积雪覆盖对松嫩平原黑土水分时空分布的影响

Snow cover is a common upper boundary condition in the black soil region of Songnen Plain during freezing-thawing period. In order to reveal the influences of snow cover on water distribution and variation in black soil of Songnen Plain, the spatio-temporal characteristics of soil total and liquid water contents under four different snow cover conditions were analyzed on the basis of field measured data. The results showed that different snow covers induced significant differences of soil total water content spatial distribution between soil profiles above 60cm and below 100 cm, and the variation process of soil liquid water content was delayed by snow cover and the big changes of soil liquid water content were mainly centered on the soil profile above 60 cm. The research results can provide scientific basis for the utilization of snow resources in the black soil region of Songnen Plain.