Responses of forest ecosystems to increasing N deposition in China: A critical review

Tian, Di; Du, Enzai; Jiang, Lai; Ma, Suhui; Zeng, Wenjing; Zou, Anlong; Chan-Ying, FENG; Xu, Longchao; Xing, Aijun; Wang, Wei; Zheng, Chengyang; Ji, Chengjun; Shen, Haihua; Fang, Jingyun

doi:10.1016/j.envpol.2018.08.010

Cited by 128 publications

(54 citation statements)

References 115 publications

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“…analysis of Tian et al (2018), the content of soil total N in temperate forests of China were not significantly increased by N addition, this paper also confirmed this (Table 1). This could be attributed to low dosage and short duration of N addition, and increased N leaching (Tian et al, 2018) and raised emissions of N oxides (Butterbach-Bahl et al, 1997).…”

Section: Changes In Soil Properties Following Canopy N and Water Addisupporting

confidence: 78%

Soil fungal community is more sensitive to nitrogen deposition than increased rainfall in a mixed deciduous forest of China

et al. 2020

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Nitrogen (N) deposition and intensified rainfall can strongly affect soil microbial community, but compared with available studies on bacteria, those on soil fungi are quite limited. Here we carried out a field experiment in a mixed deciduous forest of China to study the influences of increased N deposition and rainfall on soil fungi by using quantitative PCR and high-throughput sequencing method. The results demonstrated that (1) N addition significantly increased fungal abundance and alpha diversity (richness, Shannon index and Invsimpson index), changed fungal community composition at OTU level, and marginally increased the relative abundance of Ascomycota and Zygomycota, while water addition showed no remarkable effects on fungal abundance, biodiversity and community composition. (2) N addition significantly increased the richness of saprotrophic fungi and pathogenic fungi, and the relative abundance of saprotrophic fungi, but water addition only slightly increased the abundance of pathogenic fungi. (3) Fungal composition dissimilarity closely correlated with the disparity of soil parameters as a whole. Soil NH 4 + -N exhibited strong positive correlation with the richness of pathogenic fungi and mycorrhizal fungi, while both soil moisture and NH 4 + -Ntightly correlated with soil fungal abundance and alpha diversity indices. We concluded that in this N-limited but non-water-limited forest ecosystem, N deposition posed stronger effects on soil fungi than increased rainfall, partially mediated by changes in soil properties.

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Section: Changes In Soil Properties Following Canopy N and Water Addisupporting

confidence: 78%

Soil fungal community is more sensitive to nitrogen deposition than increased rainfall in a mixed deciduous forest of China

et al. 2020

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“…High-level N deposition has resulted in an imbalance of atmospheric N and phosphorus (P) inputs to terrestrial ecosystems in China 10 . Moreover, the enhancement of N deposition in China has been evidenced to alter species composition and result in a loss of species diversity in terrestrial ecosystems 2 , 3 . Forest covers more than 20% of the land area in China and provides fundamental ecosystem services 11 .…”

Section: Background and Summarymentioning

confidence: 99%

A database of annual atmospheric acid and nutrient deposition to China’s forests

2018

Sci Data

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Anthropogenic emissions have substantially altered atmospheric acid and nutrient deposition in China. Understanding the status and characteristics of acid and nutrient deposition to China’s forests is crucial to assess the consequent impacts, and to better guide forest management options. Based on a comprehensive literature review, here I present an updated database for annual acid and nutrient deposition during the period 1991-2015 in China’s forests (CFAND 2.0). The database includes information from 56 forested sites on the water fluxes of bulk precipitation and throughfall, the concentrations of H+ (pH), dissolved inorganic nitrogen (N) (NH4+ and NO3−), sulfur (S), dissolved phosphorus (P), potassium (K+), calcium (Ca2+) and magnesium (Mg2+) in bulk precipitation and throughfall, and the fluxes of dissolved inorganic N, S, dissolved P, K+, Ca2+ and Mg2+ in bulk deposition and throughfall. This database will help to understand the spatial patterns of acid and nutrient deposition, validate modelling results of acid and nutrient deposition and assess the ecological effects of acid and nutrient deposition in China’s forests.

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“…Additionally, the effects of N addition on Rs in different terrestrial ecosystems are also inconsistent. For example, Tian et al (2018) conducted a meta-analysis on the response of soil respiration to N addition in China's forest ecosystems, and the results showed that the soil respiration of temperate forests had a nonlinear response to N addition gradient, which increased at low N levels and decreased at high levels. However, Rs in subtropical and tropical forests decreased with the increase of N addition.…”

Section: Introductionmentioning

confidence: 99%

Effects of long-term nitrogen addition on soil respiration and its components in a boreal forest

Liu

Yan

et al. 2020

Preprint

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Background Atmospheric nitrogen (N) deposition in boreal forest ecosystems increased gradually with the development of industry and agriculture, but the effects of N input on soil CO2 fluxes in these ecosystems were rarely reported in previous studies. To evaluate the effect of N addition on soil respiration is of great significance for understanding the distribution of soil carbon (C) on the N gradient in forest ecosystems.Results In this study, four treatment levels of N addition (0, 25, 50, 75 kg N ha− 1 yr− 1) were applied to natural Larix gmelinii forest in Greater Khingan Mountains of northeast China. We focused mainly on the dynamics of soil respiration (Rs), heterotrophic respiration (Rh), autotrophic respiration (Ra), microbial biomass C and N (MBC and MBN) and fine root biomass (FRB) in a growing season. We found that low N addition significant increased Rs, Rh and Ra, but with the increase of N addition, the promotion effect was gradually weakened. Medium N increased the temperature sensitivity (Q10) of Rs and Rh components, while medium N and high N significantly reduced the Q10 of Ra. Ra was positively correlated with FRB; Rh was positively correlated with soil MBC and MBN; and RS was probably driven by Ra from May to July, while by Rh in August and September.Conclusions Long-term N addition alleviated microbial N limitation, promoted soil respiration and accelerated soil C and N cycle in boreal forest ecosystems.

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Responses of forest ecosystems to increasing N deposition in China: A critical review

Cited by 128 publications

References 115 publications

Soil fungal community is more sensitive to nitrogen deposition than increased rainfall in a mixed deciduous forest of China

Soil fungal community is more sensitive to nitrogen deposition than increased rainfall in a mixed deciduous forest of China

A database of annual atmospheric acid and nutrient deposition to China’s forests

Effects of long-term nitrogen addition on soil respiration and its components in a boreal forest

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