Effects of soil warming on the ecophysiological properties of the fine roots of Chinese fir (<i>Cunninghamia lanceolata</i>) seedlings

Jianxin, 冯建新 Feng; Decheng, 熊德成 Xiong; Shunzeng, 史顺增 Shi; Chensen, 许辰森 Xu; Boyuan, 钟波元 Zhong; Fei, 邓飞 Deng; Yunyu, 陈云玉 Chen; Gunagshui, 陈光水 Chen; Yusheng, 杨玉盛 Yang

doi:10.5846/stxb201603260543

Cited by 2 publications

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“…SRL, SRA, and D) were unresponsive to soil warming. Contrary to our findings, others have shown that fine root morphology is responsive to higher soil temperatures (Feng et al, 2017;Parts et al, 2019). For example, Björk et al (2007) observed that fine root SRA and SRL increased under warmer environments to optimize soil resource acquisition and maintain growth.…”

Section: Discussioncontrasting

confidence: 99%

The impact of soil warming on fine root trait responses of trees, deciduous vs. coniferous: a meta-analysis

2022

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We compiled data from 149 paired observations from 43 publications and performed a meta-analysis to evaluate the variability of trees’ fine root trait responses under various global soil warming experiments. The impacts of warming magnitude, soil depth, and different tree species (deciduous vs. coniferous), on the responses of fine root biomass (FRB), and fine root morphology were assessed in this study. Our results confirmed that soil warming increased FRB while having no significant effect on fine root morphological traits, such as specific root length (SRL), specific root area (SRA), and diameter (D). The effect of warming on FRB decreased significantly at higher warming magnitude. The effect of tree species was also evident in the response of FRB to soil warming magnitude. Furthermore, warming effects on SRA and D increased in deeper soil horizons. The present meta-analysis provides an improved understanding of trees’ fine roots and the tree species-specific adaptive strategy under future soil warming episodes. Our results suggest that trees will resist the altering soil warming conditions by modifications more in fine root biomass allocation rather than morphological adjustments.

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Section: Discussioncontrasting

confidence: 99%

The impact of soil warming on fine root trait responses of trees, deciduous vs. coniferous: a meta-analysis

2022

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“…Air and soil warming directly influence plant growth and development by affecting enzymatic reactions, photosynthesis, respiration, water loss, and other metabolic functions (Mau et al., 2018; Tunison et al., 2024). Additionally, warming indirectly impacts plants by reducing soil water content and increasing soil N availability (Bai et al., 2013; Feng et al., 2017; Jiang et al., 2022; Xiong et al., 2018; Xu et al., 2013), which can also affect root traits. Overall, we expect that warming will increase plant biomass production, including roots, due to increased nutrient availability and photosynthesis (Figure 4; Wu et al., 2019).…”

Section: Resultsmentioning

confidence: 99%

Tropical root responses to global changes: A synthesis

Yaffar,

Lugli,

Wong

et al. 2024

Global Change Biology

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Tropical ecosystems face escalating global change. These shifts can disrupt tropical forests' carbon (C) balance and impact root dynamics. Since roots perform essential functions such as resource acquisition and tissue protection, root responses can inform about the strategies and vulnerabilities of ecosystems facing present and future global changes. However, root trait dynamics are poorly understood, especially in tropical ecosystems. We analyzed existing research on tropical root responses to key global change drivers: warming, drought, flooding, cyclones, nitrogen (N) deposition, elevated (e) CO2, and fires. Based on tree species‐ and community‐level literature, we obtained 266 root trait observations from 93 studies across 24 tropical countries. We found differences in the proportion of root responsiveness to global change among different global change drivers but not among root categories. In particular, we observed that tropical root systems responded to warming and eCO2 by increasing root biomass in species‐scale studies. Drought increased the root: shoot ratio with no change in root biomass, indicating a decline in aboveground biomass. Despite N deposition being the most studied global change driver, it had some of the most variable effects on root characteristics, with few predictable responses. Episodic disturbances such as cyclones, fires, and flooding consistently resulted in a change in root trait expressions, with cyclones and fires increasing root production, potentially due to shifts in plant community and nutrient inputs, while flooding changed plant regulatory metabolisms due to low oxygen conditions. The data available to date clearly show that tropical forest root characteristics and dynamics are responding to global change, although in ways that are not always predictable. This synthesis indicates the need for replicated studies across root characteristics at species and community scales under different global change factors.

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Effects of soil warming on the ecophysiological properties of the fine roots of Chinese fir (Cunninghamia lanceolata) seedlings

Cited by 2 publications

References 0 publications

The impact of soil warming on fine root trait responses of trees, deciduous vs. coniferous: a meta-analysis

The impact of soil warming on fine root trait responses of trees, deciduous vs. coniferous: a meta-analysis

Tropical root responses to global changes: A synthesis

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