FOREWORD PREFACE Chapeter1 General Physical Environment 1.1 Topography 1.2 Climater 1.3 Vegetation and soil 1.4 Hydrogeologic conditions 1.5 River systems 1.6 Lakes 1.7 Glaciers Chapter 2 Temporal and Spacial Distribution of Main Hydrologyical Elements 2.1 Atmospheric moisture content andvapor transfer 2.2 Prectipitaion 2.3 Runoff 2.4 Evaporation Chapter 3 Surface Water Resources 3.1 Regionalization of surface water resources 3.2 Regional total annual precipitation 3.3 Regiona annual runoff 3.4 Variation of the ampleness and dryness of water resources and representativeness analysis 3.5 Annual runoff of main rivers 3.6 Water amount dischatging into seas and flowing out/in through national boundarics Chapter 4 Groundwater Resources Chapter 5 Gross Water Resources Chapter 6 Water Quality Chapter 7 Issues in China's Water Resources