Soil enzyme activities and organic matter composition in a turfgrass chronosequence

Shi, Wei; Dell, Emily A.; Bowman, Daryl T.; Iyyemperumal, Kannan

doi:10.1007/s11104-006-9116-1

Cited by 71 publications

(35 citation statements)

References 31 publications

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“…Soil texture and organic matter content affect soil enzyme K m and V max (García et al, 1993). The protection of enzymes by organic matter sometimes enhances their catalytic reactions (Speir, 1977;Shi et al, 2006). The positive relationship between V max and TOC and C/N ratios found in this study confirms these previous findings.…”

Section: Kinetic Parameters Of Soil β β β β β-Glucosidase Under Tempesupporting

confidence: 86%

Kinetic parameters of soil β-glucosidase response to environmental temperature and moisture regimes

Zhang¹,

Chen²,

Wu³

et al. 2011

Rev. Bras. Ciênc. Solo

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Soil β-glucosidase participates in the final step of cellulose biodegradation. It is significant in the soil C cycle and is used as an indicator of the biological fertility of soil. However, the response of its kinetic parameters to environmental temperature and moisture regimes is not well understood. This study tested the β-glucosidase response in the main agricultural soils (black soil, albic soil, brown soil, and cinnamon soil) of Northeast China. Incubation tests were conducted to measure the kinetic parameters Km, Vmax or Vmax/Km of soil β-glucosidase at environmental temperatures of 10, 20 and 30 ºC and at 10, 20 and 30 % soil moisture content. The insensitive response of the kinetic parameters to temperature changes indicates that soil β-glucosidase was present primarily in immobilized form. The significant response of the kinetic parameters of soil β-glucosidase to soil moisture rather than to environmental temperatures suggests that the catalytic ability of soil β-glucosidase was sensitive to changing soil moisture regimes.

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Section: Kinetic Parameters Of Soil β β β β β-Glucosidase Under Tempesupporting

confidence: 86%

Kinetic parameters of soil β-glucosidase response to environmental temperature and moisture regimes

Zhang¹,

Chen²,

Wu³

et al. 2011

Rev. Bras. Ciênc. Solo

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show abstract

“…Application of organic amendments to soil not only increases the total organic carbon content and its different fractions but also has a series of effects on microbial proliferation and activity [2]. Several studies have reported that enzyme activities in the soil are related to the organic matter and microbial biomass [25,31,44]. The application of cow dung to improve the crop yield has been indicated since the time of Kautilya (c. 300 BC), which was later continuously followed by Indian farmers in various ways [34].…”

Section: Discussionmentioning

confidence: 99%

Changes in Bacterial Community Structure of Agricultural Land Due to Long-Term Organic and Chemical Amendments

et al. 2012

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“…The enzyme activity is expressed as n kat g −1 dry soil. One katal is defined as 1 mol of NH 3 -N formed per second (Shi et al 2006). For measuring catalase activity, 2 g of air-dried soil with 40 mL distilled water and 5 mL 0.3% H 2 O 2 was shaken for 20 min at 150 rpm, the surplus H 2 O 2 in filtrate was titrated with 0.02 mol L −1 KMnO 4 (Guan 1986).…”

Section: Methodsmentioning

confidence: 99%

“…The catalase activity is expressed as n kat g −1 dry soil. One katal is defined as 1 mol of KMnO 4 was deoxidated per second (Shi et al 2006). Soil dehydrogenase was measured as described by Pepper et al (1995); 5 g of air-dried soil was incubated with 2,3,5-triphenyltetrazolium chloride substrate at 37°C for 24 h and the concentration of the triphenyl formazan (TPF) product was colorimetrically (485 nm, UV330, Unicam UV-vis) measured.…”

Section: Methodsmentioning

confidence: 99%

Establishment of Elymus natans improves soil quality of a heavily degraded alpine meadow in Qinghai-Tibetan Plateau, China

et al. 2009

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Elymus natans is a dominant native species widely planted to restore the heavily degraded alpine meadows in Qinghai-Tibetan plateau. The objective of this study was to determine how E. natans establishment affected the quality and fertility of a heavily degraded soil. Soil samples (at depths of 0-10, 10-20 and 20-30 cm) were collected from the 3-and 7-year-old E. natans re-vegetated grasslands, and in the heavily degraded alpine meadow (control). The establishment of E. natans promoted plant cover and aboveground biomass. Compared to the non-reseeded meadow, the concentration of total organic C increased by 13% in the soil under 3-year-old reseeded E. natans grassland at 0-10 cm, and by 7-33% in the soil under 7-year-old reseeded E. natans grassland at 0-10, 10-20 and 20-30 cm depths. Rapid increases in total and available N were also observed in two E. natans re-vegetated grasslands, especially in the 0-10 cm soil layer. Across three sampling depths, total P concentration was increased by 17-35% and 18-54% in 3-and 7-year-old reseeded soil respectively, compared to the soil of control. After 3 years of E. natans growth, microbial biomass C increased by 13-58% at 0-10 and 10-20 cm layers; while it increased by 43-87% in 7-year-old reseeded treatment at 0-10, 10-20 and 20-30 cm depths relative to control. A similar increasing trend was observed for microbial biomass N and P generally. Significant increase in neutral phosphatase, urease, catalase and dehydrogenase was also found in 3-and 7-year-old re-vegetated grasslands compared with heavily degraded meadow. Our results suggest a significant positive impact of E. natans establishment on soil quality. Thus, E. natans establishment could be an effective and applicable measure in restoring heavily degraded alpine meadow in the region of Qinghai-Tibetan Plateau.

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Soil enzyme activities and organic matter composition in a turfgrass chronosequence

Cited by 71 publications

References 31 publications

Kinetic parameters of soil β-glucosidase response to environmental temperature and moisture regimes

Kinetic parameters of soil β-glucosidase response to environmental temperature and moisture regimes

Changes in Bacterial Community Structure of Agricultural Land Due to Long-Term Organic and Chemical Amendments

Establishment of Elymus natans improves soil quality of a heavily degraded alpine meadow in Qinghai-Tibetan Plateau, China

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