Effect of nitrogen levels on photosynthetic parameters, morphological and chemical characters of saplings and trees in a temperate forest

Sun, Jiazhu; Yao, Fuqi; Wu, Jiabing; Ping-cang, Zhang; Wang, Xu

doi:10.1007/s11676-017-0547-8

Cited by 25 publications

(13 citation statements)

References 50 publications

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“…Our result showed that the PNmax increased with the increase of nitrogen fertilizer application rate and was positively correlated with nitrogen content of leaf (Fig. 1, Table 3), which was consistent with results of Wang et al (2014) and Sun et al (2018). It may be due to the high Chl content and nitrogen content of the leafs.…”

Section: Discussionsupporting

confidence: 91%

Light-response characteristics of photosynthesis of drip-irrigated sugar beet under different nitrogen fertilizer managements

Fei¹,

Su²,

Li³

et al. 2019

Photosynt.

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Effects of two split application ratios of nitrogen fertilizer (R1: half of the total nitrogen fertilizer was applied on 13 June, and the rest was applied on 1 July; R2: two equal amounts of N fertilizer accounting for 70% of total were applied on 15 June and 1 July, respectively, and the rest was applied on 1 August) and three N fertilizer application rates (75, 150, and 225 kg ha-1) on chlorophyll content, photosynthetic characteristics, and root yield of sugar beets were studied. The results showed that with N fertilizer application rates of 150 and 225 kg ha-1 , R2 treatment significantly decreased light-compensation point, but increased light-saturation point and actual photochemical efficiency at the storage root development compared to R1 treatment. The R2 treatment with the N fertilizer application rate of 150 kg ha-1 significantly increased sugar yield by 5-29% compared to other treatments.

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Section: Discussionsupporting

confidence: 91%

Light-response characteristics of photosynthesis of drip-irrigated sugar beet under different nitrogen fertilizer managements

Fei¹,

Su²,

Li³

et al. 2019

Photosynt.

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“…N addition to the soil can highly affect plants and, thus, may alter ecological processes such as N cycling and soil enzyme activities (Wang, Lv, Liu, & Wang, ), suggesting that N deposition may alter the effects of O 3 on plants. In particular, low N addition can positively affect plant physiological performance and growth (Díaz‐Álvarez, Lindig‐Cisneros, & de la Barrera, ; Möhl et al, ; Sun et al, ), which is opposite to those of high N addition (Díaz‐Álvarez et al, ; Sun et al, ). This biphasic dose–response pattern (Agathokleous, ; Agathokleous, Belz, Kitao, Koike, & Calabrese, ) may be the reason that previous examinations of whether N addition alters the effects of O 3 on plants could not lead to a consistent conclusion (Agathokleous et al, ).…”

Section: Discussionmentioning

confidence: 99%

“…Given that N deposition effects depend on the dose/amount (Agathokleous, ), we also examined whether elevated O 3 effects can be altered depending on the level of N addition. Since low levels of N addition can induce a fertilization effect on major physiological functions, such as photosynthesis and chlorophylls (Sun, Yao, Wu, Zhang, & Xu, ), and biomass (Chen et al, ), we hypothesized that they may offset negative effects of oxidative stress, that is elevated O 3 . Conversely, since high N addition can negatively affect plants (Sun et al, ), we hypothesized that it may aggravate the negative effects of elevated O 3 .…”

Section: Introductionmentioning

confidence: 99%

“…Since low levels of N addition can induce a fertilization effect on major physiological functions, such as photosynthesis and chlorophylls (Sun, Yao, Wu, Zhang, & Xu, ), and biomass (Chen et al, ), we hypothesized that they may offset negative effects of oxidative stress, that is elevated O 3 . Conversely, since high N addition can negatively affect plants (Sun et al, ), we hypothesized that it may aggravate the negative effects of elevated O 3 . Potential dependence of O 3 effects on N addition is also important for predicting N deposition and O 3 effects because of the spatial variation of N deposition, such as between urban‐affected vegetation and non‐urban‐affected vegetation (Bettez & Groffman, ; Díaz‐Álvarez & de la Barrera, ; Fenn et al, ).…”

Section: Introductionmentioning

confidence: 99%

“…Conversely, since high N addition can negatively affect plants (Sun et al, 2018), we hypothesized that it may aggravate the negative effects of elevated O 3 . Potential dependence of O 3 effects on N addition is also important for predicting N deposition and O 3 effects because of the spatial variation of N deposition, such as between urban-affected vegetation and non-urban-affected vegetation (Bettez & Groffman, 2013;Díaz-Álvarez & de la Barrera, 2018;Fenn et al, 2018).…”

