Effects on rhizospheric and heterotrophic respiration of conversion from primary forest to secondary forest and plantations in northeast China

Shi, Baoku; Gao, Weifeng; Jin, Guangze

doi:10.1016/j.ejsobi.2014.11.003

Cited by 35 publications

(14 citation statements)

References 37 publications

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“…It has been proposed that much of the spatial variations in soil respiration could be explained by differences of soil organic matter, root biomass and soil microorganisms (Ryan and Law 2005;Epron et al 2006;Sheng et al 2010;Wang et al 2010a). The substrate C availability has been reported to have a strong impact on soil respiration or its components (Sheng et al 2010; Shi et al 2015a). For soil organic C, however, no apparent differences were observed among these forest management regimes in our study (Table 1).…”

Section: Discussioncontrasting

confidence: 51%

“…1c). Soil CO 2 emissions from soil respiration primarily generate from heterotrophic (microbial) respiration and autotrophic (root) respiration (Janssens et al 2001;Shi et al 2015a). It has been proposed that much of the spatial variations in soil respiration could be explained by differences of soil organic matter, root biomass and soil microorganisms (Ryan and Law 2005;Epron et al 2006;Sheng et al 2010;Wang et al 2010a).…”

Section: Discussionmentioning

confidence: 99%

“…The emission of carbon dioxide (CO 2 ) from soils through autotrophic and heterotrophic respiration is recognized as one of the largest fluxes and plays an important role in the global C cycling (Schlesinger and Andrews 2000;Janssens et al 2001). Soil respiration has been shown to be sensitive to climate, vegetation composition, land-use changes, and soil types (Bru¨ggemann et al 2005;Epron et al 2006;Shi et al 2015a). Changes in forest management regimes can substantially alter soil organic C (SOC) dynamics and affect soil-atmosphere exchanges of CO 2 by changing tree species composition that influence litter's quality and quantity, decomposability of organic matter, root system, and microbial activity (Janssens et al 2001;Tang et al 2006;Sheng et al 2010;Wang et al 2010a;Vesterdal et al 2013;Yuan et al 2013).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Impacts of nitrogen‐fixing and non‐nitrogen‐fixing tree species on soil respiration and microbial community composition during forest management in subtropical China

Luo

Cheng

Shi

et al. 2016

Ecological Research

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Forest management with N‐fixing trees can improve soil fertility and tree productivity, but have little information regarding belowground carbon processes and microbial properties. We aimed to evaluate the effects of three forest management regimes, which were Erythrophleum fordii (N‐fixing tree), Pinus massoniana (non‐N‐fixing tree), and their mixed forest, on soil respiration and microbial community composition in subtropical China, using Barometric Process Separation and phospholipid fatty acid profiles, respectively. We found that the inclusions of N‐fixing species in forests significantly increased the soil respiration, but have no effects on SOC and ecosystem total C stock. In addition, soil microbial communities were obviously different among the three forest management regimes. For instance, total and bacterial PLFAs were higher in the E. fordii and mixed forest than in the P. massoniana forest. Conversely, fungal PLFAs in the P. massoniana forest were elevated versus the other two forests. Soil total N, nitrate‐N and pH were the key determinants shaping the microbial community composition. Our study suggests that variations in soil respiration in the studied forests could be primarily explained by the differences of root biomass and soil microbial biomass, but not soil organic carbon. Although soil fertility and microbial biomass were promoted, N‐fixing plantings also brought on increased CO2 emissions in laboratory assays. The future decision of tree species selection for forest management in subtropical China therefore needs to consider the potential influences of tree species on CO2 emissions.

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Section: Discussioncontrasting

confidence: 51%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Impacts of nitrogen‐fixing and non‐nitrogen‐fixing tree species on soil respiration and microbial community composition during forest management in subtropical China

Luo

Cheng

Shi

et al. 2016

Ecological Research

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“…Therefore, SOC sequestration capacity might be even larger than expected in the above estimations, due to increasing SOC stability and longer SOC turnover time. The lower Q 10 value with urbanization meant a higher temperature stability and a lower soil basal respiration [54]. Therefore, greater carbon accumulation, longer carbon turnover time, and more stable carbon sequestration are the main features of urbanization-induced forest SOC accumulation.…”

Section: Characteristics Of Urbanization and Carbon Accumulation Due mentioning

confidence: 99%

Urbanization Drives SOC Accumulation, Its Temperature Stability and Turnover in Forests, Northeastern China

