2021
DOI: 10.3390/agronomy11081591
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Microbial Resource Limitation in Aggregates in Karst and Non-Karst Soils

Abstract: Karst is a widespread ecosystem with properties that affect the microbial activity and storage and cycling of soil organic carbon. The mechanisms underlying microbial resource availability in karst, which limit the microbial growth and activity in soil aggregates, remain largely unknown. We assessed the microbial resource limitations using exoenzymatic stoichiometry and key extracellular enzyme activities in bulk soil and aggregates in karst and non-karst forest soils. Soil organic carbon, total nitrogen, and … Show more

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Cited by 6 publications
(4 citation statements)
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References 77 publications
(108 reference statements)
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“…Subsequently, resource stoichiometry alters microbial community composition to gain the required elements and increase SOM mineralization (Zhu, Ge, Liu, et al, 2018; Zhu, Ge, Luo, et al, 2018; Yuan et al, 2019; Wei, 2020). Extracellular enzyme activities, such as C‐ and N‐acquiring enzymes, can also reflect the resource demands of microbial communities (Schimel, 2003; Hill et al, 2012; Liu, Ge, et al, 2021; Wang et al, 2021). For example, β‐1,4‐glucosidase (BG) and β‐1,4‐xylosidase (XYL) are the largest contributors to the degradation of cellulose and hemicellulose, respectively.…”
Section: Introductionmentioning
confidence: 99%
See 1 more Smart Citation
“…Subsequently, resource stoichiometry alters microbial community composition to gain the required elements and increase SOM mineralization (Zhu, Ge, Liu, et al, 2018; Zhu, Ge, Luo, et al, 2018; Yuan et al, 2019; Wei, 2020). Extracellular enzyme activities, such as C‐ and N‐acquiring enzymes, can also reflect the resource demands of microbial communities (Schimel, 2003; Hill et al, 2012; Liu, Ge, et al, 2021; Wang et al, 2021). For example, β‐1,4‐glucosidase (BG) and β‐1,4‐xylosidase (XYL) are the largest contributors to the degradation of cellulose and hemicellulose, respectively.…”
Section: Introductionmentioning
confidence: 99%
“…Extracellular enzyme activities, such as C-and N-acquiring enzymes, can also reflect the resource demands of microbial communities (Schimel, 2003;Hill et al, 2012;Liu, Ge, et al, 2021;Wang et al, 2021). For example, β-1,4-glucosidase (BG) and β-1,4-xylosidase (XYL) are the largest contributors to the degradation of cellulose and hemicellulose, respectively.…”
Section: Introductionmentioning
confidence: 99%
“…As plant roots, microorganisms, and soil organic matter increase, soil aggregate stability also increases. The restoration of soil aggregates, in turn, can improve soil aeration and water retention, thereby helping to increase microbial activity (Wang et al, 2021). In addition, the decomposition of soil organic matter is usually easier to decompose in a humid and hot environment, while NDT has a significant "cold well effect" (Shui et al, 2018), which may weaken the decomposition process of soil organic matter and promote the accumulation of soil nutrients.…”
Section: Effects Of Karst Tiankeng Degradation On Microbial C and P L...mentioning
confidence: 99%
“…Nitrogen performs a major role in regulating plant nutrient uptake, root development, photosynthetic physiology, yield and quality formation and N transporter genes [81]. At present, many studies have been conducted on SN in rocky desertification, such as soil quality [82,83], soil nutrients [84,85], soil microorganisms [86,87] and plant communities [88]. Most studies discuss the response and influence of TN, ON or IN on geographical factors.…”
Section: The Aim Is To Solve the Problem Of Unclear Sn Form Occurrenc...mentioning
confidence: 99%