浅丘水网区种养复合型流域氮磷输移沿程变化

doi:10.14088/j.cnki.issn0439-8114.2025.09.012

湖北农业科学 ›› 2025, Vol. 64 ›› Issue (9): 73-79.doi: 10.14088/j.cnki.issn0439-8114.2025.09.012

浅丘水网区种养复合型流域氮磷输移沿程变化

张沁菁^1,2,3, 蒋田雨⁴, 庄艳华^1,2,3

1.中国科学院精密测量科学与技术创新研究院/湖北省面源污染防治工程技术研究中心,武汉 430077;
2.环境与灾害监测评估湖北省重点实验室,武汉 430077;
3.中国科学院大学,北京 100049;
4.武汉市环境保护科学研究院,武汉 430000

收稿日期:2025-03-28 出版日期:2025-09-25 发布日期:2025-10-28
通讯作者: 蒋田雨,工程师,主要从事地表水污染治理研究,（电子信箱）tyjiangandhwt@sina.cn;庄艳华,研究员,主要从事农业面源污染、流域水环境演变研究,（电子信箱）zhuang@apm.ac.cn。
作者简介:张沁菁（2001-）,女,湖北咸宁人,在读硕士研究生,研究方向为面源污染监测与防治,（电子信箱）zhangqinjing@apm.ac.cn。
基金资助:
国家自然科学基金项目（42477091; U21A2025）

Transport dynamics of nitrogen and phosphorus along the gradient in an integrated agri-aquaculture watershed of shallow hilly water network region

ZHANG Qin-jing^1,2,3, JIANG Tian-yu⁴, ZHUANG Yan-hua^1,2,3

1. Innovation Academy for Precision Measurement Science and Technology/Hubei Provincial Engineering Research Center of Non-Point Source Pollution Control, Chinese Academy of Sciences, Wuhan 430077, China;
2. Hubei Key Laboratory for Environment and Disaster Monitoring and Evaluation , Wuhan 430077, China;
3. University of Chinese Academy of Sciences, Beijing 100049, China;
4. Wuhan Academy of Environmental Protection Sciences, Wuhan 430000, China

Received:2025-03-28 Published:2025-09-25 Online:2025-10-28

摘要/Abstract

摘要： 选取浅丘水网区典型种养复合型流域鲁湖流域为研究区,通过“源头-过程-末端”的方法对流域内总氮（TN）、总磷（TP）迁移过程中的浓度变化进行沿程监测,研究不同土地利用类型和景观格局背景下的污染物输移沿程变化。结果表明,在人类活动影响下,不同土地利用类型土壤TN、TP含量存在明显差异,TN含量表现为养殖场>旱地>苗圃>水田>村镇>林地,TP含量表现为村镇>旱地>养殖场>水田>林地=苗圃;次降雨条件下,不同土地利用类型的径流污染物浓度也表现出差异性,TN平均浓度表现为养殖场>水田>村镇>旱地>养殖塘>苗圃>林地,TP平均浓度表现为养殖场>村镇>旱地>苗圃>养殖塘>水田>林地;污染物在流域中的输移过程受到污染物来源、路径及赋存形态差异的影响,沿程TN和TP表现出不同的衰减规律,TN平均浓度表现为河道>湖泊>沟渠,TP平均浓度表现为沟渠>河道>湖泊;“末端”TN和TP浓度与缓冲区内养殖塘面积占比呈显著正相关（P<0.01）,养殖塘对受纳水体具有更高的氮磷污染风险。

关键词: 农业面源污染, 氮磷流失, “源头-过程-末端”全过程, 种养复合, 浅丘水网区

Abstract: Luhu Lake watershed, a representative integrated agri-aquaculture watershed within shallow hilly water network region, was selected as the research area. The concentration changes of total nitrogen (TN) and total phosphorus (TP) in the migration process of the watershed were monitored along the way through the “source-process-end” method, and the changes of pollutant transport along the way under different land use types and landscape patterns were studied. The results demonstrated significant variations in soil TN and TP contents across land use types influenced by human activities. The soil TN content ranked as livestock farms > drylands > nurseries > paddy fields > villages and towns > forests, while the soil TP content was in the order of villages > drylands > livestock farms > paddy fields > forests = nurseries. Under a single rainfall event,the concentrations of runoff pollutants in different land use types also showed differences. The average concentration of TN was in the order of farms > paddy fields > villages and towns > drylands > aquaculture ponds > nursery > forests, and the average concentration of TP was in the order of farms > villages and towns > drylands > nursery > aquaculture ponds > paddy fields > forests. The transport process of pollutants in the watershed was affected by the differences in pollutant sources, paths and occurrence forms. TN and TP showed different attenuation laws along the river. The average concentration of TN was expressed as river > lake > ditch, and the average concentration of TP was expressed as ditch > river > lake. The concentrations of TN and TP in the “end” buffer zone were significantly positively correlated with the proportion of aquaculture ponds in the buffer zone（P<0.01）, and the aquaculture ponds had a higher risk of nitrogen and phosphorus pollution to the receiving water body.

Key words: agricultural non-point source pollution, nitrogen and phosphorus loss, “source-process-end” continuum, integrated agri-aquaculture, shallow hilly water network region

中图分类号:

张沁菁, 蒋田雨, 庄艳华. 浅丘水网区种养复合型流域氮磷输移沿程变化[J]. 湖北农业科学, 2025, 64(9): 73-79.

ZHANG Qin-jing, JIANG Tian-yu, ZHUANG Yan-hua. Transport dynamics of nitrogen and phosphorus along the gradient in an integrated agri-aquaculture watershed of shallow hilly water network region[J]. HUBEI AGRICULTURAL SCIENCES, 2025, 64(9): 73-79.

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浅丘水网区种养复合型流域氮磷输移沿程变化

Transport dynamics of nitrogen and phosphorus along the gradient in an integrated agri-aquaculture watershed of shallow hilly water network region

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