Responses of terrestrial ecosystem phosphorus cycling to nitrogen addition: A meta‐analysis

Deng, Qi; Hui, Dafeng; Dennis, Sam; Reddy, K. C.; Xu, Xiaofeng

doi:10.1111/geb.12576

Cited by 232 publications

(124 citation statements)

References 245 publications

(136 reference statements)

Supporting

Mentioning

106

Contrasting

Order By: Relevance

“…It is not surprising that foliar N concentrations showed only a minor increase in tropical forests, because plant growth in tropical forests is generally not limited by N (Matson et al, ; Vitousek et al, ). The negative response of foliar P concentrations to N addition in temperate and boreal forests, but not in tropical forests, was consistent with previous studies (Campo & Dirzo, ; Deng et al, ; You et al, ), and one main cause for this is the difference in the degree of N versus P limitation among these ecosystems. Generally, temperate and boreal forests are more N limited compared to tropical forests, and the decrease in foliar P may be a result of P consumption due to N‐induced growth (Agren, ; Sardans et al, ; Vitousek et al, ).…”

Section: Discussionsupporting

confidence: 92%

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

Section: Discussionsupporting

confidence: 92%

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

show abstract

“…One is the fertilization regimes (i.e., nutrient-addition rates, duration, and total load; see Section 22 for details), which are known to affect the extent of nutrient impacts on ecosystem functioning (Deng, Hui, Dennis, & Reddy, 2017;Zhou, Wang, Zheng, Jiang, & Luo, 2017). One is the fertilization regimes (i.e., nutrient-addition rates, duration, and total load; see Section 22 for details), which are known to affect the extent of nutrient impacts on ecosystem functioning (Deng, Hui, Dennis, & Reddy, 2017;Zhou, Wang, Zheng, Jiang, & Luo, 2017).…”

Section: Introductionmentioning

confidence: 99%

Global pattern and controls of biological nitrogen fixation under nutrient enrichment: A meta‐analysis

Zheng

Zhou

Luo

et al. 2019

Global Change Biology

142

View full text Add to dashboard Cite

Biological nitrogen (N) fixation (BNF), an important source of N in terrestrial ecosystems, plays a critical role in terrestrial nutrient cycling and net primary productivity. Currently, large uncertainty exists regarding how nutrient availability regulates terrestrial BNF and the drivers responsible for this process. We conducted a global meta‐analysis of terrestrial BNF in response to N, phosphorus (P), and micronutrient (Micro) addition across different biomes (i.e, tropical/subtropical forest, savanna, temperate forest, grassland, boreal forest, and tundra) and explored whether the BNF responses were affected by fertilization regimes (nutrient‐addition rates, duration, and total load) and environmental factors (mean annual temperature [MAT], mean annual precipitation [MAP], and N deposition). The results showed that N addition inhibited terrestrial BNF (by 19.0% (95% confidence interval [CI]: 17.7%‒20.3%); hereafter), Micro addition stimulated terrestrial BNF (30.4% [25.7%‒35.3%]), and P addition had an inconsistent effect on terrestrial BNF, i.e., inhibiting free‐living N fixation (7.5% [4.4%‒10.6%]) and stimulating symbiotic N fixation (85.5% [25.8%‒158.7%]). Furthermore, the response ratios (i.e., effect sizes) of BNF to nutrient addition were smaller in low‐latitude (<30°) biomes (8.5%‒36.9%) than in mid‐/high‐latitude (≥30°) biomes (32.9%‒61.3%), and the sensitivity (defined as the absolute value of response ratios) of BNF to nutrients in mid‐/high‐latitude biomes decreased with decreasing latitude (p ≤ 0.009; linear/logarithmic regression models). Fertilization regimes did not affect this phenomenon (p > 0.05), but environmental factors did affect it (p < 0.001) because MAT, MAP, and N deposition accounted for 5%‒14%, 10%‒32%, and 7%‒18% of the variance in the BNF response ratios in cold (MAT < 15°C), low‐rainfall (MAP < 2,500 mm), and low‐N‐deposition (<7 kg ha−1 year−1) biomes, respectively. Overall, our meta‐analysis depicts a global pattern of nutrient impacts on terrestrial BNF and indicates that certain types of global change (i.e., warming, elevated precipitation and N deposition) may reduce the sensitivity of BNF in response to nutrient enrichment in mid‐/high‐latitude biomes.

show abstract

“…Nitrogen addition can also influence soil nematodes by altering plant diversity and consequently substrate quantity and diversity (De Deyn, Raaijmakers, Van Ruijven, Berendse, & Van Der Putten, ). Moreover, the addition of N can restructure soil nematode communities by affecting litter accumulation, given that it can alter the quantity and quality of aboveground litter input (Deng, Hui, Dennis, & Reddy, ; Zuo & Knops, ).…”

Section: Introductionmentioning

confidence: 99%

Interactive effects of nitrogen addition and litter on soil nematodes in grassland

Liu

Chen

et al. 2019

European J Soil Science

View full text Add to dashboard Cite

Soil nematodes are ubiquitous in terrestrial ecosystems. Nematodes are one of the most abundant groups of soil invertebrates, and they influence ecosystem processes and functions. Plant litter is a fundamental factor in controlling the structure of belowground communities. The addition of nitrogen (N) can restructure soil nematode communities by affecting the quantity and quality of litter input into soil. However, little is known about how N and litter interact to affect nematode communities. We examined the response of soil nematodes to the addition of N and litter manipulation (i.e. initial litter, removal, addition) in a 6‐year field experiment in grassland, and quantified the effects of additions of N and litter on nematode abundance, diversity and community structure through the plant community and nutrients in soil. There were interactive effects between additions of N and litter on nematode numbers and trophic group abundance, the Shannon–Wiener index (H′) and the maturity index. The addition of litter without that of N increased the total and trophic group abundance, whereas the addition of N and litter decreased nematode H′ and the maturity index. Structural equation modelling (SEM) revealed that the addition of N decreased herbivore abundance through increasing plant N concentration, and directly decreased fungivore abundance and indirectly decreased bacterivore and omnivore predator abundance through fungivores. The positive effects of litter addition on nematodes without the addition of N and its negative effects on treatments with the addition of N suggested that without added N, increased litter accumulation could benefit the soil nematode community. However, under scenarios of N deposition, grassland management that reduced litter accumulation, such as grazing and mowing, could also benefit soil nematode communities. Highlights There were interactive effects between additions of N and litter on nematode community N addition decreased nematode abundance and diversity in litter addition treatments Without N addition, litter addition increased nematode abundance and diversity Nematodes were affected mainly through decreased fungivore abundance

show abstract

Responses of terrestrial ecosystem phosphorus cycling to nitrogen addition: A meta‐analysis

Cited by 232 publications

References 245 publications

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

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

Global pattern and controls of biological nitrogen fixation under nutrient enrichment: A meta‐analysis

Interactive effects of nitrogen addition and litter on soil nematodes in grassland

Contact Info

Product

Resources

About