Invited Keynote Papers Water Saving is the Only Way for the Sustainable Development of Northwest China Key Issues in the Sustainable Water Resources Development in Arid Oasis Assessment of Oasis Maturity and Ecological Security in Hexi Corridor Groundwater Availability and Renewal in Inner Mongolia, China: the Minqin Basin and the Badain Jaran Some Strategic Countermeasures for the Sustainable Development of Water Resources in Northwest China Scenario Planning for Irrigation Futures of the Goulburn Broken Region, Australia Characteristics of the Water Cycle and Climate Development in the Arid Environments of the Shule River Basin Temporal and Spatial Characteristics of Droughts in the Wei River Basin Oasis-hydrosphere-desert Interaction RS-based Assessment on Ecosystem Rehabilitation of an Extremely Drought Inland Oasis Hydrological Modeling of the Surface Water in the Shule River Basin Application of Three Parameter Estimation Methods of Hydrologic Model: Uncertainty in the Parameter Calibration Groundwater Influences on Hydrological Cycle in the Nebraska Sand Hills, USA Sustainable Groundwater Use in Arid Regions Water Cycle Systems Modeling Defining Ecosystem Targets for Planning Environmental Sustainability and Assessing Water Development Impacts Distributed Modeling of Water Cycle System and River Flow Forecast in the Heihe Basin High Resolution Water & Energy Balance Modeling by Land Information System (LIS) in Hexi Region Water Balance of Forest and Grass Catchments and Sensitivity Analysis: A Case Study in Hilly Region of Red Soil Economic Impacts Evaluation of Institutional and Technological Changes in Yellow River Basin Management Numerical Simulation Methods for Modeling Stream and Aquifer Interaction Hydrological Process and Characteristics in the Arid Plain Oases A Continuous Simulation of Runoff in a Small Watershed of the Loess Plateau with a Distributed Model …… Development of Water Resources in the China North-West Inland Rivers and Impact Assessment Development of Water-Saving Technologies and Society Abstracts of Other Papers Full Chinese Papers