| 放牧干扰后自然恢复沙质草地大型土壤动物功能群变化特征 |
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| 引用本文： | 刘任涛,赵哈林,赵学勇.放牧干扰后自然恢复沙质草地大型土壤动物功能群变化特征[J].生态环境,2011,20(12):1794-1798. |
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| 作者姓名： | 刘任涛 赵哈林 赵学勇 |
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| 作者单位： | 1. 宁夏大学西北退化生态系统恢复与重建教育部重点实验室,宁夏银川,750021
2. 中国科学院寒区旱区环境与工程研究所,甘肃兰州,730000 |
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| 基金项目： | 宁夏高等学校科学研究项目(NJY2011021); 国家自然科学基金项目(41101050); 国家重点基础研究发展计划项目(2009CB421303); 国家科技支撑项目(2010BAC07B03) |
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| 摘 要： | 通过调查科尔沁沙质退化草地不同强度放牧干扰（重度放牧，HGR；适度放牧，MGR）后自然恢复草地中大型土壤动物群落特征，分析了放牧干扰对大型土壤动物功能群的长期影响。结果共获得大型土壤动物1门2纲8目32个类群，优势类群为象甲科（鞘翅目）和蚁科（膜翅目）2类，共占捕获量的41．54％。大型土壤动物功能群包括植食性、肉食性和杂食性3类，分别具有16、15和1个类群，其个体数分别占总捕获数的64．08％、32．39％和3．52％。HGR有23个动物类群，分属于3个功能群；MGR有19个类群，但只有2个功能群（无杂食性）。HGR大型土壤动物个体数、类群数和多样性指数均略高于MGR，但HGR和MGR间无显著差异性（P〉0．05）。植食性和肉食性土壤动物个体数占总个体数比例HGR均略低于MGR，但植食性动物和肉食性动物个体数间的比例较稳定。与中度放牧干扰产生的影响相比，重度放牧干扰对大型土壤动物群落（包括功能群特征）产生的长期影响更为明显。重度放牧后沙质草地自然恢复过程中大型土壤动物群落的营养结构变得更为复杂，但12年恢复时间对大型土壤动物群落结构恢复的影响有限。
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| 关 键 词： | 放牧干扰 恢复草地 大型土壤动物 功能群 群落结构 |
Changes in functional groups of soil macro-faunal community in degraded sandy grassland under post-grazing natural restoration in Hoqin Sand Land |
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| LIU Rentao,ZHAO Halin .Key Laboratory for Restoration , Reconstruction of Degraded Ecosystem in Northwestern China,Ministry of Education,Ningxia University,Yinchuan ,China,.Cold , Arid Regions Environmental , Engineering Research Institute,Chinese Academy of Sciences,Lanzhou.Changes in functional groups of soil macro-faunal community in degraded sandy grassland under post-grazing natural restoration in Hoqin Sand Land[J].Ecology and Environmnet,2011,20(12):1794-1798. |
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| Authors: | LIU Rentao ZHAO Halin Key Laboratory for Restoration Reconstruction of Degraded Ecosystem in Northwestern China Ministry of Education Ningxia University Yinchuan China Cold Arid Regions Environmental Engineering Research Institute Chinese Academy of Sciences Lanzhou |
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| Institution: | LIU Rentao1,ZHAO Halin2 1.Key Laboratory for Restoration and Reconstruction of Degraded Ecosystem in Northwestern China,Ministry of Education,Ningxia University,Yinchuan 750021,China,2.Cold and Arid Regions Environmental and Engineering Research Institute,Chinese Academy of Sciences,Lanzhou 730000 |
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| Abstract: | With the support of Naiman desertification research station,CAS,the community characteristics of soil macro-fauna were investigated in degraded sandy grassland under post-heavy(HGR) and-moderate grazing(MGR) natural restoration in Horqin Sand Land.The diversity and functional groups of soil faunal community were also discussed in this paper.The specimens obtained belonged to 2 classes,8 orders and 32 families(group).The dominant groups were Curculionidae and Formicidae,which totally accounted for 41.54% in ... |
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| Keywords: | Grazing disturbance restoration grassland soil macro-fauna functional group community structure |
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