Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1088/1748-9326/ab2108 |
Do alternative irrigation strategies for rice cultivation decrease water footprints at the cost of long-term soil health? | |
Livsey, John1,2; Katterer, Thomas3; Vico, Giulia4; Lyon, Steve W.1,2,5; Lindborg, Regina1,2; Scaini, Anna1,2; Da, Chau Thi6,7; Manzoni, Stefano1,2 | |
2019-07-01 | |
发表期刊 | ENVIRONMENTAL RESEARCH LETTERS |
ISSN | 1748-9326 |
出版年 | 2019 |
卷号 | 14期号:7 |
文章类型 | Article |
语种 | 英语 |
国家 | Sweden; USA; Vietnam |
英文摘要 | The availability of water is a growing concern for flooded rice production. As such, several water-saving irrigation practices have been developed to reduce water requirements. Alternate wetting and drying and mid-season drainage have been shown to potentially reduce water requirements while maintaining rice yields when compared to continuous flooding. With the removal of permanently anaerobic conditions during the growing season, water-saving irrigation can also reduce CO2 equivalent (CO2eq) emissions, helping reduce the impact of greenhouse gas (GHG) emissions. However, the long-term impact of water-saving irrigation on soil organic carbon (SOC)-used here as an indicator of soil health and fertility-has not been explored. We therefore conducted a meta-analysis to assess the effects of common water-saving irrigation practices (alternate wetting and drying and mid-season drainage) on (i) SOC, and (ii) GHG emissions. Despite an extensive literature search, only 12 studies were found containing data to constrain the soil C balance in both continuous flooding and water-saving irrigation plots, highlighting the still limited understanding of long-term impacts of water-saving irrigation on soil health and GHG emissions. Water-saving irrigation was found to reduce emissions of CH4 by 52.3% and increased those of CO2 by 44.8%. CO2eq emissions were thereby reduced by 18.6% but the soil-to-atmosphere carbon (C) flux increased by 25% when compared to continuous flooding. Water-saving irrigation was also found to have a negative effect on both SOC-reducing concentrations by 5.2%-and soil organic nitrogen-potentially depleting stocks by more than 100 kgN/ha per year. While negative effects of water-saving irrigation on rice yield may not be visible in short-term experiments, care should be taken when assessing the long-term sustainability of these irrigation practices because they can decrease soil fertility. Strategies need to be developed for assessing the more long-term effects of these irrigation practices by considering trade-offs between water savings and other ecosystem services. |
英文关键词 | alternate wetting and drying mid-season drainage soil organic carbon rice carbon dioxide methane nitrous oxide |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000474419000006 |
WOS关键词 | GREENHOUSE-GAS EMISSIONS ; ORGANIC-MATTER ; DRYING IRRIGATION ; SAVING IRRIGATION ; CARBON STOCKS ; PADDY FIELDS ; MANAGEMENT ; YIELD ; FERTILIZATION ; INCREASE |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/184558 |
专题 | 气候变化 |
作者单位 | 1.Stockholm Univ, Dept Phys Geog, Stockholm, Sweden; 2.Stockholm Univ, Bolin Ctr Climate Res, Stockholm, Sweden; 3.Swedish Univ Agr Sci, Dept Ecol, Uppsala, Sweden; 4.Swedish Univ Agr Sci, Dept Crop Prod Ecol, Uppsala, Sweden; 5.Nature Conservancy, Delmont, NJ USA; 6.Ton Duc Thang Univ, Environm Engn & Management Res Grp, Ho Chi Minh City, Vietnam; 7.Ton Duc Thang Univ, Fac Environm & Labour Safety, Ho Chi Minh City, Vietnam |
推荐引用方式 GB/T 7714 | Livsey, John,Katterer, Thomas,Vico, Giulia,et al. Do alternative irrigation strategies for rice cultivation decrease water footprints at the cost of long-term soil health?[J]. ENVIRONMENTAL RESEARCH LETTERS,2019,14(7). |
APA | Livsey, John.,Katterer, Thomas.,Vico, Giulia.,Lyon, Steve W..,Lindborg, Regina.,...&Manzoni, Stefano.(2019).Do alternative irrigation strategies for rice cultivation decrease water footprints at the cost of long-term soil health?.ENVIRONMENTAL RESEARCH LETTERS,14(7). |
MLA | Livsey, John,et al."Do alternative irrigation strategies for rice cultivation decrease water footprints at the cost of long-term soil health?".ENVIRONMENTAL RESEARCH LETTERS 14.7(2019). |
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