河北省水资源状况的降水条件分析

Precipitation Condition of Water Resource in Hebei Province

雨水是水资源的主要来源,也是影响水资源周期性变化的主要因素之一。水资源和气候降水有较强的正相关关系。选取河北省区域较均匀分布的39个代表站、45 a的月降水资料,对降水特征分区域做了初步分析。发现河北省近45 a降水具有总体减少的特性,期间发生过2次突然变干的过程,平原降水减少速率要远远高于山地。这种情况形成了河北省水资源的补给量不足,加剧了水资源紧张的状况,必须采取有效的措施高效利用水资源。

The rain water is one of the main origins of water resource and it is also one of the primary factors influencing periodic variation of water resource.There is obvious positive correlation between water resources and the climate precipitation.Based on monthly precipitation data during 1961-2005 from selected 39 stations in Hebei Province,the preliminary analysis is done about rainfall feature in different zone.Results show that precipitation decreased generally in the study region in 45 years,and the plain precipitation reduced faster than that of the mountainous areas,which aggravated the shortage of water resource in Hebei Province.The effective measures has to be adopt to use water resources efficaciously.