Abstract:

Artemisia ordosica is an important shrub widely distributed in northern China for combating desertification. Recently large areas of A. ordosica were damaged by several species of woodborers. However，few studies have focused on these woodborers of A. ordosica. To better understand the relationships between occurrence of these woodborers and environmental factors，a systematic survey was conducted at 3 different successional stages of A. ordosica in Yanchi，Ningxia Hui Autonomous region，China from May 2006 to September 2007. The results showed that the woodborers attacking A. ordosica included： Holcocerus artemisiae， Adosopius sp.，Sphenoptera sp. and a species of Tortricidae. All these 4 woodborer species attacked A. ordosica at 3 different successional stages of A. ordosica，and the dominant species were alternative at each successional stage. Linear stepwise regression analysis was used to establish relations between environment factors and population dynamics of these woodborer species.

Key words: Artemisia ordosica, succession, woodborer, abundance