Indicative distribution map for Ecosystem Functional Group M3.7 Chemosynthetic-based-ecosystems (CBE)

This archive contains indicative distribution maps and profiles for <strong>M3.7 Chemosynthetic-based-ecosystems (CBE)</strong>, a ecosystem functional group (EFG, level 3) of the IUCN Global Ecosystem Typology (v2.0). Please refer to Keith <em>et al.</em> (2020) for details. The descriptive profiles provide brief summaries of key ecological traits and processes, maps are indicative of global distribution patterns, and are not intended to represent fine-scale patterns. The maps show areas of the world containing major (value of 1, coloured red) or minor occurrences (value of 2, coloured yellow) of each ecosystem functional group. Minor occurrences are areas where an ecosystem functional group is scattered in patches within matrices of other ecosystem functional groups or where they occur in substantial areas, but only within a segment of a larger region. Given bounds of resolution and accuracy of source data, the maps should be used to query which EFG are likely to occur within areas, rather than which occur at particular point locations. Detailed methods and references for the maps are included in the profile (xml format).本归档包含<strong>M3.7化能合成生态系统（Chemosynthetic-based-ecosystems, CBE）</strong>的示意性分布地图与描述性概况文档，该系统是世界自然保护联盟（IUCN）全球生态系统分类体系（v2.0）的3级生态系统功能群（Ecosystem Functional Group, EFG）。详细信息请参阅Keith <em>等人</em>（2020）的研究成果。描述性概况文档简要总结了该类生态系统的关键生态特征与生态过程；地图仅用于示意全球分布格局，而非精细尺度的分布情况。地图标注了全球范围内各生态系统功能群的主要分布区（数值为1，以红色标注）与次要分布区（数值为2，以黄色标注）。次要分布区指生态系统功能群以斑块形式零散分布于其他生态系统功能群构成的基质生境中，或是仅在大区域的局部区段内形成大规模分布的区域。鉴于源数据在分辨率与精度上存在局限，本地图仅可用于查询某一区域内可能存在的生态系统功能群，而非特定点位的实际分布情况。地图的详细制作方法与参考文献均收录于该概况文档（XML格式）。