目录 ..22 ..23 ..24 26 ..26 ..29 ..3 1 ..32 35 ..35 ..38 ..41 第四章讨论 46 46 47 48 ..48 一49 49 第五章结论和展望 5 l 5 l 52 参考文献 53 附录 63 攻读硕士学位期间发表的论文及参与的科研项目 74 致谢 75 万方数据 Contents Contents Abstract(in Chinese) ··I Abstract(in English) ..III Chapter 1 Preface 1 Mangrove 1 Relations between mangrove and macrobenthos 1 Macrobenthos .1 Mangrove and Macrobenthos .2 Relations between mangrove and mollusks ..4 Mollusks in mangrove areas .. .4 Functions of mollusks in mangrove ecosystem .5 Relations between mangrove habitat heterogeneity and mollusks ..6 Research work on mollusks in mangrove areas 8 Purpose and significance ofthis study .9 Chapter 2 Material and methods .1 1 Study area ..1 1 Research methods .1 1 Sample setting 1 1 Research work on mollusks 1 3 Data analysis 14 Biodiversity index 14 Species similarity analysis ..14 Dominant species analysis ..1 5 Chapter 3 Results and Analysis 1 7 ponents and dominant species of mollusks at Dongzhaigang Bay ..1 7 structure of mollusks at different sample sites at Dongzhaigang Bay .1 9 万方数据 Contents Changes munity structure of mollusks at different sample sites 1 9 of the biodiversity index of mollusks at different sample sites . . . .22 Seasonal changes of biodiversity index of mollusks at different sample sites............................ . .................................................... ..........23