Contents Preface Acknowledgement Chapter 1 Introduction 1 Chapter 2 Diversity of Forest Ecosystem 9 2.1 Types and distribution of forest ecosystem 9 2.2 Structures and services of forest ecosystem 13 2.3 Achievements of major national forestry programs 15 2.4 Experience and main problems in biodiversity conservation 18 References 21 Chapter 3 Diversity of Shrub Ecosystem 24 3.1 Types and distribution 24 3.2 Plant community characteristics and carbon sink service 28 3.3 Stability assessment and management countermeasures 33 References 37 Chapter 4 Diversity of Grassland Ecosystem 40 4.1 Regional distribution and characteristics 41 4.2 Assessment of current status of ecosystem diversity 54 4.3 Dynamic change of grassland ecosystem 57 4.4 Protection status, existing problems and challenges 61 4.5 Countermeasures for biodiversity protection of grassland 76 References 80 Chapter 5 Diversity of Desert Ecosystem 82 5.1 Types and distribution of desert ecosystem 82 5.2 Structure and function of desert ecosystem 90 5.3 Characteristics of biodiversity in desert ecosystem 92 5.4 Diversity assessment of desert ecosystem 98 5.5 Driving force of loss of diversity of desert ecosystem 100 5.6 Protection countermeasures of diversity of desert ecosystem 102 References 105 Chapter 6 Diversity of Farmland Ecosystem 107 6.1 Types and distribution of farmland ecosystem 107 6.2 Services of farmland ecosystem 109 6.3 Diversity of farmland ecosystem 112 6.4 Influence factors and protection of diversity of farmland ecosystem 116 References 126 Chapter 7 Diversity of Urban Ecosystem 130 7.1 Types and distribution of urban ecosystem 130 7.2 Pattern of urban ecosystem and its evolution 132 7.3 Assessment on current situation of urban biodiversity 135 7.4 Conclusion and prospect 148 References 149 Chapter 8 Diversity of Freshwater Wetland Ecosystem 158 8.1 Current situation, distribution and patterns of freshwater wetland resources 158 8.2 Management of freshwater wetland ecosystem 160 8.3 Threats and future challenges 162 8.4 Management countermeasures and measures for freshwater wetland ecosystem 162 References 166 Chapter 9 Diversity of Marine Ecosystem 167 9.1 Estuary ecosystem 167 9.2 Bay ecosystem 168 9.4 Upwelling ecosystem 170 9.5 Deep sea ecosystem 171 9.6 Mangrove ecosystem 171 9.7 Coral reef ecosystem 174 9.8 Coastal wetland ecosystem 177 9.9 Seagrass beds ecosystem 178 References 182 Chapter 10 Diversity of Island Ecosystem 184 10.1 Features of island ecosystem 184 10.2 Types of island ecosystems 185 10.3 Distribution of island ecosystem 188 10.4 Area and form of island ecosystem 189 10.5 Biodiversity of island 191 10.6 Current situation of island biodiversity conservation 192 10.7 Threats to biodiversity of island 194 References 197