Wang Yu-Wan, Ma An-Zhou, Chong Guo-Shuang, Xie Fei, Zhou Han-Chang, Liu Guo-Hua, Zhuang Guo-Qiang
Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
Sino-Danish College of University of Chinese Academy of Sciences, Beijing 101400, China.
Huan Jing Ke Xue. 2020 Jun 8;41(6):2918-2923. doi: 10.13227/j.hjkx.201911157.
Glaciers are constantly retreating because of global warming. In this study, three soil samples along the forefield of Urumqi Glacier No. 1 were collected. The effects of warming on the microbial community in the glacier forefield were investigated through a 150-day laboratory experiment. In this experiment, two temperature treatments were performed at 5℃and 15℃. The results showed that with increasing deglaciation age, the concentrations of carbon and nitrogen increased and the abundance and alpha diversity of microbial communities increased in the original samples. The 150-day laboratory experiment indicated that warming insignificantly changed the copy number of archaea and bacteria. Furthermore, it changed the microbial community composition, and the changes varied in different sampling sites. Based on the analysis of abundant OTUs changing significantly with warming, the sampling sites with shorter deglaciation age had stronger response with warming, representing an increase in the abundance of genus Furthermore, these results revealed that warming caused different effects on microbes along glacier forefield and thus, it could provide important characteristics of the microbial community with warming in alpine glacier regions.
由于全球变暖，冰川正在不断退缩。在本研究中，采集了乌鲁木齐一号冰川前缘沿线的三个土壤样本。通过一项为期150天的实验室实验，研究了变暖对冰川前缘微生物群落的影响。在该实验中，进行了5℃和15℃两种温度处理。结果表明，随着冰川消退年龄的增加，原始样本中碳和氮的浓度增加，微生物群落的丰度和α多样性增加。为期150天的实验室实验表明，变暖对古菌和细菌的拷贝数影响不显著。此外，它改变了微生物群落组成，且不同采样点的变化有所不同。基于对随变暖显著变化的丰富OTU的分析，冰川消退年龄较短的采样点对变暖的响应更强，表现为属丰度的增加。此外，这些结果表明，变暖对冰川前缘沿线的微生物产生了不同影响，因此，它可以提供高山冰川地区变暖时微生物群落的重要特征。
