海河流域农田氮磷面源污染的空间分布特征及关键源区识别
海河流域农田氮磷面源污染的空间分布特征及关键源区识别
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ZHANG, Qiaoling , HU Haitang , WANG, Daoyun , QIU Chunxia , LI Cunjun , Cui, BAI and JING Tingting
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Xinxiang City: Chinese Academy of Agricultural Sciences (CAAS) Farmland Irrigation Research Institute Editorial Office of Journal of Irrigation and Drainage
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Xinxiang City: Chinese Academy of Agricultural Sciences (CAAS) Farmland Irrigation Research Institute Editorial Office of Journal of Irrigation and Drainage
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【目的】分析海河流域农田氮磷面源污染及对水质影响的空间分布特征，并识别关键源区，以期为该流域面源污染治理提供参考依据。【方法】基于InVEST营养物传输率模型和产水量模型，估算了海河流域农田氮磷入河负荷、河流断面氮磷入河通量和潜在氮磷径流质量浓度，结合GIS空间热点分析、水文网络分析识别面源污染关键源区。【结果】海河流域2015年氮磷入河负荷分别为2.41 kg/hm2和0.56 kg/hm2，入河总量达3.493 4万t和0.807 7万t，潜在氮、磷径流质量浓度分别为5.97、1.47 mg/L，约55%的河段超过地表V类水质TN、TP标准。农田氮磷污染呈明显的沿西北部山区向中南部平原方向上升的分布特征；农田氮磷入河负荷和潜在氮磷径流质量浓度的空间分布差异明显，前者高值分布在徒骇马颊河水...
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海河流域农田氮磷面源污染的空间分布特征及关键源区识别
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TN_cdi_wanfang_journals_ggps202104014
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https://devfeature-collection.sl.nsw.gov.au/record/TN_cdi_wanfang_journals_ggps202104014
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1672-3317
DOI
10.13522/j.cnki.ggps.2020411
