[1]崔嵩,付强,李天霄,等.冻融期土壤温度对有机污染物迁移行为的影响[J].水土保持研究,2016,23(03):314-320.
　CUI Song,FU Qiang,LI Tianxiao,et al.Effect of Soil Temperature on Migration Behavior of Organic Pollutants During Freeze-Thaw Period[J].Research of Soil and Water Conservation,2016,23(03):314-320.
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冻融期土壤温度对有机污染物迁移行为的影响

《水土保持研究》[ISSN:1005-3409/CN:61-1272/P] 卷: 23 期数: 2016年03期 页码: 314-320 栏目: 出版日期: 2016-06-28
Title:
Effect of Soil Temperature on Migration Behavior of Organic Pollutants During Freeze-Thaw Period
作者:
崔嵩1,2, 付强1,2, 李天霄1,2, 李一凡3
1. 东北农业大学 水利与建筑学院, 哈尔滨 150030;
2. 东北农业大学 国际持久性有毒物质联合研究中心, 哈尔滨 150030;
3. 哈尔滨工业大学 国际持久性有毒物质联合研究中心, 哈尔滨 150090
Author(s):
CUI Song1,2, FU Qiang1,2, LI Tianxiao1,2, LI Yifan3
1. School of Water Conservancy & Civil Engineering, Northeast Agricultural University, Harbin 150030, China;
2. International Joint Research Center for Persistent Toxic Substances, Northeast Agricultural University, Harbin 150030, China;
3. International Joint Research Center for Persistent Toxic Substances, Harbin Institute of Technology, Harbin 150090, China
关键词:
冻融期; 土壤温度; 有机污染物; 迁移行为
Keywords:
freeze-thaw period; soil temperature; organic pollutants; migration behavior
分类号:
X592;S152.8
摘要:
为了解季节性冻融期土壤垂直分层温度变化对有机污染物迁移扩散行为的影响。通过冬季大田试验分别测定了裸地，5，10，15 cm厚度秸秆覆盖条件下3，10，20，40，60，100 cm深度土壤温度，并应用土—气交换层及相邻土壤层迁移扩散通量系数，深入研究了土壤温度变化对有机污染物迁移行为的影响，并系统地分析了不同温度数据对模拟结果产生的差异性。研究结果表明：不同覆盖条件下深层土壤有机氯农药α-HCH迁移扩散通量系数数值的变化与土壤层厚度有关；土壤垂直分层温度的变化与α-HCH的迁移扩散通量系数呈显著正相关，且随着土壤深度的增加相关性逐渐减弱；日平均气温变化与土—气交换层α-HCH的迁移扩散通量系数的变化具有明显的一致性（R=0.999，p=0.000）；日平均气温与土壤垂直分层温度观测数据建立的回归方程能够较好地与0—40 cm土壤深度实测温度相吻合：y=-0.788+0.818x（3 cm，R=0.964，p < 0.01），y=-1.214+0.705x（10 cm，R=0.942，p < 0.01），y=0.912+0.474x（20 cm，R=0.836，p < 0.01），y=1.004+0.361x（40 cm，R=0.714，p < 0.01）；40 cm深度土壤预测温度计算α-HCH迁移扩散通量系数产生的相对误差小于使用日平均气温作为替代数据的计算结果。本研究结果将可能为有机污染物在土壤中的迁移扩散行为及相关数值模拟研究提供参考价值。
Abstract:
In order to understand soil effects of temperatures in different vertical layers on migration and diffusion behavior of organic pollutants during freeze-thaw period, the coefficient of migration and diffusion flux was used to assess the migration behavior of the soil-air exchange layer and adjacent soil layers. We deeply discussed the soil temperature effect on migration of organic pollutants and systematically analyzed differences on simulation results applying different temperature data. The results show that the migration and diffusion D value of α-HCH in deep soil was related with the thickness of soil layer; the soil temperatures of different vertical layers affected the migration and diffusion behavior of α-HCH; the change of diurnal average air temperature strongly affected the environmental behavior of α-HCH at soil-air exchange layer (R=0.999, p=0.000); the established regression equation between diurnal average air temperature and soil vertical layer temperature could well coincide with measured temperatures of different soil depths: y=-0.788+0.818x (3 cm, R=0.964, p < 0.01);y=-1.214+0.705x (10 cm, R=0.942, p < 0.01); y=0.912+0.474x (20 cm, R=0.836, p < 0.01);y=1.004+0.361x (40 cm, R=0.714, p < 0.01);The relative error of migration and diffusion D value used to predict temperature was less than using diurnal average air temperature as surrogate data. The established regression equation applying diurnal average air temperature in this study has great significance for examining the soil temperature effects of different vertical layers on migration and diffusion behavior of organic pollutants, and can further improve and enhance the accuracy of simulation results applying multimedia environmental modeling and diffusion modeling.

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备注/Memo

收稿日期:2015-05-17;改回日期:2015-06-16。
基金项目:国家自然科学基金（51279031，41401550）；黑龙江省自然科学基金（E201241）；黑龙江省博士后资助项目（LBH-Z13029）；教育部新世纪优秀人才支持计划（NCET-11-0952）；黑龙江省杰出青年基金（JC201402）；东北农业大学“青年才俊”基金（14QC49）
作者简介:崔嵩(1981-),男,黑龙江宝清人,博士,副教授,主要从事农业水土资源环境效应及持久性有毒物质数值模拟研究。E-mail:cuisong-bq@163.com
通讯作者:付强(1973-),男,黑龙江哈尔滨人,博士,教授,博士生导师,主要从事农业水土资源系统分析和节水灌溉研究。E-mail:fuqiang0629@126.com

更新日期/Last Update: 1900-01-01