A new and complex methodology of assessment and illustration for drought and desertification should be worked out, based on more accurate local databases and national scale of evaluation, using a bottom-up approach.
66. 应当根据更准确的当地数据库和国家一级的评价，采用从下至上的办法，设计出新的和综合的方法，评估并图示干旱和荒漠化的情况。