Purpose Recently, N 2 O, CO 2 , and CH 4 have been gaining attention as major greenhouse gases (GHGs) that contribute to global warming. Agricultural water-saving irrigation technology has become more and more important and is widely applied to the arid areas. These influences have important and strategic significances for reducing greenhouse effects. However, there is limit information regarding the influence of irrigation methods on soil gases emissions. We investigated the effect of mulched drip irrigation (MDI), drip filtration irrigation (DFI), and conventional irrigation (CK) on N 2 O, CO 2 , CH 4 emissions, affecting factors and their correlations in a greenhouse soil. Materials and methods Observations were performed from April to August in 2015 on the entire tomato growth season. We monitored the flux of GHG emissions by the static chamber-gas chromatograph method under three irrigation conditions: mulched drip irrigation (MDI), drip filtration irrigation (DFI), and conventional irrigation (CK). To investigate the effects of affecting factors on soil GHG emissions, we also measured soil temperature (5 cm), soil moisture, and air temperature. Compared with the cumulative emission of GHGs (N 2 O and CH 4 calculation in the form of CO 2 ), we created the concept of the ratio of yield and gas (crop yield and soil accumulated GHG emissions). Results and discussion Tomato yield of MDI and DFI is significantly higher than CK. Soil moisture is the main factor affecting N 2 O emissions and CH 4 exchange during the tomato-growing season. N 2 O emission fluxes have an extremely significant correlation with water-filled pore space (WFPS) at suitable temperatures. CO 2 emissions demonstrated a significant correlation with environment temperature (soil and air). CO 2 emissions gradually increased and had seasonal variations with rising temperatures and plant growth in each irrigation method. CH 4 exchange fluxes showed a significant correlation with WFPS. Conclusions MDI obtains high yields, is cost-efficient, conserves water, and produces the least amount of integrated GHGs. It helps to mitigate global warming and it would be the best irrigation method.

Xuhong Ye

Hongdou Liu

Xichao Zhang

Jianhui Ma

Bing Han

Wen Li

Hongtao Zou

Yulong Zhang

Xiangui Lin

Journal of Soils and Sediments

JOURNAL OF SOILS AND SEDIMENTS (JSS) 致力于土壤和沉积物；它处理受污染、完整和受干扰的土壤和沉积物。 JSS 探讨了这两个环境分区之间的共同点和差异。流域尺度和与地球系统（隔室）的相互联系是 JSS 中的一个重要主题。研究范围包括干扰和污染的影响；预测、预防和保护的研究、策略和技术；识别和表征；处理、修复和再利用；风险评估和管理；制定和实施质量标准；国际法规和立法。

The Journal of Soils and Sediments (JSS) focuses on the study of soils and sediments, addressing contaminated, intact, and disturbed soils and sediments. This journal explores the similarities and differences between these two environmental compartments, with an emphasis on watershed scales and their interactions with the Earth system (compartments). The scope of research includes the impacts of disturbance and pollution, studies on prediction and prevention, protection strategies and technologies, identification and characterization, treatment and remediation, reuse, risk assessment and management, the formulation and implementation of quality standards, and international regulations and legislation.

《Journal of Soils and Sediments》致力于研究土壤和沉积物，涵盖受污染、完整和受干扰的土壤与沉积物。该期刊探讨这两个环境分区之间的相似性与差异性，重点关注流域尺度及其与地球系统（隔室）的相互联系。研究范围包括干扰和污染的影响、预测与预防的研究、保护策略与技术、识别与表征、处理与修复、再利用、风险评估与管理、质量标准的制定与实施，以及国际法规与立法。

Category	Quartile
农林科学	3
农林科学, 环境科学	3
农林科学, 土壤科学	3

Impacts of irrigation methods on greenhouse gas emissions/absorptions from vegetable soils

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Journal Info

Category	Quartile
SOIL SCIENCE	2