( 7 ) during the process of water consumption , soil water almost lost from the whole profile . the great depth that resulted from evapotranspiration formed soon , but not gradually . infiltrated water was mostly consumed by evapotranspiration during ra ( 7 )在以土壤水分消耗为主的时期，土壤蒸发时水分的整体移动性能较强，最大蒸发蒸腾作用层深度很快形成，并不是一个“由浅而深”的渐进过程。
The transpiration of neorgelia carolinae meyendor ffii was not distinctly affect hi by enhanced uv - b radiation in a short - term , yet it was increased initially and then decreased with the increase of exposure time , and the greater decrease with higher uv - b radiation 短期内uv - b辐射对红彩凤梨的蒸腾作用无明显影响，但随时间的延长，其蒸腾作用先增强后减弱，且随uv - b辐射的强度的增加其减弱的程度加剧。
Lawn photosynthetic , transpiration and water consumption chatacter go through mostly four seedtime : ( 1 ) lawn physiology development - individual level phases ; ( 2 ) law ecology development - community level phases ; ( 3 ) lawn drought resistance mechanism - molecule level phases ; ( 4 ) theory application in practice - ecosystem level phases 草坪光合、蒸腾作用及耗水生态特性研究主要经历了四个发展阶段： ( 1 )草坪生理学发展? ?个体水平阶段； ( 2 )草坪生态学发展? ?群落水平阶段； ( 3 )草坪抗旱机理? ?分子水下阶段； ( 4 )理论应用于实践? ?生态系统水平阶段。
Photosynthesis and transpiration have no obvious difference between different age s . viciifolia , but they have consanguineous physiological responses to environmental factors such as photon flux density , air temperature and the content of soil water . compared with caraganar , s . viciifolia formed the physiological mechanics of less photosynthetic rate and less tranpiration rate to resist drought 狼牙刺的净光合速率同光合有效辐射、大气温度和二氧化碳浓度之间没有显著相关性，与土壤含水量显著正相关；蒸腾作用与光合有效辐射、土壤含水量及空气温度有很好的正相关性，与大气湿度有负相关性。
The hydrologic cycle , a major topic in this science , is the complete cycle of phenomena through which water passes ， beginning as atmospheric water vapor , passing into liquid and solid form as precipitation , thence along and into the ground surface , and finally again returning to the form of atmospheric water vapor by means of evaporation and transpiration 水循环，自然科学中的主要课题，通过水的流动形成一个完整的圈的现象，大气水转化液体和固体的形式形成降水，然后，沿着地表或地下流动，最后通过蒸发和蒸腾作用又变成大气水的形式存在。
However , enhanced low dose of uv - b radiation was beneficial to the growth of neorgelia carolinae meyendor ffii . ( 2 ) the effects of uv - b radiation on transpiration of maize and neorgelia carolinae meyendor ffii the results show that the effect of enhanced uv - b radiation on transpiration of maize seedlings was not distinct , and the transpiration of grown - up plant was increased under enhanced uv - b radiation ( 2 ) uv - b辐射对玉米和红彩凤梨蒸腾作用的影响增强uv - b辐射对c .植物和cam植物光合作用的形响通过对增强uv - b辐射下玉米和红彩风梨燕腾速率和气孔导度的检测分析表明， uv - b辐射对玉米幼苗的燕腾作用影响不大，而使成株的燕腾作用增强了。
The changes of leaf water potential , water deficiency , water - holding ability under drought stress conditions were measured . the water parameters were calculated by using pressure - volume technique , also the abilities of maintaining turgor and adjusting osmotic potential of the four species were comprehensively evaluated . the effects of drought stress on photosynthesis , transpiration and water use efficiency were studied 研究干旱胁迫下叶水势、叶水分饱和亏缺及叶保水力的变化；应用压力室和pv技术测定四个树种多项水分参数，并对四树种渗透调节和维持膨压能力进行综合评定；研究干旱胁迫对光合作用、蒸腾作用及水分利用效率的影响；测定生长指标及水分胁迫下苗木的生物量分配。
