Harvest residue management effects on tree growth and ecosystem carbon in a Chinese fir plantation in subtropical China

Huang, Zhiqun; Zhu, He; Wan, Xiaohua; Hu, Zhenhong; Fan, Shaohui; Yang, Yusheng

doi:10.1007/s11104-012-1341-1

Cited by 46 publications

(16 citation statements)

References 36 publications

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“…Hook) is a native conifer timber species and has been widely planted in subtropical China for more than 1000 years due to its fast growth and good timber quality. Cunninghamia lanceolata plantations now cover 9.11 million hectares and account for more than 18 % of all forest plantations in China and 5 % of all plantations in the world (Huang et al 2013b). Field observations suggest that growth of C. lanceolata after harvest and replanting is significantly reduced and this problem occurs in many C. lanceolata growing regions (Fang 1987), which has drawn considerable attention (Zhang 1997;Huang et al 2000a).…”

Section: Introductionmentioning

confidence: 99%

Soil C:N ratio is the major determinant of soil microbial community structure in subtropical coniferous and broadleaf forest plantations

et al. 2014

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Aims This study aimed to determine the influence of tree species on soil microbial community structure. Methods We conducted a litter and root manipulation and a short-term nitrogen (N) addition experiment in 19-yearold broadleaf Mytilaria laosensis (Hamamelidaceae) and coniferous Chinese fir (Cunninghamia lanceolata) plantations in subtropical China. Phospholipid fatty acid (PLFA) analysis was used to examine treatment effects on soil microbial community structure. Redundancy analysis (RDA) was performed to determine the relationships between individual PLFAs and soil properties (soil pH, carbon (C) and N concentration and C:N ratio). ResultsSoil C:N ratio was significantly greater in M. laosensis (17.9) than in C. lanceolata (16.2). Soil C:N ratio was the key factor affecting the soil microbial community regardless of tree species and the litter, root and N treatments at our study site. The fungal biomarkers, 18:1ω9 and 18:2ω6,9 were significantly and positively related to soil C:N ratio and the abundance of bacterial lipid biomarkers was negatively related to soil C:N ratio. N addition for 8 months did not change the biomass and structure of the microbial community in M. laosensis and C. lanceolata soils. Soil nutrient availability before N addition was an important factor in determining the effect of N fertilization on soil microbial biomass and activity. PLFA analysis showed that root exclusion significantly decreased the abundance of the fungal biomarkers and increased the abundance of the Gram-positive bacteria. Rootless plots had a relatively lower Gram-positive to Gram-negative bacteria ratio and a higher fungi to bacteria ratio compared to the plots with roots under both M. laosensis and C. lanceolata. The response of arbuscular mycorrhizal fungi (16:1ω5) to root exclusion was species-specific. Conclusions These observations suggest that soil C:N ratio was an important factor in influencing soil microbial community structure. Further studies are required to confirm the long-term effect of tree species on soil microbial community structure.

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Section: Introductionmentioning

confidence: 99%

Soil C:N ratio is the major determinant of soil microbial community structure in subtropical coniferous and broadleaf forest plantations

et al. 2014

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“…In addition, the lands with the territory of the legume residues returned to the soil, has higher organic carbon. Huang et al (2013) conducted that soil carbon stocks in the 0-10 cm of soil depth has not a significant difference with stubble burning and residue removal at the level of 5% because stubble burning decreases of organic residues and residue removal leads to biomass and soil respiration reduction.…”

Section: Model Evaluationmentioning

confidence: 99%

Modeling of Soil Carbon Storage Capacity Using Farm Management Factors in Drylands

