Effects of vegetation restoration in karst areas on soil nitrogen mineralisation DOI Creative Commons
Jianghong Wu,

Xianghuan Gong,

Yingge Shu

et al.

PeerJ, Journal Year: 2024, Volume and Issue: 12, P. e18582 - e18582

Published: Dec. 20, 2024

Background Nitrogen mineralization plays a critical role in the ecosystem cycle, significantly influencing both function and nitrogen biogeochemical cycle. Therefore, it is essential to investigate evolutionary characteristics of soil during karst vegetation restoration better understand its importance terrestrial Methods This study analyzed from various stages growth, including 40-year-old woodland, 20-year-old shrubland, 15-year-old 5-year-old grassland, nearby cropland. The aerobic incubation technique was used for 35 days evaluate N their correlation with environmental factors. focused on examining variations rate (NMR), nitrification (NR), net (AR), NH 4 + -N NO 3 - levels. Results Nitrate nitrogen, primary form inorganic increased by 19.38% 0–40 cm layer shrubland compared cultivated land. Soil levels varied period, decreasing 14 th day rising again 21 st day. 3− total initially increased, then declined, eventually stabilized, reaching highest During restoration, NR NMR decreased gradually increasing time. 15-year shrub, 20-year 40-year woodland showed potential increase NMR. Furthermore, shrub also AR. Mantel test analysis indicated positive correlations among (TN), phosphorus (TP), potassium (TK), silicon (Si), AR, NR, While available (AP) demonstrated TN, TP, TK, Si were found be positively correlated NMR, whereas AP negative It worth noting that had greatest effect while bulk density (BD) affected NR. ammonium (AN) organic carbon (SOC) identified as contributors provides theoretical basis comprehending influence restoration.

Language: Английский

Vegetation restoration enhancing soil carbon sequestration in karst rocky desertification ecosystems: A meta-analysis DOI
Wei Zheng,

Xiaobin Guo,

Ping Zhou

et al.

Journal of Environmental Management, Journal Year: 2024, Volume and Issue: 370, P. 122530 - 122530

Published: Sept. 17, 2024

Language: Английский

Citations

9
Agricultural cultivation duration affects soil inorganic N turnover and supply capacity: Evidence in subtropical karst regions DOI
Guan Wang,

Zihong Zhu,

Jianhua Cao

et al.

Agriculture Ecosystems & Environment, Journal Year: 2025, Volume and Issue: 381, P. 109462 - 109462

Published: Jan. 8, 2025

Language: Английский

Citations

0
Towards a Mechanistic Understanding of Legume Functioning in Natural Restoration of Degraded Ecosystem: Legume‐Specific Impacts on Nitrogen Transformation Processes DOI
Lijun Liu, Qilin Zhu,

Yunxing Wan

et al.

Plant Cell & Environment, Journal Year: 2025, Volume and Issue: unknown

Published: April 15, 2025

ABSTRACT Legumes have important functions in degraded ecosystems as they can mediate atmospheric nitrogen (N) inputs and increase soil N availability. However, it remains unclear whether legumes affect availability only through biological fixation or stimulating microbial transformations. In this study, nine native four non‐legumes were collected following a 9‐year natural vegetation restoration experiment karst rocky desertification area. Leaf N/phosphorus (P) ratios various pool compositions analyzed gross transformation rates determined by 15 tracing techniques. exhibited higher leaf δ values increased contents of total N, biomass inorganic compared to non‒legumes. Legume content N/P ratio (26.7 g kg ‒1 20.7) significantly exceeded those non‒legumes (14.2 14.5). Our results indicate that decreased plant limitation after 9 years succession, with effects varying between species related processes. Species low high organic mineralization ( M Norg ) ammonium oxidation nitrate O NH4 ), both which supply (especially nitrate). This effect was more pronounced rhizosphere than bulk soil. positively correlated p < 0.01) carbon, water holding capacity, calcium well N:P ratios, indicating improve quality supply, thereby alleviating limitation. highlight the importance cycling availability, is often limiting factor for ecosystems.

Language: Английский

Citations

0
Afforestation improves soil organic carbon and total nitrogen stocks mainly through increasing > 2 mm aggregate fractions and stimulating carbon and nitrogen transformations within aggregates in subtropical karst region DOI
Lijun Liu, Qilin Zhu,

Yunxing Wan

et al.

