荒漠化评价研究进展

通过论述国内外荒漠化评价方法的研究进展和当前荒漠化评价理论中存在的问题,展示了3S技术应用于荒漠化评价与监测的趋势以及进一步发展和完善荒漠化基础理论与评价体系的必要。同时,作者在将荒漠化概念理解为“自然因素与人类活动共同作用所造成的以地表出现类似荒漠景观为标志的严重土地退化”基础上,提出了红色荒漠化概念,即指我国南方红壤丘陵区在人类不合理经济活动和脆弱生态环境相互作用下,因流水侵蚀作用而形成、以地表出现劣地为标志的严重土地退化,并做出基于3S的红色荒漠化评价与监测的技术路线设计。即：1)确定红色荒漠化生态基准的时空尺度;2)建立各种红色荒漠化典型类型的数据库;3)基于3S的红色荒漠化评价与监测技术方法。

The Research Progress on Desertification Evaluation

Overpass treating the research progress on the method of desertification evaluation and the problem existed in the theory of desertification evaluation ,The paper bring forth the technical trend on monitoring and assessing of desertification based on 3S and the need of developing and perfecting the basic theory and evaluation system on desertification . At one time, based on explaining desertification as "the serious land degradation marked by the occurrence of desert-like condition on ground surface and caused by interactions between irrational human activities and vulnerable eco-environment", The author put forward the Conception of Red desertification , meaning the serious land degradation marked by the occurrence of bad land on ground surface and caused by interactions between irrational human activities and vulnerable eco-environment rang in red earth hilly areas of southern china, and make out a technical framework on monitoring and assessing of Red Desertification based on 3S:1) to ascertain the scale of time and space on Red desertification zoology benchmark; 2) to set up the databank on all model types of Red desertification;3)the method of monitoring and assessing Red Desertification based on 3S technology.