Impact of land use changes on the storage of soil organic carbon in active and recalcitrant pools in a humid tropical region of India

Nath, Arun Jyoti; Brahma, Biplab; Sileshi, Gudeta W.; Das, Ashesh Kumar

doi:10.1016/j.scitotenv.2017.12.199

Cited by 104 publications

(53 citation statements)

References 47 publications

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“…Our estimates were consistent with the values from 27-and 87year-old Chinese fir stands reported from other studies in Fujian Province (68.6 and 76.0 t ha −1 ; Yang et al 2003 andZhong et al 2008, respectively), but were far lower than the average value of 194 t ha −1 for different forest ecosystems in China (Zhou et al 2000). Similar to our results, many studies have reported that the SOC stock increases with plantation age, e.g., in rubber plantations (Nath et al 2018). Our SOC storage estimates for the mature stage (22 years old) were consistent with those for Chinese fir at a similar age in mixed stands (68.6 t ha −1 ) (Yang et al 2003), but were greater than those for a pure Chinese fir stand (56.0 t ha −1 , soil depth 0-40 cm).…”

Section: Soc Stocksupporting

confidence: 92%

“…SOC can be divided into active carbon (AC) and recalcitrant/passive carbon pools, which make different contributions to the atmospheric CO 2 content due to varying sequestration and release processes (Nath et al 2018), but also interact. Understanding the nature and cycling of SOC and controlling factors is critical to inform recommendations for land use and management to maximize the uptake and stability of SOC (Malik et al 2018).…”

Section: Soc Stockmentioning

confidence: 99%

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Tissue-specific carbon concentration, carbon stock, and distribution in Cunninghamia lanceolata (Lamb.) Hook plantations at various developmental stages in subtropical China

Zhou

Liu

et al. 2019

Annals of Forest Science

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& Key message Carbon (C) concentrations in Cunninghamia lanceolata (Lamb.) Hook plantations differed significantly among tissue types and were greater for aboveground than belowground tissues. Plantation C stock increased with a developmental stage from young to mature to overmature, but at all stages, the majority occurred as soil organic carbon (SOC) and was more influenced by belowground fine roots than by aboveground litterfall. & Context Failing to account for tissue-specific variation in the C concentration can result in inaccurate forest C stock estimates. & Aims We aimed to quantify the relative magnitudes of C stock for Chinese fir plantations at different developmental stages. Specifically, we focused on assessing tissue-specific C concentrations and C dynamics return of above-and belowground litterfall. & Methods Carbon traits (C concentration, C flux, C stock, and distribution at tree and ecosystem scales) were quantified in a chronosequence of Chinese fir (Cunninghamia lanceolata (Lamb.) Hook) monoculture plantation stands at young (10), mature (22), and overmature (34 years old) developmental stages. & Results Carbon concentrations differed significantly among tissue types, with mean values of 48.5 ± 0.1% and 42.5 ± 0.2% for above-and belowground biomass, respectively. The aboveground tissue C concentration, tree-and plantation-scale C stock, and SOC stock depended on developmental stage. Carbon return in litterfall, tree C stock, and SOC increased from the young to the overmature stage. SOC stock accounted for the majority of plantation C stock at all developmental stages (78.3, 59.6, and 55.7% in the young, mature, and overmature stages, respectively) and was more highly influenced by belowground fine roots than aboveground litterfall. Carbon stocks in Chinese fir plantations were 86, 129, and 153 t ha −2 at the young, mature, and overmature stages. & Conclusion Prolonging Chinese fir rotation increases C sequestration potential and should be the focus of forest management strategies. The tissue-specific C concentrations provide detailed information for more accurate biomass C stock estimates for Chinese fir plantations and other subtropical coniferous forests. They indicate that current guidelines result in an overestimation of belowground biomass C stocks. Using the standard 0.47 biomass to C conversion factor, the belowground C stock would have

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Section: Soc Stocksupporting

confidence: 92%

Section: Soc Stockmentioning

confidence: 99%

Tissue-specific carbon concentration, carbon stock, and distribution in Cunninghamia lanceolata (Lamb.) Hook plantations at various developmental stages in subtropical China

Zhou

Liu

et al. 2019

Annals of Forest Science

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“…Analysis of such changes is important to ensure regional ecological security and to promote the coordinated development of the regional society, economy and ecology. This study also shows that ecosystems with large carbon reserves may not exhibit high carbon sequestration, which is consistent with the result of an earlier study [55]. Studying the supply and demand of carbon storage and storage services in the QLB, so as to mitigate climate change in the QTP's ecological environment, reducing the emission level of carbon, and improving storage capacity, are all essential measures for improving global ecological services in sensitive areas.…”

Section: Measurement Of Carbon Storage In the Qlbsupporting

confidence: 90%

Carbon Dynamics in the Northeastern Qinghai–Tibetan Plateau from 1990 to 2030 Using Landsat Land Use/Cover Change Data

