入侵的林地、荒地和沟渠作为调查样地,探讨黄顶菊凋落物对土壤无脊椎动物群落的影响。利用环刀进行取样,3种生境共捕获土壤无脊椎动物54315头,隶属2门10纲17目。3种生境的优势类群皆为蜱螨目和弹尾目,其余类群的相对多度较小。黄顶菊凋落物能够为土壤无脊椎动物提供栖息地与食物来源,进而影响其群落结构及多样性,该影响与黄顶菊自身群体的生长状况有关,在长势较弱的林地生境影响较小,而在长势较强的荒地和沟渠生境影响较大。综上所述,黄顶菊入侵3种生境后,植株及其凋落物能为优势类群提供更好的栖息地和隐蔽所,并通过改变表层腐殖土的主要养分含量,引起土壤无脊椎动物多样性的升高,且土壤无脊椎动物在凋落物层中多样性呈自上而下的升高趋势。
英文摘要:
      An investigation was conducted to explore the impacts of Flaveria bidentis litter on the communities of invertebrates in soil in three different habitats including forestland, wasteland, and ditches. A total of 54315 individuals were captured in three habitats on October 23rd by cutting ring(diameter is 20 cm, height is 10 cm), which is divided into three sampling layers in this study. All of the individuals belong to 2 phyla 10 classes 17 orders, among which Arachnoidea and Collembola were the dominant orders in three habitats, and the relative abundance of other species were smaller. F. bidentis litter could provide the better habitats and food sources for invertebrates in soil, such as Arachnoidea, Collembola, Psocoptera and so on, thereby affecting their structure and diversity of community of invertebrates in soil which mainly related to growth conditions of F. bidentis community, which is characterized by its weaker growth conditions in forestland but stronger growth in wasteland land and ditches. In summary, F. bidentis plants and their litter provided habitat and concealment for the dominant species, and significantly changed content of nitrogen, phosphorus, potassium and organic matter in surface humus soil after the invasion of F. bidentis in three habitats, which cause the increasing of diversity of invertebrates in soil and also it trends to increase for the diversity of invertebrates in liter from top to bottom. Thus it laid a foundation for the influence of decomposition rate in F. bidentis litter on the diversity of invertebrate communities in soil.
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