This book is a recent addition to an increasing number of books on coastal management produced since coastal zone management (CZM) legislation was first introduced to the United States in 1972. A detailed review of CZM in the scientific literature by Birch and Reyes (2018) reveals an initial focus on land use and legal issues, followed by significant increases in the volume of publications after major policy initiatives such as Agenda 21. Thus, Birch and Reyes observed a notable shift from the use of “coastal zone management” to “integrated coastal management” (ICM) and conclude that there is now a focus on systems perspectives, cross‐boundary management strategies, and consideration of both marine and terrestrial environments.

In addition to the thousands of journal articles on coastal management, there are many books on coastal management including scientific monographs, technical manuals, academic texts, and edited works. A basic web search for books on coastal management generates a list of around 50 books, 20 of which have been produced since the turn of the century, making an average of one per year. So why so many books on coastal management and where does this new book by Krishnamurthy et al. fit in?

First, it is useful to note that the focus of books on CZM varies considerably. Some specify a clear regional management focus in titles such as Australia, the Euro‐Mediterranean, or Southeast Asia and the Pacific. Others are conference proceedings or edited books such as those published by Wiley in 2009 and 2012 comprising chapters arising from the international symposia on ICM held in Norway. The Norwegian conferences are different from the annual International Coastal Symposium, held in varied locations around the world, which has a broader coastal scientific focus with proceedings published in the Journal of Coastal Research. Titles are often qualified by terms such as “sustainable” or “integrated” coastal (zone) management, “global change”, “climate change” and coastal management, and “marine and coastal resource management”. Numerous books target the student text market.

It is interesting that two of the most recently edited coastal management books by Krishnamurthy et al. (2019) and Ramkumar et al. (2018) are both published by Elsevier and in each most contributors are based in India. For example, the book by Ramkumar et al. has four editors and 83 contributors—almost half based at Indian institutions. The book by Krishnamurthy et al. has four editors and 68 contributors—with over a third based in Indian institutions. Notwithstanding the fact that both books have ‘global perspectives’ or ‘global challenges and innovations’ in the titles, both also draw heavily on Indian studies and examples. Given the fact that these books are published by Elsevier at about the same time suggests a market demand for this material.

The book by Krishnamurthy et al. is promoted as ‘a perfect knowledge source and tool for researchers, field practitioners, planners, and policy‐makers’. It purports to draw from a global pool of authors in order to present appropriate tools in coastal management with innovative approaches to community participation and bottom‐up approaches. In his editorial note at the start of the book, Krishnamurthy notes that his collaborators in India, Germany, and Mexico received contributions from around the world to compile a reference book based on case study experience (p.xxii).

It is not clear to what extent the editors have selected, edited, or provided a framework for the various contributions. Neither the foreword nor the editorial note at the start of the book provides an overview or a structure for what follows, and there is no introduction to the 21 chapters, which do not appear to be structured by any themes. There is also considerable variation in chapter length and style. For example, the text for chapter 1 is just over three pages long and has no reference list. In contrast, the references and further reading lists in each of chapters 11 and 16 are twice as long as the whole of chapter 1.

It would be useful if the editors had taken a closer role in editing some of the chapters to produce a synthesis and consistency. An introductory chapter would have helped to provide some basic material and conceptual framework to avoid repetition in later chapters. In addition, there is inconsistency between chapters on basic information. For example, there are differences in how much of the world's population currently live within 100 km of the coast. Chapter 1 gives a figure (p.1) of ‘more than 45%’; chapter 3 states (p.23) that it is ‘40%’; chapter 6 states (p.29) that it is ‘nearly half the global population’; whereas chapter 5 states (p.61) that ‘roughly two‐thirds of the human population live, work, and produce on coasts’. They cannot all be right.

The book comprises 21 chapters. Chapter 1 is a very short commentary and inconsistent with the style of other chapters. Chapters 2 to 6 and chapter 8 provide case studies related to aspects of coastal management. Three of these (3, 4, and 6) are from Mexico and focus on coastal development, governance of the nautical sector (in Oaxaco), and tourist beaches (in Oaxaco and Guerrero). Chapter 3 includes a definition of what the authors mean by ‘the coast’ and ‘coastal development’; such definitions could usefully have been discussed in an introductory chapter. Chapter 2, from Sri Lanka, uses a case study approach to consider special coastal areas management; chapter 5, from Indonesia, uses a typology approach to consider the social‐ecology of CZM; and chapter 8, from South Africa, provides a case study of coastal management issues on the KwaZulu‐Natal coast.

Chapter 7 and chapters 9 to 17 then move away from management approaches to provide either case studies or detailed reviews of biophysical coastal processes. For example, a land use change case study on a 74 kilometre stretch of coast in East Malaysia is presented in chapter 7 to evaluate decadal coastal changes. Similarly, a specific beach study from Mexico is used in chapter 9 to examine erosion processes, problems, and potential solutions. In contrast, chapter 10 describes a detailed technique and modelling study designed to reduce waterlogging processes in southwestern Bangladesh. The book then has a comprehensive 50‐page review in chapter 11 of India's coastal and marine biodiversity. Chapter 12 returns to using a case study approach with an analysis of salinity problems and its management in the Indian Sundarban Delta, an area of nearly 10,000 square kilometres.

