Effects of harvest residue management on soil carbon and nitrogen processes in a Chinese fir plantation

Hu, Zhenhong; Zhu, He; Huang, Zhiyin; Fan, Shaohui; Yu, Zaipeng; Wang, Minhuang; Zhou, Xuhui; Fang, Changming

doi:10.1016/j.foreco.2014.04.023

Cited by 25 publications

(12 citation statements)

References 46 publications

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“…In this study, we found that WTH had significant and negative impacts on SOC and TN, with SOC in the 0‐ to 30‐cm and TN in the 0‐ to 20‐cm soil layer decreasing significantly with increasing thinning intensities (Table ), confirming the results of previous research. Additionally, we found that the impacts of WTH on SOC and TN were greater in the upper than in the lower soil, which was also observed in numerous studies in temperate zones (Hu et al, ; Nave et al, ). Soil organic matter in forest systems often has lower molecular complexity and shorter turnover times in topsoil than in subsoil, and the abundance of labile substrate in the topsoil may stimulate a more quick microbial response following disturbance, which would cause the topsoil to be more vulnerable to organic matter decline than the subsoil following logging (Hu et al, ).…”

Section: Discussionsupporting

confidence: 88%

“…A net SOC and TN decrease was frequently observed following the removal of organic residues and the effects dependent upon harvesting types (Hu et al, ; Nave et al, ). Due to a greater export from the site of the nutrient‐rich aboveground biomass, especially needles and twigs, WTH was often associated with a decline in soil C and N pools (Saarsalmi, Tamminen, Kukkola, & Hautajarvi, ).…”

Section: Discussionmentioning

confidence: 99%

“…A meta‐analysis at a global scale by D. W. Johnson and Curtis () revealed significant effects of harvest type on soil C and N, with stem‐only harvesting resulting in increases (18%) and whole‐tree harvesting (WTH) in decreases (6%) in soil C and N. Many studies have shown that soil water, acidity, and nutrient pools were also sensitive to thinning and the responses were often site‐specific (Baena et al, ; Kaarakka et al, ; Panosso et al, ). Currently, most of the studies have focused on responses in the first few years after thinning and changes in topsoil (e.g., 0–10 cm), but long‐term effects (>10 years) and responses of subsoil are still not well known (Hu et al, ; Jandl et al, ; Wall, ). Thus, data are needed from long‐term thinning experiments in different site conditions and in deep soil layers to extend our knowledge about the consequences of thinning.…”

Section: Introductionmentioning

confidence: 99%

“…Currently, most of the studies have focused on responses in the first few years after thinning and changes in topsoil (e.g., 0-10 cm), but long-term effects (>10 years) and responses of subsoil are still not well known (Hu et al, 2014;Jandl et al, 2007;Wall, 2012). Thus, data are needed from long-term thinning experiments in different site conditions and in deep soil layers to extend our knowledge about the consequences of thinning.…”

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confidence: 99%

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Responses of soil organic carbon, soil respiration, and associated soil properties to long‐term thinning in a semiarid spruce plantation in northwestern China

Chen

et al. 2018

Land Degrad Dev

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Silvicultural thinning using whole‐tree harvesting (WTH) has been an important and common forest management practice for Picea crassifolia plantations in the Qilian Mountains of China. However, consequences of this silvicultural practice are still not well known. We examined the influence of three thinning levels on long‐term soil carbon storage, soil respiration (Rs), and soil properties. Our results showed that soil carbon stocks decreased significantly with increasing thinning intensity at a soil depth of 0–70 cm, whereas soil water storage increased, especially in the deep soil layers (30–70 cm). Mean Rs rates during the growing season increased significantly with increasing thinning intensity, and the dynamics of Rs coincided with that of soil temperature. Generally, 65% to 73% of the variation in Rs rates in three thinning levels was explained by the changes in soil temperature. WTH significantly increased soil bulk density at the 0‐ to 30‐cm and soil pH at the 0‐ to 20‐cm depths and significantly decreased soil nitrogen and C:N ratio in the 0‐ to 20‐cm layers. As no significant effect of WTH was detected on fine root biomass, we attributed the elevated soil respiration to accelerated decomposition of organic matter as a result of elevated soil temperature and substrate quality. Our results demonstrate the potential for WTH to relieve water deficits in spruce plantations in semiarid regions but suggest that WTH has a negative impact on carbon sequestration.

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Section: Discussionsupporting

confidence: 88%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

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Responses of soil organic carbon, soil respiration, and associated soil properties to long‐term thinning in a semiarid spruce plantation in northwestern China

Chen

et al. 2018

Land Degrad Dev

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“…Hook. ), an evergreen conifer, is one of the most important forest plantations in southern China, covering an area of over 12 million ha or about 6.5% of the world's plantation forests [13]. These forests are nutrient-poor, with shallow fertile soils [14].…”

Section: Introductionmentioning

confidence: 99%

Excessive Accumulation of Chinese Fir Litter Inhibits Its Own Seedling Emergence and Early Growth—A Greenhouse Perspective

Liu

Daryanto

Wang

et al. 2017

Forests

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Litter accumulation can strongly influence plants' natural regeneration via both physical and chemical mechanisms, but the relative influence of each mechanism on seedling establishment remains to be elucidated. Chinese fir (Cunninghamia lanceolata) is one of the most important commercial plantations in southern China, but its natural regeneration is poor, possibly due to its thick leaf litter accumulation. We used natural and plastic litter to study the effects of Chinese fir litter on its own seedling emergence and early growth, as well as to assess whether the effect is physical or chemical in nature. Results showed that high litter amount (800 g·m −2 ) significantly reduced seedling emergence and the survival rate for both natural and plastic litter. Low litter amount (200 g·m −2 ) exerted a slightly positive effect on root mass, leaf mass, and total mass, while high litter amount significantly inhibited root mass, leaf mass, and total mass for both natural and plastic litter. Root-mass ratio was significantly lower, and leaf-mass ratio was significantly greater under high litter cover than under control for both natural and plastic litter. Although the root/shoot ratio decreased with increasing litter amount, such effect was only significant for high litter treatment for both natural and plastic litter. Seedling robustness (aboveground biomass divided by seedling height) decreased with increasing litter amount, with high litter treatment generating the least robust seedlings. Because plastic and natural litter did not differ in their effects on seedling emergence and growth, the litter layer's short-term influence is primarily physical. These data indicated that as litter cover increased, the initial slightly positive effects on seedling emergence and early growth could shift to inhibitory effects. Furthermore, to penetrate the thick litter layer, Chinese fir seedlings allocated more resources towards stems and aboveground growth at the expense of their roots. This study provided experimental evidence of litter amount as a key ecological factor affecting seedling development and subsequent natural regeneration of Chinese fir.

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Soil nitrogen forms and their coupling relationships during the growing season of a Larix principis-rupprechtii plantation at different growth stages and stand densities

et al. 2023

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Effects of harvest residue management on soil carbon and nitrogen processes in a Chinese fir plantation

Cited by 25 publications

References 46 publications

Responses of soil organic carbon, soil respiration, and associated soil properties to long‐term thinning in a semiarid spruce plantation in northwestern China

Responses of soil organic carbon, soil respiration, and associated soil properties to long‐term thinning in a semiarid spruce plantation in northwestern China

Excessive Accumulation of Chinese Fir Litter Inhibits Its Own Seedling Emergence and Early Growth—A Greenhouse Perspective

Soil nitrogen forms and their coupling relationships during the growing season of a Larix principis-rupprechtii plantation at different growth stages and stand densities

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