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当前位置: 首页 > 文章 > 塔里木河下游河岸带水热传输过程模拟研究 干旱区研究 2015,32 (6) 1055-1060
Position: Home > Articles > Simulation of Heat and Water Transfer Process of Riparian Zone in the Lower Reaches of Tarim River Arid Zone Research 2015,32 (6) 1055-1060

塔里木河下游河岸带水热传输过程模拟研究

作  者：
苏里坦;李玉生;李兰海;刘迁迁
单  位：
中国科学院新疆生态与地理研究所;新疆水利水电科学研究院
关键词：
胡杨(Populus euphratica);水热传输;模拟;塔里木河
摘  要：
选择在塔里木河下游生长的胡杨(Populus euphratica)为供试材料,应用土壤-植被-大气传输(SVAT)系统的水热耦合模型,在野外观测试验的基础上,以常规气象站的基本观测要素和土壤剖面水热观测数据为模型的初始输入,对塔里木河沿岸胡杨林的蒸腾过程、土壤剖面水热的变化过程、根系吸水过程、胡杨林冠层-土壤层-大气层之间水热交换与能通量过程进行较小时间尺度上的野外定点研究。结果表明,土壤水分与温度的模拟值对观测值的平均相对误差分别为3.9%和7.1%。可见,土壤剖面水热的模拟值与观测值表现出较强的相关性。相比之下,能通量的日内观测与模拟效果相差很小,蒸腾潜热、感热、地热通量的观测与模拟的平均相对误差分别为16.7%、12.4%和20.6%。能量支出项主要是潜热,其次是感热,而土壤能量支出项主要是感热,总的感热支出要大于潜热支出,且感热变化起伏较大。研究结果对干旱区水循环模拟具有一定的参考价值。
译  名：
Simulation of Heat and Water Transfer Process of Riparian Zone in the Lower Reaches of Tarim River
作  者：
Sulitan;LI Yu-sheng;LI Lan-hai;LIU Qian-qian;State Key Laboratory of Desert and Oasis Ecology,Xinjiang Institute of Ecology and Geography,Chinese Academy of Sciences;Xinjiang Institute of Water Resources and Hydroelectric Sciences;
关键词：
Populus euphratica;;heat and water transfer;;simulation;;Tarim River
摘  要：
This paper simulated the water consumption of riparian Populus euphratica forests,the representative natural vegetation in the lower reaches of Tarim River,in a relatively small time scale based on the SHAW model.Conventional weather elements,vegetation parameter and hydrothermal data of soil profile were adopted as initial inputs of the model. The results showed that there is a lower deviation between the simulated value and observed value of soil moisture and soil temperature at riparian zone in the lower reaches of Tarim River. The relative errors of simulated values of soil moisture and soil temperature are respectively 3. 9% and 7. 1% against observed values. It can be seen that the simulated values of soil moisture and soil temperature are more approximate to the measured values of that. By contrast,energy flux showed a higher deviation between the simulated value and observed value.The relative errors of simulated values of sensible heat flux,latent heat flux and ground surface heat flux are respectively 16. 7%,12. 4% and 20. 6% against observed values. The latent heat flux expenditures of P. euphratica larger than the sensible heat flux expenditures of that,but soil energy expenditure was mainly sensible heat flux,expenditure of total sensible heat flux is greater than expenditure of total latent heat flux. The study provides the references for calculating the water balance and water cycle simulation.

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