The next two chapters examine the use of mangroves and seagrass in climate change mitigation. Chapter 13 presents case studies from two community‐managed mangrove projects in the Philippines as a backdrop to a discussion on the importance of mangrove conservation and some of the management challenges. Chapter 14 gives a more general review of seagrasses in India and discusses their carbon sequestration potential and management.

Further Indian coastal case studies on different themes are presented in chapters 15 to 17. Chapter 15 discusses the potential use of open source‐based WebGIS for mangrove management in India; this is followed by a detailed 60‐page review of ecological studies from the Kalpakkam coast, Bay of Bengal in chapter 16. Chapter 17 gives a general overview of seawater interface impacts on coastal groundwater before providing two very short Indian case studies.

The next three chapters have a broad focus on coastal disaster management. Chapter 18 examines tsunami evacuation planning in Indonesia, with reference to examples and disaster planning strategies. In contrast, chapter 19 is a detailed numerical oceanographic modelling study related to the effects of the Great East Japan earthquake. This work is followed by another Indian case study using the Vishakhaptnam coast to examine management approaches for potential coastal oil spills.

The final chapter 21 is somewhat different from other chapters in that it provides a practical, well‐illustrated review for using low‐cost UAVs for coastal monitoring, mapping, and modelling. This chapter falls into the category of recent technological innovations in coastal management.

At the end of the book, in a short section called ‘The Way Forward’, three of the four editors—Krishnamurthy, Jonathan, and Glaeser—attempt to draw together some concluding comments from the other chapters. They pose five challenges: (1) equitable access to coastal resources and coastal governance; (2) mitigating coastal hazards and disaster reduction; (3) enhancing the resilience of vulnerable communities; (4) integrating indigenous knowledge with technological applications; and (5) training and capacity building in integrated coastal zone management (ICZM), including higher education in coastal management. While these are important challenges, the link between these and a synthesis of global case studies presented in the book does not come across strongly.

In conclusion, this book touches on some global challenges and innovations in coastal management but could be better structured and edited. There is significant contrast in the quality, length, and scholarship among the various chapters. However, there are some useful scientific reviews and case studies using modern technological applications. The value of this book has to be assessed against many other books on coastal management published in the last two decades. In this context, it has an appealing title which promises more than it delivers.

自1972年沿海地区管理（CZM）立法首次引入美国以来，这本书是对海岸管理书籍数量的最新增加。Birch和Reyes（2018）在科学文献中对CZM进行了详细回顾。揭示了最初对土地使用和法律问题的关注，随后在诸如《 21世纪议程》等重大政策措施出台后，出版物数量大幅度增加。因此，伯奇和雷耶斯（Birch and Reyes）观察到从使用“沿海地区管理”到“综合沿海管理”（ICM）的显着转变，并得出结论，现在重点关注系统的观点，跨界管理策略以及对这两个方面的考虑和陆地环境。

除了关于海岸管理的数千篇期刊文章外，还有许多关于海岸管理的书籍，包括科学专着，技术手册，学术著作和编辑著作。对沿海管理书籍的基本网络搜索会生成一本约50本书的清单，其中自世纪之交以来已生产了20本书，平均每年一本。那么，为什么有那么多关于沿海管理的书？克里希那穆提等人的这本新书在哪里呢？适合？

首先，值得注意的是，关于CZM的书籍的重点差异很大。有些人指定了明确的区域管理重点，例如澳大利亚，欧洲地中海或东南亚和太平洋地区。其他的则是会议论文集或编辑过的书，例如Wiley在2009年和2012年出版的书，其中包括因在挪威举行的ICM国际研讨会而产生的章节。挪威会议不同于在世界各地举办的年度国际沿海专题讨论会，该专题讨论会更广泛地关注沿海科学，其论文集发表在《沿海研究》上。标题通常用诸如“可持续”或“综合”的海岸（区域）管理，“全球变化”，“气候变化”和海岸管理以及“海洋和海岸资源管理”之类的术语来限定。针对学生文本市场的书籍很多。

有趣的是，克里希那穆提（Krishnamurthy）等人最近编辑了两本沿海管理书籍。（2019）和Ramkumar等。（2018）都是由爱思唯尔（Elsevier）出版，并且每个贡献者都来自印度。例如，Ramkumar等人的书。有四位编辑和83位撰稿人-几乎一半来自印度机构。克里希那穆提（Krishnamurthy）等人的书。拥有四位编辑和68位撰稿人，其中三分之一以上驻印度机构。尽管这两本书的书名都具有“全球视角”或“全球挑战与创新”，但它们也都大量借鉴了印度的研究和实例。考虑到这些书是由爱思唯尔（Elsevier）几乎同时出版的，这表明对该材料的市场需求。

