由此产生的聚落地图显示，公元500年至公元850年，科潘古城崩溃时，城市周围农村人口的分布和密度发生了巨大变化。
The resulting settlement maps show how the distribution and density of the rural population around the city changed dramatically between AD 500 and 850, when copán collapsed.
人口不断增加所带来的压力促使人们大量砍伐木本植物，因此许多城市和城镇周围的大片地区已经完全没有树木和灌木了。
The increased pressures of expanding populations have led to the removal of woody plants, so that many cities and towns are surrounded by large areas completely lacking in trees and shrubs.
加拉加斯的人口超过400万，其中有200万人住在城市周围山坡上的贫民窟中。
More than 4 million people live in caracas-2 million of them in barrios on the slopes that surround the city.
应用推荐