摘要
本文介绍全球热带亚热带地区低洼渍水地的分布状况,认为这些低洼渍水地开发利用,对发展农业、解决当地粮食,提高经济效益、改善生态环境具有重要意义。
At present, most of the undeveloped natural resources in the world are mainly distributed in tropical and subtropical zones, one of which is low-lying land resources. The total amount of tropical and subtropical low-lying land is estimated about 2 million km^2 and about 60% of that are distributed in three regions: the three islands of Indonesia in Southeast Asia (500 000 km^2), Sudan, Zaire and Chad Lake Area in Africa (500 000 km^2) and Colombia in South America (200 000 km^2). Crops can grow all the year round with high temperature in tropical and subtropical zones, and the low-lying land there can be developed and produce a large quantity of foods to feed a great number of people. Meanwhile, the changes from waste low-lying land into fertile farmland will help to improve the ecological environment. Development conditions of the low-lying land in Central and South America and in Vietnam, Thailand, Burma, India and South China are the best, and those in Sudan and Mozambique in Africa are also good.
出处
《热带地理》
北大核心
1993年第2期99-105,共7页
Tropical Geography
关键词
热带
亚热带
低洼渍水地
开发
Low-lying land
Tropical and subtropical zones
Development
