尽管难以在盐碱地里栽种树木，但覆盖地表和湿地的植被异常丰富，随着地下水位和PH值的细微变化而呈现不同的形态。
Though it is di? Cult to grow trees in the saline-alkali soil, the ground cover and wetland vegetation are rich and vary in response to subtle changes in the water table and PH values.
而水位异常图像出现的上升或下降形态，取决于井孔含水层系统在大震孕育过程的应力调整再积累阶段所处的构造部位。
However, decline or rise of water level anomaly depends on the tectonic position where the well aquifer lies in the process of stress regulation and re accumulation.
利用回归分析求解乌鲁木齐台同一钻孔内应变和水位的相关斜率，并用筛选法方差判定其异常，研究相关斜率和地震的关系。
The correlation slope of strain and water level in same borehole at the Urumqi station is computed by the regression analysis and the anomaly of slope is identified by the sieve variance method.
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