Impact of past and future climate change on crop yield, nitrate leaching and nitrous oxide emissions associated with potato rotation in temperate climate
Bibliographic record
Abstract
The demand for production of potato is expected to continue to increase in the future; however climate change can impact both its growth and its environmental footprint, and thus its sustainability. In this study, we analyzed the dynamics of crop yield, nitrate (NO 3 ) leaching and nitrous oxide (N 2 O) emissions associated with potato-barley-red clover rotation in a temperate humid climate in Price Edward Island, Canada between 1950 and 2100. We employed the Root Zone Water Quality Model (RZWQM) in conjunction with meteorological forcing data from regional climate model simulations associated with five Global Warming Levels (i.e.; GWL; past climate: 0.2 and 0.4 °C; reference period: 0.85 °C [1995–2014]; future climate: 2.0, 3.0 and 4.0 °C increase in temperature relative to preindustrial conditions). Past climate change had muted impacts, while future change had mixed impacts. Thus, potato tuber yield is projected to be minimally impacted by future climate change (i.e.; −1.72 to 5.03 % change compared to the reference period), barley yield will be negatively (i.e.; −1.91 to −23.9 %) and red clover biomass will be positively (i.e.; 6.26–10.0 %) impacted. NO 3 leaching is projected to increase by 23.5 % and N 2 O emissions by 32.9 % at the rotation level for the same period. Additionally, significant seasonal changes in the dynamics and magnitude of these processes were observed. The potential impacts identified suggest that substantial efforts should be undertaken for developing adaptation strategies for maintaining agricultural production and minimizing environmental losses associated with this rotation, and with potato cropping systems in general. • Past climate change had muted impacts, while future changes had mixed impacts. • Potato tuber yield will be minimally impacted by future climate changes. • Rotation NO 3 leaching and N 2 O emissions will increase significantly. • Increased efforts to be made toward adapting the potato rotation to climate change.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".