THE DYNAMIC CHANGE OF SOIL WATER AND ITS FACTORANALYSIS IN THE LOW PLAIN OFWESTERN JILIN PROVINCE

摘要

According to a lot of dynamic monitoring data of precipitation, soil water, groundwater and surface water, the temporalrnand spatial variation law of soil water (or soil moisture) content and its influencing factors in the western plain area of Jilin Provincernare analyzed. It is thought that relationships existed in the spatial distribution of soil water content with formation's character;rndifferent target year and different months, the soil water content is different; generally, surface soil water content increases graduallyrnfrom June to July, soil water moves downward, and it decreases in August to September. Influencing factors of soil water contents arernthe climate, geological conditions, irrigation, groundwater level and geographic environment. Among these, precipitation is the masterrnelement, geological conditions are the factors controlled by the space, and irrigation, groundwater level and geographic environmentrnare influencing factors.