Seasonal changes in soil labile organic carbon pools within a Phyllostachys praecox stand under high rate fertilization and winter mulch in subtropical China

Jiang, Peikun; Xu, Qiufang; Xu, Zhenbo; Cao, Zhaoliang

doi:10.1016/j.foreco.2006.06.010

Cited by 143 publications

(72 citation statements)

References 12 publications

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“…Because WSOC could be both a product of and substrate for soil microbes, the lower WSOC in the rainy season could have been caused by the extensive consumption of WSOC at the early-rainy season or the low microbial production of WSOC (Montan˜o et al 2007). At our site, earlier research by Jiang et al (2006) found that there was twice as much microbial biomass in August than in April in BF that was applied with organic and inorganic amendments. The lower WSOC and WSON in the warmer and wetter season ( Fig.…”

Section: Discussion Seasonal Patterns Of Wsoc Wson and Wsoc: Wson Ramentioning

confidence: 56%

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Dissolved soil organic carbon and nitrogen were affected by conversion of native forests to plantations in subtropical China

Wu¹,

Jiang²,

Chang³

et al. 2010

Can. J. Soil. Sci.

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. 2010. Dissolved soil organic carbon and nitrogen were affected by conversion of native forests to plantations in subtropical China. Can. J. Soil Sci. 90: 27Á36. To better understand the impact of converting native forests to intensively managed plantations on soil carbon (C) and nitrogen (N) dynamics in subtropical China, we examined the seasonal patterns of water-soluble organic C (WSOC) and N (WSON) concentrations in soils in Chinese chestnut (Castanea mollissima Blume) (CF) and bamboo (Phyllostachys praecox C.D. Chu & C.S. Chou) plantation forests (BF) and adjacent native evergreen broadleaf forests (NF) in Ling-long Mountain, Zhejiang Province, China. The plantations were disturbed through surface soil removal and were fertilized and/or mulched, from which economic products (such as nuts and bamboo shoots) were annually harvested. We found that WSOC and WSON had large seasonal variations and were lower in the warmer than in the colder season. Average WSOC concentrations followed the order of BF (58.6)!NF (35.1)!CF (18.1 mg C kg Á1 ), a pattern mainly caused by mulching in BF in winter and the removal of surface soil in CF. Soil total C and N followed the order of BF !NF !CF. The extensive inorganic and organic fertilizer application in BF caused WSON concentrations to be 21 and 14 times higher than those in NF and CF, respectively. Conversion of native forests to plantations lowered soil WSOC:WSON and soil C:N ratios. The seasonal dynamics of WSOC:SOC (soil organic C) and WSON/TN ratios followed the same patterns of WSOC and WSON, respectively. The impacts of forest types on WSOC/SOC ratio, which is a measure of the quality of organic matter, were dependent on seasonal changes of management practices and/or tree growth. Nevertheless mean annual WSON/TN ratios of BF and CF were 2 and 12 times that of NF, indicating that a greater proportion of the total soil N pool became solubilized in the intensively managed plantations. We conclude that land-use conversion and associated management practices had a profound impact on WSOC, WSON, and total C and N concentrations in the studied forest soils in subtropical China.Key words: Forest management, water-soluble organic C, water-soluble organic N, WSOC/WSON ratio Wu, J.-S., Jiang, P.-K., Chang, S. X., Xu, Q.-F. et Lin, Y. 2010. La transformation des foreˆts naturelles en plantations dans la Chine subtropicale affecte le carbone et l'azote dissous dans le sol. Can. J. Soil Sci. 90: 27Á36. Pour mieux comprendre les conse´quences de la conversion des foreˆts naturelles en plantations intensives sur la dynamique du carbone (C) et de l'azote (N) dans le sol de la Chine subtropicale, les auteurs ont e´tudie´la variation saisonnie`re de la concentration du C hydrosoluble dans le sol (CCHS) et du N hydrosoluble dans le sol (CNHS) dans les foreˆts cultive´es de chaˆtaignier de Chine (Castanea mollissima Blume) (FC) et de bambou (Phyllostachys praecox C.D. Chu & C.S. Chou) (FB) ainsi que dans les foreˆts naturelles (FN) de conife`res latifolie´s adjacentes du mont Ling-long,...

