Effects of Woodland Conversion to Tea Plantations and Tea Planting Age on Soil Organic Carbon Accrual in Subtropical China DOI Open Access

Shun Zou,

Chumin Huang,

Tu Feng

et al.

Forests, Journal Year: 2024, Volume and Issue: 15(11), P. 1862 - 1862

Published: Oct. 24, 2024

Tea (Camellia sinensis (L.) Kuntze) plantations have been rapidly expanding in recent years developing countries, but there is a lack of knowledge about the effects woodland conversion to tea and plantation aging on soil organic carbon (SOC) accumulation subtropical regions, which may be critical issue for accurately estimating regional C balance planting areas. Thus, this study, we selected four with ages ranging from 5 23 years, along an adjacent mature pine forest (PF, more than 60 age), investigate stand age SOC. Lignin phenols amino sugars were used distinguish contributions plant-derived microbial-derived The results showed that when PF converted plantation, 54.12% SOC content topsoil lost, reductions 84.77% 10.23% C; however, slight increase deep-layer soil. only has negative effect topsoil. Additionally, plant aboveground biomass, ratio nitrogen, total nitrogen concentration, clay–silt are key environmental variables influencing accrual, explaining 59.8% variance. thus implicated quick response decreasing inputs land do not accumulate increasing under current management practices. Generally, attention should focused loss at scale, effective practices can applied enhance accrual plantations.

Language: Английский

Biochar and Straw Amendments over a Decade Divergently Alter Soil Organic Carbon Accumulation Pathways DOI Creative Commons

Kunjia Lei,

Wenxia Dai,

Jing Wang

et al.

Agronomy, Journal Year: 2024, Volume and Issue: 14(9), P. 2176 - 2176

Published: Sept. 23, 2024

Exogenous organic carbon (C) inputs and their subsequent microbial mineral transformation affect the accumulation process of soil C (SOC) pool. Nevertheless, knowledge gaps exist on how different long-term forms crop straw incorporation (direct return or pyrolyzed to biochar) modifies SOC composition stabilization. This study investigated, in a 13-year field experiment, functional fractions protection by iron (Fe) oxide minerals soils amended with biochar. Under equal input, was enhanced both direct (by 43%) biochar 85%) compared non-amended conventional fertilization, but pathways. Biochar had greater efficiency increasing through stable exogenous inhibition respiration. Moreover, biochar-amended contained 5.0-fold SOCs particulate matter (POM) 1.2-fold more mineral-associated (MAOM) relative conventionally fertilized soils. Comparatively, although magnitude effect smaller, straw-derived OC preserved preferentially most MAOM. Straw increased nutrient content stimulated activity, resulting increases necromass POM MAOM 117% 43%, respectively) 72% 18%). promoted poorly crystalline (Feo) organically complexed (Fep) Fe oxides accumulation, were significantly positively correlated SOC. The results address decadal-scale effects application formation pool soil, understanding causal mechanisms can allow practices maximize content. These are great implications for better predicting accurately controlling response pools agroecosystems future changes disturbances maintaining regional balance.

Language: Английский

Citations

5
Contrasting contributions of microbial and plant-derived C to soil carbon in desertified grassland restoration DOI
Yuqiang Li,

Xiaoming Mou,

Yuqing Zhang

et al.

Agriculture Ecosystems & Environment, Journal Year: 2025, Volume and Issue: 385, P. 109579 - 109579

Published: Feb. 20, 2025

Language: Английский

Citations

0
Coupled iron oxides and microbial-mediated soil organic carbon stabilization across tea plantation chronosequences DOI
Quan Tang, Wei Li, Jing Wang

et al.

Soil and Tillage Research, Journal Year: 2024, Volume and Issue: 247, P. 106382 - 106382

Published: Nov. 30, 2024

Language: Английский

Citations

1
Effects of Woodland Conversion to Tea Plantations and Tea Planting Age on Soil Organic Carbon Accrual in Subtropical China DOI Open Access

Shun Zou,

Chumin Huang,

Tu Feng

et al.

Forests, Journal Year: 2024, Volume and Issue: 15(11), P. 1862 - 1862

Published: Oct. 24, 2024

Tea (Camellia sinensis (L.) Kuntze) plantations have been rapidly expanding in recent years developing countries, but there is a lack of knowledge about the effects woodland conversion to tea and plantation aging on soil organic carbon (SOC) accumulation subtropical regions, which may be critical issue for accurately estimating regional C balance planting areas. Thus, this study, we selected four with ages ranging from 5 23 years, along an adjacent mature pine forest (PF, more than 60 age), investigate stand age SOC. Lignin phenols amino sugars were used distinguish contributions plant-derived microbial-derived The results showed that when PF converted plantation, 54.12% SOC content topsoil lost, reductions 84.77% 10.23% C; however, slight increase deep-layer soil. only has negative effect topsoil. Additionally, plant aboveground biomass, ratio nitrogen, total nitrogen concentration, clay–silt are key environmental variables influencing accrual, explaining 59.8% variance. thus implicated quick response decreasing inputs land do not accumulate increasing under current management practices. Generally, attention should focused loss at scale, effective practices can applied enhance accrual plantations.

Language: Английский

Citations

0