Conservation agriculture and ecosystem services: An overview

Agriculture Ecosystems & Environment, Год журнала: 2013, Номер 187, С. 87 - 105

Опубликована: Ноя. 16, 2013

Язык: Английский

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A global meta‐analysis of yield‐scaled N₂O emissions and its mitigation efforts for maize, wheat, and rice

Global Change Biology, Год журнала: 2024, Номер 30(2)

Опубликована: Фев. 1, 2024

Abstract Maintaining or even increasing crop yields while reducing nitrous oxide (N 2 O) emissions is necessary to reconcile food security and climate change, the metric of yield‐scaled N O emission (i.e., per unit yield) at present poorly understood. Here we conducted a global meta‐analysis with more than 6000 observations explore variation patterns controlling factors for maize, wheat rice associated potential mitigation options. Our results showed that average across all available data followed order (322 g Mg −1 , 95% confidence interval [CI]: 301–346) > maize (211 CI: 198–225) (153 144–163). Yield‐scaled individual crops were generally higher in tropical subtropical zones temperate zones, also trend towards lower intensities from low high latitudes. This was better explained by climatic edaphic fertilizer management, their combined effect predicted 70% variance. Furthermore, our analysis significant decrease use efficiency production systems cereal >10 ha (maize), 6.6 (wheat) 6.8 (rice), respectively. highlights indicators can be used as valuable proxies reconciling trade‐offs between mitigation. For three major staple crops, fertilization up 30%, optimizing timing placement application using enhanced‐efficiency fertilizers significantly reduced similar yields. data‐driven assessment provides some key guidance developing effective targeted adaptation strategies sustainable intensification production.

Язык: Английский

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Sampling frequency affects estimates of annual nitrous oxide fluxes

Scientific Reports, Год журнала: 2015, Номер 5(1)

Опубликована: Ноя. 2, 2015

Abstract Quantifying nitrous oxide (N 2 O) fluxes, a potent greenhouse gas, from soils is necessary to improve our knowledge of terrestrial N O losses. Developing universal sampling frequencies for calculating annual fluxes difficult, as are renowned their high temporal variability. We demonstrate daily was largely required achieve within 10% the ‘best’ estimate 28 datasets collected three continents—Australia, Europe and Asia. Decreasing regularity measurements either under- or overestimated with maximum overestimation 935%. Measurement frequency lowered using strategy based on environmental factors known affect variability, but still more than once week. Consequently, uncertainty in current global budgets associated upscaling field-based can be decreased significantly adequate frequencies.

Язык: Английский

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Impacts of urea deep placement on nitrous oxide and nitric oxide emissions from rice fields in Bangladesh

Geoderma, Год журнала: 2015, Номер 259-260, С. 370 - 379

Опубликована: Июнь 13, 2015

Язык: Английский

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The effect of supplemental irrigation after jointing on leaf senescence and grain filling in wheat

Field Crops Research, Год журнала: 2013, Номер 151, С. 35 - 44

Опубликована: Авг. 6, 2013

Язык: Английский

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Impact of nitrification inhibitor (DMPP) on soil nitrous oxide emissions from an intensive broccoli production system in sub-tropical Australia

Soil Biology and Biochemistry, Год журнала: 2014, Номер 77, С. 243 - 251

Опубликована: Июль 10, 2014

Язык: Английский

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Impact of irrigation and fertilization regimes on greenhouse gas emissions from soil of mulching cultivated maize (Zea mays L.) field in the upper reaches of Yellow River, China

Journal of Cleaner Production, Год журнала: 2020, Номер 259, С. 120873 - 120873

Опубликована: Март 9, 2020

Язык: Английский

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Influence of different nitrogen rates and DMPP nitrification inhibitor on annual N2O emissions from a subtropical wheat–maize cropping system

Agriculture Ecosystems & Environment, Год журнала: 2014, Номер 186, С. 33 - 43

Опубликована: Фев. 7, 2014

Язык: Английский

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Mitigated CH 4 and N 2 O emissions and improved irrigation water use efficiency in winter wheat field with surface drip irrigation in the North China Plain

Agricultural Water Management, Год журнала: 2015, Номер 163, С. 403 - 407

Опубликована: Ноя. 3, 2015

Язык: Английский

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Irrigation and Greenhouse Gas Emissions: A Review of Field-Based Studies

Soil Systems, Год журнала: 2020, Номер 4(2), С. 20 - 20

Опубликована: Апрель 13, 2020

Irrigation practices can greatly influence greenhouse gas (GHG) emissions because of their control on soil microbial activity and substrate supply. However, the effects different irrigation management practices, such as flood irrigations versus reduced volume methods, including drip sprinkler irrigation, GHG are still poorly understood. Therefore, this review was performed to investigate strategies emission nitrous oxide (N2O), carbon dioxide (CO2), methane (CH4) by synthesizing existing research that either directly or indirectly examined at least two rates within a single field-based study. Out thirty-two articles selected for review, found be effective in lowering rate CH4 emissions, while had highest emission. The CO2 increased mostly under low effect N2O were inconsistent, though majority studies reported continuously flooded field treatments. global warming potential (GWP) demonstrated water-saving have decrease emissions. In general, GWP higher flooded. major finding from is optimizing may help reduce net GWP. more assessing varying GHGs agricultural warranted.

Язык: Английский

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