生态学杂志2012，Vol.31Issue(7)：1756-1762,7.
大沙鼠在柽柳沙包“肥岛”形成过程中的作用
Role of Rhombomys opimus in the development of "fertile island" in tamarisk mounds in Junggar Basin
摘要
Abstract
Shrub "fertile island" is created and maintained by a combination of physically and biologically mediated processes. Plants are the key factor affecting the formation of " fertile island" , while the activities of burrowing animals can affect the soil physical and chemical properties, which promotes the development of the "fertile island". In this paper, tamarisk ( Tamarix spp. ) , a dominant shrub species growing in oasis-desert ecotone, and great gerbil (Rhombomys opimus) , a widely distributed rodent in Central Asia, were taken as study objects to investigate the "fertile island" effect of R. opimus in tamarisk mounds in Junggar Basin. In the tamarisk mounds without the settlement of R, opimus, "fertile island" effect existed, but the soil nutrients contents had no significant increase. After the settlement of R. opimus, the tamarisk mounds showed obvious "fertile island" effect, with significantly higher soil nutrients contents than the inter-mound areas. The burrowing activities of R. opimus promoted the enrichment of nutrients in 15-50 cm soil layer, and the content of soil available nitrogen in the tamarisk mounds with R. opimus burrows was over 2 times higher than that in the mounds without R. opimus burrows at the same depths. Our study indicated that the burrowing activities of R. opimus promoted the development of "fertile island" in the tamarisk mounds.关键词
大沙鼠/“肥岛”/生物扰动/柽柳沙包Key words
Rhombomys opimus/ "fertile island" / bio-disturbance/ tamarisk mound.分类
生物科学引用本文复制引用
徐文轩,刘伟,杨维康,汤超文,DavidBLANK..大沙鼠在柽柳沙包“肥岛”形成过程中的作用[J].生态学杂志,2012,31(7):1756-1762,7.基金项目
国家自然科学基金项目(30970476)、科技部国际合作项目(2010DFA92720)、中国科学院特聘研究员计划(200922-5)和中国科学院西部之光联合学者项目(LHXZ200701)资助. （30970476）
