Effects of different degrees of anthropogenic disturbance on biomass and spatial distribution in Subtropical forests in Central Southern China

Shangyi, 李尚益 Li; Xi, 方晰 Fang; Jinlei, 陈金磊 Chen; Leida, 李雷达 Li; Xiang, 辜翔 Gu; Zhaodan, 刘兆丹 Liu; Shiji, 张仕吉 Zhang

doi:10.5846/stxb201709101629

Cited by 3 publications

(5 citation statements)

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“…This is because only plant individuals with D ≥ 5 cm were sampled, and understory plants are more strongly influenced by disturbance (Meyer et al, 2021;Huang et al, 2022). The biomass of subtropical forests disturbed by anthropogenic fire, forest logging, and livestock grazing is lower than that of primary zonal evergreen broad-leaved forest in southern China (Li et al, 2018;Luo et al, 2023). This study also found that the disturbed evergreen broad-leaved forests had significantly lower biomass relative to primary conserved forests.…”

Section: Discussionmentioning

confidence: 99%

“…Few parcels of primary conserved forests remain and are mostly scattered across a few nature reserves and in remote mountain locations ( Fan et al., 2019 ). Plant species composition and diversity, biomass, and functional trait characteristics differ significantly between anthropogenically disturbed forests and primary conserved forests in this region ( Zhu et al., 1997 ; Li et al., 2018 ; Huang et al., 2022 ; Yin, 2022 ; Luo et al., 2023 ; Yu et al., 2023 ). Nevertheless, the influence on biodiversity of specific strategies adopted by plants in response to environmental changes in perturbed and conserved forests have not been reported.…”

Section: Introductionmentioning

confidence: 99%

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Plant life history strategies vary in subtropical forests with different disturbance histories: an assessment of biodiversity, biomass, and functional traits

Liu,

Xia,

Zheng

et al. 2024

Front. Plant Sci.

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Disturbance alters environmental conditions in forests. Plants growing in forests with different disturbance histories in diverse environments may adopt varying life history strategies, but few studies focus on this effect. This study comprehensively investigated plant biodiversity, biomass, and functional traits in subtropical forests with two different disturbance histories in east China to explore differences in life history strategies. Biodiversity was slightly higher in disturbed compared to conserved forests. Significantly higher biomass was measured in conserved relative to disturbed evergreen broadleaved forests (P < 0.05). In conserved forests, leaf tissue density (LTD) was significantly higher and leaf thickness (LT), leaf dry matter content (LDMC), twig tissue density (TTD), twig dry matter content (TDMC), bark tissue density (BTD) and dry matter content (BDMC), and stem tissue density (STD) and dry matter content (SDMC) were significantly lower than in disturbed forests (P < 0.05). In terms of associated plant biodiversity, biomass, and functional traits, conserved forests adopted a resource acquisition strategy, reducing biodiversity and developing multiple functional traits such as high leaf area and specific leaf area and low LT, LDMC, TTD, TDMC, BTD, BDMC, STD, and SDMC to support a high biomass accumulation rate. Disturbed forests adopted a resource conservation strategy, enhancing biodiversity and developing converse trait combinations to lower the rate of biomass accumulation. A comprehensive investigation of plant biodiversity, biomass, and functional traits and subsequent assessment of plant life history strategies in conserved and disturbed forests will aid investigations of regional biodiversity and carbon reserves, contribute data to the TRY and Chinese plant trait databases, and improve ecological management and restoration efforts in east China.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Plant life history strategies vary in subtropical forests with different disturbance histories: an assessment of biodiversity, biomass, and functional traits

Liu,

Xia,

Zheng

et al. 2024

Front. Plant Sci.

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“…In finer detail, forest structuring often thrives when it involves mixed, randomly distributed trees featuring reasonable degrees of dominance and crowding-a concept that has garnered recognition in recent studies [51,52]. The multivariate distribution of forest structure serves as an effective guide for forest selection [53]. In cases where all six indicators exhibit poor values, prioritizing the felling of the stand is the initial course of action, followed by the removal of trees with five poor indicators, and so forth.…”

Section: The Role Of the N-variable Distribution Methods In Forest St...mentioning

confidence: 99%

The Multivariate Distribution of Stand Spatial Structure and Tree Size Indices Using Neighborhood-Based Variables in Coniferous and Broad Mixed Forest

