Stoichiometric homeostasis, physiology, and growth responses of three tree species to nitrogen and phosphorus addition

Wang, Jingyuan; Wang, Jiannan; Guo, Weihong; Li, Yingang; Wang, G. Geoff; Wu, Tonggui

doi:10.1007/s00468-018-1719-7

Cited by 30 publications

(22 citation statements)

References 43 publications

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“…These results are consistent with the assumption of community‐level organ homeostasis; that is, canopy leaves tend to be under more strict stoichiometric regulation compared with canopy branches and roots (Table ). Although in this study, we did not quantify organ homeostasis at the species level due to data constraints, the findings of numerous greenhouse and field studies support the assumption that leaves are characterized by greater stoichiometric homeostasis than stems and roots (Garrish, Cernusak, Winter, & Turner, ; Minden & Kleyer, ; Schreeg, Santiago, Wright, & Turner, ; Wang et al, ). The most active organs have the greatest ability to perform important functions at specific points during plant growth, such as increasing the uptake of a given limiting resource or increasing potential reproductive success.…”

Section: Discussionmentioning

confidence: 68%

“…Organ activity is a predominant factor with regard to the regulation of nutrient allocation. Organs characterized by higher metabolic activity tend to be more homeostatic, and accordingly, the most limiting resource should be prioritized to optimize whole‐plant growth or reproduction (Aerts & Chapin III, ; Rastetter & Shaver, ; Wang et al, ; Yan, Guan, et al, ). Herein, we employed the homeostasis coefficient H to measure organ homeostasis at the community level and used an allometric exponent ( α > 1 or α < 1) to measure the relative changes in organ nutrients at the species and community levels.…”

Section: Discussionmentioning

confidence: 99%

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Conservative allocation strategy of multiple nutrients among major plant organs: From species to community

Zhao

Wang

et al. 2019

Journal of Ecology

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1. Nutrient allocation is an important aspect of plant resource uptake and use, which is related to life-history strategies. Although to date considerable attention has focused on plant allocation of nitrogen and phosphorus, comparatively little information is available on the allocation of various other nutrients and their up-scaling from the species to community level.2. We measured 10 nutrient elements in the leaves, branches and fine roots of 551 plant species growing in eight forest ecosystems in China, ranging from cold temperate to subtropical forests. We estimated the scaling relationship of multiple nutrients among plant organs at the species level and scaled-up the relationship to the community level by combining this information with that of community structure.3. Nutrient allocation among plant organs was conserved in different functional groups and biomes across broad environmental gradients. Nutrient partitioning between organs with similar function tended to be isometric, whereas partitioning between organs with distinct functions tended to be allometric. The scaling relationship between above-and below-ground organs remained consistent, whereas the scaling relationship within above-ground organs changed after scaling up from the species to the community level, with the relative change in nutrients being consistently smaller in the more active organs.4. Synthesis. The pattern of multiple nutrient allocation among organs showed a degree of conservatism across plant functional groups and biomes, with disproportional changes in nutrient content between functionally distinct organs and a lower relative change in more active organs. This conservative strategy implies the existence of general rules that constrain plant nutrient allocation.

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Section: Discussionmentioning

confidence: 68%

Section: Discussionmentioning

confidence: 99%

Conservative allocation strategy of multiple nutrients among major plant organs: From species to community

Zhao

Wang

et al. 2019

Journal of Ecology

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“…N and P addition gradients setting: set the N addition treatments as CK, 0.8, 2.4, 4.0, and 6.0 mol⋅m –2 , respectively, and the fertilization was added in the form of urea [CO(NH 2 ) 2 ]; P fertilization treatment was set as CK, 0.05, 0.2, 0.6, and 1.0 mol⋅m –2 , respectively, and fertilization was added in the form of superphosphate [Ca(H 2 PO 4 ) 2 ]. The fertilization gradients were based on a pretest and a previous seedling pot study ( Wang et al, 2018 ). Fertilization dosage and time: the first addition time is from the end of March to the beginning of April, 60% of the total amount of fertilization added; the second addition time is in the middle of June, 40% of the total amount of fertilization added.…”

