Forest litter has considerable eco-hydrological effects in retarding surface runoff, trapping sediment, and equilibrating soil water and heat status.
森林凋落物具有阻滞径流、拦截泥沙和均衡土壤水热状况等功效。
Based on the basic equations of simultaneous soil water and heat transfer during soil freezing, the coupled equation of moisture and heat is deduced.
利用土壤水分迁移方程和热传导方程,采用中心差分格式并在一定假设前提下建立起冻土水热耦合迁移数学模型。
Among them: flowerpots whose color warns when the soil is drying out, blackboards using water instead of chalk that could be erased by a pulse of heat, and even cars that change color in the rain.
其中包括:当土壤正在变干之时,凭颜色发出警告的花盆;用水笔代替粉笔写字,用热脉冲可以擦除字迹的黑板;甚至包括在雨中变化颜色的汽车。
Study of Effects of the Concrete Mulch on Movement of Soil Water and Soil Heat Transfer.
硬覆盖对土壤水热传输及作物生长发育影响的试验研究。
Xinjiang is with advantaged resource of water, soil, light and heat.
新疆具有得天独厚的水、土、光、热资源。
Experimental investigation of heat and water transfer of sandy soil with air convection was done.
实验上,对大气对流环境条件下土壤内热、水分迁移过程进行了研究。
A so-called halophyte, the briny succulent thrives in hellish heat and pitiful soil on little more than a regular dousing of ocean water.
它是所谓盐土植物,或海水的多汁植物,只要定期灌溉海水,即使天气酷热,土壤贫瘠,盐角草属植物仍可茁壮成长。
Soil evaporation and moisture and heat transport are important constitutes of energy and water balance of soil surface.
土壤蒸发与水热传输是地表能量与水分平衡的重要组成部分。
Coupled heat and water transfer in unsaturated soil was studied both theoretically and experimentally.
对土壤中热和水分迁移过程进行了数值模拟及实验验证。
The formed membrane improved heat energy status of the soil by restraining soil water to evaporate and absorbing more solar energy.
该膜抑制土壤水分蒸发,利于吸收较多的太阳能,从而改善土壤中的热状况。
Therefore, Maize-soybean intercropping could make full use of the soil water and light, heat, air resources, and improve water use efficiency because of their high-low structure.
大豆、甘蓝与玉米间作可以充分利用不同层次的土壤水分,可以形成高低搭配的格局,充分利用光、热、气等资源,提高作物水分利用率;
Based on the energy state of soil moisture content, soil hydrodynamics studies water flow, solute and heat transport in unsaturation soil.
土壤水动力学是以土壤中水分的能态为基础研究非饱和土壤中水分、溶质和热量运移问题的学科。
Experimental investigation on heat and water transfer of sandy soil with air convection are carried out.
对大气对流环境条件下砂土内热湿迁移过程进行了实验研究。
Based on the Winkler theory, the finite element model for directly buried hot water heat-supply pipeline is founded by using ANSYS software, and the effect of soil on pipeline is simulated.
基于文克勒理论采用ANSYS软件建立了直埋热水供热管道的有限元模型,模拟了土壤对管道的作用。
After that it is pointed out that compared with soil density changes, water content change can result in more variations of coefficient of thermal conductivity and specific volume heat of loess.
相对于随密度的变化,黄土导热系数和比热容随含水量的变化尤为显著,含水量变化可以引起热参数较大的变化。
Tarim irrigation area is located in the warm-temperature zone with plenty of light, heat, soil and water resources which are favorable conditions for the development of agriculture.
本文根据土地生产潜力和人口承载力计算模型 ,确定在不同生活水平要求下塔里木灌区适当的人口规模 ,为塔里木灌区农业资源的合理适度开发提供参考依据。
Tarim irrigation area is located in the warm-temperature zone with plenty of light, heat, soil and water resources which are favorable conditions for the development of agriculture.
本文根据土地生产潜力和人口承载力计算模型 ,确定在不同生活水平要求下塔里木灌区适当的人口规模 ,为塔里木灌区农业资源的合理适度开发提供参考依据。
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