PPE 怪圈是指贫困(Poverty)、人口(Population)和环境(Environment)之间形成的一种互为因果的关系。更确切地说,是指“贫困—人口增长—环境退化”的恶性循环。如图所示: 而可持续发展指的是:既能满足当代人的需求,而又不损害后代人满足其需求的能力。它的内涵概括起来有三点:生态持续发展、经济持续发展和社会持续发展。因此,如何在经济发展、人口增长的情况下达到可持续发展,是大多数发展中国家面临的前所未有的挑战。中国是世界上人口最多的国家,也是世界上最大的发展中国家,同时也是世界上经济相对落后的国家。在世界经济的大潮中,中国面临着前所未有的大 The PPE circle refers to a mutual causal relationship between poverty, population, and environment. More precisely, it refers to the vicious circle of “poverty - population growth - environmental degradation”. As shown in the figure: Sustainable development refers to the ability to meet the needs of the contemporary people without compromising the ability of future generations to meet their needs. Its connotation is summed up in three points: sustainable development of the ecology, sustained economic development, and sustainable social development. Therefore, how to achieve sustainable development in the context of economic development and population growth is an unprecedented challenge faced by most developing countries. China is the most populous country in the world and the largest developing country in the world. It is also a relatively backward economy in the world. In the tide of the world economy, China is facing an unprecedented large