Blue Intensity (BI) is coming of age in dendrochronology, although some methodological challenges still need resolution. In the last 20 years, 59 papers have been published focussing mainly on climatological based studies, although BI has also been shown to be useful both for historical dating and dendroecological studies. This short paper briefly reviews the BI method development of the last two decades and introduces a new collaborative initiative called I-BIND (International Blue Intensity Network Development Working Group), which is supported by the Association of Tree-Ring Research. The main aims of I-BIND are to promote continued methodological development, communicate best practice via workshops, encourage the development of BI data networks to enhance both dendroclimatology and dendro-historical dating, and to create a rich environment in which innovative and novel initiatives can be explored and discussed.

蓝色强度 (BI) 在树木年代学中逐渐成熟，尽管仍然需要解决一些方法上的挑战。在过去的 20 年中，已经发表了 59 篇论文，主要侧重于基于气候学的研究，尽管 BI 也被证明对历史测年和树木生态学研究都很有用。这篇简短的论文简要回顾了过去二十年的 BI 方法开发，并介绍了一项名为 I-BIND（国际蓝色强度网络开发工作组）的新协作计划，该计划得到了年轮研究协会的支持。I-BIND 的主要目标是促进持续的方法学发展，通过研讨会交流最佳实践，鼓励 BI 数据网络的发展，以加强树木气候学和树木历史测年，