军塘河流域上游山区融雪期土壤湿度特征分析  

Characteristic Analysis of Soil Humidity of Upper Reaches Mountain in Juntang River Basin in Snowmelt Period

作　　者：魏召才[1,2] 刘志辉[1,2,3] 杨绍富[1,2] 秦艳[1,2] 

机构地区：[1]新疆大学资源与环境科学学院,乌鲁木齐830046 [2]绿洲生态教育部重点实验室,乌鲁木齐830046 [3]干旱半干旱区可持续发展国际研究中心,乌鲁木齐830046

出　　处：《新疆农业科学》2010年第2期363-368,共6页Xinjiang Agricultural Sciences

基　　金：国家自然科学基金项目"‘3S’技术支持下的融雪洪水预警决策支持系统研究"(70361001);中国沙漠气象科学研究基金"积雪遥感与融雪洪水监测预测研究"(Sqj2007004);国家自然科学基金项目"基于干旱区流域融雪径流形成过程与机制的大气水文模式耦合研究"(40871023)

摘　　要：【目的】研究融雪期土壤湿度特征。【方法】以天山北坡军塘河流域为研究区,采用定点连续观测方法,利用2006、2007年两年融雪期观测的土壤湿度、土壤温度及气温资料,对比分析土壤湿度在融雪期内各层深度的变化情况以及与土壤湿度和气温之间的关系。【结果】近地面气温与土壤湿度存在较高相关关系,土壤湿度的时间变化均表现出减湿过程缓慢,增湿过程迅速特征,土壤湿度日变化表现为单峰单谷型波动。【结论】近地面气温与土壤湿度具有明显的影响作用,该结论将有助于为军塘河流域春季融雪洪水的预警提供决策支持。[ Objective] This paper studied the soil moisture characteristic of the snowmelt period. [ Method] This study takes Juntang River Basin in northern slope of Tianshan Mountain as the research area , chooses the fixed point in the research area to carry on continuously observes, based on observation of soil moisture and the soil temperature and the temperature material in 2006 and 2007, the changes of soil humidity in the snowmelt period, as well as the relationship between soil humidity and temperature were compared and analyzed. [ Result ] There were great corelations between air temperature near the ground and soil humildity. Both the spatital and tempotal variations of soil moisture indicate that the characteristic is slow in decrease and rapid in increase, the diurnal variation of soil moisture show the fluctuation of single - peak and single - valley type. [ Conclusion ] The temperature have obvious effect on soll humidity, This discovery will help to provide decision support for spring snowmelt flood warning from Juntang River Basin.

关 键 词：军塘河流域 融雪期 土壤湿度 

分 类 号：S152.7[农业科学—土壤学] P426.635[农业科学—农业基础科学]