Soil organic C variability and microbial functions in a Mediterranean agro-forest ecosystem

Lagomarsino, Alessandra; Benedetti, Antonio; Marinari, Sara; Pompili, Letizia; Moscatelli, M.C.; Roggero, Pier Paolo; Lai, Roberto; Ledda, Luigi; Grégo, S.

doi:10.1007/s00374-010-0530-4

Cited by 124 publications

(57 citation statements)

References 43 publications

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“…LC and MBC values were consistent to what was observed by Lagomarsino et al (2011). The differences in terms of qM suggested a greater C sequestration potential generated by trees and pasture management, as was observed comparing forest and pasture with agricultural systems (Lagomarsino et al, 2011).…”

Section: Discussionsupporting

confidence: 82%

“…This trend, in the case of wooded grazing systems, may be explained also by animal dejections that increase soil organic matter mineralization (Lai et al, 2012). LC and MBC values were consistent to what was observed by Lagomarsino et al (2011). The differences in terms of qM suggested a greater C sequestration potential generated by trees and pasture management, as was observed comparing forest and pasture with agricultural systems (Lagomarsino et al, 2011).…”

Section: Discussionsupporting

confidence: 76%

“…According to what was observed by Lagomarsino et al (2011), the 2 vineyard management types appeared not to be influenced by tillage, as the 4 microenvironments formed a single cluster characterized by the lowest functional diversity index. Thus, it is evident that the soil functional diversity was flattened by the increased anthropic pressure (e.g., deep inversion tillage at the vineyard establishment) when compared to that of the grassland habitats.…”

Section: Discussionmentioning

confidence: 54%

“…In a previous paper, Lagomarsino et al (2011) showed that land use and management practices in such environments influenced C cycling in terms of organic C storage, microbial biomass pool, C mineralization, enzyme activity, and related functional diversity. In this paper we focused on the variation in soil C content and microbial functions across microenvironments in the context of Mediterranean wooded grasslands and vineyards under different soil management regimes.…”

Section: Introductionmentioning

confidence: 99%

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Variation in soil C and microbial functions across tree canopy projection and open grassland microenvironments

Lai¹,

Lagomarsino²,

Ledda³

et al. 2014

Turk J Agric For

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Section: Discussionsupporting

confidence: 82%

Section: Discussionsupporting

confidence: 76%

Section: Discussionmentioning

confidence: 54%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Variation in soil C and microbial functions across tree canopy projection and open grassland microenvironments

Lai¹,

Lagomarsino²,

Ledda³

et al. 2014

Turk J Agric For

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“…Compared to the absolute enzyme activities per unit of soil, specific enzyme activities per unit of soil total organic C (SOC) or microbial biomass C (MBC) can be used to normalize differences in SOC or MBC contents, thereby permitting a reliable comparison of soil microbial functions under different soil management practices, and providing ecological information about the immobilized extracellular enzyme activities and the metabolic status of variations in the microbial community or enzyme efficiency (Lagomarsino et al, 2011;Raiesi and Beheshti, 2014). They can also indicate the physiological capacity of enzymes since the activities are the result of the current or most recently viable microbial community (Waldrop et al, 2000).…”

Section: Introductionmentioning

confidence: 99%

Responses of absolute and specific soil enzyme activities to long term additions of organic and mineral fertilizer

Zhang

Dong

Dai

et al. 2015

Science of The Total Environment

172

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• Acid phosphatase activity was negatively correlated with soil pH and P content.• βG, NAG, and LAP activities were positively correlated with SOC and Total N contents.• The four enzyme activities were significantly higher under manure than NPK fertilizer.• Enzyme activities were positively correlated with actinomycete and G + bacterium.• We recommend reducing P fertilizer application rates to subtropical paddy soils. G R A P H I C A L A B S T R A C Ta b s t r a c t a r t i c l e i n f o Long-term phosphorus (P) and nitrogen (N) applications may seriously affect soil microbial activity. A long-term field fertilizer application trial was established on reddish paddy soils in the subtropical region of southern China in 1998. We assessed the effects of swine manure and seven different rates or ratios of NPK fertilizer treatments on (1) the absolute and specific enzyme activities per unit of soil organic carbon (SOC) or microbial biomass carbon (MBC) involved in C, N, and P transformations and (2) their relationships with soil environmental factors and soil microbial community structures. The results showed that manure applications led to increases in the absolute and specific activities of soil β-1,4-glucosidase(βG), β-1,4-N-acetylglucosaminidase (NAG), and leucine aminopeptidase (LAP). The absolute and specific acid phosphatase (AP) activities decreased as mineral P fertilizer application rates and ratios increased. Redundancy analysis (RDA) showed that there were negative correlations between absolute and specific AP activities, pH, and total P contents, while there were positive correlations between soil absolute and specific βG, NAG, and LAP enzyme activities, and SOC and total N contents. RDA showed that the contents of actinomycete and Gram-positive bacterium PLFA biomarkers are more closely related to the absolute and specific enzyme activities than the other PLFA biomarkers (P b 0.01). Our results suggest that both the absolute and specific enzyme activities could be used as sensitive soil quality indicators that provide useful linkages with the microbial community structures and environmental factors. To maintain microbial activity and to minimize environmental impacts, P should be applied as a combination of inorganic and organic forms, and total P fertilizer application rates to subtropical paddy soils should not exceed 44 kg P ha −1 year −1 .

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Short‐Term Impact of Organic Fertilization and Seasonal Variations on Enzymes and Microbial Indices Under Rice–Wheat Rotation

Gaind

Singh

2016

CLEAN Soil Air Water

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The impact of organic fertilization (OF) and seasonal variation on microbial indices was compared with chemical fertilization (CF) and integrated nutrient management (INM) practices under rice–wheat sequence. The field experiments conducted from 2011 to 2013, adopting a split‐plot design, showed that CF practices decreased the soil pH, microbial biomass carbon, and CO2 metabolic quotient but increased the percentage of microbial biomass C to soil organic carbon. Organic fertilization though enhanced the soil organic carbon but resulted in variable microbial responses. Under paddy soil, OF practices registered an increase in dehydrogenase, alkaline phosphatase (ALK), and fluorescein diacetate activity by 35, 169, and 22% in the first, second, and third crop cycle, respectively, compared with CF. However, the ratios of ALK and aryl sulfatase to microbial biomass carbon were higher (0.378 and 0.498, respectively) in INM‐practiced paddy soil compared to 0.364 and 0.447 in OF. Relatively higher soil enzymatic activity titers, basal respiration, microbial biomass carbon in winter wheat compared to summer paddy, indicated a more pronounced effect of season on soil microbial attributes than soil management practices. Though, organic manure could improve the soil quality in tropical agro‐ecosystems, compared to CF but their biannual application was not microbiologically beneficial beyond three rice–wheat crop cycles.

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Soil organic C variability and microbial functions in a Mediterranean agro-forest ecosystem

Cited by 124 publications

References 43 publications

Variation in soil C and microbial functions across tree canopy projection and open grassland microenvironments

Variation in soil C and microbial functions across tree canopy projection and open grassland microenvironments

Responses of absolute and specific soil enzyme activities to long term additions of organic and mineral fertilizer

Short‐Term Impact of Organic Fertilization and Seasonal Variations on Enzymes and Microbial Indices Under Rice–Wheat Rotation

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