The genetic diversity of Potamogeton maackianus A.

Operation of acidogenesis and homoacetogenesis coupling system and its microbial community analysis;

The effects of environmental factors on the fluctuations of Sinopotamon chekiangense Tai et Song's population;

Spatial and temporal distribution of water hyacinth population in Shanghai and its control methods.;

Effects of methamidophos and acetochlor on population and activity of methanogens.;

Mosquito species and their seasonal growth and decay at Zhenjiang port;

Survey on Fly Species and Density in Xiaogan Urban Area;

An Investigation on Fly Density and Species in Nanchang Frontier Area;

Study on Distribution Pattern of Amanita Populations;

Quantitative Characters of Vegetative Multiplication of Bothriochloa ischaemum Populations;

Analysis on the Genetic Divergence of Five Populations of Locusta migratoria by using RAPD;

Approximate solution to a coupling model,of ecological system for the habitat and annihilation of species groups;

but for a long time,with poor breeding technique and management,quality of thespecies group of the Animal is declined and it s quantity reduced rapidly.

In this paper,a class of species group ecotogical environmental problem is con- sidered.