现代农业科技Issue(16)：207-209,214,4.
大连地区冻土特征及影响因素
Permafrost Features and Influence Factors in Dalian Area
张艳芳 1季贺成2
作者信息
- 1. 辽宁省建平县气象局 辽宁建平 122400
- 2. 喀左县气象局
- 折叠
摘要
Abstract
Using the data of Dalian area nearly 10 years of frozen soil observations and ground temperature to analyzed the maximum depth of frozen soil of Dalian,the date of freeze and thaw,the change characteristics and spatial distribution characteristics of frozen soil duration,and discussed the influence factors of frozen soil of Dalian region.The results showed that the last 10 years,the depth of Dalian soil freezing changes along with thick,thin,thick.The frozen soil of Dalian region had obvious seasonal changes.On the whole,the starting and ending date of frozen soil was both postponed trend,and the postponed amplitude of completely thawed date was larger than the postponed amplitude of frozen date.The duration of Dalian permafrost was increasing and the annual variation of duration of permafrost was large.In Dalian area,the trend of changes of maximum depth of frozen soil was contrary to ground temperature in winter,the maximum depth of frozen soil was increasing with the latitude gradually deepened.关键词
冻土特征/变化特点/影响因素/辽宁大连Key words
permafrost features/change/influence factors/Dalian Liaoning分类
天文与地球科学引用本文复制引用
张艳芳,季贺成..大连地区冻土特征及影响因素[J].现代农业科技,2015,(16):207-209,214,4.
