Effects of Long-Term Land Use Patterns on Labile Organic Carbon Fractions and Carbon Pool Management Index of Mollisols Humus Layers

Applied Sciences, Год журнала: 2025, Номер 15(3), С. 1006 - 1006

Опубликована: Янв. 21, 2025

Land use patterns significantly influence the quantity and composition of litter in soil humus layers, thereby affecting dynamics organic carbon. However, differences labile carbon fractions sequestration index under different land patterns, as well their impact on storage layers mollisols—without migration loss erosion—remain unclear. Labile is classified into such dissolved carbon, easily oxidized particulate microbial biomass which are identified through chemical extraction methods. This study investigates long-term dynamics, pools, KOS, CPMI mollisols across five treatments: SC (continuous soybean cultivation), MC maize MSR (maize–soybean rotation), GB (grass belt), FB (forest belt). It also selects three depths (0–20 cm, 20–40 40–60 cm) over an 11-year period for analysis. The results indicate that (EOC, POC, DOC, MBC), decrease with depth, while KOS increases. Non-tillage treatments enhance SOC accumulation exhibiting highest content, surpassing GB, MC, SC, by 22.88%, 52.35%, 60.64%, 80.12%, respectively. can fractions, aligning observed trends treatment optimal. Additionally, these increase CPMI, improving stability. To minimize loss, should encourage conversion farmland to grassland forest, recommended optimal strategy protection sustainable development soils long term. approach significant understanding cycle, rationally planning strategies, providing a reference enhancing quality ecosystem sinks.

Язык: Английский

Influence of Cover Crop Root Functional Traits on Sweet Potato Yield and Soil Microbial Communities

Microorganisms, Год журнала: 2025, Номер 13(3), С. 471 - 471

Опубликована: Фев. 20, 2025

The symbiotic relationship between cover crops and soil microorganisms is closely linked to nutrient cycling crop growth within agroecosystems. However, how with different root functional traits influence microbial communities, properties, yields has remained understudied. This study assessed the of hairy vetch (HV) rapeseed (RP), along sweet potato yield, enzyme activity under red dryland conditions. High-throughput sequencing was also employed characterize diversity, composition, network structure bacterial fungal communities. According plant economic spectrum theory our research results on traits, HV can be identified as a resource-acquisitive crop, RP treatment resource-conservative crop. Although did not significantly increase rate reached 8.49%. Resource-conservative were associated increased pH, SOC, TP, which enhanced species diversity boosted populations Chloroflexi Alphaproteobacteria. In contrast, promoted proliferation Gammaproteobacteria. Network analysis indicated that facilitated complexity through intensified intra-community competition. Resource-acquisitive stability Collectively, these findings underscore distinct advantages varying in shaping Appropriate rotations effectively regulate communities hold potential enhance yield.

Язык: Английский

Microbiota-induced asymmetry in coastal methane emission potential under experimental precipitation gradients

Environmental Research, Год журнала: 2024, Номер 266, С. 120601 - 120601

Опубликована: Дек. 11, 2024

Язык: Английский