Gong

Guldmann

et al. 2020

Remote Sensing

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Land use/cover change (LUCC) has an important impact on the terrestrial carbon cycle. The spatial distribution of regional carbon reserves can provide the scientific basis for the management of ecosystem carbon storage and the formulation of ecological and environmental policies. This paper proposes a method combining the CA-based FLUS model and the Integrated Valuation of Ecosystem Services and Trade-offs (InVEST) model to assess the temporal and spatial changes in ecosystem carbon storage due to land-use changes over 1990–2015 in the Qinghai Lake Basin (QLB). Furthermore, future ecosystem carbon storage is simulated and evaluated over 2020–2030 under three scenarios of natural growth (NG), cropland protection (CP), and ecological protection (EP). The long-term spatial variations in carbon storage in the QLB are discussed. The results show that: (1) Carbon storage in the QLB decreased at first (1990–2000) and increased later (2000–2010), with total carbon storage increasing by 1.60 Tg C (Teragram: a unit of mass equal to 1012 g). From 2010 to 2015, carbon storage displayed a downward trend, with a sharp decrease in wetlands and croplands as the main cause; (2) Under the NG scenario, carbon reserves decrease by 0.69 Tg C over 2020–2030. These reserves increase significantly by 6.77 Tg C and 7.54 Tg C under the CP and EP scenarios, respectively, thus promoting the benign development of the regional ecological environment. This study improves our understanding on the impact of land-use change on carbon storage for the QLB in the northeastern Qinghai–Tibetan Plateau (QTP).

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“…In wetland ecosystems, the concentrations of the SOC fractions have changed due to species invasion (Cheng et al 2008;Yang et al 2017a), salinity increase (Yang et al 2018) and land reclamation (Huo et al 2018;Zhang et al 2018). SOC LF I and LF II decreased due to a decrease in the organic matter input combined with the fast mineralisation of soil organic matter (SOM) during the conversion of pasture lands to agricultural lands, degradation of natural forest and tillage (Liu et al 2017;Muñoz-Romero et al 2017;Nath et al 2018). In this study, although the concentrations of LOC (including SOC LF I and SOC LF II) in the LDM decreased slightly compared to PRM (P > 0.05; Fig.…”

Section: Effects Of Marsh Degradation On the Concentrations Of Soc Frmentioning

confidence: 99%

Response of the Organic Carbon Fractions and Stability of Soil to Alpine Marsh Degradation in Zoige, East Qinghai-Tibet Plateau

Zhang

et al. 2020

J Soil Sci Plant Nutr

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Soil organic carbon (SOC) fractions play a crucial role in the carbon cycle of alpine wetland ecosystems and regional climate regulation. In the last decades, alpine marshes at Tibetan Plateau have undergone increased degradation. The effects of marsh degradation on soil labile and recalcitrant organic carbon fractions and on SOC stability remain unclear. In this study, we investigated changes in SOC fractions with different biochemical recalcitrance and stability in the marsh ecosystems with various levels of degradation in the Zoige Wetland, Eastern Qinghai-Tibet Plateau. Soil samples of relatively pristine marsh (RPM), lightly degraded marsh (LDM), moderately degraded marsh (MDM), heavily degraded marsh (HDM) and severely degraded marsh (SDM) were collected and analysed using the acid hydrolysis method. Compared with RPM, the concentrations of SOC labile fraction I (non-cellulosic polysaccharides), SOC labile fraction II (cellulose) and recalcitrant organic carbon (ROC) in degraded marshes decreased significantly: 29-97, 38-95 and 32-99%, respectively, except for the LDM. The SOC recalcitrance index (RIc) in the HDM and SDM was significantly lower than that in RPM by 11-35 and 15-47%, respectively; compared with RPM, the stability of organic carbon was significantly lower in the HDM and SDM. Additionally, the marsh degradation increased vertical variation in the concentrations of SOC fractions. The degradation of alpine marshes decreases the capacity for carbon (C) sequestration via decreasing the resistance of SOC to biodegradation, indicating that the alpine marsh degradation may weaken the carbon sink capacity of the Zoige Plateau, thus aggravating the global greenhouse effect. Keywords Zoige. Marsh degradation. Labile organic carbon. Recalcitrant organic carbon. Soil organic carbon stability Highlights • Concentrations of labile and recalcitrant SOC decreased with marsh degradation. • Vertical variation in labile and recalcitrant SOC increased in degraded marshes. • Resistance of SOC to biodegradation decreased after marsh was moderately degraded. • Marsh degradation reduced the capacity of SOC sequestration.

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Impact of land use changes on the storage of soil organic carbon in active and recalcitrant pools in a humid tropical region of India

Cited by 104 publications

References 47 publications

Tissue-specific carbon concentration, carbon stock, and distribution in Cunninghamia lanceolata (Lamb.) Hook plantations at various developmental stages in subtropical China

Tissue-specific carbon concentration, carbon stock, and distribution in Cunninghamia lanceolata (Lamb.) Hook plantations at various developmental stages in subtropical China

Carbon Dynamics in the Northeastern Qinghai–Tibetan Plateau from 1990 to 2030 Using Landsat Land Use/Cover Change Data

Response of the Organic Carbon Fractions and Stability of Soil to Alpine Marsh Degradation in Zoige, East Qinghai-Tibet Plateau

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