Changes in planting methods will change the potential distribution of rice in South China under climate warming

Li, Shuo; Lu, Zhengxin; Zhao, Jie; Luo, Ming; Chen, Fu; Chu, Qingquan

doi:10.1016/j.agrformet.2023.109355

Cited by 12 publications

(9 citation statements)

References 68 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Under global warming, China’s rice paddies are expected to emit an additional 0.73 Tg CH 4 for every 1 °C increase in temperature . Additionally, the northward expansion of the rice cultivation belt will further increase the irrigation demand for rice growth and irrigation-related GHG emissions. Therefore, the promotion of AWD irrigation technology is an urgent mitigation strategy to escape this vicious cycle caused by climate change.…”

Section: Resultsmentioning

confidence: 99%

Toward Low-Carbon Rice Production in China: Historical Changes, Driving Factors, and Mitigation Potential

Li,

Lu,

et al. 2024

Environ. Sci. Technol.

View full text Add to dashboard Cite

Under the "Double Carbon" target, the development of low-carbon agriculture requires a holistic comprehension of spatially and temporally explicit greenhouse gas (GHG) emissions associated with agricultural products. However, the lack of systematic evaluation at a fine scale presents considerable challenges in guiding localized strategies for mitigating GHG emissions from crop production. Here, we analyzed the countylevel carbon footprint (CF) of China's rice production from 2007 to 2018 by coupling life cycle assessment and the DNDC model. Results revealed a significant annual increase of 74.3 kg CO 2 -eq ha −1 in the average farm-based CF (FCF), while it remained stable for the product-based CF (PCF). The CF exhibited considerable variations among counties, ranging from 2324 to 20,768 kg CO 2 -eq ha −1 for FCF and from 0.36 to 3.81 kg CO 2 -eq kg −1 for PCF in 2018. The spatiotemporal heterogeneities of FCF were predominantly influenced by field CH 4 emissions, followed by diesel consumption and soil organic carbon sequestration. Scenario analysis elucidates that the national total GHG emissions from rice production could be significantly reduced through optimized irrigation (48.5%) and straw-based biogas production (18.0%). Moreover, integrating additional strategies (e.g., advanced crop management, optimized fertilization, and biodiesel application) could amplify the overall emission reduction to 76.7% while concurrently boosting the rice yield by 11.8%. Our county-level research provides valuable insights for the formulation of targeted GHG mitigation policies in rice production, thereby advancing the pursuit of carbon-neutral agricultural practices.

show abstract

Section: Resultsmentioning

confidence: 99%

Toward Low-Carbon Rice Production in China: Historical Changes, Driving Factors, and Mitigation Potential

Li,

Lu,

et al. 2024

Environ. Sci. Technol.

View full text Add to dashboard Cite

show abstract

“…Global climate change greatly affects cropping systems, 79 as exemplified by the expansion of rice-planting regions in northern and western areas due to increasing temperature. Notably, this expansion includes the northern shifts of doublerice regions, 59 indicating that future changes in the rice cropping system may lead to prolonged flooding durations in paddies. Our findings offer predictive insights into SOC sequestration within evolving paddy cropping systems.…”

Section: Discussionmentioning

confidence: 99%

Long-Term Flooding Mitigates the Linkage between Paddy Soil Organic Carbon Sink and Climate Factors

Dai,

Zhou,

Zhang

et al. 2024

ACS Earth Space Chem.

