Effects of altitudinal gradients on leaf area index, soil microbial biomass C and microbial activity in a temperate mixed forest ecosystem of Northwestern Turkey

Bolat, İlyas; Öztürk, Melih

doi:10.3832/ifor1974-009

Cited by 11 publications

(6 citation statements)

References 42 publications

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“…An increase in the total amount of C mic was observed in all areas, more in the burned areas, likely due to the higher amount of rainfall between Months 12 and 24. We found a negative correlation between C mic and qCO 2 that is inconsistent with the results from previous studies (Wardle & Ghani 1995, Bolat & Oztürk 2017, whereas a positive correlation between C mic and CO 2 evolution was detected. A high qCO 2 indicates the need for restoring the C demand as a result of the microbial biomass depending on the renewal of C lost through respiration (Anderson & Domsch 2010, Bolat & Oztürk 2017.…”

Section: Discussioncontrasting

confidence: 99%

“…We found a negative correlation between C mic and qCO 2 that is inconsistent with the results from previous studies (Wardle & Ghani 1995, Bolat & Oztürk 2017, whereas a positive correlation between C mic and CO 2 evolution was detected. A high qCO 2 indicates the need for restoring the C demand as a result of the microbial biomass depending on the renewal of C lost through respiration (Anderson & Domsch 2010, Bolat & Oztürk 2017. After a low-intensity prescribed fire in a Picea abies forest, basal respiration diminished while there was a disproportionate decrease in C mic (Pietikäinen & Fritze 1995), which clearly led to higher values of qCO 2 in the burned areas compared to unburned ones (Certini 2005).…”

Section: Discussioncontrasting

confidence: 99%

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Wildfire and harvesting effects on carbon dynamics in an oak-pine mixed forest

Kaptanoğlu¹,

Namlı²

2020

iForest

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Biogeosciences and Forestry Biogeosciences and Forestry Wildfire and harvesting effects on carbon dynamics in an oak-pine mixed forest Aliye Sepken Kaptanoğlu (1) , Ayten Namlı (2) CO2 emission to the atmosphere is the main cause of global warming. The impacts of land-use changes for agriculture and urbanisation, deforestation, and fire disturbance are attributed to the increase in CO2 emissions. Soil respiration, largely due to microbial activity, is one of the CO2 sources being released to the atmosphere. In this regard, several soil parameters related with carbon cycle, including organic matter, total N, C/N ratio, CO2 efflux, microbial biomass C (Cmic), the Cmic/Corg ratio, the metabolic quotient qCO2, and β-D glucosidase activity, were determined in a burned (harvested, H; non-harvested, NH), and its adjacent unburned (UB), mixed oak-pine forest to estimate the effects of burning and removal of residual woods. The Cmic increased gradually with burning and harvesting after Month 9, and sharp increases were observed in all areas, likely due to the abundant rainfall after Month 12. CO2 efflux decreased in the burned areas at Months 4 and 6; however, this reversed in Month 9. In spite of non-significant differences, we detected higher CO2 efflux values in the unburned areas compared to the burned ones, probably as a result of the drought effect observed in the burned areas up to Months 9 and 12 due to the increased soil heat. There was no significant difference between the H and NH burned areas, while both areas were different from the unburned areas in all soil parameters, except CO2 efflux and qCO2. The harvesting effect was not significant compared to the fire effect with regard to the considered soil variables, likely due to the management and protection of the burned area which allowed a fast vegetation recover. The abundance of the microbial biomass was independent of the changes in CO2 efflux and showed a negative correlation with β-D glucosidase activity. This might be related to the variation in substrate quality, microbial composition and abundance after burning and harvesting.

