摘要
为了向长江流域综合规划修编工作提供基础水文支撑资料,依据长江主要干支流水文站的实测资料,分析了长江流域的降雨径流时空分布规律,长江流域径流深的分布情况、干流主要控制站径流的组成、年际变化及丰枯特征、年内分配特征等。结果表明,长江流域年径流深地区分布及年内径流分配不均;支流径流年际变化大、干流变化小,常出现连续丰水年和连续枯水年的情况。长江流域径流时空分布特征应在流域综合规划修编时予以重视。
In order to provide basic hydrological support data for comprehensive planning revision of Yangtze River Basin, based on the measured data of main hydrological stations of main stem and tributaries of Yangtze River, the temporal and spatial distribution laws of precipitation and runoff are analyzed. The main analysis contents contain the distribution condition of runoff depth in the basin, runoff composition of main hydrological stations of the main stem, inter-annual variation of runoff and its characteristics in flood season and dry season, and annual distribution of runoff. The analysis results show that the regional distributions of annual runoff depth and the annual runoff are uneven; the inter-annual variation of runoff in tributaries is lager, but smaller in main stem, and consecutive wet years or dry years occur frequently in tributaries. These temporal and spatial distribution characteristics of runoff should be considered in the comprehensive planning revision of Yangtze River Basin.
出处
《人民长江》
北大核心
2013年第10期88-91,共4页
Yangtze River
基金
国家重点基础研究发展计划"973"项目(2012CB417001)
国家科技重大专项课题(2013ZX07503-001)
关键词
径流
地区分布
年际变化
年内分配
长江流域
runoff
regional distribution
inter-annual variation
annual distribution
Yangtze River Basin
