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作 者 ：吕久俊^1,2;李秀珍¹;胡远满¹;王宪伟^1,2;孙菊^1,2

期 刊 ：应用生态学报 2008年 19卷 10期 页码：2271-2276

摘 要 ：基于1981—2000年间中国东北地区的气候要素和雪深数据，将冻结数模型应用于中国东北的多年冻土地区，研究了冻结数模型在东北多年冻土分区的可适用性.结果表明：中国东北地区的多年冻土以不连续多年冻土为主，其多年冻土区包括除岛状多年冻土以外的断 续多年冻土（大块多年冻土）、岛状融区多年冻土（大块-岛状多年冻土）和山地多年冻土.对不同时期区划图进行比较，冻结数模型的模拟结果基本能够反映研究区当前多年冻土的分区状况.大兴安岭不连续多年冻土南界可向南延伸至阿尔山附近，其他山地多年冻土和小兴安岭伊春地区的多年冻土在模拟结果中也得到体现.

Abstract:Based on the 1981-2000 observation data of climate factors and snow depth in Northeast China, frost number model was applied to approach its applicability in the regionalization of the permafrost in this area. The results indicated that the permafrost in Northeast China was dominated by discontinuous permafrost, including large piece permafrost, large piece and island-like permafrost, and alpine permafrost. The comparison of permafrost regionalization maps in different periods showed that the simulation results of the model could reflect the recent distribution status of the permafrost in Northeast China. The southern boundary of the discontinuous permafrost could reach to Aershan Mountain region, and the other alpine permafrost as well as the permafrost of Yichun in Xiaoxing’an Mountains could be also distinguished by the model.

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