View full text Add to dashboard Cite

Understanding how artificial anaerobic environment (flooding) affects paddy soil ecosystem carbon (C) sequestrating has become imperative in the context of global climate change. However, the specific effects under various types of flooding management remain unclear. Here, we reported the results of 682 paired observations from 166 field experiments across typical riceplanting regions in China with a strong environmental gradient, with flooding effects on soil organic carbon (SOC) remaining relatively consistent. Accordingly, we employed nonmetric multidimensional scaling (NMDS) to categorize annual flooding periods into short (3−5 months) and long term (>5 months). The results showed that long-term flooding (48.52 Mg ha −1 ) had a greater SOC sequestration capacity than short-term flooding (30.43 Mg ha −1 ). Furthermore, the application of structural equation modeling (SEM) revealed that long-term flooding significantly mitigated the impacts of mean annual temperature (MAT) and mean annual precipitation (MAP), reducing them by a substantial 7.73-fold compared to short-term flooding. Briefly, longer submerged environments in long-term flooding mitigated the positive effects of MAT and negative effects of MAP, with the standardized total effects (STEs) of 10.7 and 6.2% (P < 0.05), respectively, which were much smaller than those under short-term flooding (21.3 and 67.8%, P < 0.05, respectively). Our findings highlight that an understanding of the relative contribution of anaerobic environment induced by artificially flooding to SOC in soil ecosystems is critical for guiding management efforts aimed at maintaining ecosystem SOC sequestration under global changes.

show abstract

“…Heat accumulation is a driver for crop growth and development, yield potential, water absorption, and stress [7][8]. Given that global climate change can pose significant threats to 2 agriculture, numerous studies have reported changes in crop production potential [9][10], phenological shifts [11], and changes in suitable crop zones [12]. The most common climate indices used to assess these changes are typically sum of active temperature during key crop developmental stages.…”

Section: Introductionmentioning

confidence: 99%

Assessing the Impact of Mulching-Induced Warming on the Zoning of Machine-Picked Cotton Planting Areas Based on Selected Indicators

Dai,

Zhang,

et al. 2024

Preprint

View full text Add to dashboard Cite

The 20th century, global temperatures underwent significant changes, impacting agricultural climate zones worldwide. Xinjiang, China, a key player in machine-picked cotton production, was influenced by various heat-related indicators(sum of active temperature ≥ 10℃、mean temperature in July、climatological growing season length, April-May sum active temperature、Last spring frost, and Defoliator spray time). Using meteorological data from 58 weather stations in Xinjiang, we examined the spatio-temporal trends of these indicators during the period of 1981-2020. Additionally, we considered the effects of climate warming and plastic mulching on the sowing area and zoning area of machine-picked cotton in different suitable zones. Overall, Xinjiang experienced an trend in heat resources, with a pattern of "more in the southern part than the northern part, and more in plains and basins than in mountainous areas." Under climate warming conditions, the sowing area of the most suitable cotton zone and the suitable cotton zone has increased, while the sowing area of the moderately suitable cotton zone and unsuitable cotton zone has decreased. Under the plastic mulching mechanism, a comparison of the zoning area and sowing area from 1991 to 2020 revealed that there was no difference in the zoning area of the most suitable zone compared to the sowing area, while the zoning area of the suitable zone increased by 15.7% (2.15×103km2) compared to the sowing area. The zoning area of the moderately suitable zone decreased by 14.5% (0.26×103km2), and the unsuitable zone decreased by 7.8% (0.17×103km2) compared to their respective sowing areas. These results indicate that climate warming and plastic mulching have increased the cultivable area of machine-picked cotton in Xinjiang, but there are also instances of unreasonable zoning. It is necessary to allocate land resources reasonably based on climatic conditions to ensure the healthy development of the cotton industry in Xinjiang.

show abstract

Changes in planting methods will change the potential distribution of rice in South China under climate warming

Cited by 12 publications

References 68 publications

Toward Low-Carbon Rice Production in China: Historical Changes, Driving Factors, and Mitigation Potential

Toward Low-Carbon Rice Production in China: Historical Changes, Driving Factors, and Mitigation Potential

Long-Term Flooding Mitigates the Linkage between Paddy Soil Organic Carbon Sink and Climate Factors

Assessing the Impact of Mulching-Induced Warming on the Zoning of Machine-Picked Cotton Planting Areas Based on Selected Indicators

Contact Info

Product

Resources

About