| 1. | Application of nervous network in reduction calculation of runoff amount
神经网络在径流水量还原计算中的应用 |
| 2. | The model can not only separate the effect of soil and water conservation measures on variation of river basin runoff amount
研究表明，在佳芦和秃尾河流域，水土保持使流域径流量平均减少10 % ~ 22 % 。 |
| 3. | With same total rainfall , runoff lasted longer under the low rainfall intensity than that under the higher one , but the total runoff amount is more under the higher rainfall intensity
农田径流液中氮素的平均浓度和氮素径流累积流失量提高，两者间呈显著正相关。 |
| 4. | According to the investigation of the dykes in xinxiang reach of the yellow river , the annual volume of soil erosion caused by storm runoff amounted to 0 . 07 million cubic kilometres
根据我们对新乡地区内沿黄大堤的调查，每年暴雨径流侵蚀大堤的土方量约达7 104m3以上。 |
| 5. | One exception is tu - wei - he catchment where underground runoff is the primary part of river flow . its runoff season distribution is much uniformity . its runoff amount of july to august accounts is 24 % of the annual runoff amount
但以地下径流补给为主的秃尾河，径流量的季节分配相对均匀， 7 8月份径流量占年径流量的24 。 |
| 6. | The proportions of soil and water losses caused by heavy rain ( or storm ) were 65 % ~ 75 % and > 80 % respectively . there was extremely significant positive correlation between rainfall and runoff amount , while not - significant correlation between rainfall and soil loss was found
降雨量与径流量的均呈极显著线性相关，降雨量越大，径流量越大;而降雨量与土壤流失量的相关性明显小于降雨量与径流量的相关性，影响土壤流失量的因素比径流量复杂。 |
| 7. | In a year the change of river flow is drastically and season distributes of runoff in river is mainly centralize in the summer in jia - lu - he , qiu - shui - he and pian - guan - he catchments . for example , the runoff amount from july to august accounts for 41 % , 58 % and 57 % of the annual runoff amount in the above three catchments , respectively
所选四条流域中，佳芦河、湫水河和偏关河三条河流径流量年内变化剧烈，季节分配不均，集中度高， 7 8月份径流量分别占各流域年径流量的41 、 58和57 。 |
| 8. | The impacts of soil and water conservation on river flows have been analyzes by comparison of the runoff amount of prophase and anaphase period . the results indicated that the precipitation producing waters and annuals fluctuate of runoff amount in each catchment have been decreased mainly by soil and water conservation
根据临界年份把河川径流量分为前期和后期两个时期，比较分析了水土保持对河川径流量年际变化的影响，指出：水土流失综合治理使流域降雨产流量减少，径流量年际波动幅度降低。 |
| 9. | At last , on the basis of analyzing the characteristics of rainfall and runoff - producing and flow concentration and taking the example of multiple - underlying surface of jing hua school area and stressed laboratory building materials of hydrology and environment of shann ' xi , and thus rainfall runoff amount in the cultural areas and roof underlying surface are calculated , and utilizing foreground of rainfall are analyzed
最后，在对降雨特性、下垫面产汇流特性分析的基础上，以西安理工大学金花校区和陕西省水资源与环境重点实验室屋顶为典型小区，简单的计算分析了西安市文化区和屋顶下垫面的降雨径流量。从量的角度分析了雨水利用前景。 |
| 10. | The analyzed results are as follows : the late 1960 ' s cutoff of riverbends increased both the runoff amount and the sediment transport amount of the lower reach of jingjiang river , while the sediment deposition decreased in the lkngting lake area ; after the mid 1980 ' s , both the middle reach of yangtze river main stem and the dongting lake occurred a trend of decreasing annual sediment transport as a result of decreasing sediment releasing from the upper reach of yangtze river ; and in the recent 3 years ( 2003 - 2006 ) , the three gorges reservoir first impoundment additionally reduced the sediment concentration in the middle reach of yangtze river flow with a long time , so a distance would be quite long for suspended sediment recovery , but the distance for bed - material load of suspended sediment recovery would be quite short
分析结果表明： 20世纪60年代下荆江裁弯后，三口（松滋口、太平口、藕池口）分流分沙减少，下荆江径流量和输沙量相应增加，洞庭湖泥沙淤积减少； 80年代中期以后，长江中游干流及洞庭湖出口的年输沙量呈减少趋势，城陵矶至武汉河段河床由淤积转为趋向冲淤平衡；三峡工程初期蓄水运用后，长江中游含沙量沿程恢复距离较长，但床沙质部分恢复距离相对较短。 |
