runoff factor

Rainfall runoff is the main factor affecting the formation of nonpoint pollution.

降雨径流是形成非点源污染的主要影响因素.

And use the relevant analysis and the grey relational analysis method to find the relationship between climate factor and runoff with four rivers.

运用相关分析及灰色关联分析方法对四条河流的气候因子与径流的关系进行分析，得出了影响各河流径流变化的主要气候因子。

This paper deals with the relationship between an amount of sediment transport and runoff factor.

本文通过对输沙量与降雨径流因子研究。

The results showed that: ( 1) Runoff ratio in farming and grass slope lands were decreased with year; Rainfall was the most important factor to affect runoff;

结果表明：（1）农作区和荒草区的径流系数都随着年限的延长而降低并达到稳定，降雨量成为影响径流量的唯一主导因素；

The main factor which leading to unhealth include pollution, reduction of runoff, overfishing.

导致不健康的主要响应因子依次为污染、径流减少、捕捞过渡。