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Tao Z, Liu Y, Li S, Li B, Fan X, Liu C, Hu C, Liu H, Li Z. Global warming potential assessment under reclaimed water and livestock wastewater irrigation coupled with co-application of inhibitors and biochar. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 353:120143. [PMID: 38301477 DOI: 10.1016/j.jenvman.2024.120143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 12/11/2023] [Accepted: 01/09/2024] [Indexed: 02/03/2024]
Abstract
The application of nitrification inhibitors (nitrapyrin) and urease inhibitors (N-(N-butyl) thiophosphoric triamide) under conventional water resources has been considered as an effective means to improve nitrogen utilization efficiency and mitigate soil greenhouse gas emissions. However, it is not known whether the inhibitors still have an inhibitory effect under unconventional water resources (reclaimed water and livestock wastewater) irrigation and whether their use in combination with biochar improves the mitigation effect. Therefore, unconventional water resources were used for irrigation, with groundwater (GW) control. Nitrapyrin and N-(N-butyl) thiophosphoric triamide were used alone or in combination with biochar in a pot experiment, and CO2, N2O, and CH4 emissions were measured. The results showed that irrigation of unconventional water resources exacerbated global warming potential (GWP). All exogenous substance treatments increased CO2 and CH4 emissions and suppressed N2O emissions, independent of the type of water, compared to no substances (NS). The inhibitors were ineffective in reducing the GWP whether or not in combination with biochar, and the combined application of inhibitors with biochar further increased the GWP. This study suggests that using inhibitors and biochar in combination to regulate the greenhouse effect under unconventional water resources irrigation should be done with caution.
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Affiliation(s)
- Zhen Tao
- Agricultural Water and Soil Environmental Field Science Observation Research Station, Institute of Farmland Irrigation of CAAS, Xinxiang, 453002, China
| | - Yuan Liu
- Agricultural Water and Soil Environmental Field Science Observation Research Station, Institute of Farmland Irrigation of CAAS, Xinxiang, 453002, China
| | - Siyi Li
- Agricultural Water and Soil Environmental Field Science Observation Research Station, Institute of Farmland Irrigation of CAAS, Xinxiang, 453002, China
| | - Baogui Li
- Agricultural Water and Soil Environmental Field Science Observation Research Station, Institute of Farmland Irrigation of CAAS, Xinxiang, 453002, China; College of Land Science and Technology, China Agricultural University, Haidian District, Beijing, 100193, China
| | - Xiangyang Fan
- Agricultural Water and Soil Environmental Field Science Observation Research Station, Institute of Farmland Irrigation of CAAS, Xinxiang, 453002, China
| | - Chuncheng Liu
- Agricultural Water and Soil Environmental Field Science Observation Research Station, Institute of Farmland Irrigation of CAAS, Xinxiang, 453002, China
| | - Chao Hu
- Agricultural Water and Soil Environmental Field Science Observation Research Station, Institute of Farmland Irrigation of CAAS, Xinxiang, 453002, China
| | - Hongen Liu
- Resources and Environment College, Henan Agricultural University, Zhengzhou, 450002, China
| | - Zhongyang Li
- Agricultural Water and Soil Environmental Field Science Observation Research Station, Institute of Farmland Irrigation of CAAS, Xinxiang, 453002, China; National Research and Observation Station of Shangqiu Agro-ecology System, Shangqiu, 476000, China.
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