Abstract:

The diversity was an important descriptor of community diversity and ecologists had proposed numerous indexes. The previous indexes that assumed all species were equal and came from the same tropic level were criticized. According to the definition of Shannon-Wiener, a new index was developed for measuring community diversity. The diversity index of biomass was sensitive to the population dynamics in arthropod pests and natural enemy' community. The diversity index gave a more faithful representation of the arthropod community characteristics in the jujube yard ecosystems.It was the better index for measuring community diversity because incorporating other difference among species as a component strengthened the functional aspect of species diversity measurement.

Key words: jujube yard ecosystems, arthropod community, biomass diversity