坡耕地薄层紫色土-岩石系统中氮磷的迁移特征
Transport of Nitrogen and Phosphorus from Sloping Farmland with Thin Purple Soil Overlying Rocks
查看参考文献25篇
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文摘
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于2015年两场代表性降雨事件下研究了紫色土坡耕地(1500 m~2)水文过程驱动的氮磷地表和地下迁移特征. 结果表明:①前期土壤水饱和度和降雨量决定地表径流和裂隙潜流的产流深度和胶体浓度的基本水平;降雨强度则控制产流量的变化趋势和胶体浓度的峰值水平. ②氮素主要以溶解态随裂隙潜流迁移;磷素则主要以细颗粒结合态通过地表径流流失. ③氮磷迁移过程的水文驱动特征明显,氮素迁移主要受裂隙潜流的驱动作用影响,而磷素迁移则主要受地表径流的驱动作用影响. 该研究结果丰富了对坡耕地薄层土壤-裂隙母岩二元系统中氮磷迁移对降雨响应规律的认识,可为农业氮磷非点源污染防治提供可靠的田间数据支持并明确关键的水文调控环节. |
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其他语种文摘
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In a sloping farmland plot(1500 m~2) of purple soil with underlying fractured mudrock in Southwest China, field monitoring and sampling campaigns were undertaken to explore the mechanisms of surface and subsurface transport of nitrogen and phosphorus upon two representative rain events in the summer of 2015. The results indicated that: ①depths of surface runoff and subsurface fracture flow as well as average colloid export flux were dependent on antecedent soil wetness and rainfall amount, while discharge dynamics and colloid peak concentration were determined by rainfall intensity; ②nitrogen export was mainly in dissolved forms through subsurface fracture flow, however, phosphorus was mainly transported in particle-associated forms through surface runoff; ③the transport of nitrogen and phosphorus was strongly influenced by hydrological processes, with nitrogen and phosphorus transport being controlled by fracture flow and surface runoff, respectively. Our findings contribute significantly to the knowledge of nitrogen and phosphorus export from sloping farmland with thin soil underlain by fractured rock upon rainfall, and on the other hand this study provides reliable field data in support of developing effective approaches for controlling agricultural non-point source pollution of N and P and identifying key hydrological processes to be manipulated. |
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来源
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环境科学
,2017,38(7):2843-2849 【核心库】
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DOI
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10.13227/j.hjkx.201611230
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关键词
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紫色土
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坡耕地
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径流过程
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胶体颗粒
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氮磷养分迁移
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地址
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中国科学院水利部成都山地灾害与环境研究所, 中国科学院山地表生过程与生态调控重点实验室, 成都, 610041
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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0250-3301 |
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学科
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环境污染及其防治 |
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基金
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国家重点研发计划项目
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国家自然科学基金项目
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文献收藏号
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CSCD:6021264
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参考文献 共
25
共2页
|
|
1.
Zhao P. The nitrogen loss flushing mechanism in sloping farmlands of shallow Entisol in southwestern China: a study of the water source effect.
Arabian Journal of Geosciences,2015,8(12):10325-10337
|
被引
4
次
|
|
|
|
|
2.
丁晓雯. 涪江流域农业非点源污染空间分布及污染源识别.
环境科学,2012,33(11):4025-4032
|
被引
33
次
|
|
|
|
|
3.
欧阳威. 小流域农业面源氮污染时空特征及与土壤呼吸硝化关系分析.
环境科学,2014,35(6):2411-2418
|
被引
19
次
|
|
|
|
|
4.
李如忠. 瓦埠湖流域庄墓镇农田土壤氮磷分布及流失风险评估.
环境科学,2014,35(3):1051-1059
|
被引
7
次
|
|
|
|
|
5.
单保庆. 降雨-径流过程中土壤表层磷迁移过程的模拟研究.
环境科学学报,2001,21(1):7-12
|
被引
39
次
|
|
|
|
|
6.
王辉. 前期土壤含水量对黄土坡面氮磷流失的影响及最优含水量的确定.
环境科学学报,2008,28(8):1571-1578
|
被引
20
次
|
|
|
|
|
7.
陈维梁. 紫色土坡耕地氮淋溶过程及其环境健康效应.
环境科学,2014,35(6):2129-2138
|
被引
19
次
|
|
|
|
|
8.
周明华. 紫色土坡耕地磷素流失特征及施肥方式的影响.
水利学报,2010,41(11):1374-1381
|
被引
28
次
|
|
|
|
|
9.
Vandevoort A R. Reaction conditions control soil colloid facilitated phosphorus release in agricultural Ultisols.
Geoderma,2013,206:101-111
|
被引
9
次
|
|
|
|
|
10.
张维.
紫色土坡地产流过程及胶体迁移研究,2015
|
被引
2
次
|
|
|
|
|
11.
梁涛. 西苕溪流域不同土地类型下磷素随暴雨径流的迁移特征.
环境科学,2003,24(2):35-40
|
被引
35
次
|
|
|
|
|
12.
朱波. 紫色丘陵区典型小流域氮素迁移及其环境效应.
山地学报,2006,24(5):601-606
|
被引
37
次
|
|
|
|
|
13.
蒋锐. 紫色丘陵区典型小流域暴雨径流氮磷迁移过程与通量.
水利学报,2009,40(6):659-666
|
被引
39
次
|
|
|
|
|
14.
Zhao P. Tracing water flow from sloping farmland to streams using oxygen-18 isotope to study a small agricultural catchment in southwest China.
Soil and Tillage Research,2013,134:180-194
|
被引
11
次
|
|
|
|
|
15.
Zhu B. Measurements of nitrate leaching from a hillslope cropland in the Central Sichuan Basin, China.
Soil Science Society of America Journal,2009,73(4):1419-1426
|
被引
67
次
|
|
|
|
|
16.
吕玉娟.
坡耕地紫色土水力特性及其水分与产流动态研究,2013
|
被引
3
次
|
|
|
|
|
17.
Shang J Y. Transport and retention of engineered nanoporous particles in porous media: effects of concentration and flow dynamics.
Colloids and Surfaces A: Physicochemical and Engineering Aspects,2013,417:89-98
|
被引
2
次
|
|
|
|
|
18.
曹杰君. 长三角典型村域次降雨条件下氮素非点源输出特征.
环境科学,2010,31(11):2587-2593
|
被引
21
次
|
|
|
|
|
19.
胡万里. 南方丘陵区耕地磷素地表径流流失特征研究.
西南农业学报,2016,29(11):2676-2681
|
被引
5
次
|
|
|
|
|
20.
沈茜. 紫色丘陵区典型小流域非点源磷迁移特征.
山地学报,2015,33(5):528-537
|
被引
7
次
|
|
|
|
|
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