CONTENTS Preface v List of Figures xi List of Tables xv 1Introduction 1 2 Geographical Background 20 3 Factors Controlling Wetlands 95 4 Theoretical Background 105 5 Distribution of Wetlands 130 6 Types and Patterns of Wetlands 144 7 Economic Gains from Wetlands 167 8 The Value of Wetlands 189 9 Endangered Wetland Ecology 224 10 Soil and Water of Wetlands 251 11Eutrophication of Wetlands 278 12 Wetlands and Agriculture 300 13 Ecologic?! Diversities of KabarTal 310 14 Productivity of Wetlands . 323 15 Sample Studies 338 16 Conservation of Wetlands 435 17 Problems and Planning of Wetlands 451 18 The Nature of Wetland Data Analysis 476 19 The Details of Data to be Collected 480 20 All India Questionnaire for the Survey of Wetlands 484 21 Conclusions 495 Bibliography 500 Index 518