Weak growth response to nitrogen deposition in an old‐growth boreal forest

Du, Enzai; Fang, Jingyun

doi:10.1890/es14-00109.1

Cited by 22 publications

(19 citation statements)

References 53 publications

(54 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The responses of leaf P concentrations to N deposition vary among studies, with reported increases (Huang et al 2012, Lü et al 2013), decreases (Sardans et al 2016), or neutral responses (Chen et al 2015). Consequently, N addition could cause an increase in the N:P ratio (You et al 2018), thus further intensifying P limitation (Du and Fang 2014) and even shifted from N limitation toward P limitation. In addition to N and P, K, Ca, and Mg are also essential nutrients for plant metabolism (Watanabe et al 2007, Tian et al 2019).…”

Section: Introductionmentioning

confidence: 99%

“…Boreal forests have been shown to be very sensitive to N deposition (Makipaa 1998, Strengbom et al 2002), and as such, external N inputs are expected to release plants from N limitations, although they might alter the nutrient stoichiometry by changing the ratios of N to other elements. In an old‐growth boreal forest in Northeast China, short‐term (three‐year) N addition increased the leaf N contents in trees and understory plants and induced N and P imbalances in canopy trees (Du and Fang 2014, Du 2017). Based on the results of a six‐year N‐enrichment experiment at the same site, the present study explores the long‐term effects of simulated N deposition on leaf nutrient concentrations and the leaf stoichiometry at the community level (including dominant tree and understory plants).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Effects of nitrogen addition on leaf nutrient stoichiometry in an old‐growth boreal forest

Xing

et al. 2021

Ecosphere

Self Cite

View full text Add to dashboard Cite

Boreal forests have been evidenced to be highly sensitive to enhanced nitrogen (N) deposition due to prevailing N limitations, and external N inputs from atmospheric deposition are expected to alter plant nutrient stoichiometry. Previous studies have mostly focused on the dominant tree species while neglecting understory plants that often play important role in the nutrient cycles in forest ecosystems. By conducting a six-year N-addition experiment with four treatments of 0 (control), 20 (low N), 50 (medium N), and 100 (high N) kg NÁha −1 Áyr −1 in a boreal forest in Northeast China, we assessed the responses of leaf nutrient stoichiometry (N, phosphorus [P], potassium [K], calcium [Ca], and magnesium [Mg]) for tree, shrubs, and grass. Although the responses of different species to N addition varied, six-year N addition, especially the medium and high N treatments, generally increased the leaf N concentration and decreased the leaf P and Ca concentrations.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effects of nitrogen addition on leaf nutrient stoichiometry in an old‐growth boreal forest

Xing

et al. 2021

Ecosphere

Self Cite

View full text Add to dashboard Cite

show abstract

“…Increasing atmospheric nitrogen (N) deposition is one of the most important global changes (Galloway et al, ; Gruber & Galloway, ), which can alter ecosystem nutrient cycling (Deng et al, ; Lucas et al, ; Zhang et al, ). Changes in concentrations of foliar nutrients, which are an important part of nutrient cycling, can reflect plant nutrient status and nutrient acquisition mechanisms (Han et al, ; Mao et al, ), and they have been widely studied in the past few decades (Bauer et al, ; Du & Fang, ; Elvir et al, ; Flückiger & Braun, ; You et al, ). However, most of these previous studies have focused only on the responses of plant N, phosphorus (P), and N:P ratio to N addition (Sardans et al, ; You et al, ; Yue et al, ), and our understanding of the effects of N addition on other foliar nutrients is limited.…”

Section: Introductionmentioning

confidence: 99%

Responses of Foliar Nutrient Status and Stoichiometry to Nitrogen Addition in Different Ecosystems: A Meta‐analysis

Mao

Zheng

2020

JGR Biogeosciences

View full text Add to dashboard Cite

Atmospheric nitrogen (N) deposition alters the cycling of nutrients in terrestrial ecosystems. However, there is limited knowledge regarding how N addition affects foliar nutrients beyond N and phosphorus (P) and their stoichiometry. We conducted a meta‐analysis, including 2,004 observations from 134 fertilization studies, to synthesize the effects of N addition on multiple foliar nutrients and stoichiometry in terrestrial ecosystems and to examine their potential controls. Overall, we found that N addition significantly decreased foliar P, potassium (K), calcium (Ca), magnesium (Mg), and calcium:aluminium (Ca:Al) by 3.22%, 7.58%, 9.55%, 5.65%, and 15.17%, respectively, but significantly increased foliar N, Al, N:K, N:Ca, and N:Mg by 19.02%, 6.99%, 21.06%, 27.65%, and 11.33%, respectively. Among the forest ecosystems, foliar N and P exhibited greater changes in temperate or boreal forests, and foliar K, Mg, and Mn showed greater decreases or increases in tropical forests after N addition. Nitrogen addition significantly affected foliar K (−7.55%), Mg (−6.46%), and Al (+6.81%) in forests but not in grasslands. Similarly, foliar K, Mg, and Al showed significant changes in woody plants but not in herbaceous plants. In addition, we found that environmental factors (e.g., ambient N deposition, mean annual precipitation, and soil pH) affected foliar nutrient responses of N, K, and Mg to N addition. In summary, our findings indicate that N addition affects foliar nutrient contents, with the extent of these effects differing among ecosystem type. This is important for understanding and predicting plant growth and nutrient dynamics under N deposition scenarios.

show abstract

“…This response results in faster biomass accumulation, which produces taller, skinnier trees [52]. Although this is more likely to affect young trees or seedlings exposed to elevated N, Du and Fang [53] also found weak growth in a mature forest. This may increase the mortality of young trees as a result of light limitation or the respiratory costs of early rapid growth [52].…”

Section: Observations Of N Impactsmentioning

confidence: 99%

Earth System Model Needs for Including the Interactive Representation of Nitrogen Deposition and Drought Effects on Forested Ecosystems

Drewniak

Gonzàlez-Meler

2017

Forests

View full text Add to dashboard Cite

Abstract:One of the biggest uncertainties of climate change is determining the response of vegetation to many co-occurring stressors. In particular, many forests are experiencing increased nitrogen deposition and are expected to suffer in the future from increased drought frequency and intensity. Interactions between drought and nitrogen deposition are antagonistic and non-additive, which makes predictions of vegetation response dependent on multiple factors. The tools we use (Earth system models) to evaluate the impact of climate change on the carbon cycle are ill equipped to capture the physiological feedbacks and dynamic responses of ecosystems to these types of stressors. In this manuscript, we review the observed effects of nitrogen deposition and drought on vegetation as they relate to productivity, particularly focusing on carbon uptake and partitioning. We conclude there are several areas of model development that can improve the predicted carbon uptake under increasing nitrogen deposition and drought. This includes a more flexible framework for carbon and nitrogen partitioning, dynamic carbon allocation, better representation of root form and function, age and succession dynamics, competition, and plant modeling using trait-based approaches. These areas of model development have the potential to improve the forecasting ability and reduce the uncertainty of climate models.

show abstract

Weak growth response to nitrogen deposition in an old‐growth boreal forest

Cited by 22 publications

References 53 publications

Effects of nitrogen addition on leaf nutrient stoichiometry in an old‐growth boreal forest

Effects of nitrogen addition on leaf nutrient stoichiometry in an old‐growth boreal forest

Responses of Foliar Nutrient Status and Stoichiometry to Nitrogen Addition in Different Ecosystems: A Meta‐analysis

Earth System Model Needs for Including the Interactive Representation of Nitrogen Deposition and Drought Effects on Forested Ecosystems

Contact Info

Product

Resources

About