| 1. | Dynamic characteristics of phosphorus in surface water of paddy field and its potential environmental impact
水稻田表水磷素的动态特征及其潜在环境效应的研究 |
| 2. | The infiltration process of the water on the surface is analysized under rainfall conditions , the two - dimensional mathematical model and its boundary conditions are presented
分析了降雨条件下地表水入渗的过程，提出了降雨条件下非饱和渗流的二维数学模型及边界条件。 |
| 3. | 5 . the dynamic change of the concentration of three kinds of nitrogen indicated that there was an positive relationship between the concentration of nitrogen in the surface water and n application amount
田表水中三氮浓度的动态变化情况表明田表水体中氮素的浓度与施氮量有极其明显的正相关。 |
| 4. | Climatic variation is a major factor of affecting the rate of desertification . the sustained period of water deficit is a direct cause of desertification in arid and semi - arid areas
其中，气候变化是控制沙漠化进退的首要因素，陆表水持续亏损则是导致干旱、半干旱地区土地沙漠化发展的直接原因。 |
| 5. | Investigated the water resources volume and quality and exploitation condition , conducted water balance for the present condition at 75 and 95 probability levels , and listed the problems in water resources development and management . 4 . two methods , one looked into the percentage of surface water and groundwater ; and the other introduced fuzzy set theory , and took the social economy and water system as one system for analyzing
4 、对全市水资源开发利用程度用两种方法进行了分析，一是用传统的方法单一地对地表水、地下水的开发利用量占资源量的百分数进行了分析；二是引入模糊综合评判的方法，将社会经济和水资源纳入一个系统进行分析研究，较为客观地评价了水资源的开发利用程度，两种方法的评价结果基本上是一致的。 |
| 6. | The coupling analysis program of surface flow and subsurface flow over porous media is developed based on the conversion principles of water on the surface under rainfall conditions . a new method to judge the saturation of the surface is proposed in this thesis , the convergence is speeded up and the cpu time is saved by using this method
根据非饱和土上水的转化机理，编制了降雨条件下地表水入渗和产流耦合的计算程序，并根据土-水特征曲线，提出了判断地表饱和的条件，根据此条件，加速了收敛速度，节省了cpu的时间。 |
| 7. | The alteration procedure of the underground water level is simulated under drizzle and storm rainfall conditions respectively adopting the coupling fem analysis program of surface flow and subsurface flow . the numerical simulation of the underground water level shows that the drain ditch installed over the slope does not have an notable effect on the underground water level
利用降雨条件下地表水入渗和产流耦合的计算程序，模拟了小降雨强度和大雨强度对地下水位变化的影响，并用数值计算给出了地表排水沟对地下水变化的影响不是很显著的结论。 |
| 8. | Our conlusion is : during the coruse of the nov in el - nino year ( start from the westerly anomalous ) to apr of next year , it is just the intensity of east asian monsoon that influents the sst variety in kuroshio region . the heat flux is the bridge links the two facts . and the gene which affects winter monsoon is the pea circumfluence
分析还显示影响黑潮海温异常的主要机制有：由赤道中太平洋西风异常而产生的pea遥相关、夏季太阳辐射的加强、低纬向高纬暖水输送的增加及黑潮自身海表水的辐合。 |
