Impacts of Site Conditions and Stand Structure on the Biomass Allocation of Single Trees in Larch Plantations of Liupan Mountains of Northwest China

Wang, Xiao; Huang, Xiaonan; Wang, Yanhui; Yu, Pengtao; Guo, Junhong

doi:10.3390/f13020177

Cited by 9 publications

(6 citation statements)

References 53 publications

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“…However, roots may account for a significant proportion of the whole tree biomass and carbon storage [59,60], which has essential effects on the biomass proportion of various organs of trees. Previous studies have shown that the biomass proportions of roots to total tree biomass decreased with stand age [34,48,53]. However, some studies have observed that its biomass proportion exhibited a slight increase with tree growth [50].…”

Section: Discussionmentioning

confidence: 97%

“…Additionally, more detailed information on the spatial allocation patterns of biomass in different organs has been continuously provided [28]. Previous studies have shown that the allocation pattern of forest biomass in different organs is affected by tree species [18], stand age [29,30], stand density [31], light environments [32], precipitation [33] and site conditions [34]. However, different researchers have obtained varied conclusions, which may be related to specific tree species and site conditions, but the specific tree traits that drive this variation remain poorly understood [35].…”

Section: Introductionmentioning

confidence: 99%

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Allocation Patterns and Temporal Dynamics of Chinese Fir Biomass in Hunan Province, China

Deng

et al. 2023

Forests

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How trees allocate their biomass among different components has important implications for their survival and growth and ecosystem carbon cycling. Data on the distribution pattern and dynamics of tree biomass are essential for fully exploiting forest carbon sequestration potential and achieving the goal of carbon neutralization. However, there has not been enough research to-date on tree biomass spatial allocation and temporal dynamics in different site qualities at specific tree species scales. This study aimed to evaluate the biomass allocation patterns within tree components of Chinese fir and to examine how they are affected by tree age and site quality. A total of 87 trees were destructively sampled and measured for stem, branch, leaf, bark and root biomass. The biomass proportion difference of tree components in different age stages (8-40 years) was analysed, and the influence process of tree age and site quality on biomass allocation was examined. Our results indicate that the biomass allocation varied with tree age and was also affected by site quality. Stem biomass accounted for the largest proportion of total tree biomass, followed by leaf, root, branch and bark biomass in young forests, and it was followed by root, bark, branch and leaf biomass in other age groups. The biomass proportion of each component all nonlinearly changed with tree age. The proportion of stem biomass increased with increasing tree age, and the biomass proportion of branches and leaves decreased with increasing tree age. The proportion of root biomass first increased and then decreased with tree age, while the bark biomass proportion first decreased and then increased with increasing tree age. Site quality had a positive effect on the biomass proportion of stems but a negative effect on the biomass proportion of branches and bark. The interaction of tree age and site quality also had a significant effect on the proportion of stem biomass as well as root biomass. Therefore, to obtain accurate estimates of Chinese fir forest biomass and carbon stocks, age-specific changes and the influence of site conditions on it need to be considered.

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Section: Discussionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

Allocation Patterns and Temporal Dynamics of Chinese Fir Biomass in Hunan Province, China

Deng

et al. 2023

Forests

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“…Simulated warming significantly reduced the aboveground biomass and the total biomass of S. tabernaemontani, while the belowground biomass remained unchanged, leading to the aboveground-to-belowground biomass ratio being decreased (Figure 2). The regulatory capacity of the aboveground is stronger than that of belowground, and plants generally increase the proportion of biomass allocated to the underground portion when resources are limited (Wang et al, 2022). The aboveground portion is the vegetative tissue of plants, while that of the belowground is related to the clonal reproduction of S. tabernaemontani.…”

Section: Discussionmentioning

confidence: 99%

Response of the functional traits of Schoenoplectus tabernaemontani to simulated warming in the Napahai wetland of northwestern Yunnan, China

Liu,

Zhao,

et al. 2024

Front. Ecol. Evol.

