包气带为地表附近的植物根系提供水分。
The vadose zone supplies plant roots near the surface with water.
土壤吸收水分的能力减弱使土壤逐渐变得干燥，导致植被进一步减少，从而建立了一个渐进的地表退化循环。
The gradual drying of the soil caused by its diminished ability to absorb water results in the further loss of vegetation, so that a cycle of progressive surface deterioration is established.
一些人已经设计了各种算法，可利用卫星针对地表温度收集数据，计算出地球吸收和蒸发水分的速率。
Some have designed algorithms that use satellite data on surface temperatures to calculate the rate at which plants are absorbing and transpiring water.
传统的地热发电厂利用了这样一种自然系统，即水分下降至地壳的渗透岩层中，而后又受热蒸腾到地表。
Traditional geothermal plants exploit natural systems in which water seeps down into porous rocks in the ground and emerges back at the surface at a high temperature.
这块万里无云的天空下，地表温度上升、失去水分，从而造成地面上的物质越变越热、愈加干燥，但降雨的机会却丝毫未增加。
Under cloudless skies the surface heats and gives up its moisture, making things at ground level hotter and drier while not increasing the chances of rain.
在万里无云的天空下，地表水分蒸发，使地表更热、更干燥而无法增加形成雨的机会。
Under cloudless skies, the surface gives up its moisture, making the ground level hotter and drier while not increasing the chances of rain.
城市中因为缺少植物，地表使用了不挥发水分的材料，所以热量无法散掉，造成了城市热岛现象。
By replacing plants with impervious surfaces, cities trap heat, and create a phenomenon known as the urban heat island.
而这两个过程是：纵向和横向运动湍流热传输。湍流运动指的是热量和水分从地表或海洋表面转移到低层大气中的过程。
Turbulent motion refers to the process by which heat and moisture are transferred from the land or ocean surface to the lower atmosphere.
他们也学会了用薄膜盖住土地，这样可以最大程度地防止水分的蒸发，以达到保持住弥足珍贵的地表水的目的。
They have also learned how to better preserved the precious surface water by using the thin film to cover the soil so that the evaporation of the moisture from the ground can be minimized.
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。
Soil evaporation and moisture and heat transport are important constitutes of energy and water balance of soil surface.
在田间条件下，设计作物需水量时还应考虑地表径流和水分的渗漏与下渗的情况。
Under field conditions, surface runoff, water infiltration, and drainage should be taken into consideration when designing water demand for crops.
本文通过详实的资料和细致地野外调查，全面地分析了通辽地区的地表物质组成、水分状况及其植被状况。
Though full materials and many field experiments in study area, surface material compositions, moisture state and vegetation condition are analyzed comprehensively.
土壤蒸发是地表能量与水分平衡的重要组成部分。
Soil evaporation is an important proportion of energy and water balance of soil surface.
本文针对MODIS数据进行地表温度和热惯量的建模研究以及基于上述模型的土壤水分和地气间热交换的研究。
This paper focuses on the modeling of thermal inertia and land surface temperature using MODIS data and their applications in soil moisture and exergy exchange study.
地表缺水指数是通过基于亚像元的双层蒸散模型提取的，它既考虑了土壤的水分蒸发，又考虑了植被的蒸腾。
The surface water deficit index is extracted based on the dual-layer evapotranspiration model, including soil water evaporation and vegetation transpiration.
非饱和土壤中的水分是联系地表水与地下水的纽带，是田间作物赖以生存的源泉。
Unsaturated soils water is the connection of surface water and ground water, it is the source that the field crop living depends on.
结果指出：在北方地区，地表水分有其显著的演变规律，不同地区其变化规律不同。
The results indicate that there are significant characteristics of historical variations of surface hydrologic processes and regional differences in the arid-regions of North China.
这个水分距平作为衡量水分异常的指标可以更好地表现同一个地区同一时期不同年份的水分盈缺情况。
As a index of water abnormity, the water departured is more fit for measuring water profit and loss for the same period by years.
在风的作用下，地表上部空气的强制对流和表土层中的水分蒸发大大增强，对冻土层的热状况产生重要的影响。
Under the action of wind, forced convection of air above ground and water evaporation of top soil layer will be greatly enhanced.
第二阶段是由近地面微气象条件决定的水分凝结过程，所吸收水量受空气水汽压、地面温度和地表可利用能量的影响。
The second is the process of water condensation determined by air vapor, soil surface temperature and the available energy of soil.
火对水分的影响间接地表现在火后植被，地被物、土壤和环境的变化会影响水分循环、水质和水生生物。
The influence of fire on water is indirectly manifested in that the post fire changes of vegetation, ground cover, soil and environment affect water cycle, water quality and aquatic lives.
包气带水分、盐份的分布和运移对地表植被生长有着重要的影响。
The plants growing on the land surface can be affected by the occurrence and movement of water and salt in the aeration zone.
在利用微波辐射计进行对地观测的过程中，陆地表面特性参数（如土壤水分、土壤粗糙度和植被冠层）是土壤微波辐射的重要影响因素。
Observing the land with radiometer, the land parameters, such as soil moisture, soil roughness and vegetation layer, have great influences on the soil microwave emission.
随滴头流量增大，滴头周围地表积水区半径增大，水分在土壤中的径向运移距离增大，竖向入渗水量减少。
When dripping end flow increased, surface pond radius around drop increased, the moving distance in level of water increased, but the in leakage depth of water in vertical decreased;
可吸收水分与热量，调节地表局部空间的温湿度，对调节城市小气候、缓解城市热岛效应有较大的作用。
Absorbing heat and regulating temperature and humidity, it will keep under control local space micro-climate, contributing at the same time in contrasting the urban heat island effect.
结果表明：①地灌后地表蒸发与植被层的蒸腾更旺盛，散失的水分更多；
The results are as follows: (1) The evaporation and transpiration were larger after ground irrigation, which will speed up the loss of soil moisture content;
结果表明：①地灌后地表蒸发与植被层的蒸腾更旺盛，散失的水分更多；
The results are as follows: (1) The evaporation and transpiration were larger after ground irrigation, which will speed up the loss of soil moisture content;
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