Effects of nitrogen addition on C:N:P stoichiometry in moss crust-soil continuum in the N-limited Gurbantünggüt Desert, Northwest China

Liu, Jianguo; Liu, Weiguo; Long, Xiaojing; Chen, Yinguang; Huang, Tinwen; Huo, Jusong; Duan, Luchun; Wang, Xiyuan

doi:10.1016/j.ejsobi.2020.103174

Cited by 20 publications

(21 citation statements)

References 40 publications

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“…In this study, we found that the high concentration of biochar addition could efficiently replenish soil nutrition, reduce the rate of soil nutrient release, and reduce nutrient loss [ 42 ]. More specifically, the content of C and N was related to the level of biochar addition; the more biochar added, the higher the C and N content, and the soil N showed a “V” type characteristic by the month; this is consistent with the results of the nitrogen addition experiment on C: N: P stoichiometry in moss crust-soil continuum [ 25 ]. It indicated that the nutrients from biochar contributed to the increases in C and N in the soil and biochar, which can effectively inhibit the leaching and migration of vegetation soil nitrogen [ 41 ].…”

Section: Discussionsupporting

confidence: 74%

“…The dominant plant species include Haloxylon ammodendron , Haloxylon persicum , and some dwarf shrubs, specifically Ephedra distachys , Calligonum mongolicum, Reaumuria soongorica, Artemisia arenaria, and Seriphidium terrae-albae . In our study areas, moss crusts were 8–16 mm thick, biomass was 3.22–8.65 g dm 2 , and coverage was 61.2–86.8% [ 25 ].…”

Section: Methodsmentioning

confidence: 99%

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Biochar Addition Alters C: N: P Stoichiometry in Moss Crust-Soil Continuum in Gurbantünggüt Desert

Chang

Liu

Mao

et al. 2022

Plants

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The biogeochemical cycling of soil elements in ecosystems has changed under global changes, including nutrients essential for plant growth. The application of biochar can improve the utilization of soil nutrients by plants and change the stoichiometry of carbon (C), nitrogen (N), and phosphorus (P) in plants and soil. However, the response of ecological stoichiometry in a moss crust-soil continuum to local plant biochar addition in a desert ecosystem has not been comprehensively explored. Here, we conducted a four-level Seriphidium terrae-albae biochar addition experiment (CK, 0 t ha−1; T1, 3.185 t ha−1; T2, 6.37 t ha−1; T3, 12.74 t ha−1) to elucidate the influence of biochar input on C: N: P stoichiometry in moss crusts (surface) and their underlying soil (subsurface). The results showed that biochar addition significantly affected the C, N, and P both of moss crusts and their underlying soil (p < 0.001). Biochar addition increased soil C, N, and P concentrations, and the soil N content showed a monthly trend in T3. The C, N, and P concentrations of moss crusts increased with the addition levels of biochar, and the moss crust P concentrations showed an overall increasing trend by the month. Moreover, the soil and moss crust C: P and N: P ratios both increased. There was a significant correlation between moss crust C, N, and P and soil C and N. Additionally, nitrate nitrogen (NO3−N), N: P, C: P, EC, pH, soil moisture content (SMC), and N have significant effects on the C, N, and P of moss crusts in turn. This study revealed the contribution of biochar to the nutrient cycle of desert system plants and their underlying soil from the perspective of stoichiometric characteristics, which is a supplement to the theory of plant soil nutrition in desert ecosystems.

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Section: Discussionsupporting

confidence: 74%

Section: Methodsmentioning

confidence: 99%

Biochar Addition Alters C: N: P Stoichiometry in Moss Crust-Soil Continuum in Gurbantünggüt Desert

Chang

Liu

Mao

et al. 2022

Plants

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“…Recently, numerous studies have discussed the eco-stoichiometry of soil C, N, and P in terrestrial ecosystems (e.g., wetland, grassland, forest, and desert oasis). The results indicated that soil C:N can predict the nitrate leaching degree of forest soil, while the soil N:P ratio is able to reflect the degree of vegetation disturbance [6][7][8]. C and N levels play a decisive role in the changing process of regional soil C, N, and P eco-stoichiometric characteristics [9,10].…”

Section: Introductionmentioning

confidence: 97%

“…However, in the typical black soil region of China, most studies have focused on the topsoil, while little is known about the vertical patterns in soil C, N, and P and their stoichiometric ratios along with the soil profile [16,17]. Only a few studies dealt with the quantitative analysis of the relationship between eco-stoichiometry of soil C, N, and P and the driving factors at a regional scale, especially with the effects of natural and human factors being well recognized [8,9,18].…”

