Herbivore grazing mitigates the negative effects of nitrogen deposition on soil organic carbon in low‐diversity grassland

Li, Guangyin; Cai, Jinting; Song, Xuxin; Pan, Xiaojun; Pan, Duofeng; Jiang, Shicheng; Sun, Jijia; Zhang, Minna

doi:10.1111/1365-2664.14066

Cited by 10 publications

(7 citation statements)

References 69 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Although this study did not test the contents of soil organic matter mineralization, previous literature has shown that the quantity and quality of soil organic matter are the main driving factors affecting microorganisms [ 94 ]. The increasing plant below-ground biomass may improve the quantity and quality of soil organic matter in semi-arid zones [ 32 ], and the increased soil C resources provide rich substrates and energy for microorganism growth and basal metabolism [ 7 ], thus increasing fungal diversity. In this study, the decreased microbial C limitation favored fungal richness under high plant diversity, thus promoting soil multifunctionality ( Figure 9 ).…”

Section: Discussionmentioning

confidence: 99%

“…It is reasonable to obtain data based on one-time sampling to explore the impact of different levels of plant diversity on soil, microorganisms, and soil functions. Additionally, this method has been widely adopted by many studies in the field of ecology [ 32 , 39 ].…”

Section: Methodsmentioning

confidence: 99%

“…Loss in plant diversity of terrestrial ecosystems might aggravate C and other nutrient limitations [ 30 , 31 , 32 ]. Heterotrophic organisms depend on plants to obtain C substrates; therefore, there is ample evidence that soil microbes are usually limited by C [ 33 ].…”

Section: Introductionmentioning

confidence: 99%

“…Thus, enzymatic stoichiometry provides a method for this study [ 35 ]. Several studies have shown that less diverse plant communities allocate fewer photosynthates to below-ground ecosystems by decreasing the exudation of root exudates [ 32 ]. Root exudates are an important C source for microbial growth [ 36 ]; therefore, a less diverse plant community might intensify microbial C limitation [ 37 ].…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Plant Diversity and Fungal Richness Regulate the Changes in Soil Multifunctionality in a Semi-Arid Grassland

Liu

Zhang

et al. 2022

Biology

View full text Add to dashboard Cite

Loss in plant diversity is expected to impact biodiversity and ecosystem functioning (BEF) in terrestrial ecosystems. Soil microbes play essential roles in regulating ecosystem functions. However, the important roles and differences in bacterial and fungal diversity and rare microbial taxa in driving soil multifunctionality based on plant diversity remain poorly understood in grassland ecosystems. Here, we carried out an experiment in six study sites with varied plant diversity levels to evaluate the relationships between soil bacterial and fungal diversity, rare taxa, and soil multifunctionality in a semi-arid grassland. We used Illumina HiSeq sequencing to determine soil bacterial and fungal diversity and evaluated soil functions associated with the nutrient cycle. We found that high diversity plant assemblages had a higher ratio of below-ground biomass to above-ground biomass, soil multifunctionality, and lower microbial carbon limitation than those with low diversity. Moreover, the fungal richness was negatively and significantly associated with microbial carbon limitations. The fungal richness was positively related to soil multifunctionality, but the bacterial richness was not. We also found that the relative abundance of saprotrophs was positively correlated with soil multifunctionality, and the relative abundance of pathogens was negatively correlated with soil multifunctionality. In addition, the rare fungal taxa played a disproportionate role in regulating soil multifunctionality. Structural equation modeling showed that the shift of plant biomass allocation patterns increased plant below-ground biomass in the highly diverse plant plots, which can alleviate soil microbial carbon limitations and enhance the fungal richness, thus promoting soil multifunctionality. Overall, these findings expand our comprehensive understanding of the critical role of soil fungal diversity and rare taxa in regulating soil multifunctionality under global plant diversity loss scenarios.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Plant Diversity and Fungal Richness Regulate the Changes in Soil Multifunctionality in a Semi-Arid Grassland