CATENA, Journal Year: 2024, Volume and Issue: 243, P. 108220 - 108220

Published: June 29, 2024

Language: Английский

Citations

2
The Impact of Artificial Afforestation on the Soil Microbial Community and Function in Desertified Areas of NW China DOI Open Access
Li Yan,

Lamei Jiang,

Hongfei Yuan

et al.

Forests, Journal Year: 2024, Volume and Issue: 15(7), P. 1140 - 1140

Published: June 29, 2024

Afforestation is a widely used method of controlling desertification globally as it significantly impacts the soil quality, microbial community structure, and function. Investigating effects various artificial vegetation restoration models on communities crucial in understanding mechanisms involved combating desertification. However, research this topic arid, desertified regions limited. In study, we collected samples from two types forests (single species mixed species) bare desert soils areas Northwest China to explore impact afforestation nutrients, composition, network relationships, carbohydrate degradation abilities using metagenomic sequencing techniques. Our findings indicate that enhances moisture, total carbon, available phosphorus, nitrogen levels. The under mixed-species exhibited higher levels than single-species forests. Following afforestation, populations Pseudomonadota, Acidobacteriota, Cyanobacteria increased significantly, whereas Actinomycetota decreased markedly. forests, Pseudomonadota Bacillota were enriched, Chloroflexota, Planctomycetota, Acidobacteriota more prevalent plantations. increases complexity stability networks. metabolic activity, particularly increasing abundance carbon functional genes forest compared soils. Mixed-species plantations outperform enhancing metabolism, amino acid biodegradation metabolism xenobiotics. associated with starch, cellulose, hemicellulose, chitin, pectin was greater study shows effectively improves communities, bolsters cycle arid prone reciprocal relationship between microorganisms plants may serve an intrinsic mechanism by which controls

Language: Английский

Citations

2
The Critical Role of Soil Ecological Stoichiometric Ratios: How Does Reforestation Improve Soil Nitrogen and Phosphorus Availability? DOI Creative Commons
Zhixuan Chen,

Xia Xu,

Yongli Wen

et al.

Plants, Journal Year: 2024, Volume and Issue: 13(16), P. 2320 - 2320

Published: Aug. 20, 2024

The ecological stoichiometric characteristics of soil elements have greatly enhanced our understanding the circulation nutrients. However, there is limited knowledge regarding alteration carbon, nitrogen, and phosphorus ratios in deep after afforestation. To examine variations with different vegetation types, restoration times, depths, we collected samples from grassland,

Language: Английский

Citations

2
Effects of vegetation restoration in karst areas on soil nitrogen mineralisation DOI Creative Commons
Jianghong Wu,

Xianghuan Gong,

Yingge Shu

et al.

PeerJ, Journal Year: 2024, Volume and Issue: 12, P. e18582 - e18582

Published: Dec. 20, 2024

Background Nitrogen mineralization plays a critical role in the ecosystem cycle, significantly influencing both function and nitrogen biogeochemical cycle. Therefore, it is essential to investigate evolutionary characteristics of soil during karst vegetation restoration better understand its importance terrestrial Methods This study analyzed from various stages growth, including 40-year-old woodland, 20-year-old shrubland, 15-year-old 5-year-old grassland, nearby cropland. The aerobic incubation technique was used for 35 days evaluate N their correlation with environmental factors. focused on examining variations rate (NMR), nitrification (NR), net (AR), NH 4 + -N NO 3 - levels. Results Nitrate nitrogen, primary form inorganic increased by 19.38% 0–40 cm layer shrubland compared cultivated land. Soil levels varied period, decreasing 14 th day rising again 21 st day. 3− total initially increased, then declined, eventually stabilized, reaching highest During restoration, NR NMR decreased gradually increasing time. 15-year shrub, 20-year 40-year woodland showed potential increase NMR. Furthermore, shrub also AR. Mantel test analysis indicated positive correlations among (TN), phosphorus (TP), potassium (TK), silicon (Si), AR, NR, While available (AP) demonstrated TN, TP, TK, Si were found be positively correlated NMR, whereas AP negative It worth noting that had greatest effect while bulk density (BD) affected NR. ammonium (AN) organic carbon (SOC) identified as contributors provides theoretical basis comprehending influence restoration.

Language: Английский

Citations

0