Characteristics of groundwater pollution in a vegetable cultivation area of typical facility agriculture in a developed city
| Autor: | Yan-Jie Qi, Jin Mengye, Xiao-Song He, Zhen-Hai Liu, Yan Ma, Beidou Xi, Qun-Liang Li, Yi Guo |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
0106 biological sciences
chemistry.chemical_classification Pollutant Ecology General Decision Sciences 010501 environmental sciences 010603 evolutionary biology 01 natural sciences Manure Humus chemistry Groundwater pollution Environmental chemistry Dissolved organic carbon Environmental science Organic matter Leaching (agriculture) Ecology Evolution Behavior and Systematics Groundwater 0105 earth and related environmental sciences |
| Zdroj: | Ecological Indicators. 105:709-716 |
| ISSN: | 1470-160X |
| DOI: | 10.1016/j.ecolind.2018.10.056 |
| Popis: | Vegetable cultivation may cause groundwater pollution. This study investigated the characteristics of shallow groundwater pollution from agricultural activities in North China and the geochemical behavior of major pollutants. The results showed that the groundwater was in a highly saline reductive environment, and the concentration of nitrate was higher than that of ammonium. The humification degree of dissolved organic matter (DOM) varied at different sampling points. Sources of DOM in the groundwater were similar, and manure components leaching into groundwater enhanced microbial metabolism activities. DOM mainly comprised small molecules and easily degradable proteins as well as humic substances that were bound to proteinaceous substances. Concentrations of eight heavy metals detected did not exceed China’s drinking water standards. Correlation results showed that the characteristics of fluorescent organic matter could better reflect the status of groundwater pollution. Cr, Ni, Zn, and Mo were associated with DOM, mainly complexed with small molecular fluorescent organic matter. Organic carbon, nutrients and inorganic salts would influence the fate and transport of perfluorinated compounds in the groundwater. In the process of vegetable planting, organic manure should be applied through best practices, and supervision of the planting area is crucial for avoiding groundwater pollution. |
| Databáze: | OpenAIRE |
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