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首页> 外文期刊>Scientific reports. >Effects of soil water and heat relationship under various snow cover during freezing-thawing periods in Songnen Plain, China
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Effects of soil water and heat relationship under various snow cover during freezing-thawing periods in Songnen Plain, China

机译：中国松嫩平原冻融期间土壤水和热关系在中国冻融期间

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摘要

In this study, the spatial variations of soil water and heat under bare land (BL), natural snow (NS), compacted snow (CS) and thick snow (TS) treatments were analyzed. The relationship curve between soil temperature and water content conforms to the exponential filtering model, by means of the functional form of the model, it was defined as soil water and heat relation function model. On this basis, soil water and heat function models of 10, 20, 40, 60, 100, and 140?cm were established. Finally, a spatial variation law of the relationship effect was described based on analysising of the differences between the predicted and measured results. During freezing period, the effects of external factors on soil were hindered by snow cover. As the snow increased, the accuracy of the function model gradually improved. During melting period, infiltration by snowmelt affected the relationship between the soil temperature and moisture. With the increasing of snow, the accuracy of the function models gradually decreased. The relationship effects of soil water and heat increased with increasing depth within the frozen zone. In contrast, below the frozen layer, the relationship of soil water and heat was weaker, and the function models were less accurate.
机译：在这项研究中，分析了裸陆（BL），天然雪（NS），压实雪（CS）和厚雪（TS）治疗下的土壤水和热量的空间变化。土壤温度和水含量之间的关系曲线符合指数滤波模型，借助于模型的功能形式，它被定义为土水和热关系功能模型。在此基础上，建立了10,20,40,60,100和140Ω厘米的土壤水和热功能。最后，基于预测和测量结果之间的差异进行了描述了关系效果的空间变异规律。在冻结期间，通过雪覆盖阻碍了土壤上的外部因素对土壤的影响。随着雪增加，功能模型的准确性逐渐提高。在熔化期间，通过雪光渗透影响了土壤温度和水分之间的关​​系。随着雪的增加，函数模型的准确性逐渐减少。冰冻区内土壤水和热量的关系效应增加。相反，在冷冻层下方，土壤水和热的关系较弱，功能模型较低。

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