If special attention were not paid to these thresholds, the immoderate expansion of the oasis would take place, thus giving rise to many environmental and ecological issues.

• 在绿洲经济发展过程中,无视这些阈限的制约,就会出现绿洲规模扩张的无度化,并产生一系列环境、生态问题,导致绿洲人地关系的极度失调。