Season and interval of burning and cattle exclusion in the southern Blue Mountains, Oregon: Understory vegetation attributes

These data document understory vegetation cover, richness and regeneration tree counts for a prescribed burning study with unburned controls on the Malheur National Forest in the southern Blue Mountains of Oregon. The original prescribed fires were conducted in the fall of 1997 and spring of 1998 and were repeated at two intervals, five and fifteen years. Five year interval reburns have been repeated three times (four burns total) and the fifteen year interval a single time (two burns total). Data include vegetation conditions prior to and following the last reburns and include understory vegetation cover; graminoid (grass and sedge) cover as well as leafing and flowering culm height, and flowering culm count data; shrub cover; conifer regeneration count data; presence/absence of all vascular species; and plant functional group information, descriptions and associated species.Understory vegetation data were collected to examine the impact of: (1) season of burn (fall, spring and no burning) at two intervals (5 and 15 years), and (2) season of burn (fall, spring and control), 5-year interval reburning and cattle grazing.Original metadata date was 08/28/2017. On 05/04/2021 minor metadata updates were made to keywords.

本数据集记录了位于俄勒冈州南部蓝色山脉马卢尔国家森林内，针对规定性燃烧研究的不燃烧对照组的林下植被覆盖率、物种丰富度和再生树木计数。原始的规定性火灾于1997年秋季和1998年春季实施，并在两个时间间隔（五年和十五年）后重复进行。五年间隔的复燃进行了三次（总计四次燃烧），而十五年间隔则仅进行了一次（总计两次燃烧）。数据包括最后一次复燃前后的植被状况，涵盖林下植被覆盖率；禾本科（草和苔草）覆盖率以及叶状和开花茎的高度及开花茎数量数据；灌木覆盖率；针叶树再生计数数据；所有维管植物的呈现与否；以及植物功能群的信息、描述和相关物种。林下植被数据的收集旨在检验以下影响：（1）燃烧季节（秋季、春季及未燃烧）在两个时间间隔（五年和十五年）下的影响，以及（2）燃烧季节（秋季、春季和控制组）、五年间隔的复燃和牛群放牧的影响。原始元数据日期为2017年8月28日。至2021年5月4日，对关键词进行了少量元数据更新。