由世界上28位顶尖科学家共同参与的一项研究表明,气候变化、海洋酸化、氮污染、磷污染、土地使用、可用淡水、生物多样性、大气悬浮颗粒浓度和化学污染会给地球环境造成重要影响。这9大因素都有自己的底线,如果人类逾越其中任何一条,都会给地球环境带来灾难性的改变。科学家研究发现,地球的生态环境变化已经非常快,每次气候转变可能只需1个世纪,甚至 A study of 28 leading scientists in the world shows that climate change, ocean acidification, nitrogen pollution, phosphorus pollution, land use, available fresh water, biodiversity, atmospheric suspended particle concentrations and chemical pollution can contribute to the global environment influences. All nine major factors have their own bottom line. If any one of them crosses any one of them, it will bring disastrous changes to the earth’s environment. Scientists have found that the ecological environment of the Earth has changed very rapidly and that every climate change may take only a century or even