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Section: Discussioncontrasting

confidence: 99%

Section: Discussioncontrasting

confidence: 99%

Wildfire and harvesting effects on carbon dynamics in an oak-pine mixed forest

Kaptanoğlu¹,

Namlı²

2020

iForest

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“…The climatic gradient that occurs over short distances in alpine slopes makes altitude a good proxy for understanding the response of forest soils and their ecosystem services to different climatic conditions [14,15]. Although many studies have been conducted along elevation gradients [16][17][18], only a few of them considered the same vegetation at different elevations [6,19], and considered the C and N forms both in the soil and the soil solution. In the European Alps, Gobiet et al [20], based on 10 global climate models, found that 1500 m a.s.l.…”

Section: Introductionmentioning

confidence: 99%

Abiotic Parameters and Pedogenesis as Controlling Factors for Soil C and N Cycling Along an Elevational Gradient in a Subalpine Larch Forest (NW Italy)

Pintaldi

Viglietti

D’Amico

et al. 2019

Forests

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Mountain regions are vulnerable to climate change but information about the climate sensitivity of seasonally snow-covered, subalpine ecosystems is still lacking. We investigated the impact of climatic conditions and pedogenesis on the C and N cycling along an elevation gradient under a Larch forest in the northwest (NW) Italian Alps. The environmental gradient that occurs over short distances makes elevation a good proxy for understanding the response of forest soils and nutrient cycling to different climatic conditions. Subalpine forests are located in a sensitive elevation range—the prospected changes in winter precipitation (i.e., shift of snowfalls to higher altitude, reduction of snow cover duration, etc.) could determine strong effects on soil nitrogen and carbon cycling. The work was performed in the western Italian Alps (Long-Term Ecological Research- LTER site Mont Mars, Fontainemore, Aosta Valley Region). Three sites, characterized by similar bedrock lithology and predominance of Larix decidua Mill., were selected along an elevation gradient (1550–1900 m above sea level-a.s.l.). To investigate the effects on soil properties and soil solution C and N forms of changing abiotic factors (e.g., snow cover duration, number of soil freeze/thaw cycles, intensity and duration of soil freezing, etc.) along the elevation gradient, soil profiles were opened in each site and topsoils and soil solutions were periodically collected from 2015 to 2016. The results indicated that the coldest and highest soil (well-developed Podzol) showed the highest content of extractable C and N forms (N-NH4+, DON, DOC, Cmicr) compared to lower-elevation Cambisols. The soil solution C and N forms (except N-NO3−) did not show significant differences among the sites. Independently from elevation, the duration of soil freezing, soil volumetric water content, and snow cover duration (in order of importance) were the main abiotic factors driving soil C and N forms, revealing how little changes in these parameters could considerably influence C and N cycling under this subalpine forest stand.

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“…Theoretically, the LAI can be viewed as an indicator through the C assimilation and vegetation productivity capacity, directly or indirectly affecting the soil CO 2 e ux. On the other hand, it should be noted that LAI has a closely associated with soil temperature and soil moisture, and thus indirectly in uences the R S changes (Bolat & Öztürk, 2017). However, the relationships between soil respiration and LAI are not as stable.…”

Section: Relationships Between Vegetation Characteristics and Total S...mentioning

confidence: 98%

The Vegetation Characteristics of Pinus Taiwanensis Drive the Changes in Different Components of Soil Respiration in Wuyi Mountain, Southeast China

Sun,

Li,

Penuelas

et al. 2024

Preprint

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Effects of altitudinal gradients on leaf area index, soil microbial biomass C and microbial activity in a temperate mixed forest ecosystem of Northwestern Turkey

Cited by 11 publications

References 42 publications

Wildfire and harvesting effects on carbon dynamics in an oak-pine mixed forest

Wildfire and harvesting effects on carbon dynamics in an oak-pine mixed forest

Abiotic Parameters and Pedogenesis as Controlling Factors for Soil C and N Cycling Along an Elevational Gradient in a Subalpine Larch Forest (NW Italy)

The Vegetation Characteristics of Pinus Taiwanensis Drive the Changes in Different Components of Soil Respiration in Wuyi Mountain, Southeast China

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