The coordinated impact of forest internal structural complexity and tree species diversity on forest productivity across forest biomes

Ma, Qin; Su, Yanjun; Hu, Tianyu; Jiang, Lin; Mi, Xiangcheng; Lin, Luxiang; Cao, Min; Wang, Xugao; Lin, Fei; Wang, Bojian; Sun, Zhenhua; Wu, Jin; Ma, Keping

doi:10.1016/j.fmre.2022.10.005

Cited by 5 publications

(4 citation statements)

References 50 publications

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“…Considering that the influence of neighborhood canopy structure on tree mortality is primarily mediated through resource competition and partitioning of space 15,25,26 , we selected three widely recognized competition indices to address the second question. These indices included canopy cover taller than central tree height (CCTH), canopy cover taller than 66% of central tree height (CC66), and coefficient of variation in tree height (CVTH) (Supplementary Fig.…”

Section: Impact Of Neighborhood Canopy Structure On Tree Mortalitymentioning

confidence: 99%

“…The heterogeneity and diversity of tree sizes and age groups at the forest-stand level are vital for the sustainability of forest ecosystems, particularly in areas with frequent disturbance and drought stress. Tree species diversity often shows a positive relationship with canopy structural complexity 26,34 , and the higher hydraulic diversity brought by high tree species diversity improves forest resilience to drought 46 . Our findings suggest that adopting a forest restoration strategy reestablishing heterogeneity in tree species diversity and canopy structural complexity can enhance forest resilience to extreme droughts 47 .…”

Section: Implications For Forest Management Under a Changing Climatementioning

confidence: 99%

“…Individual tree size was represented by tree height, calculated as the maximum height above the ground within a tree segment. Since the influence of neighborhood canopy structure on tree mortality is primarily mediated through resource competition and area partitioning 15,25,26 , it was represented by three widely recognized competition indices, including CCTH, CC66, and CVTH. These three indices can characterize the three-dimensional arrangement of canopy elements within the neighborhood of a targeted tree (a circular buffer with a 15-m radius in this study) 42 .…”

Section: Canopy Structural Attribute Extractionmentioning

confidence: 99%

“…As for the second aspect, neighborhood canopy structure can influence tree mortality during drought by regulating stand-level ecohydrological processes through resource competition and partitioning 15,[25][26][27] . Trees in dense forests, particularly in monoculture settings, may experience intense symmetric competition for water during drought 5,6,12 , leading to higher vulnerability to drought.…”

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confidence: 99%

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Tree mortality during long-term droughts is lower in structurally complex forest stands

Ma,

Su,

Niu

et al. 2023

Nat Commun

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Increasing drought frequency and severity in a warming climate threaten forest ecosystems with widespread tree deaths. Canopy structure is important in regulating tree mortality during drought, but how it functions remains controversial. Here, we show that the interplay between tree size and forest structure explains drought-induced tree mortality during the 2012-2016 California drought. Through an analysis of over one million trees, we find that tree mortality rate follows a “negative-positive-negative” piecewise relationship with tree height, and maintains a consistent negative relationship with neighborhood canopy structure (a measure of tree competition). Trees overshadowed by tall neighboring trees experienced lower mortality, likely due to reduced exposure to solar radiation load and lower water demand from evapotranspiration. Our findings demonstrate the significance of neighborhood canopy structure in influencing tree mortality and suggest that re-establishing heterogeneity in canopy structure could improve drought resiliency. Our study also indicates the potential of advances in remote-sensing technologies for silvicultural design, supporting the transition to multi-benefit forest management.

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Section: Impact Of Neighborhood Canopy Structure On Tree Mortalitymentioning

confidence: 99%

Section: Implications For Forest Management Under a Changing Climatementioning

confidence: 99%

Section: Canopy Structural Attribute Extractionmentioning

confidence: 99%

mentioning

confidence: 99%

See 2 more Smart Citations

Tree mortality during long-term droughts is lower in structurally complex forest stands

Ma,

Su,

Niu

et al. 2023

Nat Commun

Self Cite

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Mapping tree species diversity in a typical natural secondary forest by combining multispectral and LiDAR data

Ming,

Liu,

Quan

et al. 2024

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Seasonal variations in the mechanisms of understory herb diversity in a temperate forest in Northeast China

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Mao,

Jiang

et al. 2024

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The coordinated impact of forest internal structural complexity and tree species diversity on forest productivity across forest biomes

Cited by 5 publications

References 50 publications

Tree mortality during long-term droughts is lower in structurally complex forest stands

Tree mortality during long-term droughts is lower in structurally complex forest stands

Mapping tree species diversity in a typical natural secondary forest by combining multispectral and LiDAR data

Seasonal variations in the mechanisms of understory herb diversity in a temperate forest in Northeast China

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