Effects of N-fixing tree species (<i>Alnus sibirica</i>) on amino sugars in the soils of a <i>Larix kaempferi</i> plantation in eastern Liaoning Province, China

Yanli, 井艳丽 Jing; Shirong, 刘世荣 Liu; You, 殷有 Yin; Jiang, Dun; Yuanyue, 刘源跃 Liu; Pinchu, 阎品初 Yan; Kankan, 苟堪堪 Gou

doi:10.5846/stxb201705150897

Cited by 2 publications

(6 citation statements)

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“…Soil N is usually a limiting nutrient, its availability directly affects the productivity of forest ecosystems [9]. An appealing option to increase long-term soil N availability is mixed-species plantations, which combine N 2 -fixing trees with other highly productive tree species (e.g., Eucalyptus species), alleviating the soil-plant N limitation and increasing overall biomass production [10]. According to one study, the addition of N 2 -fixing trees to Eucalyptus plantations has been found to alter the component of microbial community and boost biomass [11].…”

Section: Al Found That Ees Wasmentioning

confidence: 99%

N2-Fixing Tree Species Help to Alleviate C- and P-Limitation in Both Rhizosphere and Non-Rhizosphere Soils in the Eucalyptus Plantations of Subtropical China

Li,

Huang,

You

et al. 2023

Forests

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The extracellular enzyme activity (EEA) and enzymatic stoichiometry (EES) of soil are useful indicators of shifts in soil nutrition and microbial resource requirements. Nevertheless, it is uncertain how the limitation of soil microbial nutrients is altered by a Eucalyptus plantation mixed with a N2-fixing tree species. Our study examined the microbial nutrient limitation in two plantations: a pure Eucalyptus plantation (PP) and a mixed plantation (Eucalyptus and Erythrophleum fordii, MP) in rhizosphere and non-rhizosphere soils, beginning with two indicators, soil EEA and EES. In this study, the soil EEA was considerably (p < 0.05) greater in the MP contrasted to the PP, and the enzyme C:N:P ratios of the PP (1.12:1:1.10) and MP (1.07:1:1.08) both diverged from the global average EEA (1:1:1), and the deviation degree of the PP was greater. The results of the vector analysis demonstrated that the vector angle (VA) and vector length (VL) were considerably (p < 0.05) smaller in the MP contrasted to the PP. In comparison to the PP, the MP had a considerably (p < 0.05) poorer carbon quality index (CQI). Additionally, both microbial and soil properties have a considerable impact on soil EEA and EES, according to variance partitioning analysis (VPA) and redundancy analysis (RDA). In summary, our results show that the restriction of microorganisms on C and P in rhizosphere soils is usually weaker than that in non-rhizosphere soils and that the addition of N2-fixing tree species to Eucalyptus plantations can lessen but not completely remove the restriction of soil microorganisms on C and P. Future management practices involving mixed plantations with N2-fixing trees species could help decrease microbial nutrient limitation and promote sustainable plantations.

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Section: Al Found That Ees Wasmentioning

confidence: 99%

N2-Fixing Tree Species Help to Alleviate C- and P-Limitation in Both Rhizosphere and Non-Rhizosphere Soils in the Eucalyptus Plantations of Subtropical China

Li,

Huang,

You

et al. 2023

Forests

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“…A meta-analysis revealed significant differences in microbial residues between primary forests and plantations (Ma et al 2022). However, direct evidence regarding the effects of tree species on microbial residue accumulation is limited, and the published data are controversial (Liang et al 2006;Jing et al 2018;Ma et al 2022). Liang et al (2006) and Jing et al (2018) found that microbial residue accumulation is significantly influenced by tree species.…”

Section: Introductionmentioning

confidence: 99%

“…However, direct evidence regarding the effects of tree species on microbial residue accumulation is limited, and the published data are controversial (Liang et al 2006;Jing et al 2018;Ma et al 2022). Liang et al (2006) and Jing et al (2018) found that microbial residue accumulation is significantly influenced by tree species. Conversely, Yang et al (2019) and Ma et al (2022) showed that microbial residue accumulation did not differ between two plantations.…”

