目前,确定地下水污染起始值的方法较多,它们大部分建立在背景值计算的基础上。然而,我国的大部分地区,在人类活动的长期影响下,自然环境体系已不复存在,各种环境要素如大气、土壤、地表水、地下水等已几经污染,所以,真正的背景值已难以确定,而计算出的背景值实质上已是污染起始值了。另外,人们常将计算出的某一背景值或污染起始值做为某一地区的背景值或污染起始值,即整个地区背景值或污染起始值到处一样,这显然也是不恰当的。众所周知,地下水在地壳中运移时,常要受到诸如水文地质条件, At present, there are many ways to determine the initial value of groundwater pollution, and most of them are based on the calculation of background value. However, in most parts of our country, under the long-term influence of human activities, the natural environment system no longer exists. Various environmental elements such as the atmosphere, soil, surface water and groundwater have been polluted so that the true background value has become very difficult OK, and the calculated background value is essentially the starting value of the pollution. In addition, it is often inappropriate to use a calculated background value or starting value of pollution as the background value or starting value of pollution in a certain area, that is, the entire area background value or the starting value of pollution is everywhere . As we all know, groundwater in the crust in the migration, often subject to such as hydrogeological conditions,