<正>The southeastern Alxa Block(i.e.,the Hexi Corridor)is a tectonic junction between the North China Block(NCB)to the east,the Alxa Block to the north,and the
<正>1 Introduction Earthworms are an important component of soil macrofauna,dominating the biomass of soil invertebrates(Kodama et al.,2014;Plum and Filser,2005