世界范围的绿化破坏

我遇到的每一个人都声称他们喜欢树,我是说真的喜欢,然而从总体上讲人类的行为却似乎让人感觉它憎恶绿色。如果你从你现在所处的任一生物群落区抽身,从历史记载上来看整个地球和它的森林,你会发现人类和树木的关系看上去奇怪地像一场战争(这是德里克·简森和乔治·德拉芬最近出版的一本关于森林的书名)。

确切的破坏程度很难搞清楚,因为有许多年的记载没有被保存下来,但是据估计,世界上大约75%的原始森林遭到了人类的砍伐或焚烧。当然其中的一些又重新长了出来,或者被重新种上了树,但是普遍认为我们现在拥有的林地数目只有当初的一半左右。

在某些地方,尤其是地球上比较干燥的地区,森林被如此严重地砍伐,随之又受到如此严重的牧群啃食,以致没能再重新生长出来。地貌受到了永久性的改变。

To continue reading, please log in or enter your email address.

Registration is quick and easy and requires only your email address. If you already have an account with us, please log in. Or subscribe now for unlimited access.

required

Log in

http://prosyn.org/ktYupxW/zh;
  1. An employee works at a chemical fiber weaving company VCG/Getty Images

    China in the Lead?

    For four decades, China has achieved unprecedented economic growth under a centralized, authoritarian political system, far outpacing growth in the Western liberal democracies. So, is Chinese President Xi Jinping right to double down on authoritarianism, and is the “China model” truly a viable rival to Western-style democratic capitalism?

  2. The assembly line at Ford Bill Pugliano/Getty Images

    Whither the Multilateral Trading System?

    The global economy today is dominated by three major players – China, the EU, and the US – with roughly equal trading volumes and limited incentive to fight for the rules-based global trading system. With cooperation unlikely, the world should prepare itself for the erosion of the World Trade Organization.

  3. Donald Trump Saul Loeb/Getty Images

    The Globalization of Our Discontent

    Globalization, which was supposed to benefit developed and developing countries alike, is now reviled almost everywhere, as the political backlash in Europe and the US has shown. The challenge is to minimize the risk that the backlash will intensify, and that starts by understanding – and avoiding – past mistakes.

  4. A general view of the Corn Market in the City of Manchester Christopher Furlong/Getty Images

    A Better British Story

    Despite all of the doom and gloom over the United Kingdom's impending withdrawal from the European Union, key manufacturing indicators are at their highest levels in four years, and the mood for investment may be improving. While parts of the UK are certainly weakening economically, others may finally be overcoming longstanding challenges.

  5. UK supermarket Waring Abbott/Getty Images

    The UK’s Multilateral Trade Future

    With Brexit looming, the UK has no choice but to redesign its future trading relationships. As a major producer of sophisticated components, its long-term trade strategy should focus on gaining deep and unfettered access to integrated cross-border supply chains – and that means adopting a multilateral approach.

  6. The Year Ahead 2018

    The world’s leading thinkers and policymakers examine what’s come apart in the past year, and anticipate what will define the year ahead.

    Order now