2030年人类将需要两个地球

    Human demands on natural resources have doubled in under 50 years and are now outstripping（超过） what the Earth can provide by more than half, a new report has warned.
    And humanity carries on（继续） as it is in use of resources, globally it will need the capacity of two Earths by 2030, the biennial¹ Living Planet Report said.
    Wildlife in tropical countries is also under huge pressure, with populations of species falling by 60 per cent in three decades.
    And the report, from the WWF, the Zoological Society of London and the Global Footprint Network, said British people are still consuming far more than the Earth can cope with.
    If everyone lived such a lifestyle, humans would need 2.75 planets to survive（生存）, it warned.
    The world's people are now living lifestyles which would require one and a half planets to sustain, though there are significant differences between rich and poor nations.
    The UK comes 31st in a list of countries based on their 'ecological² footprint'（生态足迹） - the amount of land and sea each person needs to provide the food, clothes and other products they consume and to absorb the carbon dioxide they emit.
    The country has fallen down the league table from having the 15th biggest footprint in the last report two years ago, but WWF attributes this to an increase in other countries' impact rather than a reduction in the UK's use of resources.
    Ireland has the 10th highest ecological footprint in the world, while the United Arab Emirates, Qatar, Denmark, Belgium and the US are the five worst countries for over-consumption of resources.
    Much of the 'ecological overshoot' is caused by the world's rising carbon footprint, which has increased 11-fold since 1961.
    It also carried a warning about the loss of wildlife and ecosystems³ which people depend on for food, fuel, clean water and other resources - with populations of species declining by 30 per cent worldwide between 1970 and 2007.(本文由在线英语听力室整理编辑)

1 biennial   

adj.两年一次的

参考例句：

• The workers were strongly against the biennial election.工人们强烈反对两年一次的选举。
• His is a biennial,and one of the most useful pasture plants we have.这是两年生植物，也是我们最有用的牧草之一。

2 ecological   

adj.生态的，生态学的

参考例句：

• The region has been declared an ecological disaster zone.这个地区已经宣布为生态灾难区。
• Each animal has its ecological niche.每种动物都有自己的生态位.

3 ecosystems   

n.生态系统( ecosystem的名词复数 )

参考例句：

• There are highly sensitive and delicately balanced ecosystems in the forest. 森林里有高度敏感、灵敏平衡的各种生态系统。 来自《简明英汉词典》
• Madagascar's ecosystems range from rainforest to semi-desert. 马达加斯加生态系统类型多样，从雨林到半荒漠等不一而足。 来自辞典例句