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Acta Ecologica Sinica 33 (2013) 12–22 Contents lists available at ScienceDirect Acta Ecologica Sinica journal homepage: /locate/chnaes Seasonal dynamics of soil fauna in the subalpine and alpine forests of west Sichuan at different altitudes Bo Tan a, Fuzhong Wu a, Wanqin Yang a,⇑, Sheng Yu b, Li Liu c, Ao Wang a, Yulian Yang a a Key Laboratory of Ecological Forestry Engineering, Institute of Ecological Forestry, Sichuan Agricultural University, Chengdu 611130, Sichuan, China b Kaixian Forestry Bureau, Kaixian 405400, Chongqing, China c Dujiangyan Environmental Monitoring Station, Dujiangyan 611830, Sichuan, China a r t i c l e i n f o a b s t r a c t Article history: The climate (especially temperature) often plays an important role in the structure, function as well as Received 26 May 2011 composition of soil organisms in different latitudes and altitudes. As one of the essential components Revised 6 August 2011 of soil ecosystem, soil faunal community not only lays their roles as soil engineer in material cycling Accepted 20 March 2012 and energy flow, but also acts as the sensitive bio-indicator to environmental change. However, little information has been available on the responses of soil faunal community to the changed environment at different altitudes and seasons. In order to understand the seasonal dynamics of soil faunal diversity