Section: Introductionmentioning

confidence: 99%

“…Microbial residue accumulation in micro-aggregates or distribution among aggregates are critical mechanisms for the long-term stabilization of microbial residues (Ni et al 2020). Our current understanding of aggregateassociated microbial residues across different plantations is solely based on the study on temperate soils, which shows that introducing alder (Alnus sibirica) into larch (Larix kaempferi) plantations significantly increases microbial residues within all aggregate sizes (Jing et al 2018). That study did not investigate whether microbial residue distribution differed between the two plantations, although tree species significantly affected the distribution of soil aggregates of different sizes (Jing et al 2018;Su et al 2021).…”

Section: Introductionmentioning

confidence: 99%

“…Our current understanding of aggregateassociated microbial residues across different plantations is solely based on the study on temperate soils, which shows that introducing alder (Alnus sibirica) into larch (Larix kaempferi) plantations significantly increases microbial residues within all aggregate sizes (Jing et al 2018). That study did not investigate whether microbial residue distribution differed between the two plantations, although tree species significantly affected the distribution of soil aggregates of different sizes (Jing et al 2018;Su et al 2021). Therefore, how microbial residue distribution responds to tree species remains an unaddressed question.…”

Section: Introductionmentioning

confidence: 99%

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Influence of tree species on soil microbial residue accumulation and distribution among soil aggregates in subtropical plantations of China

et al. 2023

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Background Microbial residues are significant contributors to stable soil organic carbon (SOC). Soil aggregates effectively protect microbial residues against decomposition; thus, microbial residue accumulation and distribution among soil aggregates determine long-term SOC stability. However, how tree species influence accumulation and distribution of soil microbial residues remains largely unknown, hindering the chances to develop policies for SOC management. Here, we investigated microbial residue accumulation and distribution in soil aggregates under four subtropical tree species (Cunninghamia lanceolata, Pinus massoniana, Michelia macclurei, and Schima superba) after 29 years of afforestation. Results Accumulation of microbial residues in the 0–10 cm soil layer was 13.8–26.7% higher under S. superba than that under the other tree species. A structural equation model revealed that tree species affected the accumulation of microbial residues directly by altering fungal biomass. Additionally, tree species significantly affected microbial residue distribution and contribution to SOC in the top 20 cm soil. In particular, microbial residue distribution was 17.2–33.4% lower in large macro-aggregates (LMA) but 60.1–140.7% higher in micro-aggregates (MA) under S. superba than that under the other species in the 0–10 cm soil layer, and 14.3–19.0% lower in LMA but 43–52.1% higher in MA under S. superba than that under C. lanceolata and M. macclurei in the 10–20 cm soil layer. Moreover, the contribution of microbial residues to SOC was 44.4–47.5% higher under S. superba than under the other tree species. These findings suggest a higher stability of microbial residues under S. superba than that under the other studied tree species. Conclusions Our results demonstrate that tree species influence long-term microbial persistence in forest soils by affecting accumulation and stabilization of microbial residues.

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Effects of N-fixing tree species (Alnus sibirica) on amino sugars in the soils of a Larix kaempferi plantation in eastern Liaoning Province, China

Cited by 2 publications

References 0 publications

N2-Fixing Tree Species Help to Alleviate C- and P-Limitation in Both Rhizosphere and Non-Rhizosphere Soils in the Eucalyptus Plantations of Subtropical China

N2-Fixing Tree Species Help to Alleviate C- and P-Limitation in Both Rhizosphere and Non-Rhizosphere Soils in the Eucalyptus Plantations of Subtropical China

Influence of tree species on soil microbial residue accumulation and distribution among soil aggregates in subtropical plantations of China

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