Sokouti¹,

Kaveh²,

Parvizi³

2017

AgricultForest

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SUMMARYThe Carbon Storage Capacity (CSC) of land ecosystems is considered as the criteria for dry land sustainability assessment through analyzing of its management factors. We studied the commonly used management systems and their affected factors to model soil carbon storage in Sarfirooz-abad watershed, Kermanshah province, IRAN. GIS layers of slope degree, slope direction and elevation created, combined and used as the homogeneous map units. Three field management systems of tillage, crop rotation and residual management were defined and their relevant indicators were quantified. The systematic random method was used for soil sampling and 95 composite soil samples were taken from 0-30cm soil depth. In the laboratory, bulk density, texture and organic carbon content of soils was determined and soil organic carbon storage stocks was calculated. To estimate and model the carbon storage capacity and factors affecting, it was studied by stepwise regression, factor analysis and clustering. Results showed that using cluster analysis by seven variables of 15 variables has the significant relation with CSC with a correlation coefficient of 0.724 including plow index, cereals in crop rotation, stubble burning, animal fertilizer, crop rotation, winter fallow and plow direction. The cluster model efficiency of 0.46 was obtained that could predict about 52% of the CSC variability. The crop rotation and tillage were the variables of precise agricultural systems management that is undoubtedly important in CSC of dry lands.

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“…In some cases, no losses in soil C or nutrient stocks have been reported, even with increases in nutrients exported during harvest [4,14,[29][30][31][32][33]. This observation has been attributed to several mechanisms: high buffer capacity of the soil, slow decomposition of forest residues, a long harvesting return interval (more than seven years), and fast growth and litter deposition from new Eucalyptus plantations.…”

Section: Effects Of Harvest Residue Strategies On Soil C and Availablmentioning

confidence: 99%

“…Despite the small effect of whole-tree harvest on the soil nutrient stocks described by many authors [4,14,[29][30][31][32][33], this and other studies emphasize the importance of the maintenance of forest residues on the soil, especially in tropical sites with low buffer capacity soils, high productivity, and short cycle plantations [14,16,[29][30][31]33]. In these sites, removal of forest residues can result in loss of wood productivity of up to 40% due to the low nutrient pools remaining in the soil [16].…”

Section: Management Considerationsmentioning

confidence: 99%

Effect of Timber Harvest Intensities and Fertilizer Application on Stocks of Soil C, N, P, and S

Menegale

Rocha

Harrison

et al. 2016

Forests

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Abstract:The purpose of this study was to determine the stocks of available P and S, total N, and oxidizable C at depth in an Oxisol cultivated with Eucalyptus in Brazil following different timber harvest intensities and fertilizer application over 12 years. The harvest regimes considered were (i) conventional stem-only harvest (all forest residues were maintained on the soil); (ii) whole-tree harvest (only litter was maintained on the soil-all slash, stemwood, and bark were removed); and (iii) whole-tree harvest + litter layer removal. The site was planted in 2004 considering three timber harvest intensities, some with and some without N and P fertilization. In 2012 the experiment was reinstalled, and all the treatments were reapplied in the each plot. From 2004 to 2016, nutrient accumulation and soil N, P, and S stocks were assessed in the 0-20 cm layer. Also in 2016, soil N, P, S, and oxidizable C stocks were measured to 2 m depth. For each treatment, the net balance of N, P, and S were calculated from soil stocks and harvest outputs during two forest rotations. A reduction in all nutrient stocks was observed in the 0-20 cm layer for all treatments. For N, this reduction was 20% smaller in the stem-only harvest treatment and 40% higher when no N fertilizer was applied, when compared to other treatments. Stem-only harvest treatment was observed to reduce the loss of N, P, and S due to harvest by 300, 30, and 25 kg·ha −1 , respectively, when compared to the whole-tree harvest + litter layer removal treatment.

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Harvest residue management effects on tree growth and ecosystem carbon in a Chinese fir plantation in subtropical China

Cited by 46 publications

References 36 publications

Soil C:N ratio is the major determinant of soil microbial community structure in subtropical coniferous and broadleaf forest plantations

Soil C:N ratio is the major determinant of soil microbial community structure in subtropical coniferous and broadleaf forest plantations

Modeling of Soil Carbon Storage Capacity Using Farm Management Factors in Drylands

Effect of Timber Harvest Intensities and Fertilizer Application on Stocks of Soil C, N, P, and S

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