School of Resources and Environment, Northeast Agricultural University, Harbin, 150030, PR China.
School of Resources and Environment, Northeast Agricultural University, Harbin, 150030, PR China.
Ecotoxicol Environ Saf. 2019 Aug 15;177:93-99. doi: 10.1016/j.ecoenv.2019.03.114. Epub 2019 Apr 8.
In order to better understand the composition and driving factors of the bacterial community in Mollisols, we selected 9 representative facility agricultural lands in Mollisol area of China for sampling, and described it on a larger spatial scale. Soil bacterial community structure in these 9 regions (determined by high-throughput sequencing analysis) showed significant differences at the genus level. The correlation between bacterial community composition and soil properties, contaminants and geographical latitude showed that the diversity of bacterial community was still strongly correlated with pH and SOM under the influence of phthalates (P < 0.05). Principal component Analysis (PCA) showed that soil properties (i.e. pH, organic matter, stacking density, the content of nitrogen, potassium, phosphorus) and PAEs level rather than geographic latitude were main drivers of differences in bacterial community structure. These factors account for 73.04% of the total variation of the bacterial community. Among them, PAEs act as a typical pollutant is the main factor driving the composition of bacterial community in facility agriculture Mollisols. This shows that PAEs is a potential pollution risk factor, which has important guiding significance for the sustainable and healthy development of agriculture in Mollisol area.
为了更好地了解黑土中细菌群落的组成和驱动因素，我们选择了中国黑土区的 9 个具有代表性的设施农业用地进行采样，并在更大的空间尺度上对其进行了描述。这 9 个地区的土壤细菌群落结构（通过高通量测序分析确定）在属水平上表现出显著差异。细菌群落组成与土壤性质、污染物和地理纬度的相关性表明，在邻苯二甲酸酯的影响下，细菌群落的多样性仍然与 pH 值和 SOM 强烈相关（P<0.05）。主成分分析（PCA）表明，土壤性质（即 pH 值、有机质、堆积密度、氮、钾、磷含量）和 PAEs 水平而不是地理纬度是细菌群落结构差异的主要驱动因素。这些因素占细菌群落总变异的 73.04%。其中，PAEs 作为一种典型的污染物，是设施农业黑土中细菌群落组成的主要驱动因素。这表明 PAEs 是一种潜在的污染风险因素，对黑土区农业的可持续和健康发展具有重要的指导意义。
