McMurdo Dry Valleys Soil Biotic Effects Experiment

Increases in soil temperature and moisture may change the bioavailability of essential elements by altering solubility and diffusion rates in soils, or by changing the amounts of organic compounds. Long-term experiments in the Bonney, Hoare and Fryxell basins have been established with 3 treatments: 1) increased moisture, 2) soil warming (ITEX chambers), and 3) soil warming + increased moisture. The identification and abundance of soil biota are reported.土壤温度与湿度的升高，可通过改变土壤中必需元素的溶解度与扩散速率，或是调节有机化合物的含量，进而影响该类元素的生物有效性。本研究在邦尼（Bonney）、霍尔（Hoare）与弗莱克塞尔（Fryxell）盆地设立了长期定位实验，共设置3种处理方式：1）增湿处理，2）土壤增温（采用ITEX样箱），3）土壤增温与增湿联合处理。本数据集报告了土壤生物群落的物种鉴定结果及其丰度信息。