Effects of five alien Compositae plants on the growth of the microbial community of the rh-i zosphere and the soil’s enzyme activity
Bibliographic record
Abstract
The paper is engaged in a comparative study of the effects of five alien Compositae plants on the growth of the microbial community of the rhizosphere and the soil’s enzyme activity. Taking the soil microbial quantity in the rhizosphere and the enzyme activity as influential factors, we have accomplished a comparative study of five alien Compositae plants ofErigeron Canadensis, Bidens pilosa, Galinsoga parviflora, Crassocephalum crepidioidesandAster subulatus(imported from Canada) in hoping to find the effects on the soil ecological env-i ronment as well as the interactions between the alien plants and the soil ecosystem on the brown soils. The results of our comparison have shown thatthe volume and kinds of bacteria tend to have dominant effect, followed by actinomycetes, with fungi being the least. Moreover, the volume of bacteria and fungi in the rhizosphere in the five alien Compositae plants turns to be largerthan that the control group. The number of fungi in rhzosphere ofErigeron Canadensisproves significantly higher than the control group (p0.05), which indicates the fungi in rhizosphere of this alien plantwere simulated dramatically by the root exudates. However, there was no difference in the number of actinomycetes. The urease inErigeron Canadensis, Bidenspilosa, Galinsoga parvifloraandCrassocephalum crepidioidesproves to be much more active than the control. In addition, the ability of n-i trogen supply tends to be varied in rhizosphere,while the activity of soil invertase inErigeron Canadensis, Bidens pilosa, Galinsoga parvifloraandCrassocephalum crepidioidesturns out to be greater as compared with the control group. On the other hand, the data resulted from our research indicate no difference in the activities of cellulase, catalase and nitrate reductase. Therefore, the soil enzyme activities (urease, invertase) and the soil microbial quantity can be found to reflect the extent of alien compositae plants in the soil to a great extent. By analyzing the comprehensive data and the influence of the soil fertility, the findings suggest that in the abandoned yellow soil, the growth ofBidenspilosa, Erigeron CanadensisandGalinsoga parvifloracan be found to have effects on the soil’s nutrient supply so as forthemto better adapt to the local soil conditions, whereas SQI is expected to bring more ecological profit.
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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 | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| 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 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".