关于大长山岛水源估算及分析方法的研究

海岛由于条件所限和各方面原因,一般无径流观测资料,这样就给岛屿的水资源的评价、开发及水平衡分析带来了许多困难。本文以辽东半岛登沙河小面积站及黄海之中的大长山岛在水资源分析估算中的实例,说明了根据自然地理相似类比的原则,海岛完全可以移用大陆沿海自然地理相似区域所模拟建立的降水径流模型,并在模型诸影响因素中,直接考察具有相对稳定性和地区分布规律特征的陆面蒸发,以提高精度,从而为海岛水资源估算和水平衡分析提供一种可以借鉴的分析方法。

Study on Water Resources Estimation and Its Analysis Method of Dachangshan Island

There are usually no runoff observed data but precipitation and evaporation observations on the island studied,thus it causes a lot of difficulties to the analysis of water balance,and the assessment and development of water resources. This paper takes analrsis and calculation of water resources in both Dengsha stream basin in tne East Liaoning peninsula and Dachangshan island in the North yellow Sea for example to describe how the precipitation runoff model developed in the basin with the similar physiographic conditions in the coast of continent can be tran-sfered to the island nearby,on the principle of physiographic analogy To improve accuracy,landevaporation with a relative stability and systematic characteristics of regional distribution may be directly taken into consideration in the model.Therefors it might be possible to provide an analysis method which can be drawn from certain experience of the paper for water resources estimation and analysis oi; water balance on the island.