| 含水量变化对土壤温度和水分交换的影响研究 |
| |
| 引用本文： | 李慧星,夏自强,马广慧.含水量变化对土壤温度和水分交换的影响研究[J].河海大学学报(自然科学版),2007,35(2):172-175. |
| |
| 作者姓名： | 李慧星 夏自强 马广慧 |
| |
| 作者单位： | 河海大学水文水资源学院,江苏,南京,210098;河海大学水文水资源学院,江苏,南京,210098;河海大学水文水资源学院,江苏,南京,210098 |
| |
| 基金项目： | 国家自然科学基金资助项目(50379007) |
| |
| 摘 要： | 土壤热容量是土壤热性质的重要参数之一.通过试验和分析,研究了地面土壤含水量日变化及含水量垂向分布变化规律,以及不同含水量对土壤温度的日变化影响.试验结果表明,土壤水分的运动和土壤中热量的传输是一个统一不可分割的系统,无地面水分补给时,土壤中的含水量变化与地温的日变化有关,土壤水的热运动是土壤层向蒸发面供水的最重要的因素之一.
|
| 关 键 词： | 含水量 土壤温度 土壤热容量 |
| 文章编号： | 1000-1980（2007）02-0172-04 |
| 修稿时间： | 2006-02-24 |
Effects of water content variation on soil temperature process and water exchange |
| |
| LI Hui-xing,XIA Zi-qiang,MA Guang-hui.Effects of water content variation on soil temperature process and water exchange[J].Journal of Hohai University (Natural Sciences ),2007,35(2):172-175. |
| |
| Authors: | LI Hui-xing XIA Zi-qiang MA Guang-hui |
| |
| Institution: | College of Water Resources and Environment, Hohai University, Nanjing 210098, China |
| |
| Abstract: | The thermal capacity is one of the important parameters to reflect the thermal property of soil.The regularities of daily variation of water content and the variation of its vertical distribution as well as the effect of water content on daily variation of soil temperature were studied based on experimental analysis.The result shows that the moisture movement and heat transfer in soil is a unified and indivisible system,that the variation of soil water content is closely related to the daily variation of soil temperature under the condition of no surface water recharge,and that heat transfer in soil water is one of the most important influencing factors on water supply from soil layer to evaporation surface. |
| |
| Keywords: | water content soil temperature soil thermal capacity |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《河海大学学报(自然科学版)》浏览原始摘要信息 |
| 点击此处可从《河海大学学报(自然科学版)》下载免费的PDF全文 |
|
