Climatic change to Chinese northwest area mountainous area thaw runoffinfluence Heihe basin land desert present situation and developmentcondition trend analysis Gansu Corridor ground water resources change synopsis hydrologygeology Engineering geology The Gansu Province Gansu Corridor plain ground water may pickthe quantity to discuss the Gansu water conservation water andElectricity technology Gansu Province Gansu Corridor water quality present situationanalysis meteorology hydrology sea instrument Wuwei city environmental protection bureau Wuwei areaenvironment quality report