Dynamics of Non-Structural Carbohydrates Release in Chinese Fir Topsoil and Canopy Litter at Different Altitudes

Xin-rong, WU; Cao, Yue; Jiang, Yu; Chen, Mingxu; Zhang, Huiguang; Wu, Pengfei; Ma, Xiangqing

doi:10.3390/plants12040729

Cited by 7 publications

(3 citation statements)

References 31 publications

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“…We took the Chinese fir litter back to the laboratory, separated the twigs and leaves, and air-dried them. In this study, twigs and leaves were placed into nylon decomposition bags with a size of 20 × 20 cm and a mesh size of 0.5 mm, and each bag weighed 10 g ± 0.005 air-dried (2.5 and 7.5 g of twigs and leaves, respectively) [23]. Five bags of the prepared samples were used to determine the initial nutrients.…”

Section: Experimental Designmentioning

confidence: 99%

Effects of Simulated Warming on Bacterial Community Structure in Litters of Chinese Fir Based on Displacement Test

Wu,

Li,

Zhu

et al. 2024

Forests

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Bacterial communities are vital factors for regulating litter decomposition in forests. With the gradual increase in global climate change, the effects of global warming on the decomposition of forest litter have become a cause for concern. In this study, we used a displacement test to simulate the effects of warming (+2.5, +4.6, and +6.5 °C) on the composition and diversity of bacterial communities in Chinese fir litters based on the natural differences in temperature between the elevation of Wuyi Mountain. Warming significantly increased the abundance and diversity of bacterial communities and altered the functional abundance of bacterial communities. Warming significantly increased the relative abundance of Acidothermus and decreased that of Bacteroidetes and Mucilaginibacter. Structural variations in the bacterial communities were closely related to the chemical properties of the litter. The relative abundance of Planctomycetes exhibited a positive association with nitrogen content and a negative association with cellulose content, whereas phosphorus content was the main driving factor of Acidothermus abundance. Warming increased the complexity of the bacterial community structure, which promoted the decomposition of Chinese fir litter and accelerated nutrient cycling in the Chinese fir plantation ecosystem.

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Section: Experimental Designmentioning

confidence: 99%

Effects of Simulated Warming on Bacterial Community Structure in Litters of Chinese Fir Based on Displacement Test

Wu,

Li,

Zhu

et al. 2024

Forests

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“…It is indigenous to China, Vietnam (northern regions) and partially found in Laos and Cambodia. This species holds great significance as a timber resource in South China, playing a vital role in the country's forestry development and ecological stability [20]. Notably, Chinese fir exhibits robust growth characteristics and offers excellent raw materials.…”

Section: Introductionmentioning

confidence: 99%

Ecological Stoichiometry of N and P across a Chronosequence of Chinese Fir Plantation Forests

Cao,

Yan,

Farooq

et al. 2023

Forests

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Ecological stoichiometry is crucial in understanding nutrient dynamics and its impact on plant growth and development at various ecological scales. Among the different nutrients, nitrogen (N) and phosphorus (P) have been widely recognized as key elements regulating substance transport, energy utilization, and ecosystem conversion. The N:P ratio in plants serves as a sensitive indicator of ecological processes, reflecting the availability and balance of these nutrients. Therefore, studying the ecological stoichiometry of N and P is essential for accurately assessing soil fertility and site productivity, particularly in forest ecosystems with low-fertility soils. In this study conducted in Huitong, Hunan province, southern China, the contents of N and P, as well as the N:P ratios, were investigated in plant-soil systems across four different aged stands of Chinese fir forests (3-, 8-, 18-, and 26-year-old stands). The results revealed varying concentrations of N and P in soils and foliage across the different plantations. Soil N concentrations increased by approximately 4%, 30%, and 22% in 8-, 18-, and 26-year-old plantations compared to the 3-year-old plantation. Soil P concentration was significantly higher in 8-, 18-, and 26-year-old plantations compared to the 3-year-old plantation. The average soil N:P ratio followed the order of 3-year-old plantation > 18-year-old plantation > 26-year-old plantation > 8-year-old plantation. Regarding foliage, both N and P contents exhibited a similar pattern across the different aged leaves, with current-year-old leaves having higher concentrations than 1-year-old, 2-year-old, and 3-year-old leaves in all four Chinese fir plantations. The study further established relationships between soil and foliage nutrient ratios. Soil N:P ratio was positively correlated with soil N content but negatively associated with soil P content. The foliage N:P ratio also showed a significant negative correlation between leaf N and foliage P content. These findings suggest that soil nutrient conditions improved with the aging of Chinese fir plantations, mainly due to increased inputs of above- and below-ground litter. Overall, this study provides valuable insights into the ecological stoichiometry of N and P in Chinese fir plantations, offering a scientific basis for sustainable forest management practices in southern China.