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The impact of climate warming on wetland ecosystems is a current focal point in ecological research. In this study, the Napahai wetland, a typical plateau wetland in northwest Yunnan Province, was selected as the study site to understand the growth and survival strategies of emergent plants in a plateau wetland under climate warming conditions. Open-top chambers (OTCs) were used to simulate warming in three treatments (i.e., control group, 2.0 ± 0.5°C, and 4.0 ± 0.5°C) in order to study the responses of the functional traits of the dominant emergent plant Schoenoplectus tabernaemontani to simulated warming. The results showed that simulated warming significantly reduced the photosynthetic carbon assimilation capacity and biomass accumulation of S. tabernaemontani, as well as its nitrogen content and vascular bundle density, while it significantly increased the vascular bundle size. The growing season accumulated temperature (AT) and the mean temperature of the hottest month (WT) were the main temperature factors influencing the functional traits of S. tabernaemontani. In summary, simulated warming significantly affected the functional traits of S. tabernaemontani, which demonstrated effective adaptation to warming conditions. As the temperature rises and the light and productivity decrease, S. tabernaemontani prioritizes the supply of limited resources to the underground part to ensure the biomass supply of the reproductive structure. This study provides a case for revealing the response patterns and ecological adaptation strategies of plateau wetland plants to climate warming.

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“…Previous studies have indicated that lower TD and BA affected forest biomass in tropical forests [31,39,40]. Furthermore, in subtropical or pantropical forests, community composition and stand structure (mainly as it relates to tree height) significantly impact AGB [41,42]. In temperate forests, TD, DBH, and BA tend to determine biomass allocation and AGB [43,44].…”

Section: Introductionmentioning

confidence: 98%

Precipitation and Temperature Influence the Relationship between Stand Structural Characteristics and Aboveground Biomass of Forests—A Meta-Analysis

Eziz

Halik

et al. 2023

Forests

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Forest aboveground biomass (AGB) is not simply affected by a single factor or a few factors, but also by the interaction between them in complex ways across multiple spatial scales. Understanding the joint effect of stand structural characteristics and climate factors on AGB on large scales is critical for accurate forest carbon storage prediction and sustainable management. Despite numerous attempts to clarify the relationships between stand structural characteristics (tree density/TD, diameter at breast height/DBH, basal area/BA), climate factors (mean annual temperature/MAT, mean annual precipitation/MAP), and AGB, they remain contentious on a large scale. Therefore, we explored the relationships between stand structural characteristics, climate factors, and AGB at a biome level by meta-analyzing datasets contained in 40 articles from 25 countries, and then answered the questions of how stand structural characteristics influence AGB at the biome level and whether the relationships are regulated by climate on a large scale. Through using regression analysis and the establishment of a structural equation model, the results showed that the influence of basal area on AGB at the biome level was more substantial than that of tree density and DBH, and the significant relationship between basal area and AGB was relatively stable regardless of biome variation, but the effects of tree density and DBH was non-negligible within the biome. Climatic factors (e.g., temperature and precipitation), should be considered. Our meta-analysis illustrated the complicated interactions between climate factors, stand structural characteristics, and the AGB of forests, highlighting the importance of climate effects on regulating stand structural characteristics and AGB relationships. We suggest that basal area be preferred and considered in forest sustainable management practice to optimize stand structure for increasing carbon storage potential, with close attention to local climate conditions. Overall, our meta-analysis will crucially aid forest management and conservation in the context of global environmental changes, and provide novel insights and a scientific reference to lead to future carbon storage research on large scales.

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Impacts of Site Conditions and Stand Structure on the Biomass Allocation of Single Trees in Larch Plantations of Liupan Mountains of Northwest China

Cited by 9 publications

References 53 publications

Allocation Patterns and Temporal Dynamics of Chinese Fir Biomass in Hunan Province, China

Allocation Patterns and Temporal Dynamics of Chinese Fir Biomass in Hunan Province, China

Response of the functional traits of Schoenoplectus tabernaemontani to simulated warming in the Napahai wetland of northwestern Yunnan, China

Precipitation and Temperature Influence the Relationship between Stand Structural Characteristics and Aboveground Biomass of Forests—A Meta-Analysis

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