关键词: 荒漠化概念, 土地退化, 水土流失

Abstract: Desertification ia a global environment problem. Based on the achievements in scientific research in recent years and conbined with the national conditions, some rustic opionions on the conception of desertification are raised in the paper, which think about that water and soil erosion is one of the major types of desertification, also an improtant restricting factor of economic development in humid and subhumid regions of eastern part of our country. Paying attention to and making the study on land degradation in the region have an important significance both in theoretic study of desertification and its social practice.

Key words: Conception of desertification, Land degradation, Water and soil erosion