Effect of Biochar on Soil Microbial Communities, Nutrient Availability, and Greenhouse Gases in Short Rotation Coppice Systems of Central Alberta
Pourquoi ce travail est dans la base
Une base qui oublie comment elle a trouvé un travail ne peut pas être vérifiée. Voici les voies qui ont admis celui-ci.
Notice bibliographique
Résumé
Short rotation coppice (SRC) systems using willow (Salix spp.) grown on marginal soil, amended with biochar may represent a promising source of renewable green energy for rural communities of Alberta. The Ohaton Wood Energy project, an agroforestry site located in Camrose County, is one of several ongoing SRC projects in Alberta. This project evaluated the effect of biochar on microbial communities, nutrient availability, and greenhouse gases (GHG) in Solonetzic soils dedicated to agroforestry purposes. The study used both lab incubation and field plots to examine the effect of biochar. In the lab incubation, straw and willow biochars were applied to low and high EC soils. The application rates of biochar were 0, 1, 2.5, 5, and 10% (w/w). Chloroform fumigation extraction and alkali trap methods were used to assess soil microbial biomass and activity. Microbial biomass carbon (MBC) and nitrogen (MBN) increased in the presence of biochar in low EC soil. In high EC soil, the metabolic quotient increased, while MBC was reduced. Nitrate (NO3-) availability was reduced with biochar addition. In the field study, willow and conifer biochars were applied at 1 and 2.5% (w/w) application rates, to high and low EC and waste water irrigated and non-irrigated zones. The metabolic quotient increased by 177% with addition of conifer biochar at 2.5% rate in irrigated soil. MBC and MBN didn’t change drastically in response to biochar additions. Phospholipid fatty-acid (PLFA) analysis and community level physiological profiling (CLPP) were used to examine soil microbial structure and function. Non-metric multidimensional scaling (NMS) was used to distinguish differences between these microbial profiles. Biochar didn’t alter PLFA structure in any of treated soils compared to control, but conifer 2.5% changed CLPP in both high and low EC soils. These results indicate that microbial function can change in a short period of time with addition of biochar, but microbial structure and biomass may need more time to shift. Plant root simulator probes were applied in-situ to measure soil nutrient bioavailability. NMS was also applied to compare nutrient profiles. The nutrient profiles of conifer 2.5% and willow 1% were significantly different from the control in non-irrigated high EC zone. Photoacoustic multi-gas analyzer was connected to static chambers to measure CO2 and N2O emissions from soil. Biochar decreased gas emissions from non-irrigated high EC plots in the first 3 weeks. Establishing a strong link between GHG emissions, soil microbial processes, and nutrient profiles as indicators of ecosystem functions needs further research.
Récupéré en direct depuis OpenAlex et désinversé. Les résumés ne sont pas conservés dans cette base de données : les index inversés représentent 8,6 Go des 9,3 Go de texte de la base, et le serveur dispose de 13 Go libres.
Prédiction distillée sur la base complète
Imitation des enseignantsNi prévalence calibrée, ni vérité terrain. Validation humaine à venir. Apprise à partir de 10 348 étiquettes directes de Codex et de 10 348 étiquettes directes de Gemma. Le mode candidate est l'union des têtes enseignantes seuillées; le consensus est leur intersection. Ces sorties portent le statut machine_predicted_unvalidated et ne sont ni des étiquettes humaines ni des étiquettes directes de modèles de pointe.
Scores Codex et Gemma par catégorie
| Catégorie | Codex | Gemma |
|---|---|---|
| Métarecherche | 0,000 | 0,000 |
| Méta-épidémiologie (sens strict) | 0,000 | 0,000 |
| Méta-épidémiologie (sens large) | 0,000 | 0,000 |
| Bibliométrie | 0,000 | 0,000 |
| Études des sciences et des technologies | 0,000 | 0,000 |
| Communication savante | 0,000 | 0,000 |
| Science ouverte | 0,000 | 0,000 |
| Intégrité de la recherche | 0,000 | 0,000 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,000 | 0,000 |
Scores machine (provisoires)
Les deux têtes enseignantes du modèle étudiant, lues sur ce travail. Un score ordonne la base pour la relecture; il n'affirme jamais une catégorie, et le statut de validation accompagne chaque rangée tel quel.
Scores de référence d'un modèle non mature (critères de maturité non atteints, 7 itérations). Un score ordonne; il n'affirme jamais une catégorie.
score_only:v0-immature-baseline · tel quel depuis la passe de notation : score_only signifie que le nombre peut ordonner les travaux, et qu'aucune étiquette de catégorie n'en découle