REGULATION OF THE MINERALIZATION AND HUMUFICATION PROCESSES IN NITISOLS FERRALIC AND HUMIC CAMBISOLS BY INTEGRATING 14C-MODIFIED TEA (Tea Sinensis) BIOMASS DOI

Merab Mgeladze,

Antaz Kikava,

Besik Kalandadze

et al.

International Multidisciplinary Scientific GeoConference SGEM ..., Journal Year: 2024, Volume and Issue: 24, P. 221 - 228

Published: Nov. 15, 2024

This work delves into the process of phenolic oxidation products rdistribution in Nitisols Ferralic and Humic Cambisols, which were modified by (14C) introduced tea biomass. Metabolites derived from biomass found to interact with humic fulvic acids form covalent bonds them. The study quantitative aspects inclusion substances chemical composition reveals that incorporate a significantly greater amount radioactive tracer compared acids. By applying formula us (DCaCO3 + MgCO3 = ??,???? ????/??,???????) it becomes feasible determine soil microliming dosage required expedite processes mineralization humification plant manure other residues rich polyphenolic substances. Furthermore, is recommended apply manganese-based microfertilizers prior pruning bushes. These agrochemical measures are crucial optimizing substances, neutralizing their toxic effects, enhancing intensity process, ultimately increasing fertility.

Language: Английский

Microplastics Can Inhibit Organic Carbon Mineralization by Influencing Soil Aggregate Distribution and Microbial Community Structure in Cultivated Soil: Evidence from a One-Year Pot Experiment DOI Creative Commons
Zonghai Chen, Quan Wan,

Pengyu Zhou

et al.

Agronomy, Journal Year: 2024, Volume and Issue: 14(9), P. 2114 - 2114

Published: Sept. 17, 2024

Microplastics (MPs) pollution has become a global problem, potentially affecting soil carbon cycling and structure stability in agricultural systems. However, the effects of MPs on organic fractions/transformation aggregate remain unknown. Thus, combination one-year pot short-term mineralized incubation experiments that involved reference (CK, with no MPs), different concentrations (0.1, 1, 2 w/w % polyethylene (PE)), types (0.1 PE, polypropylene (PP), polyvinyl chloride (PVC)) were carried out to investigate mineralization after one year adding MPs. The results showed size distribution partial aggregates varied significantly as affected by MP concentration type (p ˂ 0.05). Compared 0.1% significant increases MWD (mean weight diameter) GMD (geometric mean 2% PE 27.22% 32.73%, respectively, detected. In addition, high (>1%) decreased dissolved (DOC) 0.05), whereas they increased stable fractions including particulate (POC) mineral-bound (MOC) 0.01). Meanwhile, compared CK, both doses rate (SOCMR) cumulative amount (CM) 0.001). Moreover, total PLFA (phospholipid fatty acid) 261.9–438.8% 0.01), pH dominant factors SOCMR influencing pH, TN, macroaggregate (R>0.25) content microbial community composition. This study provided evidence feedback C dynamic cultivated South China.

Language: Английский

Citations

4

Organic carbon mineralization and its temperature response of soil organic matter fractions in the Yellow River estuary wetland DOI
Guowei Lü, Jisong Yang, Qixuan Wang

et al.

Applied Soil Ecology, Journal Year: 2025, Volume and Issue: 210, P. 106109 - 106109

Published: April 16, 2025

Language: Английский

Citations

0

Leaf adaptation strategy of non-tree plants altered by community structure implies vegetation degradation risk in alpine rocky desertification areas DOI Creative Commons

Jialiang Shi,

Jin Tan, Shu‐Fang Li

et al.

Scientific Reports, Journal Year: 2025, Volume and Issue: 15(1)

Published: March 12, 2025

In alpine rocky desertification areas, environmental stress poses challenges to vegetation restoration and protection. Merely observing the changes in specific leaf area driven by factors may overlook risk of non-tree degradation. The resource allocation strategies plants need be focused on. areas Jinsha River Basin, three types were investigated. traits, coverage, species diversity plants, soil total nitrogen, rock bareness degree measurement. An increase altitude led a decrease coverage an diversity. grasslands with exceeded 35% degree, intensified competition pressure, resulting area. forests less than 20% shrubs have become homogeneous, but But due stress, different favored dry weight (allometric index < 1.0). nitrogen alleviated causing resources allocated both ≁1.0). However, it enhanced above-ground competitiveness few dominant species, squeezing out living space auxiliary degradation increased. Species similar can strategies. By combining strategies, development under accurately revealed.

Language: Английский

Citations

0

Successional transition from broadleaf to bamboo forests promotes fungal communities and soil carbon mineralization following the altered litterfall quality DOI
Qiumei Teng, Tao Fang, Qianqian Zhang

et al.

Applied Soil Ecology, Journal Year: 2025, Volume and Issue: 209, P. 106006 - 106006

Published: March 12, 2025

Language: Английский

Citations

0

Short‐term effects of restoration on soil biological properties in degraded lands of the Brazilian semiarid region DOI

Janaira Rocha Campos,

Rhaiana Oliveira de Aviz,

Davila Esmelinda Oliveira Silva

et al.

