| 杨燕玲,刘地,寇天乐,张一,贾宏涛,朱新萍,杨志莹.南疆不同覆膜年限棉田土壤邻苯二甲酸酯的累积分布特征[J].农业环境科学学报,2026,45(9):2284-2295. |
| 南疆不同覆膜年限棉田土壤邻苯二甲酸酯的累积分布特征 |
| Cumulative distribution characteristics of phthalate in soil of cotton fields with varying duration of mulch film application in southern Xinjiang |
| 投稿时间：2025-07-28 |
| DOI：10.11654/jaes.2025-0726 |
| 中文关键词: 邻苯二甲酸酯 多环芳烃 生态风险 覆膜年限 |
| 英文关键词: phthalates polycyclic aromatic hydrocarbons ecological risk mulch film application duration |
| 基金项目:新疆维吾尔自治区重点研发专项“新疆棉田地膜污染阻控与综合防治技术研究”（2022B02017） |
| 作者 | 单位 | E-mail | | 杨燕玲 | 新疆农业大学资源与环境学院, 乌鲁木齐 830052
新疆维吾尔自治区农业科学院农业资源与环境研究所, 乌鲁木齐 830091
北京农学院生物与资源环境学院, 北京 102206 | | | 刘地 | 新疆农业大学资源与环境学院, 乌鲁木齐 830052 | | | 寇天乐 | 新疆农业大学资源与环境学院, 乌鲁木齐 830052 | | | 张一 | 新疆农业大学资源与环境学院, 乌鲁木齐 830052 | | | 贾宏涛 | 新疆土壤与植物生态过程重点实验室, 乌鲁木齐 830052
新疆农业大学生命科学学院, 乌鲁木齐 830052 | | | 朱新萍 | 北京农学院生物与资源环境学院, 北京 102206
新疆土壤与植物生态过程重点实验室, 乌鲁木齐 830052
农业农村部华北都市农业重点实验室, 北京 102206 | zhuxinping1978@163.com | | 杨志莹 | 新疆维吾尔自治区农业科学院农业资源与环境研究所, 乌鲁木齐 830091 | 804298720@qq.com |
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| 中文摘要: |
| 为探明不同覆膜年限棉田土壤中邻苯二甲酸酯（PAEs）的累积分布特征，评估其生态风险，本研究通过田间调查采集了新疆维吾尔自治区南疆巴楚县、沙雅县和图木舒克市不同覆膜年限（0~10、11~20、21~30、>30 a）及不同土层（0~20、20~40 cm）的农田土壤，并采用气相色谱-质谱法对24种PAEs进行分析。结果表明，随着覆膜年限的增加，调查区域土壤中PAEs的含量与覆膜年限不存在线性关系。3个调查区域5种PAEs单体检出率均为100%，其含量为DEHP>DHP>DBP>DINP>DNP，其中DEHP含量最高，占邻苯二甲酸酯总量（∑PAEs）的48.59%~55.53%，DNP含量最低，占∑PAEs的1.93%~3.29%。垂直分布上，0~20 cm土壤中PAEs的含量总体高于20~40 cm土壤。覆膜年限>30 a时，DINP与DNP单体含量在棉田土壤0~20 cm中分布较高。覆膜年限增加不同程度显著降低了0~20 cm土壤电导率、速效钾和碱解氮含量。不同年限PAEs与土壤化学性质之间存在不同程度的相关性，覆膜>30 a土壤的化学指标与PAEs及单体呈显著正相关性。经评价，3个研究区域不同覆膜年限土壤中DEHP、DBP处于低生态风险水平。 |
| 英文摘要: |
| To investigate the accumulation and distribution characteristics of phthalic acid esters（PAEs）in soils of cotton fields with different film mulching durations and assess their ecological risks, this study collected farmland soil samples from different soil layers（0- 20, 20-40 cm）with varying film mulching durations（0-10, 11-20, 21-30, >30 a）in Bachu County, Shaya County, and Tumushuke City, southern Xinjiang Uygur Autonomous Region, through field surveys. A total of 24 PAEs congeners were analyzed using gas chromatography-mass spectrometry（GC-MS）. The results showed that with the increase of film mulching duration, there was no linear relationship between the concentration of PAEs in the soil of the surveyed area and the mulching duration. The detection rate of five phthalate monomers in the three survey areas was 100%, with the concentration order being DEHP>DHP>DBP>DINP>DNP. Among them, DEHP had the highest concentration, accounting for 48.59%-55.53% of the total PAEs（∑PAEs）, while DNP had the lowest concentration, accounting for 1.93%-3.29% of ∑PAEs. In terms of vertical distribution, the PAEs content in the 0-20 cm soil layer was generally higher than that in the 20-40 cm soil layer. For fields with film mulching duration >30 a, the concentrations of DINP and DNP congeners were relatively higher in the 0-20 cm soil layer of cotton fields. The increase in film mulching duration reduced the electrical conductivity（EC）, available potassium, and alkali-hydrolyzable nitrogen contents in the 0-20 cm soil layer to varying degrees. There were varying degrees of correlations between PAEs and soil chemical properties across different mulching durations, and significant positive correlations were observed between soil chemical indicators and PAEs（including their congeners）in fields with mulching duration >30 a. The results showed that the levels of DEHP and DBP in the soil were at low risk level in the three study areas. |
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