The effects of slope and fertilizer rates on nitrogen losses in runoff from red soil and paddy soil during simulated rainfall
文献类型：期刊论文
| 作者 | Li, Ying4,5,6; Li, Baolin3,4,6; Lei, Qiuliang5; Yan, Tiezhu5; Du, Xinzhong5; Luo, Jiafa2; Lindsey, Stuart2; Di, Hongjie1; Liu, Hongbin5 |
| 刊名 | JOURNAL OF SOILS AND SEDIMENTS
 |
| 出版日期 | 2022-05-26 |
| 页码 | 11 |
| 关键词 | Nitrogen loss Simulated rainfall Soil type Slope gradient Fertilizer rate Runoff |
| ISSN号 | 1439-0108 |
| DOI | 10.1007/s11368-022-03236-6 |
| 通讯作者 | Lei, Qiuliang(leiqiuliang@caas.cn) ; Liu, Hongbin(liuhongbin@caas.cn) |
| 英文摘要 | Purpose Runoff and soil erosion reflect the interactions of soil properties and rainfall. However, few researchers have investigated the forms of nitrogen lost, the first flush, and the relationships between nitrogen losses and rainfall, runoff duration, different slope gradients, and fertilizer rates on red soils and paddy soils. Materials and methods This study examined the nitrogen losses (NH4+-N, NO3--N, and TN) in runoff under simulated rainfall conditions with an intensity of 80 mm/h. The slope angles were set at 0 degrees, 5 degrees, and 15 degrees for the red soil, and 0 degrees and 5 degrees for the paddy soil. The fertilizer was applied to the soils at 3 rates, i.e., 60, 180, and 300 kg N/hm(2). Results and discussion The results showed that the cumulative rainfall required to generate runoff differed significantly for different slope gradients, and the value for the red soil was 46.46 mm at 0 degrees, which was 3.46 and 4.62 times of the rainfalls at 5 degrees and 15 degrees. The value for the paddy soil was 20.09 mm (average of 0 degrees and 5 degrees), which was half of red soil's value. Of the TN lost in a 90-min event, 57.25 +/- 12.62% was lost in the first 20 min of runoff generation, with the losses decreasing as the runoff generation time increased. The NH4+-N/TN and NO3--N/TN differed significantly at different fertilizer N levels (P < 0.01). As the fertilizer application rate increased, the NH4+-N/TN tended to increase while the NO3--N/TN tended to decrease. The NH4+-N/TN decreased exponentially, while NO3--N/TN increased logarithmically, as the runoff duration time increased. A model, which included parameters to predict the initial losses of precipitation, was established to simulate the processes driving TN losses under different conditions. It is useful to analyze the TN losses from different soil types, slope gradients, and fertilizer rates. Conclusion The threshold slope gradient, first flush effect, and the TN loss process of the red and paddy soil were determined in this study. This information derived can potentially contribute to developing measures for reducing agricultural diffuse pollution and improving resource allocation. |
| WOS关键词 | SEDIMENT YIELD ; SURFACE RUNOFF ; INTERRILL EROSION ; PHOSPHORUS LOSSES ; CLIMATE-CHANGE ; INTENSITY ; IMPACTS ; GRADIENT ; LENGTH ; ERODIBILITY |
| 资助项目 | National Natural Science Foundation of China[U20A20114] ; National Natural Science Foundation of China[31572208] ; Taishan Industry Leading Talents High-Efficiency Agriculture Innovation Project[LJNY202125] |
| WOS研究方向 | Environmental Sciences & Ecology ; Agriculture |
| 语种 | 英语 |
| WOS记录号 | WOS:000800432300001 |
| 出版者 | SPRINGER HEIDELBERG |
| 资助机构 | National Natural Science Foundation of China ; Taishan Industry Leading Talents High-Efficiency Agriculture Innovation Project |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/178551]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Lei, Qiuliang; Liu, Hongbin |
| 作者单位 | 1.Lincoln Univ, Ctr Soil & Environm Res, POB 85084, Lincoln 7647, New Zealand 2.AgResearch Ltd, Ruakura Res Ctr, Hamilton 3240, New Zealand 3.State Environm Protect Key Lab Tibetan Eco Enviro, Xining 810007, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 5.Chinese Acad Agr Sci, Inst Agr Resources & Reg Planning, Key Lab Nonpoint Source Pollut Control, Minist Agr & Rural Affairs, Beijing 100081, Peoples R China 6.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, State Key Lab Resources & Environm Informat Syst, Beijing 100101, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Ying,Li, Baolin,Lei, Qiuliang,et al. The effects of slope and fertilizer rates on nitrogen losses in runoff from red soil and paddy soil during simulated rainfall[J]. JOURNAL OF SOILS AND SEDIMENTS,2022:11. |
| APA | Li, Ying.,Li, Baolin.,Lei, Qiuliang.,Yan, Tiezhu.,Du, Xinzhong.,...&Liu, Hongbin.(2022).The effects of slope and fertilizer rates on nitrogen losses in runoff from red soil and paddy soil during simulated rainfall.JOURNAL OF SOILS AND SEDIMENTS,11. |
| MLA | Li, Ying,et al."The effects of slope and fertilizer rates on nitrogen losses in runoff from red soil and paddy soil during simulated rainfall".JOURNAL OF SOILS AND SEDIMENTS (2022):11. |
入库方式： OAI收割
来源：地理科学与资源研究所
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