王金花,张峰,师庆东

• 1:新疆大学绿洲生态教育部重点实验室

摘要(Abstract)：

地温为地-气系统研究的一个重要参数.克里雅河尾闾达理雅博依为塔里木盆地一典型的原始荒漠绿洲,对天然绿洲生态过程、形成机理及演化研究极具意义,而该地区地温等相关气象数据却极少发表.本文以达理雅博依所建首台区域气象站所采集的地温数据为基础,分析了2015年1月至2016年4月5～20 cm各浅层土壤温度的日变化及季节变化特征.结果表明:各层地温月平均值年内变化趋势较为一致,呈正弦曲线变化,7月为峰,1月为谷.各浅层地温月变幅随深度增加而减小,且波动幅度夏季最大,冬季最小.各层地温年平均值为14.8℃,低于大致同纬度的塔中气象站(16℃左右),且地温年变化升降较塔中相对缓和,显示绿洲与沙漠环境存在差异.各层土壤日变化亦基本呈正弦变化,随深度增加,日最高和最低值位相逐渐滞后,振幅亦随之减小;达理雅博依7月5 cm地温日最大值和最低值出现时刻明显晚于塔中,反映了二者土壤热容的不同.日最高值波动幅度高于日最低值,夏半年波动幅度又显著高于冬半年.

关键词(KeyWords)： 土壤温度;达理雅博依;天然绿洲

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金新疆联合基金项目(U1178303)和(U1703237)共同资助

作者(Author): 王金花,张峰,师庆东

DOI: 10.13568/j.cnki.651094.2019.03.002

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