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冻结数模型在中国东北多年冻土分区中的应用

吕久俊1,2;李秀珍1;胡远满1;王宪伟1,2;孙菊1,2   

  1. 1中国科学院沈阳应用生态研究所, 沈阳 110016;2中国科学院研究生院, 北京 100049
  • 收稿日期:2007-11-28 修回日期:1900-01-01 出版日期:2008-10-20 发布日期:2008-10-20

Application of frost number model in Northeast China pepmafrost regionalization

LÜ Jiu-jun1,2; LI Xiu-zhen1; HU Yuan-man1; WANG Xian-wei1,2; SUN Ju1,2   

  1. 1Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China;2Graduate University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2007-11-28 Revised:1900-01-01 Online:2008-10-20 Published:2008-10-20

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.

关键词: 淹水深度, 碱蓬, 泥沙埋深, 外源氮输入, 黄河三角洲

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.

Key words: exogenous nitrogen input, water depth, sediment burial, Suaeda salsa, Yellow River Delta