Study on Index of Groundwater Ecological Function Crisis Classification and Early Warning in Northwest China

The natural oases in the plain area of northwest inland basin strongly depend on groundwater depth. With overexploitation and utilization groundwater, are faced with problems serious degradation rehabilitation. How to evaluate degree degeneration crisis ecological function has become one key scientific technological be solved. In this paper, Shiyang River Gansu Province was selected as a typical research area. remote sensing interpretation, groundwater–soil ecology comprehensive investigation, situ monitoring were adopted carry out research. Based correlation analysis method interactive relationship between environment depth different types region studied: (1) under arid climate condition China, relationships situation obviously different, result, optimal or limit water level also different; (2) wetland area, suitable 0.5 m 1.5 m, 8.0 m; vegetation 3.0 5.0 10.0 farmland 2.0 (3) order effectively protect types, five-level early warning control index system should established for groundwater. It may beneficial promote restoration protection China.