Liu

Zhang

et al. 2022

Biology

View full text Add to dashboard Cite

show abstract

“…The primer design for genes related to soil N transformation is given in Table S3 (Liao et al 2019). The PCR system contained 50 ll: 25 ll 2 9 Fine Taq TM PCR supermix, 1 ll DNA template, 1 ll forward primer (10 lmolÁl À1 ), 1 ll reverse primer (10 lmolÁl À1 ), and 22 ll ddH 2 O.…”

Section: Gene Expression Analysismentioning

confidence: 99%

Improvement of soil acidification and ammonium nitrogen content in tea plantations by long‐term use of organic fertilizer

Wang

Liao

et al. 2023

Plant Biol J

View full text Add to dashboard Cite

Soil acidification is common in some Chinese tea plantations, which seriously affected growth of tea trees. Hence, it is essential to explore soil remediation in acidified tea plantations for sustainable development of the tea industry. We sought to determine how different fertilizers affect acidified soil and their N transformation in tea plantations. Different fertilizers were used on acidified tea plantation soils for 4 years (2017–2021), and changes in soil pH, indices related to soil N transformation and tea yield were analysed to construct interaction networks of these indices and find which had the largest influence on fertilization. Long‐term use of sheep manure reduced soil acidification, increased soil pH, enhanced the number and intensity of N‐fixing and ammonifying bacteria, urease, protease, asparaginase and N‐acetamide glucose ribosidase activity and nifH gene expression. This treatment reduced the number and intensity of soil nitrifying and denitrifying bacteria, nitrate reductase and nitrite reductase activity, while the expression of amoA‐AOA, nirK, nirS, narG and nosZ in turn increased ammonium N content of the soil, reduced nitrate N content, and enhanced tea yield. Topsis index weight analysis showed that ammonium N content in the soil had the largest impact among fertilization effects. Long‐term use of sheep manure was beneficial in restoring the balance of the micro‐ecosystem in acidified soil. This study provides an important practical basis for soil remediation and fertilizer management in acidified tea plantation soils.

show abstract

How does grassland degradation affect soil enzyme activity and microbial nutrient limitation in saline‐alkaline meadow?

Yang,

Wu,

Ruan

et al. 2023

Land Degrad Dev

View full text Add to dashboard Cite

Soil enzyme activity and its stoichiometry are excellent representatives of soil microorganisms' response to changing conditions, and act as a good indicator of microbial energy and nutrient demands. However, how soil enzyme activity and microbial nutrient limitation will be modified by grassland degradation is not well understood, especially in the saline‐alkaline meadow. Here, we presented how soil enzyme activity and microbial nutrient limitation shifted along a well‐characterized gradient of salinized degraded grasslands (non‐degraded, moderately degraded, and severely degraded). Our results showed soil enzyme activity was the highest in moderately degraded grasslands, which was mainly regulated by soil bacterial diversity. Soil microbial community metabolism in alkali‐saline meadow grasslands was limited by both carbon and phosphorus. Microbial carbon limitation showed a hump‐shaped pattern along the grassland degradation gradient, while microbial phosphorus limitation showed a gradually decreasing trend. Soil bacterial diversity is a key regulator of soil microbial carbon limitation, but the structure of the soil bacterial and plant community determines microbial phosphorus limitation. Taken together, our findings, taken together, provide evidence that soil bacteria are direct drivers of soil enzyme activity and microbial nutrient limitation along a grassland degradation gradient with salinization and suggest that these changes are regulated by soil salinity.

show abstract

Herbivore grazing mitigates the negative effects of nitrogen deposition on soil organic carbon in low‐diversity grassland

Abstract: 1. Changes in soil carbon (C) sequestration in grassland ecosystems have important impacts on the global C cycle. As such, it is important that researchers better

Cited by 10 publications

References 69 publications

Plant Diversity and Fungal Richness Regulate the Changes in Soil Multifunctionality in a Semi-Arid Grassland

Plant Diversity and Fungal Richness Regulate the Changes in Soil Multifunctionality in a Semi-Arid Grassland

Improvement of soil acidification and ammonium nitrogen content in tea plantations by long‐term use of organic fertilizer

How does grassland degradation affect soil enzyme activity and microbial nutrient limitation in saline‐alkaline meadow?

Contact Info

Product

Resources

About