生态阈限
- 网络ecological threshold
生态阈限-
干旱区绿洲规模的扩张在总体上要受到资源、环境与生态阈限的制约。
Generally , the expansion of the oasis in arid land is subjected to the restraints of these thresholds .
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本文对西北干旱区城市扩展的生态环境阈限、城市化进程中生态预警指标体系、预警方法以及预警程序进行了初步探讨。
In the research the ecological and environment warning threshold of the urban expanding , the warning index system , the warning model and working-procedure in the course of urbanization in arid area of North-west of China were studied .