湖泊成因 meaning in English

lake origin

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
以水文地质学、水文地球化学、地质学、同位素地球化学的理论为依据，并结合非线性回归数学方法，对九寨沟湖泊成因和动态进行分析研究，得出如下结论： 1