军塘河流域上游山区融雪期土壤湿度特征分析

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.

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

【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 soil humidity,This discovery will help to provide decision support for spring snowmelt flood warning from Juntang River Basin.