Zhai

Wang

et al. 2017

Forests

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Global urbanization is a vital process shaping terrestrial ecosystems but its effects on forest soil carbon (C) dynamics are still not well defined. To clarify the effects of urbanization on soil organic carbon (SOC) variation, 306 soil samples were collected and analyzed under two urban-rural gradients, defined according to human disturbance time and ring road development in Changchun, northeast China. Forest SOC showed a linear increase with increasing human disturbance time from year 1900 to 2014 (13.4 g C m −2 year −1 ), and a similar trend was found for the ring road gradient. Old-city regions had the longest SOC turnover time and it increased significantly with increasing urbanization (p = 0.011). Along both urban-rural gradients SOC stability toward temperature variation increased with increasing urbanization, meaning SOC stability in old-city regions was higher than in new regions. However, none of the urban-rural gradients showed marked changes in soil basal respiration rate. Both Pearson correlation and stepwise regression proved that these urbanization-induced SOC patterns were closely associated with landscape forest (LF) proportion and soil electrical conductivity (EC) changes in urban-rural gradients, but marginally related with tree size and compositional changes. Overall, Changchun urbanization-induced SOC accumulation was 60.6-98.08 thousand tons, accounting for 12.8-20.7% of the total forest C biomass sequestration. Thus, China's rapid urbanization-induced SOC sequestration, stability and turnover time, should be fully estimated when evaluating terrestrial C balance.

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“…Forestry practices may not only affect C sequestration but may also change soil respiration (R S ) [28]. As the structure and function of a forest ecosystem could be altered after the replacement of the over-mature forests by secondary forests and plantations [29], forest conversion has shown complex and changeable effects on R S [30]. An estimate based on limited data has shown that the conversion of natural forest to secondary forests and plantations has led to reduced R S by 32% and 46%-48%, respectively [31], while a significant increase in CO 2 emission was observed by stand-replacing from secondary forest to plantations [32].…”

mentioning

confidence: 99%

Effects on Carbon Sources and Sinks from Conversion of Over-Mature Forest to Major Secondary Forests and Korean Pine Plantation in Northeast China

Zhao

et al. 2019

Sustainability

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The effects of replacing over-mature forest with secondary forests and plantations are significant for terrestrial ecosystem carbon (C) dynamics. However, the carbon balance and recovery time of this replacement process remain unclear. This study measured the fluxes of CH 4 and CO 2 in soils and the annual net C sequestration (ANCS) from seven ecosystems with different vegetation types (over-mature forest (OMF), Korean pine plantation (KPP), hardwood forest (HWF), Betula platyphylla forest (BPF), Populous davidiana forest (PDF), mixed deciduous forest (MDF), and Mongolian oak forest (MOF)) using the static chamber-gas chromatography method and the relative growth equation method. We examined the effects of environmental factors (e.g., air and soil temperature, soil volumetric water content (SVWC), soil pH, nitrate nitrogen (NO 3 − -N), ammonium nitrogen (NH 4 + -N), and soil organic carbon (SOC)) on CH 4 and CO 2 fluxes at the Maoershan EcosystemResearch Station in Northeast China. The carbon source or sink of OMF, KPP, and five secondary forests (HWF, BPF, PDF, MDF, and MOF) were then evaluated based on net ecosystem C balance. The results revealed that the mean annual CH 4 fluxes varied between −0.046 and −0.077 mg m −2 h −1 . The mean annual absorption of CH 4 in the secondary forests and OMF were respectively 1.09-1.67 times and 1.11 times higher than that of KPP (0.046 mg m −2 h −1 , p < 0.05). The mean annual CO 2 fluxes varied between 140.425 and 250.023 mg m −2 h −1 . The CO 2 fluxes in the secondary forests and KPP soils were respectively 1.33-1.78 times and 1.16 times higher than that of OMF (140.425 mg m −2 h −1 , p < 0.05). The CH 4 and CO 2 fluxes were mainly influenced by air and soil temperature, SVWC, soil pH, NO 3 − -N, NH 4 + -N, and SOC in Northeast China. The ANCS of vegetation (3.41 ± 0.27 − 6.26 ± 0.75 t C ha −1 y −1 ) varied widely among different forest types: KPP had the largest ANCS (6.26 ± 0.75 t C ha −1 y −1 , which was higher than secondary forests and OMF by 1.20-1.84 times and 1.46 times, respectively, p > 0.05). Carbon sources and sinks were significantly different among the seven types of vegetation: OMF and KPP were observed to be the greatest C sinks, and secondary forests were shown to be the weakest carbon sinks or net C sources in the study region.

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Effects on rhizospheric and heterotrophic respiration of conversion from primary forest to secondary forest and plantations in northeast China

Cited by 35 publications

References 37 publications

Impacts of nitrogen‐fixing and non‐nitrogen‐fixing tree species on soil respiration and microbial community composition during forest management in subtropical China

Impacts of nitrogen‐fixing and non‐nitrogen‐fixing tree species on soil respiration and microbial community composition during forest management in subtropical China

Urbanization Drives SOC Accumulation, Its Temperature Stability and Turnover in Forests, Northeastern China

Effects on Carbon Sources and Sinks from Conversion of Over-Mature Forest to Major Secondary Forests and Korean Pine Plantation in Northeast China

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