Responses difference analysis of soil potential nitrification rates to Cu and sulfadiazine
Responses difference analysis of soil potential nitrification rates to Cu and sulfadiazine
复制标题
土壤潜在硝化速率对Cu和磺胺嘧啶的响应差异分析
DOI：
10.1080/26395940.2019.1620132
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发表时间：
2019
影响因子：
3.3
通讯作者：
Liu Aiju
中科院分区：
文献类型：
--
作者：
Liao Qiang Li Mingzhu Dong Yuanpeng Shao Yifei Liu Xijuan Hu Xinxin Li Menghong;Liu Aiju
摘要 为探讨土壤潜在硝化率（PNR）对重金属和抗生素的响应差异，在中国不同地点采集的四种典型土壤中进行了铜和磺胺嘧啶（SDZ）的批量毒性实验。根据Logistic模型计算的EC20和EC50值评价Cu和SDZ对土壤PNR的毒性差异。研究发现，土壤硝化作用是除水稻土以外的土壤中铜污染的良好指标。对于SDZ，其ECX值显着高于其在土壤中的浓度水平（0.002 ~ 0.760 mg·kg-1）。因此，可以得出结论，田间土壤硝化作用可能对 Cu 比 SDZ 更敏感。进一步的Pearson相关分析表明，土壤PNR对Cu和SDZ污染的响应与土壤PNR0和pH显着相关。
ABSTRACT To investigate responses difference of soil potential nitrification rates (PNR) to heavy metals and antibiotics, batch toxicity experiments of Cu and sulfadiazine (SDZ) were conducted in four typical soils which were collected from different locations of China. Toxic differences of Cu and SDZ to soil PNR were evaluated based on their values of EC20 and EC50 calculated with logistic model. It was found that soil nitrification was a good indicator of Cu contamination in soils except for paddy soil. For SDZ, their ECX values were significantly higher than its concentration level (0.002 ~ 0.760 mg·kg-1) in soils. Thus, it was concluded that soil nitrification might be more sensitive to Cu than SDZ in field soil. The further Pearson correlation analysis indicated that the response of soil PNR to Cu and SDZ contamination were significantly related with soil PNR0 and pH.