Section: Introductionmentioning

confidence: 99%

Role of Environment Variables in Spatial Distribution of Soil C, N, P Ecological Stoichiometry in the Typical Black Soil Region of Northeast China

Chen

Shi

Chen³

et al. 2022

Sustainability

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The effects of environmental factors on topsoil nutrient distribution have been extensively discussed, but it remains unclear how they affect spatial characteristics of soil carbon (C), nitrogen (N), and phosphorus (P) stoichiometry at different depths. We collected 184 soil samples in the typical black soil region of northeast China. Ordinary kriging was performed to describe the spatial distribution of soil C, N, and P eco-stoichiometry. Redundancy analysis was used to explore relationships between C:N:P ratios and physicochemical characteristics. The soil classification was studied by hierarchical cluster analysis. The mean C, N, and P contents ranged from 15.67 to 20.08 g·kg−1, 1.15 to 1.51 g·kg−1, and 0.80 to 0.90 g·kg−1 within measured depths. C, N, and P concentrations and stoichiometry increased from southwest to northeast, and the Songhua River was identified as an important transition zone. At 0–20 cm, soil water content explained most of the C, N, and P content levels and ratios in cluster 1, while latitude had the highest explanatory ability in cluster 2. For 20–40 cm, soil bulk density was the main influencing factor in both clusters. Our findings contribute to an improved knowledge of the balance and ecological interactions of C, N, and P in northeast China for its sustainability.

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“…Mosses affect microbial activity in soil by regulating soil temperature and moisture (Luthin and Guymon, 1974;Gornall et al, 2007) and by releasing nutrients, such as dissolved organic carbon and potassium (Wilson and Coxson, 1999). In the boreal forest, feather mosses also play an important role in the carbon (C) and nitrogen (N) cycles, and contribute up to a third of the total forest primary productivity (DeLuca et al, 2002;Turetsky, 2003;Turetsky et al, 2010;Wardle et al, 2011;Liu et al, 2020). In addition, the reaction of biological nitrogen fixation (BNF), catalyzed by diazotrophic bacteria associated with feather moss, can contribute up to 50% of new N inputs (Turetsky et al, 2012; on par with atmospheric deposition.…”

Section: Introductionmentioning

confidence: 99%

Quantification of Moss-Associated Cyanobacteria Using Phycocyanin Pigment Extraction

2021

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In the boreal forest, cyanobacteria can establish associations with feather moss and realize the biological nitrogen fixation (BNF) reaction, consisting in the reduction of atmospheric dinitrogen into bioavailable ammonium. In this ecosystem, moss-associated cyanobacteria are the main contributors to BNF by contributing up to 50% of new N input. Current environmental changes driven by anthropogenic activities will likely affect cyanobacteria activity (i.e., BNF) and populations inhabiting mosses, leading to potential important consequences for the boreal forest. Several methods are available to efficiently measure BNF activity, but quantifying cyanobacteria biomass associated with moss is challenging because of the difficulty to separate bacteria colonies from the host plant. Attempts to separate cyanobacteria by shaking or sonicating in water were shown to be poorly efficient and repeatable. The techniques commonly used, microscopic counting and quantitative PCR (qPCR) are laborious and time-consuming. In aquatic and marine ecosystems, phycocyanin (PC), a photosynthesis pigment produced by cyanobacteria, is commonly used to monitor cyanobacteria biomass. In this study, we tested if PC extraction and quantification can be used to estimate cyanobacteria quantity inhabiting moss. We report that phycocyanin can be easily extracted from moss by freeze/thaw disturbance of cyanobacteria cells and can be quickly and efficiently measured by spectrofluorometry. We also report that phycocyanin extraction is efficient (high recovery), repeatable (relative SD < 13%) and that no significant matrix effects were observed. As for aquatic systems, the main limitation of cyanobacteria quantification using phycocyanin is the difference of cellular phycocyanin content between cyanobacteria strains, suggesting that quantification can be impacted by cyanobacteria community composition. Nonetheless, we conclude that phycocyanin extraction and quantification is an easy, rapid, and efficient tool to estimate moss-associated cyanobacteria number.

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Effects of nitrogen addition on C:N:P stoichiometry in moss crust-soil continuum in the N-limited Gurbantünggüt Desert, Northwest China

Cited by 20 publications

References 40 publications

Biochar Addition Alters C: N: P Stoichiometry in Moss Crust-Soil Continuum in Gurbantünggüt Desert

Biochar Addition Alters C: N: P Stoichiometry in Moss Crust-Soil Continuum in Gurbantünggüt Desert

Role of Environment Variables in Spatial Distribution of Soil C, N, P Ecological Stoichiometry in the Typical Black Soil Region of Northeast China

Quantification of Moss-Associated Cyanobacteria Using Phycocyanin Pigment Extraction

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