Changes of natural 13C abundance in microbial biomass during litter decomposition

Piao, He-Chun; Zhu, Junda; Liu, G.S.; Liu, C.Q.; Tao, Fenggang

doi:10.1016/j.apsoil.2005.09.006

Cited by 13 publications

(3 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Piao et al (2006) also reported that soil microbial biomass C was significantly higher in the litteramended soil than the controls. Although Maithani et al (1998) didn't show any significant effects of mixed litter on soil microbial biomass C, they found that litter phenotype affected litter chemistry (such as C:N ratios, lignin, phenolic, condensed tannin) and litter chemistry accounted for 2.59% of the variation in microbial biomass C. In our study, we found that soil microbial biomass C and Cmic/Corg increased but the qCO 2 decreased in mixed leaf litters treatments.…”

Section: Discussionmentioning

confidence: 93%

Effects of Single Chinese Fir and Mixed Leaf Litters on Soil Chemical, Microbial Properties and Soil Enzyme Activities

Wang

Zeng

2006

Plant Soil

View full text Add to dashboard Cite

show abstract

Section: Discussionmentioning

confidence: 93%

Effects of Single Chinese Fir and Mixed Leaf Litters on Soil Chemical, Microbial Properties and Soil Enzyme Activities

Wang

Zeng

2006

Plant Soil

View full text Add to dashboard Cite

show abstract

“…Usually, CO 2 from microbial respiration is 13 C-depleted compared to the feeding substrate (Blair et al, 1985;Mary et al, 1992;Potthoff et al, 2003). Our experimental results showed, therefore, that the shift of C isotope composition of microbial biomass towards increasing d 13 C values was mainly caused by microbial selective utilization (Piao et al, 2006). The microbial population uses compounds preferentially, such as cellulose, starch, and protein, that have larger d 13 C values than the average of soil organic C (SOC) (Bird et al, 2002).…”

Section: Isotopic Fractionation Within the Natural-13 Clabeling Approachmentioning

confidence: 76%

Three‐source partitioning of CO₂ efflux from maize field soil by ¹³C natural abundance

Werth

Kuzyakov

2009

Z. Pflanzenernähr. Bodenk.

View full text Add to dashboard Cite

A natural‐13C‐labeling approach—formerly observed under controlled conditions—was tested in the field to partition total soil CO2 efflux into root respiration, rhizomicrobial respiration, and soil organic matter (SOM) decomposition. Different results were expected in the field due to different climate, site, and microbial properties in contrast to the laboratory. Within this isotopic method, maize was planted on soil with C3‐vegetation history and the total CO2 efflux from soil was subdivided by isotopic mass balance. The C4‐derived C in soil microbial biomass was also determined. Additionally, in a root‐exclusion approach, root‐ and SOM‐derived CO2 were determined by the total CO2 effluxes from maize (Zea mays L.) and bare‐fallow plots. In both approaches, maize‐derived CO2 contributed 22% to 35% to the total CO2 efflux during the growth period, which was comparable to other field studies. In our laboratory study, this CO2 fraction was tripled due to different climate, soil, and sampling conditions. In the natural‐13C‐labeling approach, rhizomicrobial respiration was low compared to other studies, which was related to a low amount of C4‐derived microbial biomass. At the end of the growth period, however, 64% root respiration and 36% rhizomicrobial respiration in relation to total root‐derived CO2 were calculated when considering high isotopic fractionations between SOM, microbial biomass, and CO2. This relationship was closer to the 50% : 50% partitioning described in the literature than without fractionation (23% root respiration, 77% rhizomicrobial respiration). Fractionation processes of 13C must be taken into account when calculating CO2 partitioning in soil. Both methods—natural 13C labeling and root exclusion—showed the same partitioning results when 13C isotopic fractionation during microbial respiration was considered and may therefore be used to separate plant‐ and SOM‐derived CO2 sources.

show abstract

“…Microbial biomass carbon (C) is affected by the amount and diversity of C inputs and nutrient availability. Soil microbial biomass C has been reported to be significantly higher in litter-amended soils than the controls (Piao et al 2006) and has been reported to be significantly influenced by the level of litter species diversity (Bardgett and Shine 1999). Additionally, soil basal respiration, a measure of soil organic matter decomposition, has been reported to be influenced by soil temperature, moisture (Raich and Schlesinger 1992;Liu et al 2005), C input (Landi et al 2006) and microbial biomass.…”

Section: Introductionmentioning

confidence: 95%

Relating net primary productivity to soil organic matter decomposition rates in pure and mixed Chinese fir plantations

2010

View full text Add to dashboard Cite

In a 5-year field trial, we examined plant productivity and soil organic matter decomposition on plots with a mixture of Chinese fir (Cunninghamia lanceolata (Lamb.) Hook.) and broadleaved trees. We compared pure fir (PF) plots to two mixed plots (2:1 ratio of fir to broadleaved trees): MP1 (C. lanceolata and Liquidambar formosana Hance) and MP2 (C. lanceolata and Alnus cremastogyne Burk). The mixed plots differed in that the MP2 plots incorporated a nitrogen-fixing tree (A. cremastogyne). We hypothesized that the mixed plots would have higher soil organic matter decomposition rates than the PF plots as a result of increased primary productivity. The increased productivity would increase carbon input into soils, thus resulting in greater microbial biomass and soil basal respiration. We measured tree biomass, soil organic matter decomposition rates, microbial biomass carbon, total organic carbon, metabolic quotient and microbial quotient for each plot. The results showed that the productivity, microbial biomass carbon, and total carbon in the MP2 plots were significantly higher than in the PF and MP1 plots. Path analyses suggested that soil respiration varied with the amount of tree biomass produced. However contrary to our hypothesis, soil basal respiration was higher in the PF plots than in the MP2 plots.

show abstract

Changes of natural 13C abundance in microbial biomass during litter decomposition

Cited by 13 publications

References 25 publications

Effects of Single Chinese Fir and Mixed Leaf Litters on Soil Chemical, Microbial Properties and Soil Enzyme Activities

Effects of Single Chinese Fir and Mixed Leaf Litters on Soil Chemical, Microbial Properties and Soil Enzyme Activities

Three‐source partitioning of CO₂ efflux from maize field soil by ¹³C natural abundance

Relating net primary productivity to soil organic matter decomposition rates in pure and mixed Chinese fir plantations

Contact Info

Product

Resources

About

Changes of natural 13C abundance in microbial biomass during litter decomposition

Cited by 13 publications

References 25 publications

Effects of Single Chinese Fir and Mixed Leaf Litters on Soil Chemical, Microbial Properties and Soil Enzyme Activities

Effects of Single Chinese Fir and Mixed Leaf Litters on Soil Chemical, Microbial Properties and Soil Enzyme Activities

Three‐source partitioning of CO2 efflux from maize field soil by 13C natural abundance

Relating net primary productivity to soil organic matter decomposition rates in pure and mixed Chinese fir plantations

Contact Info

Product

Resources

About

Three‐source partitioning of CO₂ efflux from maize field soil by ¹³C natural abundance