Field surveys were carried out in two locations in the western suburb of Fuzhou, from September 1995 to March 1997. Shannon Wiener's average information content ( H ), Hurlbert's probability of interspecific encounter ( PIE ) and Pielou's formula of equitability ( E ) were employed to measure the diversity and equitability of insect communities in cruciferous fields. The result showed that, in the cruciferous fields of Fuzhou suburb, dominant insect species represented 13.51% of the herbivores, subor...
【基金】
福建省科委资助项目! (97- Z- 2 2 0 )
【分类号】
S436.3
【正文快照】
The species composition,richness and diversity of bio- communities have been one of thecentral themes in ecological studies since the conceptof diversity index was advanced by Fisher etal[1 ] . Early workers used the number of species per sample or liter
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