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confidence: 99%

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Ozone will remain a threat for plants independently of nitrogen load

Feng

Shang

et al. 2019

Functional Ecology

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Elevated concentrations of ground‐level ozone (O3) and atmospheric nitrogen (N) deposition occur concurrently. The negative effects of elevated O3 on plants have been widely studied and are well understood nowadays. However, how the effects of elevated O3 on plants may be driven by N deposition remains an unsolved puzzle. We conducted a meta‐analysis and showed that the negative effects of elevated O3 on photosynthesis, stomatal conductance, growth and biomass production of semi‐natural and natural vegetation may remain unchanged by N deposition in the coming future under realistic increases in O3 concentrations (+20 to 40 ppb) and N deposition (up to 60 kg ha−1 year−1). The negative effect of elevated O3 on chlorophyll content is offset by soil N addition; however, the negative effect on biomasses is not offset by soil N addition. Across functional groups and O3 levels, N addition exacerbated O3 effects on root when N increased from 0–10 kg N ha−1 year−1 to 11–30 kg N ha−1 year−1. However, an analysis as per the plant functional group revealed that such a N‐dependent O3 effect was significant only in perennial non‐woody plants, and was non‐significant when only realistic increases in O3 concentrations were considered. Likewise, N addition appeared to exacerbate O3‐negative effects on photosynthesis of trees when N increased from 0–30 kg N ha−1 year−1 to >60 kg N ha−1 year−1; however, this effect was significant only when realistic increases in O3 concentrations were considered. The results suggest potential error in the current estimates of the overall O3 impacts on plants due to no consideration of soil N availability, and encourage further studies on the interaction of O3 and N availability that will permit more robust analyses in the future. Elevated O3 will likely remain a persistent agricultural and ecological issue independently of N deposition. A free Plain Language Summary can be found within the Supporting Information of this article.

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Synergistic effects of nitrogen and plant growth-promoting rhizobacteria inoculation on the growth, physiological traits and nutrient absorption of intercropped Eucalyptus urophylla × Eucalyptus grandis and Dalbergia odorifera

Lan

Liao

Yao

et al. 2022

Trees

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Key message Legume/nonlegume intercropping systems equipped with moderate nitrogen (N) application and PGPR inoculation could be exploited in eucalyptus growing areas and degraded land as an ecologically sustainable system to avoid excessive fertilization and enhance nitrogen use efficiency. Abstract Hazardous nitrogenous fertilizers in eucalyptus monocultures are challenging for the balance between eucalyptus wood production and ecological service functions. To assess whether plant growth-promoting rhizobacteria (PGPR) inoculation coupled with N application may improve plant growth by increasing biomass, photosynthesis, soil nutrient supply, and nutrient uptake capacity in the intercropping system. A pot experiment was performed to evaluate the synergistic effects of N application and N-fixing PGPR on growth, physiological parameters, N accumulation and nitrogen use efficiency (NUE) in intercropped Eucalyptus urophylla × Eucalyptus grandis (E. urophylla × E. grandis) and Dalbergia odorifera (D. odorifera). N fertilization positively influenced the plant height, dry matter yield, photosynthetic characteristics, N accumulation and nitrate reductase activity of E. urophylla × E. grandis under both inoculations. The growth and physiological traits of D. odorifera improved under the N2 (6 g N pot−1) application level. E. urophylla × E. grandis inoculated with Rhizobium japonicum IOC 113-2 showed higher values for plant height, biomass accumulation, N accumulation and photosynthesis with N fertilization, but the growth and physiological parameters of D. odorifera responded differentially to different inoculation treatments. The results demonstrated that an appropriate N supply in combination with N-fixing PGPR inoculation of legumes could increase nutrient absorption, NUE and yield advantages in intercropped E. urophylla × E. grandis and D. odorifera; thus, this method could be recommended as an alternative planting system under N-limited conditions in agroecosystems.

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Effect of nitrogen levels on photosynthetic parameters, morphological and chemical characters of saplings and trees in a temperate forest

Cited by 25 publications

References 50 publications

Light-response characteristics of photosynthesis of drip-irrigated sugar beet under different nitrogen fertilizer managements

Light-response characteristics of photosynthesis of drip-irrigated sugar beet under different nitrogen fertilizer managements

Ozone will remain a threat for plants independently of nitrogen load

Synergistic effects of nitrogen and plant growth-promoting rhizobacteria inoculation on the growth, physiological traits and nutrient absorption of intercropped Eucalyptus urophylla × Eucalyptus grandis and Dalbergia odorifera

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