Vegetation monitoring in the Harvey Monroe Hall Research Natural Area: 1993 baseline data

This data publication contains tree and plant inventories for 27 transects within 9 vegetation community types in the Harvey Monroe Hall Research Natural Area (HMHRNA), located in the Inyo National Forest in California. Data were collected in the summer of 1993. Also included in this package are photographs of the transect starting points, end points and an overview of each transect.The HMHRNA, adjacent to Yosemite National Park's eastern boundary north of Tioga Pass, contains 3,883 acres of relatively undisturbed sub alpine and alpine habitats, including alpine meadows and sub alpine forest, the target ecosystems for which the region was designated. The object of the present vegetation monitoring effort was to establish baseline data on location, as well as species composition and frequency, of different vegetation communities within the RNA, in order to be able to investigate vegetation changes over time, due to direct human impacts or large-scale perturbations such as climate change.本数据集收录了位于美国加利福尼亚州因约国家森林内的哈维·门罗·霍尔研究自然保护区（Harvey Monroe Hall Research Natural Area，简称HMHRNA）中9种植被群落类型下27条样带的树木与植物清查数据。数据采集于1993年夏季。本数据包同时包含各条样带的起点、终点照片以及单条样带的整体概览照片。该保护区毗邻优胜美地国家公园提奥加山口以北的东部边界，总面积达3883英亩，拥有相对未受干扰的亚高山与高山生境，涵盖高山草甸与亚高山森林——这正是该保护区设立时所针对的目标生态系统。本次植被监测工作的目标是建立该保护区内不同植被群落的空间位置、物种组成与物种频度的基线数据，以便后续研究由人类直接活动或气候变化等大规模扰动所引发的植被长期变化。