Hao Ya Qun, Xie Lin, Chen Yueh Min, Tang Cai di, Liu Xiao Fei, Lin Wei Sheng, Xiong De Cheng, Yang Yu Sheng
School of Geographical Sciences, Fujian Normal University, Fuzhou 350007, China.
Statef Key Laboratory of Humid Subtropical Mountain Ecology, Fuzhou 350007, China.
Ying Yong Sheng Tai Xue Bao. 2018 Jan;29(1):53-58. doi: 10.13287/j.1001-9332.201801.034.
The increasing rate of atmospheric nitrogen (N) deposition has become the focus of research attention. Soil bacterial community plays an important role in soil nutrient cycling. We stimulated N deposition at the Forest Ecosystem of Fujian Normal University and Global Change Research Station in Chenda Town, Sanming City in the Fujian Province of China. We examined the effect of N deposition on the structure and composition of soil bacterial community using 16S rDNA amplification sequencing. The results showed that short-term addition of N had no significant effect on the soil bacterial diversity and composition, but high N treatment significantly affected therelative abundance of individual bacterial species, which increased the abundance of Copiotrophic group and decreased that of the corresponding Oligotrophic group, indicating that changes in soil bacterial nutrient strategies were driven by the availability of nutrients. Enhanced understanding of the responses of soil bacterial community and nutrient distribution pattern to rapid N deposition could improve the prediction ability about the future environment.
大气氮（N）沉降速率的增加已成为研究关注的焦点。土壤细菌群落在土壤养分循环中起着重要作用。我们在中国福建省三明市陈大镇福建师范大学森林生态系统与全球变化研究站进行了氮沉降模拟实验。我们使用16S rDNA扩增测序研究了氮沉降对土壤细菌群落结构和组成的影响。结果表明，短期添加氮对土壤细菌多样性和组成没有显著影响，但高氮处理显著影响了个别细菌物种的相对丰度，增加了富营养型菌群的丰度，降低了相应贫营养型菌群的丰度，这表明土壤细菌养分策略的变化是由养分有效性驱动的。加强对土壤细菌群落和养分分布模式对快速氮沉降响应的理解，可以提高对未来环境的预测能力。
