摘要
地球出现生命以来,生物物种数量动态增长,但随着人类活动的出现,生物物种灭绝速度逐渐加快。导致物种灭绝的直接原因,如生境丧失、物种联系被切断、环境污染、人为选择、滥采滥杀、全球升温、生物入侵等,正是人类的活动范围和力度的不断加大。作为优势物种的人类,在急速大规模地改变环境,使其他物种面临人的选择压力的同时,其自身也面临着适应性进化能力的严峻挑战。物种大灭绝和不可恢复性是人类面临的最大环境威胁。
Since life appeared on earth, biological species grew dynamically. However, the speed of species extinction is gradually accelerating as human being came to dominance. The direct reason of species extinction is the growing scope and intensity of human activities, such as devastating the habitat, breaking the species chain, polluting the environmental, choosing species by human interest, hunting and deforesting uncontrollably, accelerating the greenhouse effect, invading biologically, and so on. As the advantaged species, human has changed the environment so rapidly and in a large-scale that human has not only put pressure on other species by human choice, but it is also confronting the serious challenge of its own ability to adapting the evolution. The mass extinction is the greatest environmental threat that human is facing.
出处
《北京行政学院学报》
CSSCI
北大核心
2007年第6期99-103,共5页
Journal of Beijing administration institute
关键词
物种灭绝
人为原因
适应性进化
species extinction
man-made reasons
adaptive evolution
