Intensive plantations decouple fine root C:N:P in subtropical forests

Hu, Minjie; Ma, Zilong; Chen, Han Y. H.

doi:10.1016/j.foreco.2021.119901

Cited by 12 publications

(3 citation statements)

References 61 publications

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“…However, most previous studies have examined C:N:P stoichiometry in leaves ( Lanuza et al., 2019 ; Li et al., 2021 ), and relatively little is known about root stoichiometry, especially for fine roots ( Makita et al., 2011 ; Wang et al., 2020 ; Zou et al, 2021 ), presumably because it is more difficult to collect roots than leaves. Moreover, some current studies focused on the C:N:P stoichiometry of soils ( Liu et al., 2022 ; Huang et al., 2023 ) or fine roots ( Geng et al., 2022 ; Hu et al., 2022 ) and less on the nutrient relationships between soils and fine roots ( Zhang et al., 2023 ).…”

Section: Introductionmentioning

confidence: 99%

Responses of carbon, nitrogen, and phosphorus contents and stoichiometry in soil and fine roots to natural vegetation restoration in a tropical mountainous area, Southern China

Zhang

2023

Front. Plant Sci.

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The stoichiometry of key elements such as C, N, and P is an important indicator of ecosystem nutrient status and biogeochemical cycling. Nevertheless, the responses of soil and plant C:N:P stoichiometric characteristics to natural vegetation restoration remain poorly understood. In this study, we investigated C, N, and P contents and stoichiometry in soil and fine roots along vegetation restoration stages (grassland, shrubland, secondary forest, and primary forest) in a tropical mountainous area in southern China. We found that soil organic carbon, total N, C:P ratio, and N:P ratio significantly increased with vegetation restoration and significantly decreased with increasing soil depth, whereas there was no significant effect on soil total P and C:N ratio. Furthermore, vegetation restoration significantly increased the fine root N and P content and N:P ratio, whereas soil depth significantly decreased the fine root N content and increased the C:N ratio. The increasing average N:P ratio in fine roots from 17.59 to 21.45 suggested that P limitation increased with vegetation restoration. There were many significant correlations between C, N, and P contents and their ratios in soil and fine roots, indicating a reciprocal control of nutrient stoichiometric characteristics between them. These results contribute to our understanding of changes in soil and plant nutrient status and biogeochemical cycling during vegetation restoration and provide valuable information for restoration and management of tropical ecosystems.

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Section: Introductionmentioning

confidence: 99%

Responses of carbon, nitrogen, and phosphorus contents and stoichiometry in soil and fine roots to natural vegetation restoration in a tropical mountainous area, Southern China

Zhang

2023

Front. Plant Sci.

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“…The C:N reflects the carbon assimilation ability of plants during the absorption of nutrient elements and indicates the use efficiency of nutrient elements. Generally, low C:N suggests that a plant grows fast ( Hu et al., 2022 ).…”

Section: Discussionmentioning

confidence: 99%

Coordinated variation in root and leaf functional traits of Hippophae rhamnoides treated at different stump heights in feldspathic sandstone areas of Inner Mongolia

Liu

Guo²,

Liu³

et al. 2023

Front. Plant Sci.

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This study was aimed to clarify the effects of stumping on root and leaf traits as well as the tradeoffs and synergies of decaying Hippophae rhamnoides in feldspathic sandstone areas, and to select the optimal stump height that contributed to the recovery and growth of H. rhamnoides. variations and coordination between leaf traits and fine root traits of H. rhamnoides were studied at different stump heights (0, 10, 15, 20 cm, and no stumping) in feldspathic sandstone areas. All functional traits of the leaves and roots, except the leaf C content (LC) and the fine root C content (FRC), were significantly different among different stump heights. The total variation coefficient was the largest in the specific leaf area (SLA), which is therefore the most sensitive trait. Compared to non-stumping, SLA, leaf N content (LN), specific root length (SRL) and fine root N content (FRN) all improved significantly at stump height of 15 cm, but leaf tissue density (LTD), leaf dry matter content (LDMC), leaf carbon to nitrogen ratio (LC : LN), fine root tissue density (FRTD), fine root dry matter content (FRDMC) and fine root carbon to nitrogen ratio (FRC : FRN) all decreased significantly. The leaf traits of H. rhamnoides at different stump heights follow the leaf economic spectrum, and the fine roots show a similar trait syndrome to the leaves. SLA and LN are positively correlated with SRL and FRN and negatively with FRTD and FRC : FRN. LDMC and LC : LN are positively correlated with FRTD and FRC : FRN, and negatively correlated SRL and RN. The stumped H. rhamnoides changes to the ‘rapid investment–return type’ resource trade-offs strategy, and the growth rate is maximized at the stump height of 15 cm. Our findings are critical to the prevention and control of vegetation recovery and soil erosion in feldspathic sandstone areas.

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“…Forest ecosystems rely heavily on fine roots for N cycling. Dead roots have more N compared to other tree parts (Hu et al, 2022). Fine roots play a crucial role in the N dynamics of forests, including Moso bamboo forests by uptake absorbing more N from the soil, which is then used for plant growth and metabolism (Drake et al, 2011;Bai et al, 2016).…”

Section: Root Structure and Activitymentioning

confidence: 99%

Soil nitrogen dynamics in natural forest ecosystem: a review

Sardar

Younas

Farooqi

et al. 2023

Front. For. Glob. Change

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Nitrogen (N) is an important component of the forest soils and plays a pivotal role in the ecosystem’s health, also in broadleaf and Moso bamboo (Phyllostachys edulis) forests. Nitrogen plays numerous functions in the production and transformation of soil organic matter (SOM) and alterations in the soil’s physicochemical and biological properties. Despite the extensive research on soil properties and microorganism diversity in broadleaf and Moso bamboo forests, we still know very little about N dynamics and its significance in broadleaf and Moso bamboo forests, or how various physical and environmental variables influence soil physicochemical, N dynamics, and biological attributes. This article provides a thorough overview of the role of N dynamics in broadleaf and Moso bamboo forests and changes in soil physicochemical properties processes by summarizing recent advances in our knowledge of forest soil microbial diversity, and carbon (C) and N sink in broadleaf and Moso bamboo forests. As broadleaf and Moso bamboo forests are very sensitive to little change, even a small change in these ecosystems can alter the overall N dynamics. Here, we dissect the soil ecology of broadleaf and Moso bamboo forests to provide insights into the possibilities and consequences of future studies of N dynamics in these ecosystems.

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Intensive plantations decouple fine root C:N:P in subtropical forests

Cited by 12 publications

References 61 publications

Responses of carbon, nitrogen, and phosphorus contents and stoichiometry in soil and fine roots to natural vegetation restoration in a tropical mountainous area, Southern China

Responses of carbon, nitrogen, and phosphorus contents and stoichiometry in soil and fine roots to natural vegetation restoration in a tropical mountainous area, Southern China

Coordinated variation in root and leaf functional traits of Hippophae rhamnoides treated at different stump heights in feldspathic sandstone areas of Inner Mongolia

Soil nitrogen dynamics in natural forest ecosystem: a review

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