From Nov.2008 to Mar.2009

a systematical investigation on overwintering arthropod community was carried out in rice habitat and nonrice habitat in Qingxin

Guangdong Province. The results are as follows: 33 species of arthropods were collected

including 4 species of predators

3 species of parasitoids

16 species of insect pests

3 species of neutral insects and 7 species of spiders. Spider is the dominant arthropod species in the ricericewinter follow field (WF) and weed habitat (WH)

while Hemiptera dominates in ricericefield ridge (FR) and Diptera dominates in Lolium multiflorum L.(LL) ShannonWiener diversity indexes (H) and PielouEvenness (J) are highest in FR and lowest in LL. Simpson dominance index (C) is the highest in LL and the lowest in FR. Jaccard similarity index is the highest between WH and LL

while WF and FR treatments is the lowest.