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“…A strong factor is also anthropogenic loading on the forest ecosystems (Hedwall et al, 2019). Classic forest-science studies and modern specialists (Chevaux et al, 2022;Zlobin et al, 2022) identified that the main types of such effects of plants of one stratum on plants of another stratum are: a) effects of upper-stratum plants on the lower ones through light reduction, increased root competition for water and nutrients in the soil, formation of a specifically structured forest litter, and formation of a certain allelopathic biochemical environment (Schönbeck et al, 2021;Wu et al, 2023); b) influence of lower-stratum plants on the upper-stratum plants through reduction of potential niches of recovery of tree species and control of development of their undergrowth.…”

Section: Introductionmentioning

confidence: 99%

Influence of tree-crown density on dominant plant species of the herb-shrub stratum in the zone of mixed forests

Kovalenko,

Kyrylchuk,

Klymenko

et al. 2023

Biosys. divers.

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Forest ecosystems are among the most complex and dynamic biological systems of our planet. They play an important role in sustaining biodiversity, regulating the climate, and preserving water resources. Furthermore, they serve as natural filters, improving the quality of soil and air, and also preventing erosive processes. Forests create unique conditions for life of various species of plants and animals, which contributes to maintenance of the natural biodiversity and supports the stability of the ecosystem. Likewise, forests are important for the carbon cycle. They absorb a large amount of carbon, thus hindering global warming. Therefore, forest ecosystems are of paramount ecological value and their preservation is crucial for a balanced functioning of the planet. Our studies were carried out in the forest ecosystems of the Desna-Starohutskyi National Park, which is in the Ukrainian Polissia. The materials and methods of the study included systematic collection of the data on density of tree crowns, and also records of diversity of plants of the herb-shrub stratum in the chosen forest areas. Those data were analyzed using statistical methods. The study results revealed that the crown density has a significant effect on diversity of herb-shrub plants in the lower forest strata. Increase in crown density correlated with decrease in the light availability in the herb-shrub stratum. Change in the crown density towards increase significantly altered the conditions for competition between herbaceous and shrub species. Decrease in light availability led to shift in the competition ratio between the species, promoting dominance of more shade-loving species. Increase in crown density, which often reached 100%, made the competition more severe, especially for key resources (light, water, and nutrients). Because of this, species diversity in the herb-shrub stratum of the forest ecosystems was observed to decrease, and less adapted species were extruded. In general, change in tree-crown density in the forest ecosystem had a significant effect on the dynamics of herbaceous and shrub species, changing competitive relations and the structure of those plant communities. The results we obtained expand the knowledge about interactions between crown density and the structure of herb-shrub stratum, which gives perspectives for more efficient management of forest resources, and can also improve scientific identification and implementation of measures for protection of forest ecosystems.

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Dynamics of Non-Structural Carbohydrates Release in Chinese Fir Topsoil and Canopy Litter at Different Altitudes

Cited by 7 publications

References 31 publications

Effects of Simulated Warming on Bacterial Community Structure in Litters of Chinese Fir Based on Displacement Test

Effects of Simulated Warming on Bacterial Community Structure in Litters of Chinese Fir Based on Displacement Test

Ecological Stoichiometry of N and P across a Chronosequence of Chinese Fir Plantation Forests

Influence of tree-crown density on dominant plant species of the herb-shrub stratum in the zone of mixed forests

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