biocoenosis

The biotope acts on the biocoenosis .

群落生境对生物群落有作用。

Perennial aquatic grass of North America bearing grain used for food . The biotope acts on the biocoenosis .

北美多年生水生草，谷粒用作食物。群落生境对生物群落有作用。

The extensive investigations were made into the reason of its excessive propagation in the eutrophication of water body by analyzing the relationship between its physiological characteristic and environmental factors , and food chain in biocoenosis .

首先对其生理特性与环境因子之间的关系进行了论述，然后从生态学角度出发，利用生态群落中的食物链关系，分析了富营养化水体中摇蚊幼虫大量孳生的原因。

The biotope acts on the biocoenosis . species-rich biomes

物种丰富的生物群落

The constituent characters of the POPs , the toxicology effects for the biocoenosis , the pollution sources , the environmental analysis , the environmental behaviors , food chain transition and the regional and the global pollution transition are expounded in the paper .

本文综述了持久性有机污染物的成分特性、对生物群的毒理效应、环境污染源、环境分析、环境行为、食物链传播、地区性或全球性的污染传输等问题。