摘要
小流域的农业生产主要以雨养农业为主,其集水效率是雨水集蓄利用工程的关键。以山东安口小流域为例,通过对影响小流域集水效率的主要因素——土壤入渗能力的试验,揭示土壤入渗对流域集水的影响,并利用径流系数法对集水量进行了估算,也具有较高的准确性。试验研究表明,在类似于安口流域的这类区域,土壤稳定入渗率较低,而径流系数较高,平均为0.46,因此利用(天然)径流场收集雨水发展雨养农业则极为有利。
The efficiency of rainwater harvesting utilization plays an importantrole in a small rain-fed agricultural
valley. With the Ankou Valley in Shandong Province as a study area, firstly, the influence of the soil infiltration
on the rainwater collecting in a certain area was elucidated, rainwater harvesting efficiency was estimated by
runoff coefficient method in hydrology. The experiment shows that the soil stabilization infiltration is less than
normal, but the average runoff coefficient is 0. 46, higher than in Loess Plateau. So in such valley, it is much
more advantage to develop rain-fed agriculture using the natural valley runoff area to collect rainwater.
出处
《水土保持学报》
CSCD
北大核心
2004年第5期72-74,150,共4页
Journal of Soil and Water Conservation
基金
山东省教委科技项目(J01L02)
关键词
小流域
集水效率
试验
山东
安口地区
Ankou
rainwater harvesting efficiency
soil infiltration
runoff coefficient
