ITEX circumarctic CO2 flux survey data from Toolik, Alaska; Abisko, Sweden; Svalbard, Norway; Zackenberg, Northeast Greenland; Anaktuvuk River Burn, Alaska and Barrow, Alaska 2003-2009.

Ecosystem CO2 flux light response curves were measured on 1m x 1m plots across the arctic. This file contains the CO2 and H2O flux measurements and NDVI data for each plot. Survey plots were located in the Toolik Lake LTER fertilization experiment in Alaska; at Imnavait Creek, Alaska; at Paddus, Latnjajaure and the Stepps site near Abisko in northern Sweden; at various sites in Adventdalen, Svalbard; in the Zackenberg valley, Northeast Greenland; at BEO near Barrow, Alaska and at the Anaktuvuk River Burn in Alaska. Measurements were made during the growing seasons 2003 to 2009.

本数据集针对北极范围内的1米×1米样地测定了生态系统CO₂通量光响应曲线。本文件收录了各对应样地的CO₂、H₂O通量观测数据以及归一化植被指数（Normalized Difference Vegetation Index, NDVI）数据。本次调查样地分布如下：阿拉斯加州图利克湖长期生态研究（Long-Term Ecological Research, LTER）施肥实验样地、阿拉斯加州伊姆纳韦特溪样地、瑞典北部阿比斯库附近的帕杜斯（Paddus）、拉特纳约雷（Latnjajaure）与斯泰普斯（Stepps）样地、斯瓦尔巴群岛阿德文特谷（Adventdalen）的多个样点、格陵兰东北部扎肯贝格（Zackenberg）山谷样地、阿拉斯加州巴罗附近的BEO样地，以及阿拉斯加州安纳克图克河火灾区域样地。观测工作于2003年至2009年的生长季期间开展。