2 . by detection and analysis on litter accumulation , water ? olding capacity of the litter and interception of main types of forests , its waterolding capacity , intercepting role , water storage and soil reduction of litter were studied 2通过对祁连山水源涵养林凋落物累计量、枯枝落叶持水能力以及截留作用测定分析，研究了枯落物叶层的持水、截留作用和蓄水保土效益。
A 31 - year - old woman police officer , being threatened by the workers armed with water pipes , tried to use her extendable baton to stop the workers but to no avail despite warning was given . she then drew her revolver as a precaution 一名三十一岁女警被手持水喉通的工人恐吓，她给予警告及尝试使用申缩警棍阻止工人无效后于是拔枪以作戒备，期间枪头并没有指向任何人。
The water - holding capacity of altinglia gracilipes , schima superba , fokienia hodginsii and cunninghamia lanceolata planted under cunninghamia lanceolata ecological public welfare forest was studied from forest canopy , shrub and herb layer , litter layer and soil layer 摘要分别从林冠层、林下植被层、凋落物层及土壤层对杉木人工生态公益林林冠下营造的细柄阿丁枫、木荷、建柏和杉木纯林的持水功能进行了研究。
Throug the study on irrigation quota and irrigation times for licorice root planted in arid sandy land of middle ningxia , the result shows : by increasing irrigation frequency and irrigation fixed quantity properly , it can play a positive role in the conserving and increasing water - holding capacity in arid - belt sandy area 摘要通过对宁夏中部干旱带沙地种植甘草的不同灌水定额及次数的研究，结果表明，适当的增加灌水次数和灌水定额对于保持和增加干旱带沙壤土持水率具有积极的作用，有利于植物的生长发育。
The dynamics equations of soil water vaporizing and ammonia volatilizing hcluding the factors of water and temperature , and the dynamics - like equation of urea transforming into ammonium nitrogen in soil are founded in the paper , by taking the effect of interaction of water and temperature as subject , the dynamic change character of object studied as basis and using principle of chemical dynamic ; the empirio - equations of soil water retention curve including temperature and the empirio - equations including temperature between water potential of millet seedling leaves and soil water are founded in order to make the equation of relation between water potential and water content in soil suit the demand of temperature change much better 本文以水热耦合效应为主题，基于研究对象的动态变化特征，应用化学动力学原理，建立了含水、热因子以及水热耦合效应的土壤水分蒸发、肥料氨挥发动力学方程，以及施入土壤中的尿素转化为铵态氮的动力学型方程；为使水势?含水量关系式更好适应变温条件应用的要求，建立了含温度因子直接表征土壤持水曲线的经验方程，以及含温度因子的谷苗叶水势与土壤含水量关系经验方程。
5 . the empirio - equations of soil water retention curve including temperature is developed on the basis of the empirio - equations of soil water retention curve without temperature by studying the quantitative relation between water absorption capacity and soil water content . in addition , the empirio - equations including temperature of millet seedling and soil water content is got 5 .通过对不同温度下土壤水吸力与土壤含水量关系的研究，依据土壤持水曲线经验方程e = as一，建立了含温度因子直接表征土壤持水曲线的经验方程e = e ‘ rbt ， s一‘ 。
