Plant community composition in the Arctic System Science Program (ARCSS) grid at Barrow and Atqasuk, Alaska 2018

Arctic ecosystems are changing in response to arctic warming, which is proceeding more than twice as fast as the global average. The International Tundra Experiment (ITEX) was established in the early 1990s to understand the effects of warming and environmental variability on tundra vegetation properties and ecosystem function. The ITEX program has been extremely valuable for detection of changes in tundra plant and ecosystem responses to experimental warming and to background climate change across sites that span the major ecosystems of the Arctic These files contain data representing the plant community composition and structure of ARCSS grid plots at Barrow and Atqasuk in a text tab delimited format. The data were collected on a subset of 30 plots at Barrow and 30 plots at Atqasuk.

北极生态系统正随北极变暖发生改变，而北极变暖的速率是全球平均水平的两倍以上。国际冻原实验（International Tundra Experiment, ITEX）于20世纪90年代初启动，旨在探究增温和环境波动对冻原植被特征及生态系统功能的影响。该ITEX项目对于检测横跨北极主要生态系统的各监测站点中，冻原植物与生态系统对实验性增温和背景气候变化的响应变化具有极高科研价值。这些文件以制表符分隔的文本格式，存储了巴罗（Barrow）与阿塔苏克（Atqasuk）两地ARCSS网格样方的植物群落组成与结构数据。本次数据采集覆盖巴罗地区的30个样方以及阿塔苏克地区的30个样方，二者均为对应区域的样方子集。