Diversity of Arbuscular Mycorrhizal Fungi Increases with Tree Age in Karstic Rocky Desertification Areas of Southwestern China DOI Open Access
Ying Li, Zhongfeng Zhang,

Shuhui Tan

et al.

Forests, Journal Year: 2024, Volume and Issue: 16(1), P. 24 - 24

Published: Dec. 26, 2024

The diversity of arbuscular mycorrhizal fungi (AMF) is a crucial indicator for determining the productivity forest ecosystems and assessing degraded areas. At present, effect tree age vegetation restoration strategies on AMF in karstic rocky desertification areas remains unclear. This study investigated abundance soils planted with Delavaya toxocarpa Franch. 18, 11, 4 years area southwestern China. Additionally, it explored community composition an 18-year-old D. plantation, secondary naturally restored since 2005, abandoned land no human intervention. High-throughput sequencing revealed that mean Chao1 richness indices increased age, as indicated by highest α-diversity plantations. various resulted significant differences evenness indices. Although (p = 0.33) were found between different strategies, index showed decreasing trend from plantation to then land. Overall, soil organic carbon (SOC), total nitrogen (TN), available phosphorus (AP) significantly influence diversity. TN, AP, hydrolysable (HN), urease activity (URE) shape composition. These properties varied strategies. Our findings point good recovery results artificial afforestation process accelerates enhances mutually beneficial relationship compared natural restoration. However, selected this only represents stands before mature forests, microbial structure karst after over-mature remain be studied.

Language: Английский

Ammonia‐oxidizing bacteria rather than ammonia‐oxidizing archaea dominates soil nitrification during vegetation restoration in karst areas DOI
Mingming Sun, Dan Xiao, Wei Zhang

et al.

Land Degradation and Development, Journal Year: 2024, Volume and Issue: 35(14), P. 4304 - 4313

Published: July 4, 2024

Abstract Soil nitrification, driven by ammonia‐oxidizing archaea (AOA) and bacteria (AOB), is a crucial process in maintaining the soil nitrogen (N) balance. However, influence of AOA AOB on gross nitrification rates (GNR) response to vegetation restoration remains unclear, particularly karst regions. In this study, we investigated GNR abundance, diversity, community composition across after restoration. Four land use types were examined: plantation forest (PF), forage grass (FG), combination cropland (CR, control). ammonium N () was higher compared that cropland, whereas nitrate exhibited opposite trend. reduced 55.4%–90.3% restorations cropland. The Chao1, Shannon index lower respectively. abundance diversity than those but unaffected vegetative Furthermore, more sensitive community. Specifically, taxa belonging genera Nitrosospira Nitrosovibrio decreased efforts. addition, nutrients availability (e.g., , phosphorus) index) main factors driving GNR. This study highlights importance during emphasizes necessity optimize management ecosystems.

Language: Английский

Citations

1
Diversity of Arbuscular Mycorrhizal Fungi Increases with Tree Age in Karstic Rocky Desertification Areas of Southwestern China DOI Open Access
Ying Li, Zhongfeng Zhang,

Shuhui Tan

et al.

Forests, Journal Year: 2024, Volume and Issue: 16(1), P. 24 - 24

Published: Dec. 26, 2024

The diversity of arbuscular mycorrhizal fungi (AMF) is a crucial indicator for determining the productivity forest ecosystems and assessing degraded areas. At present, effect tree age vegetation restoration strategies on AMF in karstic rocky desertification areas remains unclear. This study investigated abundance soils planted with Delavaya toxocarpa Franch. 18, 11, 4 years area southwestern China. Additionally, it explored community composition an 18-year-old D. plantation, secondary naturally restored since 2005, abandoned land no human intervention. High-throughput sequencing revealed that mean Chao1 richness indices increased age, as indicated by highest α-diversity plantations. various resulted significant differences evenness indices. Although (p = 0.33) were found between different strategies, index showed decreasing trend from plantation to then land. Overall, soil organic carbon (SOC), total nitrogen (TN), available phosphorus (AP) significantly influence diversity. TN, AP, hydrolysable (HN), urease activity (URE) shape composition. These properties varied strategies. Our findings point good recovery results artificial afforestation process accelerates enhances mutually beneficial relationship compared natural restoration. However, selected this only represents stands before mature forests, microbial structure karst after over-mature remain be studied.

Language: Английский

Citations

0