Jiuzhaigou Lakes Causes And Dynamic Characteristics Of Study

According to the theory of hydrology , hydro-chemical and hydrology ,geology and isotopic geo-chemical , and the method of non-linear regression mathematics , the author researched and analyzed the cause of formation and variable features of lakes in Jiuzhai Valley ,then draw the conclusions as follow 1. The author presume the original physiognomy of Jiuzhai Valley ,and acknowledged Changhai Valley was a surface-water with uniform waterpower , the Rize Valley was a branch of it But the inequality rise of lithosphere, the deposit of earthquake landslides debris flows and falling or glacier blocked the river-way ,furthermore , the flow water with high content of Ca(HCO3)2 , so tufa dyke formed and evolvement the present dyke of lakes The present physiognomy formed on the base of those 2. The author validate that precipitation is the source of Juzhai Valley by using of isotopic . Changhai in the recharge area receives the precipitation and thawing water , which drains along the rupture towards Rize valley and Jiuzhai Valley So Changhai has the important effect on the whole area ?3. By analyses the qualitative features of contents and the factors varying the contents , which establish groundwork for the further research4. Though the nature environment has the important effect on lakes formation , human activity also play a quite role In late years ,human activity had accelerated to breach lake ,so the author analyses four major problems , and bring forward correspond suggestions...