Liu Ren-tao, Zhao Ha-lin, Zhao Xue-yong
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. 2010 Nov;21(11):2849-55.
Taking the Naiman Desertification Research Station under Chinese Academy of Sciences as a base, an investigation was conducted on the community structure of soil arthropods in the naturally restored sandy grasslands after different intensity grazing disturbance, with the effects of vegetation and soil on this community structure approached. In the non-grazing grassland, soil arthropods were rich in species and more in individuals, and had the highest diversity. In the restored grassland after light grazing, soil arthropods had the lowest evenness and diversity. In the restored grassland after moderate grazing, the individuals of soil arthropods were lesser but the major groups were more, and the evenness and diversity were higher. In the restored grassland after heavy grazing, the individuals of soil arthropods were more but the major groups were lesser, and the diversity was higher. Plant individuals' number, vegetation height and coverage, and soil alkalinity were the main factors affecting the soil arthropod community in naturally restored grasslands after different intensity grazing disturbance. It was implied that after 12-year exclosure of grassland, soil arthropod community could be recovered to some degree, while grazing disturbance had long-term negative effects on the arthropod community.
以中国科学院奈曼沙漠化研究站为基地，对不同强度放牧干扰后自然恢复的沙地草原土壤节肢动物群落结构进行了调查，并探讨了植被和土壤对该群落结构的影响。在未放牧的草原中，土壤节肢动物种类丰富、个体数量较多，多样性最高。在轻度放牧后的恢复草原中，土壤节肢动物的均匀度和多样性最低。在中度放牧后的恢复草原中，土壤节肢动物个体数量较少但主要类群较多，均匀度和多样性较高。在重度放牧后的恢复草原中，土壤节肢动物个体数量较多但主要类群较少，多样性较高。植物个体数量、植被高度和盖度以及土壤碱度是影响不同强度放牧干扰后自然恢复草原土壤节肢动物群落的主要因素。这表明草原封禁12年后，土壤节肢动物群落可得到一定程度的恢复，而放牧干扰对节肢动物群落具有长期负面影响。
