多年平均径流量

WEPP对多年平均径流量和侵蚀量的模拟效果可满足要求。

The simulated accuracy of annual average runoff and soil loss by WEPP model was satisfied .

根据利津水文站实测资料，黄河多年平均径流量和输沙量分别为309.88×108m3、6.23×108t，且呈显著减少趋势。

The annual average runoff and sediment of the Yellow River is 309.88 × 108m3,6.23 × 108t according to the measured data of Lijin station , respectively , and decrease significantly .

结果表明，在10,20,30和40m这4个坡长条件下，WEPP模型对次降雨、年平均和多年平均径流量的模拟结果略差；

Results showed that simulated values of event runoff , annual runoff , and average annual runoff by WEPP model were not desirable for the slope lengths of 10 m , 20 m , 30 m and 40 m.

论森林对多年平均径流量的影响

The effect of forest on the normal runoff

森林增加还是减少多年平均径流量，至今仍是激烈争论的问题。

It is still an argumentative question today whether the forest is increasing or decreasing the normal runoff .

根据分析，本文认为：一般情况下，森林将使多年平均径流量减少，小面积造林减少得多，近似等于森林增加的蒸散发量；

Form the analysis it is concluded that the forest will decrease the average annual runoff due to silvicultural treatment .

本文在分析降水、蒸散发机制和观测实验资料的基础上，运用水平衡原理，揭示了森林对多年平均径流量影响的机理和两种观点对立的原因，从而使这一问题初步得到解决。

In this paper , the question is investigated and solved basically by using water balance principle based on the analysis of machanism of precipitation and evapotranspiration and observed data .

通过对嘉陵江北碚站多年平均径流量和输沙量的统计分析发现嘉陵江年均径流量和输沙量关系变化可分为4个时段，各时段年输沙量有明显递减。

Based on the statistical analysis on the average annual runoff and sediment load at Beibei station in Jialing River , it is found that the correlative relationship between the average annual runoff and sediment load therein has four stages with distinct degressions of the sediment loads .

其中多年平均径流量和输沙量的40.7%和52.7%来自金沙江，这对三峡水利枢纽工程关系重大。

40 . 7 % of the long term average runoff and 52 . 7 % of the long term average discharge of suspended load comes from the Jinsha River , which has important effect on the development of this river and the Three Gorge Key Water Conservancy Project .

该模型将拦蓄补源工程条件、社会经济发展、防治海水入侵密切联系起来研究，提出了多年平均入海径流量以及拦蓄补源新方案，具有流域水资源优化调度及预测模拟功能。

This model combined recharge structure condition , social economic development and control sea water invasion , can be used for simulating annual flow into the sea , new recharge scenarios and optimal catchment water resources allocating and forecasting .

通过对山西省各大河流多年平均最小月径流量和最大月含沙量、输沙量统计分析，计算河流生态环境用水量；

According to analyzing perennial average month minimum runoff volume , perennial average month maximum sediment concentration , perennial average sediment discharge , calculates river eco-environment water consumption .

根据辽宁多年平均降水量和径流量资料，应用距离权重反比插值法实现了降水的空间扩展；

In terms of average precipitation and runoff in Liaoning Province , spatial distribution of precipitation was obtained by inverse distance weighting ( IDW ) interpolation .