唐山市水资源总量变化趋势研究

Total Water Resources Trend of Tangshan

为科学规划和利用水资源，依据河北省唐山市主要河流降水、径流长系列资料，运用统计、回归分析、时间序列分析、灰色系统、神经网络等方法，对影响唐山市水资源的降水、蒸发、河川径流等主要因素进行分析，发现唐山市水资源总量年际间波动值较大，且呈现衰减趋势。

For scientific planning and utilization of water resources in Tangshan, according to the long series data of main rivers precipitation and runoff, by using statistical, regression analysis, time series analysis, gray system, neural network method, the major influencing factors on water resources in Tangshan such as precipitation, evaporation, runoff were analyzed, the result found that the total water resources in Tangs-han City showed large fluctuations between years with downtrend.