Diversityindexof phytoplankton in flood period is higher than that in dry period.
丰水期浮游植物多样性指数大于平水期。
2
With the rapid expansion of information and information diversity, traditional search engines need to collect, index, query the contents of the constantly expanding.
随着信息急剧膨胀以及信息的多元化，使得传统搜索引擎需要采集、索引、查询的内容不断扩大。
3
Analysis based on Hurlbert diversityindex shows that the community stability of inside level is less than the outside one.