Wang,

Li,

Cao

et al. 2023

Forests

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The spatial structure of forest stands significantly influences inter-tree competition and the overall stability of the stand’s ecological dynamics, and a profound understanding of forest stand spatial structure is essential for both effective forest management and ecological research. Previous studies on spatial structure have primarily employed single variables, offering only one-dimensional structural insights and lacking the capacity to interpret multidimensional information. In light of these limitations, our study introduces a novel approach founded on a six-variable distribution, aimed at conducting a comprehensive analysis and interpretation of the spatial attributes of forest stands. Diverging from conventional univariate or bivariate methods, the hexi-variate approach simultaneously considers six variables, facilitating a more intricate exploration of the intricate interrelationships within forest ecosystems from six distinct dimensions. We conducted an in-depth analysis of the spatial structural attributes within the forest stand, encompassing factors such as species diversity, size variation, spatial distribution patterns, openness, vertical stratification, and stand competition. To capture a comprehensive view of the trees’ spatial information, we employed the hexadecimal distribution method, effectively quantifying their characteristics across six dimensions. Our study unveiled a significant correlation between spatial structure and stand growth, establishing a connection by integrating the spatial structure with key structural features relevant to tree size. The outcomes of this study shed light on the effectiveness and superiority of the six-element distribution method when it comes to the analysis of forest structural characteristics. Our approach offers valuable insights into the optimization of forest management strategies, encompassing selective harvesting and biodiversity conservation, thereby establishing a solid footing for sustainable forest management practices.

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Section: Study Areamentioning

confidence: 99%

“…This region enjoys superior hydrothermal conditions, fostering a rich diversity of forest types and species diversity [6]. Overall, evergreen broadleaf forests predominantly occupy the subtropical regions of China [31]. The photosynthetically active radiation (PAR) data used in this study came from the Global Land Surface Feature Parameters (GLASS) data product, developed independently by the team of Professor Liang at Beijing Normal University.…”

Section: Study Areamentioning

confidence: 99%

Assessing the Distribution and Driving Effects of Net Primary Productivity along an Elevation Gradient in Subtropical Regions of China

Xu,

Feng,

Chen

et al. 2024

Forests

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Globally, forest ecosystems, especially subtropical forests, play a central role in biogeochemical cycles and climate regulation, demonstrating their irreplaceable function. The subtropical region of China, characterized by its unique forest ecosystem, complex terrain, climate heterogeneity, diverse vegetation types, and frequent human activities, underscores the importance of the in-depth study of its net primary productivity (NPP). This paper employs the eddy covariance–light use efficiency (EC-LUE) model to quantitatively estimate the gross primary productivity (GPP) of this region from 2001 to 2018, followed by an estimation of the actual net primary productivity (ANPP) using the carbon use efficiency (CUE). The results showed that over these 18 years, the annual average ANPP was 677.17 gC m−2 a−1, exhibiting an overall increasing trend, particularly in mountainous areas, reserves, and the cultivated lands of the northeastern plains, whereas a significant decrease was observed around the urban agglomerations on the southeast coast. Furthermore, the Thornthwaite memorial model was applied to calculate the potential net primary productivity (PNPP), and diverse scenarios were set to quantitatively evaluate the impact of climate change and human activities on the vegetation productivity in the study area. It was found that in areas where the ANPP increased, both human activities and climate change jointly influenced ANPP dynamics; in areas with a decreased ANPP, the impact of human activities was particularly significant. Additionally, the heterogeneous distribution of ANPP across different altitudinal gradients and the driving effects of various climatic factors were analyzed. Finally, a partial correlation analysis was used to examine the relationships between the temperature, precipitation, and ANPP. This study indicated that temperature and precipitation have a substantial impact on the growth and distribution of vegetation in the region, yet the extent of this influence shows considerable variation among different areas. This provides a robust scientific basis for further research and understanding of the carbon dynamics of subtropical forest ecosystems and their role in the global carbon cycle.

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Effects of different degrees of anthropogenic disturbance on biomass and spatial distribution in Subtropical forests in Central Southern China

Cited by 3 publications

References 0 publications

Plant life history strategies vary in subtropical forests with different disturbance histories: an assessment of biodiversity, biomass, and functional traits

Plant life history strategies vary in subtropical forests with different disturbance histories: an assessment of biodiversity, biomass, and functional traits

The Multivariate Distribution of Stand Spatial Structure and Tree Size Indices Using Neighborhood-Based Variables in Coniferous and Broad Mixed Forest

Assessing the Distribution and Driving Effects of Net Primary Productivity along an Elevation Gradient in Subtropical Regions of China

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