Annual salmon hatchery releases from the Hatchery Release Report Form, Alaska, 1952-2017

The data was taken from the Hatchery Release Report on the Alaska Department of Fish and Game website (https://mtalab.adfg.alaska.gov/CWT/reports/hatcheryrelease.aspx) on 04-04-2018. The data file HR002286.csv includes the annual salmon hatchery release data from 1952-2017 in Alaska. This dataset includes the total release count from different release agencies throughout the state. The file lists information about coded wire tag and Alaskan non-coded wire tag groups released since 1968. While there is information about non-Alaskan coded wire tag groups from the data, it is primarily intended for Alaskan Hatchery production release summaries. This dataset was generated by selecting all releases (including non-thermally marked), from all release agencies, species, and rearing codes, from the state of Alaska. The district_region_lut.csv file enables assignment of region for the State of Alaskan Salmon and People (SASAP) project to be assigned based on the district information. Hatchery_releases.csv is generated from HR002286.csv and district_region_lut.csv by the Rmd, which adds the SASAP region and district information, converts some codes (such as species codes) to more readable names, and makes some summary plots.本数据集的数据源自2018年4月4日从阿拉斯加州鱼类与狩猎部官网（https://mtalab.adfg.alaska.gov/CWT/reports/hatcheryrelease.aspx）获取的《孵化场放流报告》。数据文件HR002286.csv包含1952年至2017年阿拉斯加地区的年度鲑鱼孵化场放流数据，收录了全州各放流机构的总放流数量。该数据集涵盖了1968年以来放流的编码线标（Coded Wire Tag，CWT）组与阿拉斯加非编码线标组的相关信息。尽管数据中包含非阿拉斯加编码线标组的记录，但本数据集主要用于阿拉斯加孵化场生产放流汇总。本数据集通过筛选阿拉斯加州所有放流机构、物种及培育代码下的全部放流记录（包括未进行热标记的个体）生成。辅助文件district_region_lut.csv可基于区域信息，为阿拉斯加鲑鱼与人类项目（State of Alaskan Salmon and People，SASAP）分配对应区域。Hatchery_releases.csv由HR002286.csv与district_region_lut.csv通过Rmd脚本生成，补充了SASAP区域与行政区划信息，将部分代码（如物种代码）转换为更易读的命名，并生成了部分汇总图表。