Restoration Ecology, Journal Year: 2025, Volume and Issue: unknown

Published: April 4, 2025

Soil biological properties are sensitive indicators of land use changes. In particular, they have been widely used to assess the effects degradation and restoration. this study, we evaluated soil in degraded short‐term (<5 years) restored lands Brazilian semiarid region determine whether restoration efforts can enhance these properties. This study assessed three scenarios: native vegetation, land, land. Land resulted from deforestation, which exposed erosion, while involved constructing successive stone dams prevent increase moisture, reintroduce species. were during dry rainy seasons 2022 2023. We microbial biomass C, respiration, respiratory quotients, enzymatic activity as key generally higher season than season. Microbial C was highest with no significant differences between 2022. However, under showed an also areas acid phosphatase peaking Temporal stability varied for β‐glucosidase, urease activities, vegetation showing greater respiration β‐glucosidase. demonstrates that had a limited impact on improving lands.

Language: Английский

Citations

0

Nutrient Additions Regulate Height Growth Rate but Not Biomass Growth Rate of Alpine Plants Through the Contrasting Effect of Total and Available Nitrogen DOI Creative Commons
Renfei Feng, Wang Shu,

Jikui Ma

et al.

Plants, Journal Year: 2025, Volume and Issue: 14(7), P. 1143 - 1143

Published: April 6, 2025

Plant growth, a fundamental biological process that underpins terrestrial ecosystem function, is susceptible to nutrient availability. Despite extensive research on lowland ecosystems, the responses of alpine plant growth addition remain poorly understood, particularly given heightened sensitivity ecosystems global change. To investigate effects nitrogen (N) and phosphorus (P) additions rates plants underlying mechanisms how these influence rates, we conducted an experiment in grassland Qinghai-Tibet Plateau, targeting 14 common species. Growth were measured using biomass height, with height soil physicochemical properties recorded biweekly during growing season. We assessed their seasonal dynamics, relationships properties. Results showed combined nitrogen-phosphorus significantly increased relative rate based (RGRH). In contrast, had no significant effect (RGRB). RGRH decreased from June early July August, exhibiting species-specific additions. Additionally, was influenced by interaction additions, species, dynamics (p < 0.05). Soil available N, P, moisture positively correlated 0.05), while temperature (ST), total (TN), organic carbon (SOC) exhibited negative correlations Nutrient altered hierarchy, as well direct indirect factors RGRH, revealing opposing regulatory nitrogen. These findings highlight critical roles phosphorus, suggesting potential limiting factor for this region. This study offers comprehensive analysis affect clarifies sensitive ecosystems.

Language: Английский

Citations

0

Effects of Biochar on Soil Organic Carbon in Relation to Soil Nutrient Contents, Climate Zones and Cropping Systems: A Chinese Meta-Analysis DOI Creative Commons

Longjia Tian,

Guangcheng Shao, Yang Gao

et al.

Land, Journal Year: 2024, Volume and Issue: 13(10), P. 1608 - 1608

Published: Oct. 3, 2024

Biochar application is an effective way to improve soil organic carbon (SOC) content and ensure food security. However, there were differences in SOC following biochar under different conditions. We collected 637 paired comparisons from 101 articles determine the following: (1) average effect of on (2) response nutrient contents, climate zones cropping systems application. The results showed that available phosphorus (P) potassium (K) reached highest level category <10 mg kg−1 >150 kg−1, respectively. Soil total P subgroups achieved maximum increase intermediate category. Cw zone (temperate, without dry season) obtained content. Compared with plough tillage, rotary tillage presented significantly higher Therefore, low K moderate N more increasing Furthermore, a random forest algorithm contents most important variables. This study provided scientific basis for sequestration improving fertility.

Language: Английский

Citations

2

Effect of Brassinolide on Stoichiometric Stability Characteristics of Tall Fescue under Drought Stress in Ecological Restoration DOI Open Access

Roujia Kang,

Mingyi Li, Shiwei Guo

et al.

Sustainability, Journal Year: 2024, Volume and Issue: 16(14), P. 5942 - 5942

Published: July 12, 2024

In order to investigate the effects of brassinolide (BR) on ecological stoichiometric characteristics and internal stability plants in slope protection under different drought conditions, biomass, proline content, nutrient tall fescue (Festuca arundinacea) three stress periods were analyzed by weighing water control method, with degrees (75% ± 5%), mild (55% 5%) severe (35% four BR concentrations (0 mg/L, 0.05 0.2 mg/L 0.5 mg/L). The results showed that resulted a decrease plant biomass there differences carbon, nitrogen phosphorus contents their ratios organs. Spraying suitable concentration could alleviate loss promote accumulation fescue. Under normal spraying conditions BR, it is most for high sensitivity exogenous input, underground part increased clearly. propitious synthesis enhances resistance plants. According characteristics, can improve utilization efficiency certain extent, ratio show main factor limiting growth vegetation concrete restoration system, which supplement accelerate process restoration. application fescue, adjust distribution strategy stability, adverse This study provides new ideas methods reconstruction arid areas.

Language: Английский

Citations

1

Key microbes in wheat maize rotation present better promoting wheat yield effect in a variety of crop rotation systems DOI
Lin Ma, Jiajia Zhang, Heng Li

et al.

Agriculture Ecosystems & Environment, Journal Year: 2024, Volume and Issue: 379, P. 109370 - 109370

Published: Nov. 12, 2024

Language: Английский

Citations

1

Long-term nitrogen application decreased mineral-associated organic carbon while increasing particulate organic carbon in purple soil in southwest China DOI

Jun Xie,

Yuanxue Chen,

Rong Huang

et al.

Journal of Environmental Management, Journal Year: 2024, Volume and Issue: 373, P. 123455 - 123455

Published: Nov. 26, 2024

Language: Английский

Citations

0