摘要
以宁夏盐池国家级草原资源生态监测站为依托,选择荒漠草原典型植被类型的封育与未封育样地调查了地面节肢动物、植被及土壤特征,同时根据动物食性对节肢动物功能群进行了划分.结果表明:荒漠草原地面节肢动物可划分为捕食性、植食性、腐食性和杂食性4种营养功能群.其中,植食性和捕食性节肢动物在数量上占优势,植食性和腐食性节肢动物生物量所占比例较大,表明荒漠草原地面节肢动物区系以植食性动物分布为其主要特征.围栏封育增加了捕食性、植食性和杂食性节肢动物个体数量和类群数,增加了捕食性和杂食性节肢动物的生物量,提高了捕食性和植食性节肢动物的物种多样性,这与植被恢复和土壤环境改善密切相关,说明荒漠草原围栏封育增加了地面节肢动物功能群的多样性和复杂性.但是围栏封育后,腐食性节肢动物个体数量减少,生物量降低,反映了腐食性节肢动物对放牧草地生境的依赖性.
With the support of the National Resources Monitoring Station in Yanchi County of Ningxia,an investigation was conducted on the ground arthropods,vegetations,and soil properties in the enclosed and un-enclosed grazing grassland in desert steppe.In the meantime,the functional groups of ground arthropods were classified according to their feeding habits.The ground arthropods in the desert steppe could be classified into four functional groups,i.e.,predatory,phytophagous,saprophagous,and omnivorous,among which,predatory and phytophagous groups were dominant in quantity,and phytophagous and saprophagous groups were predominant in biomass,implying that the ground arthropod in desert steppe was mainly characterized by phytophagous arthropods.Enclosure increased the individual and group number of predatory,phytophagous,and omnivorous arthropods as well as the biomass of predatory and omnivorous arthropods,and enhanced the biodiversity of predatory and phytophagous arthropods,which was closely correlated with the vegetation recovery and soil environment improvement,and demonstrated that the enclosure of grazing grassland increased the diversity and complexity of ground arthropod functional groups in desert steppe.Nevertheless,the individual number and biomass of saprophagous arthropods decreased after the enclosure,reflecting the dependence of these arthropods on grazing grassland.
出处
《应用生态学报》
CAS
CSCD
北大核心
2011年第8期2153-2159,共7页
Chinese Journal of Applied Ecology
基金
国家重点基础研究发展计划项目(2009CB421303)资助
关键词
荒漠草原
地面节肢动物
功能群
封育
放牧
desert steppe
ground arthropod
functional group
enclosure
grazing.
