Comparative studies on the arthropod communities between simple and complex litchi orchards were conducted in the suburb of Guangzhou.The Shannon Weiner index H' and the probability of interspecies encounter( PIE ) were used to describe and analyze the structure of arthropod communities.In the simple litchi orchard,phytophagous insects occupied 66.7% of the total arthropod community,predatory insects,parasitoids and spiders added up to 2.5% Whereas in the complex litchi orchard,phytophagous insects a...