全省历年平均最大冻土深度变化呈减小趋势，各分区的变化趋势与全省的变化趋势基本相同，冀北高原区变化幅度最大。
In the different area, the trends of change are similar, but the degree of charging is maximum in the north altiplano.
全省历年平均最大冻土深度变化呈减小趋势，各分区的变化趋势与全省的变化趋势基本相同，冀北高原区变化幅度最大。
In the different area, the trends of change are similar, but the degree of charging is maximum in the north altiplano.
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