Nitrous oxide emissions from three temperate forest types in the Qinling Mountains, China
Bibliographic record
Abstract
To understand soil N 2 O fluxes from temperate forests in a climate-sensitive transitional zone, N 2 O emissions from three temperate forest types ( Pinus tabulaeformis , PTT; Pinus armandii , PAT; and Quercus aliena var. acuteserrata , QAT) were monitored using the static closed-chamber method from June 2013 to May 2015 in the Huoditang Forest region of the Qinling Mountains, China. The results showed that these three forest types acted as N 2 O sources, releasing a mean combined level of 1.35 ± 0.56 kg N 2 O ha −1 a −1 , ranging from 0.98 ± 0.37 kg N 2 O ha −1 a −1 in PAT to 1.67 ± 0.41 kg N 2 O ha −1 a −1 in QAT. N 2 O emission fluctuated seasonally, with highest levels during the summer for all three forest types. N 2 O flux had a significantly positive correlation with soil temperature at a depth of 5 cm or in the water-filled pore space, where the correlation was stronger for temperature than for the water-filled pore space. N 2 O flux was positively correlated with available soil nitrogen in QAT and PAT. Our results indicate that N 2 O flux is mainly controlled by soil temperature in the temperate forest in the Qinling Mountains.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| 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 source (direct Gemma or distilled Codex), 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".