Liu Ren-tao, Li Xue-bin, Xin Ming, Ma Lin, Liu Kai
Ministry of Education Key Laboratory for Restoration and Reconstruction of Degraded Ecosystem in Northwestern China, Ningxia University, Yinchuan 750021, China.
Ying Yong Sheng Tai Xue Bao. 2011 Aug;22(8):2153-9.
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.
在宁夏盐池县国家资源监测站的支持下，对荒漠草原围封和未围封放牧草地的地面节肢动物、植被及土壤性质进行了调查。同时，根据地面节肢动物的食性对其功能类群进行了划分。荒漠草原的地面节肢动物可分为捕食性、植食性、腐食性和杂食性四个功能类群，其中捕食性和植食性类群数量占优，植食性和腐食性类群生物量占优，这意味着荒漠草原地面节肢动物主要以植食性节肢动物为特征。围封增加了捕食性、植食性和杂食性节肢动物的个体数和类群数以及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生物多样性，这与植被恢复和土壤环境改善密切相关，表明放牧草地围封增加了荒漠草原地面节肢动物功能类群的多样性和复杂性。然而，围封后腐食性节肢动物的个体数和生物量减少，反映出这些节肢动物对放牧草地的依赖性。
