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.

北极生态系统正响应北极变暖发生变化，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，旨在探明变暖与环境波动对冻原植被特性及生态系统功能的影响。该ITEX计划对于在覆盖北极主要生态系统的多监测站点中，检测冻原植物与生态系统对实验性变暖及背景气候变化的响应变化，具有极高的科研价值。本批文件以制表符分隔文本格式存储了巴罗（Barrow）与阿特萨苏克（Atqasuk）地区ARCSS样地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个样地与阿特萨苏克地区的30个样地。