从时间和控制因子两个角度，初步探讨了蒋家沟流域产沙预测模型。
An elementary attempt concerning the model for predicating sediment yielded by debris flow at the Jiangjia Gully has been done in term of time and control factors.
沟槽是径流与输沙通道和侵蚀主体，沟槽侵蚀监测对揭示水土流失规律和进行流域产沙模拟有重要意义。
Monitoring of groove erosion could not only help to know the soil erosion rules, but be very useful for the production of sediment at small watershed and regional scales.
但是，由于人口的增加，土地利用结构与垦殖指数都不会有明显的变化，所以流域的产沙不可能有大幅度的减少。
But the land use structure and reclamation index will not vary obviously with an increase of population, therefore, the sediment load from the river basins will not decrease greatly.
近年来，我国在土壤侵蚀产沙模型方面进行了大量研究，建立大量的坡面、流域及区域侵蚀产沙模型。
There are a lot of studies on soil erosion models in China in the recent years, and many hillslope models, watershed models and regional models have been built up.
该文以纸坊沟流域为例，分析了治理小流域侵蚀特征、产沙特征及综合治理减沙效益。
The features of erosion, sediment yield and sediment reduction by the comprehensive controlling are studied in Zhifang gully catchment.
流域产流面积的空间变化对其产沙、供沙的时空输入特性具有制约作用。
The spatial variability of runoff area has a great effect on the time-space input of sediment supply into rivers.
基于大量实测资料，用经验统计方法研究了人类活动和降水变化对嘉陵江流域侵蚀产沙的影响。
Based on hydrometric and meteorological dada, effect of human activities and precipitation on sediment yield of the Jialingjiang River basin has been evaluated by using empirical statistical approach.
沟壑区的不同部位具有不同的侵蚀产沙现象，并在不同的空间尺度上表现出迥异的水沙运动规律。为此需将流域分为坡面与沟道两大系统分别研究。
Different positions in gully area have different phenomena of erosion and sediment yield, and even represent disparate patterns of water and sediment processes in different watershed scales.
流域泥沙与非点源污染负荷的模拟与预测是水土保持和水污染控制管理的重要基础。 暴雨产沙与产污量过程的计算是模拟预测的一个重要环节。
For water and soil conservation and water pollution control, it is very important to simulate and predict the yield of sediment and pollutant during storm-runoff.
目前关于流域侵蚀产沙与输移过程随流域尺度复杂变化的研究，缺乏应有的广度和深度。
Now researches about soil erosion and sediment transport course with varying watershed scales lacks certain extent and depth.
目前关于流域侵蚀产沙与输移过程随流域尺度复杂变化的研究，缺乏应有的广度和深度。
Now researches about soil erosion and sediment transport course with varying watershed scales lacks certain extent and depth.
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