Influence of surface-water irrigation on the distribution of organophosphorus pesticides in soil-water systems, Jianghan Plain, central China.
Influence of surface-water irrigation on the distribution of organophosphorus pesticides in soil-water systems, Jianghan Plain, central China.
复制标题
江汉平原地表水灌溉对土壤水系统有机磷农药分布的影响
DOI：
10.1016/j.jenvman.2020.111874
复制
发表时间：
2021
影响因子：
8.7
通讯作者：
Yue Weifeng
中科院分区：
文献类型：
--
作者：
Wang Jianwei;Zhang Caixiang;Liao Xiaoping;Teng Yanguo;Zhai Yuanzheng;Yue Weifeng
地表水灌溉是地表水资源丰富地区最重要的灌溉方式之一。虽然这种灌溉方法既经济又方便，但许多污染物也被引入土壤-水系统，如有机磷农药（OPPs）。为研究地表水灌溉对有机磷农药在土壤-水系统中分布的影响，在江汉平原沙湖采集了42个水样（38个地下水和4个地表水）和85个土壤样品（78个剖面土和7个表土）。沙湖是我国典型的地表水灌区。在取样过程中，考虑了三种类型的地区：地表水灌溉区、远离河流的地下水灌溉区和靠近河流的非灌溉区。结果表明，地表水灌溉农田地下水和土壤中有机磷农药浓度均高于地下水灌溉农田。地下水流场和地表水灌溉是造成OPPs的主要原因。可见，地表水灌溉对有机磷农药在土壤-水系统中的分布有很大的影响。对地下水中有机磷农药含量的主成分分析表明，地下水流场和农药使用现状是影响地下水中有机磷农药分布的主要因素。
Surface-water irrigation is one of the most important irrigation methods in areas with abundant surface water. Although this method of irrigation is both economical and convenient, many contaminants are also introduced into the soil-water systems such as organophosphorus pesticides (OPPs). To study the influence of surface-water irrigation on the distribution of OPPs in soil-water systems, 42 water samples (38 groundwater and four surface water) and 85 soil samples (78 profile soil samples and seven topsoil samples) were taken from Shahu in the Jianghan Plain, China. Shahu is a typical Chinese surface-water irrigation district. During sampling, three types of areas were considered: surface-water irrigated areas, groundwater-irrigated areas away from rivers, and non-irrigated areas adjacent to rivers. The results showed that the concentrations of OPPs in the groundwater and soil in the surface-water irrigated farmland were higher than those in groundwater-irrigated farmland. The groundwater flow field and surface-water irrigation were responsible for the OPPs. Thus, it is clear that the surface-water irrigation had a strong influence on the distribution of OPPs in soil-water systems. Principal component analysis for OPPs content in groundwater showed that the key influencing factors on the distribution of OPPs in groundwater were the groundwater flow field and current pesticide use.