This kind of channel evolution is affected mainly by the basement tectonic activity in Hebei Plain.
造成河道这种演化特点的主要原因是河北平原基底活动构造等因素的影响。
2
In addition to a tectonic factor in a few subsidence areas, the causes of the ground subsidence of Hebei plain are mainly related to concentrated over-extraction of ground water.
河北平原地面沉降的原因，除少数有构造运动的因素以外，绝大多数都是集中过量开采地下水造成的。
3
The forming and changing of Lan-Yang Plain was affected by the tectonic sinking, fluctuation of sea level, and alluvial process.