干容重越大，土骨架能够承受荷载的有效面积越大，冻土的强度也越大。
The greater the dry density is, the greater the load bearing area of soil particles is, and the greater the strength of frozen soil will be.
冻土的强度是由土颗粒与冰的结合强度所决定，冰含量(或初始含水量)和干容重是非饱和冻土强度的主要影响因素。
Ice content or initial water content and dry density are the factors that control the strength of unsaturated frozen soil.
在冰川附近觅食的海鸟正失去他们摄食与休息的海冰，永冻土的溶化使得他们用以繁殖的湿地变干。
Seabirds that forage near glaciers and sea ice are losing their feeding grounds and resting places, while thawing permafrost threatens to drain their wetland breeding habitat.
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