水环境背景元素的时间差异变化规律

研究化学元素在枯、丰、平三个水季悬浮态、可溶态、沉积态的含量变化。以黄梨树水文站作为动态观测点，三年观测得出水化学要素、重金属元素及稀有、稀土元素变化最大的是丰水季；悬浮体相当于枯水季的２５０倍；悬浮态和可溶态元素含量（原水）同样形成丰水季＞平水季＞枯水季的趋势；而可溶态元素含量（过滤水）各个水期无大的变化差异。沉积物在三个水季中元素含量变化差异也较小，但有机质相反，含量出现枯水季＞平水季＞丰水季这样的规律。

Rule of Water Environment Background Element Change in Different Time.

In this thesis,we study the chemical element content change in suspension,solution and sediment state when in low,high and normal flow season.Taking huanglishu hydrological station as a dynamic observing point,in three years,our observation shows that the biggest changes of chemical element,heavy metal element,rare metal element and rare earth element are in high flow season:suspension is equal to 250 times of it in low flow season;just the same,total element content of solution and suspension state(i.e.original water)forms the trend of high flow season>normal flow season>low flow season.However,element content of solution state(i.e.filtrate water)haven't great change in each flow period.In the three flow seasons,element content of sediment has only a little change,on the contrary,element content of organic matters have the rule of low flow season>normal flow season>high flow season.