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龙门水库和安各庄水库同属于白洋淀流域,且地理位置上相邻。按水库库容划分,都属于大(二)型水库,并且设计之初的水库功能都是以防洪为主,同时兼有灌溉、养殖等功能。本文运用1961年-2008年的水库径流数据,通过回归分析,发现两个水库上游来水量呈现逐年减少的趋势。虽然两个水库地理位置靠近,但是安各庄水库运行正常,而龙门水库近年来却几乎处在彻底干涸的处境。为了解释这种差异性,本文首先通过DEM提取了两个水库的集水区,然后从水库上游集水区的气候要素、地形要素、植被要素以及人类活动要素等影响因子着手,分析了这两个水库现状迥异的深层原因。分析结果显示:地形因素和人类活动因素是造成两个水库不同径流效应的主要原因。
Both Longmen Reservoir and Angezhuang Reservoir belong to Baiyangdian Lake Basin and are geographically adjacent to each other. Divided by the reservoir storage, all belong to the large (two) reservoir, and the design of the reservoir functions are mainly flood control, both irrigation and aquaculture functions. Based on the data of reservoir runoff from 1961 to 2008, regression analysis shows that the water inflow in the upper reaches of the two reservoirs tends to decrease year by year. Although the two reservoirs are geographically close, the Angezhuang Reservoir is operating normally, while the Longmen Reservoir has almost completely dried up in recent years. In order to explain this difference, this paper first extracted the catchment areas of two reservoirs by DEM, and then analyzed the influencing factors of climatic elements, topographical elements, vegetation elements and human activities elements in the catchment area upstream of the reservoir A reservoir of different deep-seated reasons. The analysis results show that the topographical factors and human activities are the main causes of different runoff effects in two reservoirs.