摘要
通过对国内外指标体系在指标选取与数据获得 ,分级量化与准确性校验方面存在问题的分析 ,认为目前荒漠化的分等定级有相当多的成分是用土地的绝对景观状态代替相对退化 ,影响了荒漠化分布范围、危害程度和防治效益的准确评估。土地退化生态基准初始面与终极面的恢复和确定 ,是建立规范科学指标体系的前提 ,由此提出了设计指标体系系统的三原则 :不同的生物气候带对应的生态基准面决定不同指标体系的地带性原则 ;
Desertification index system plays an important role in desertification research,as indicating both the level of dynamic mechanism of desertification and the contribution to the rehabilitaition of desertified land.Firstly,the problems concerning the selection,acquisition,quantification and checking about index are evaluated according to the criterion of standardization,simplicity and practicability.Then,the approach is made to the relationship between ecological base plane and indicators.Finally,based on the view that the establishment of ecological base plane is fundamental to ideal index system in the desertification monitoring and assessment,three principles to design index system are put foreward,which are respectively zonation,scale and landscape.
出处
《自然资源学报》
CSSCI
CSCD
北大核心
2000年第2期160-163,共4页
Journal of Natural Resources
基金
国家自然科学基金资助项目!(49971009)
广东省重点学科课题!(660020)资助
