摘要
引用森林水文实验站和国家水文基本站网中的森林流域和非森林流域的实测资料,进行同步期的对比分析。对于试验小流域或径流场,总结出林冠截留、树干径流和林地拦蓄的一些统计结果,并归纳得到可供利用的计算公式。对于大面积森林流域,主要从基本水文站网中,森林覆盖率明显不同而其它自然地理条件类似的测站进行对比分析,当干旱指数小于1.2的地区,森林使年径流增加,当干旱指数大于1.2的地区,森林使年径流减少。
The paper used the hydrological data witch comes from forest and non-forest basin of both forest hydrological test stations and the national general hydrological stations, and carried out contrast analysis. With regard to small watershed, the paper got the conclusional data on canopy interceptions, stemflows and ground losses, and made formulas in order to utilize these data. With regard to large watershed, the national hydrological stations were chosen on different forest cover rates when the geographical conditions were same or similar. Forest watershed make annual runoff increase when the drought index is less than 1.2. and decrease when the drought index is more than 1.2.
出处
《水资源与水工程学报》
2013年第2期138-144,共7页
Journal of Water Resources and Water Engineering
基金
国家"973"计划项目(2012CB417001)
水利部公益性行业科研专项经费项目(201101003)
关键词
森林流域
林冠截留
树干径流
水文效应
年径流量
forest watershed
canopy interception
stemflow
hydrological efficiency
annual runoff