克里希那穆提（Krishnamurthy）等人的书。被推广为“研究人员，现场从业人员，规划人员和政策制定者的理想知识来源和工具”。它旨在从全球的作者库中汲取资源，以提出具有创新性的社区参与方法和自下而上方法的沿海管理工具。克里希那穆提（Krishnamurthy）在本书开头的编辑说明中指出，他在印度，德国和墨西哥的合作者从世界各地获得了贡献，根据案例研究经验汇编了参考书（第xxii页）。

目前尚不清楚编辑人员在多大程度上选择，编辑或提供了各种文稿的框架。本书开头的前言和社论注释都没有提供后续内容的概述或结构，也没有对这21章的介绍，这些21章似乎没有任何主题构成。章节长度和样式也存在很大差异。例如，第1章的文字刚好超过三页，并且没有参考列表。相反，第11章和第16章中的参考文献和进一步阅读清单是第1章全文的两倍。

如果编辑人员在编辑某些章节中发挥更密切的作用以产生综合性和一致性，这将很有用。简介性章节将有助于提供一些基本的材料和概念框架，以避免在后续章节中重复。此外，基本信息各章之间也存在不一致之处。例如，目前世界上有多少人口生活在距离海岸100公里以内的地区。第1章给出的数字（第1页）为“ 45％以上”；第三章指出（第23页）为“ 40％”；第6章指出（第29页），它“接近全球人口的一半”；而第5章指出（第61页），“大约三分之二的人口在沿海地区生活，工作和生产”。他们不可能都是正确的。

该书共21章。第1章的评论很短，与其他各章的风格不符。第2至6章和第8章提供了与海岸管理方面有关的案例研究。其中三个（3、4和6）来自墨西哥，重点关注沿海发展，航海部门的治理（在瓦哈科）和旅游海滩（在瓦哈科和格雷罗）。第三章定义了作者的“海岸”和“沿海发展”的含义。这样的定义可能在介绍性章节中有用地讨论过。斯里兰卡的第二章使用案例研究的方法来考虑特殊沿海地区的管理；印度尼西亚的第5章使用类型学方法来考虑CZM的社会生态学；还有来自南非的第8章，

然后，第7章和第9至17章不再采用管理方法，而是提供案例研究或对生物物理沿海过程的详细评论。例如，第7章介绍了东马74公里海岸的土地利用变化案例研究，以评估十年来的沿海变化。同样，第9章使用了来自墨西哥的特定海滩研究来检查侵蚀过程，问题和可能的解决方案。相反，第10章介绍了旨在减少孟加拉国西南部涝灾过程的详细技术和模型研究。然后，在印度的沿海和海洋生物多样性的第11章中，该书进行了50页的全面回顾。第12章返回案例研究方法，分析印度Sundarban三角洲的盐度问题及其管理，

The next two chapters examine the use of mangroves and seagrass in climate change mitigation. Chapter 13 presents case studies from two community‐managed mangrove projects in the Philippines as a backdrop to a discussion on the importance of mangrove conservation and some of the management challenges. Chapter 14 gives a more general review of seagrasses in India and discusses their carbon sequestration potential and management.

Further Indian coastal case studies on different themes are presented in chapters 15 to 17. Chapter 15 discusses the potential use of open source‐based WebGIS for mangrove management in India; this is followed by a detailed 60‐page review of ecological studies from the Kalpakkam coast, Bay of Bengal in chapter 16. Chapter 17 gives a general overview of seawater interface impacts on coastal groundwater before providing two very short Indian case studies.

接下来的三章将重点放在沿海灾难管理上。第18章参考示例和灾难计划策略，研究了印度尼西亚的海啸避难计划。相比之下，第19章是与东日本大地震的影响有关的详细的海洋学数值模拟研究。这项工作之后是另一个印度案例研究，该案例使用Vishakhaptnam海岸研究了潜在沿海溢油的管理方法。

第21章与其他各章有所不同，它为使用低成本无人机进行海岸监测，制图和建模提供了实用且说明充分的回顾。本章属于沿海管理领域的最新技术创新。

在本书的最后，在一个名为“前进之路”的小节中，四个编辑中的三个（克里希那穆提，乔纳森和格莱泽）试图将其他各章的结论性意见汇总在一起。它们构成了五个挑战：（1）公平获得沿海资源和沿海治理；（2）减轻沿海灾害和减少灾害；（3）增强脆弱社区的复原力；（4）将土著知识与技术应用相结合；（5）沿海综合管理（ICZM）的培训和能力建设，包括沿海管理的高等教育。尽管这些都是重要的挑战，但这些与本书中介绍的全球案例研究的综合之间的联系并没有很明显。

总之，本书涉及沿海管理方面的一些全球性挑战和创新，但可以进行更好的组织和编辑。各章之间在质量，篇幅和学术性方面存在明显的对比。但是，有一些有用的科学评论和使用现代技术应用的案例研究。这本书的价值必须与最近二十年来出版的许多其他沿海管理书籍进行评估。在这种情况下，它有一个吸引人的标题，它的承诺远不止于交付。