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Section: Discussion Seasonal Patterns Of Wsoc Wson and Wsoc: Wson Ramentioning

confidence: 56%

“…Chu & C.S. Chou (a bamboo species) have been planted in Zhejiang Province, China (Jiang et al 2006;Peng et al 2000). By converting native evergreen broadleaf forests (NF) that dominate the landscape to plantations of economic species such as for the production of chestnuts and bamboo shoots, the income of local farmers has been substantially increased.…”

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confidence: 99%

Dissolved soil organic carbon and nitrogen were affected by conversion of native forests to plantations in subtropical China

Wu¹,

Jiang²,

Chang³

et al. 2010

Can. J. Soil. Sci.

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“…Dissolved organic C (DOC) was extracted from 10 g of fresh soil with 1:3 ratio of soil to water (Jiang et al, 2006). After the soil was shaken at 250 r min −1 for 1 h and centrifuged at 4,500×g for 10 min, the supernatant was filtered using a 0.45-μm membrane filter.…”

Section: Sampling and Analytical Methodsmentioning

confidence: 99%

Effects of different no-tillage modes on soil CO2 fluxes from paddy fields in central China

Guo

Zhang

et al. 2015

J. Soil Sci. Plant Nutr.

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Differences in soil CO 2 emissions between no-tillage (NT) and conventional intensive tillage have been well assessed in paddy fields, but few studies evaluate the effects of different NT modes on soil CO 2 emissions. Therefore, a field experiment was conducted to assess paddy soil CO 2 flux as affected by different NT modes [ridge cultivation with NT (RNT) and conventional flat cultivation with NT (FNT)] and its influencing factors during the 2012-2014 rice growing seasons in central China. Soil CO 2 fluxes were determined by a LI-8100A soil CO 2 flux system. The mean soil CO 2 fluxes on the ridges in the RNT treatment increased by 49%, 52% and 35% compared with those on the flat land in the FNT treatment in 2012, 2013 and 2014, respectively. Cumulative CO 2 emissions ranged from 1042 g m -2 to 1489 g m -2 from the RNT treatment, and from 724 g m -2 to 1016 g m -2 for the FNT treatment. Moreover, soil CO 2 its emissions were significantly correlated with dissolved organic C, aboveground biomass and root biomass. Therefore, our results suggesting that annual rice-fallowoilseed rape rotation should be considered to assess the effects of tillage systems on soil CO 2 emission.

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“…Temperature can affect soil DOM concentration and turnover by controlling microbial biomass [36]. Jiang et al [37] found that there was twice as much microbial biomass in summer than in spring in Moso bamboo plantations; thus, the high temperature in July (Table 1) might have contributed to the high DOC and DON. Furthermore, compared with spring, summer and winter had lower precipitation (Table 1), thereby inducing a smaller leaching loss of DOC and DON.…”

Section: Effects Of Management Practices On Soil Doc and Donmentioning

confidence: 99%

Effects of Nitrogen Deposition on Soil Dissolved Organic Carbon and Nitrogen in Moso Bamboo Plantations Strongly Depend on Management Practices

Lei

Sun

et al. 2017

Forests

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Soil dissolved organic carbon (DOC) and nitrogen (DON) play significant roles in forest carbon, nitrogen and nutrient cycling. The objective of the present study was to estimate the effect of management practices and nitrogen (N) deposition on soil DOC and DON in Moso bamboo (Phyllostachys edulis (Carrière) J. Houz) plantations. This experiment, conducted for over 36 months, investigated the effects of four N addition levels (30, 60 and 90 kg N ha −1 year −1 , and the N-free control) and two management practices (conventional management (CM) and intensive management (IM)) on DOC and DON. The results showed that DOC and DON concentrations were the highest in summer. Both intensive management and N deposition independently decreased DOC and DON in spring (p < 0.05) but not in winter. However, when combined with IM, N deposition increased DOC and DON in spring and winter (p < 0.05). Our results demonstrated that N deposition significantly increased the loss of soil DOC and DON in Moso plantations, and this reduction was strongly affected by IM practices and varied seasonally. Therefore, management practices and seasonal variation should be considered when using ecological models to estimate the effects of N deposition on soil DOC and DON in plantation ecosystems.

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Seasonal changes in soil labile organic carbon pools within a Phyllostachys praecox stand under high rate fertilization and winter mulch in subtropical China

Cited by 143 publications

References 12 publications

Dissolved soil organic carbon and nitrogen were affected by conversion of native forests to plantations in subtropical China

Dissolved soil organic carbon and nitrogen were affected by conversion of native forests to plantations in subtropical China

Effects of different no-tillage modes on soil CO2 fluxes from paddy fields in central China

Effects of Nitrogen Deposition on Soil Dissolved Organic Carbon and Nitrogen in Moso Bamboo Plantations Strongly Depend on Management Practices

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