植物对环境污染的适应代价  

Cost of Plants' Adaptation to Environmental Pollution

作　　者：郭涛[1] 段昌群[1] 王海娟[1] 

机构地区：[1]云南大学环境科学系,云南昆明650091

出　　处：《环境科学导刊》2001年第z1期17-20,137,共5页Environmental Science Survey

摘　　要：生物长期暴露在低浓度污染环境中会作自我调整来适应环境。适应继续 ,其代价即可检测到。一般来讲 ,适应代价由进化代价和生态代价组成。进化代价主要集中在污染程度上 ,也就是说 ,适应于目前环境的植物群落会失去适应其他环境的能力 ,进化敏捷性减弱。尽管有一些学者并不赞成 ,但有大量科学数据支持这一观点。生态代价指的是生物适应寒冷、炎热、干燥和其他压力的能力降低 ,这些都是基于trade -offs理论产生的。The living organism exposed to long time and low concentration pollution may adjust itself to adapt the environment.As thd adaptation go on,the adaptation cost may be detected.In general the adaptation cost was composed of evolution cost and ecology cost.The evolution cost mainly focus on the population level,which means the population adapted to the current pollution environment may lost the potential to adapt other environment and the evolution agility decreased.There are a vast amount of scientific data support this view though some scholars don't accept this.As the ecology cost,it refers to the ability of living organism to adaptation to cold,heat,drought,and others stress decreased and all these result from the trades-off theory.

关 键 词：适应代价 生态代价 进化代价 trade-offs理论 

分 类 号：X503.23[环境科学与工程—环境工程]