The present paper deals with the species composition, fauna characteristics, density and biomass distribution and dominant species of maine benthos in 8 main bays of Fujian.

Species composition,density and biomass distribution and their relationship to polychaete and their inhabiting environments were studied.

This paper analyzes the relationship of the distribution of species, biomass and density of Polychaeta with the environmental factors, including salinity, water temperature and sediment type.

The results showed that the mean abundance was 194.

The results showed that the mean abundance in autumn (2000) was 87 ind.

Habitat Harmony And the Interpretation of Survival——Anthropology Investigation about Qiandongnan Dongs in Guizhou Province ;

The biological characteristics of the Leptobatia elongata (Bleeker) in terms of its morphology, age and growth, reproduction, and habitat was reported.

The relation of the average quotation quantity and information density is discussed.

Strengthening information sense,increasing selection dynamics,shortening publication circle,enlarging information density are yielding characteristic publication and raising it′s level.

This paper describes a habitat suitability model for Chinese sturgeon in the Yichang reach which integrates the 2-D k-ε turbulence model with habitat suitability functions for Chinese sturgeon.