Section: Methodsmentioning

confidence: 99%

Effects of Long-Term Fertilization and Stand Age on Root Nutrient Acquisition and Leaf Nutrient Resorption of Metasequoia glyptostroboides

et al. 2022

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The plant nutrient acquisition strategies are diverse, such as root nutrient acquisition and leaf nutrient resorption, playing important roles in driving soil processes, vegetation performance as well as ecosystem nutrient cycling. However, it is still in a debate whether there is a synergy or tradeoff between above- and below-ground nutrient acquisition strategy under nitrogen (N) and phosphorus (P) addition, or with stand age. Herein, this study investigated the responses of root-soil accumulation factor (RSAF) and leaf nutrient resorption efficiency (NuRE) to long-term N and P fertilization, and further explored the trade-off between them in Metasequoia glyptostroboides plantations with different stand age. Results showed that under N fertilization in young plantations, leaf N resorption efficiency (NRE) increased, and root-soil accumulation factor for P (RSAF-P) decreased. For young forests under P fertilization, the NRE increased whereas RSAF-P decreased. For middle-aged forests under P fertilization, the NRE and leaf P resorption efficiency (PRE) increased and the RSAF-P decreased. Under P fertilization in young and middle-aged plantations, PRE had a significant positive correlation with RSAF-P. Under N fertilization in young plantations, NRE was significantly positive correlated with root-soil accumulation factor for N (RSAF-N). The covariance-based structural equation modeling (CB-SEM) analysis indicated that stand age had positive effects on PRE whether under N or P fertilization, as well as on RSAF-P under N fertilization, whereas had no effects on the NRE or RSAF-N. Overall, our results can shed light on the nutrient acquisition strategies of M. glyptostroboides plantations under future environmental changes and the results could be applied to the nutrient management practices.

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“…Needle N:P ratios varied with soil N:P ratios across all ages, and the slope was lower than 1 (Figure 3C), implying that needles did not regulate nutrient composition to save energy and store nutrients (Meunier et al, 2014). Moreover, nutrients in leaves translocate to branches and roots when excessive amounts of soil nutrients are available, whereas under nutrient deficiency leaf nutrients remain constant via translocation from other organs and tissues (Wang et al, 2018;Zhang et al, 2018). N:P ratios in leaves and soil constitute an important basis for determining changes in the nutrient limitation status of forest ecosystems with increasing stand age (Liu et al, 2016;Yan et al, 2018).…”

Section: Changes In Nutrient Resorption Efficiency and Nutrient Limitationmentioning

confidence: 99%

Linkages Between Nutrient Resorption and Ecological Stoichiometry and Homeostasis Along a Chronosequence of Mongolian Pine Plantations

Wang

Song

et al. 2021

Front. Plant Sci.

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Nutrient resorption is an important strategy for nutrient conservation, particularly under conditions of nutrient limitation. However, changes in nutrient resorption efficiency with stand development and the associated correlations with ecological stoichiometry and homeostasis are poorly understood. In the study, the authors measured carbon (C), nitrogen (N), and phosphorus (P) concentrations in soil and in green and senesced needles along a chronosequence of Mongolian pine (Pinus sylvestris var. mongolica) plantations (12-, 22-, 31-, 42-, 52-, and 59-year-old) in Horqin Sandy Land of China, calculated N and P resorption efficiency (NRE and PRE, respectively), and homeostasis coefficient. The authors found that soil organic C and total N concentrations increased, but soil total P and available P concentrations decreased with stand age. Green needle N concentrations and N:P ratios as well as senesced needle C:N ratios, NRE, and PRE exhibited patterns of initial increase and subsequent decline with stand age, whereas green needle C:N ratios and senesced needle N concentrations, and N:P ratios exhibited the opposite pattern. NRE was positively correlated with N concentration and N:P ratio, but negatively correlated with C:N ratio in green needles, whereas the opposite pattern was observed in senesced needles. PRE was negatively correlated with senesced needle P concentration, soil-available N concentration, and available N:P ratio. The homeostatic coefficient of N:P was greater when including all stand ages than when including only those younger than 42 years. These findings indicate that tree growth may change from tending to be N limited to tending to be P limited along the Mongolian pine plantation chronosequence. Nutrient resorption was coupled strongly to tree growth and development, whereas it played a lesser role in maintaining stoichiometric homeostasis across the plantation chronosequence. Therefore, adaptive fertilization management strategies should be applied for the sustainable development of Mongolian pine plantations.

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Stoichiometric homeostasis, physiology, and growth responses of three tree species to nitrogen and phosphorus addition

Cited by 30 publications

References 43 publications

Conservative allocation strategy of multiple nutrients among major plant organs: From species to community

Conservative allocation strategy of multiple nutrients among major plant organs: From species to community

Effects of Long-Term Fertilization and Stand Age on Root Nutrient Acquisition and Leaf Nutrient Resorption of Metasequoia glyptostroboides

Linkages Between Nutrient Resorption and Ecological Stoichiometry and Homeostasis Along a Chronosequence of Mongolian Pine Plantations

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