科学家认为:人类活动已经越过了九条“地球生态边界”中的四条

• 作 者: Joel Achenbach 胡溦
• 出 处: 英语文摘
• 发表日期: 2015年05期
• 关键词: 地球生态 planetary breaking gauge extinction things crossed conclusion cease 人类活动

(1)At the rate things are going,the Earth in the coming decades could cease~2 to be a“safe operating space”for human beings.That is the conclusion of a new paper published Thursday in the journal Science by 18 researchers trying to gauge~3 the*breaking points~4 in the natural world.(2)The paper contends~5 that we have already crossed four“planetary boundaries.”They include the extinction rate;deforestation~6;the level of carbon dioxide in the atmosphere;

(1) At the rate things are going, the Earth in the coming may could cease ~ 2 to be a “safe operating space” for human beings. What is the conclusion of a new paper published Thursday in the journal Science by 18 researchers who want to gauge ~ 3 the * breaking points ~ 4 in the natural world. (2) The paper contends ~ 5 that we have already crossed four “planetary include.” They include the extinction rate; deforestation ~ 6; the level of carbon dioxide in the atmosphere;