Nitrogen depositions increase soil respiration and decrease temperature sensitivity in a Moso bamboo forest

Li, Quan; Song, Xinzhang; Chang, Scott X.; Peng, Changhui; Xiao, Wei; Zhang, Junbo; Xiang, Wenhua; Yan, Li; Wang, Weifeng

doi:10.1016/j.agrformet.2019.01.012

Cited by 88 publications

(60 citation statements)

References 48 publications

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“…To date, it is still unclear whether Moso bamboo can emit CH 4 and how N deposition may influence plant CH 4 emissions, which contributes to uncertainty of our results. Our previous study in the same site also found that N deposition significantly increased the loss of soil DOC and dissolved organic nitrogen (28) and soil respiration rate (41), which might contribute to soil C variation and N 2 O emission. In addition, continued N fertilization and atmospheric N deposition can result in continuous declines in soil pH, which likely induce aluminum toxicity or other problems, and eventually maybe suppress plant growth and C uptake capacity.…”

Section: Bcmentioning

confidence: 59%

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Nitrogen addition increased CO ₂ uptake more than non-CO ₂ greenhouse gases emissions in a Moso bamboo forest

et al. 2020

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Atmospheric nitrogen (N) deposition affects the greenhouse gas (GHG) balance of ecosystems through the net atmospheric CO2 exchange and the emission of non-CO2 GHGs (CH4 and N2O). We quantified the effects of N deposition on biomass increment, soil organic carbon (SOC), and N2O and CH4 fluxes and, ultimately, the net GHG budget at ecosystem level of a Moso bamboo forest in China. Nitrogen addition significantly increased woody biomass increment and SOC decomposition, increased N2O emission, and reduced soil CH4 uptake. Despite higher N2O and CH4 fluxes, the ecosystem remained a net GHG sink of 26.8 to 29.4 megagrams of CO2 equivalent hectare−1 year−1 after 4 years of N addition against 22.7 hectare−1 year−1 without N addition. The total net carbon benefits induced by atmospheric N deposition at current rates of 30 kilograms of N hectare−1 year−1 over Moso bamboo forests across China were estimated to be of 23.8 teragrams of CO2 equivalent year−1.

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Section: Bcmentioning

confidence: 59%

“…There were several understory species with a forest floor coverage of 5% and a total herbal biomass of 14.6 kg ha −1 . The initial stand and soil characteristics can be found in (41).…”

Section: Study Sitementioning

confidence: 99%

Nitrogen addition increased CO ₂ uptake more than non-CO ₂ greenhouse gases emissions in a Moso bamboo forest

et al. 2020

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“…The average annual temperature of the site was 15.6 °C with an average annual precipitation of 1420 mm, and an average of 230 frost-free days per year. The soil is classified as Ferrisols derived from granite [16], and the terrain is comprised of low hills. Local N deposition rate is 30-37 kg•hm -2 •a -1 [16].…”

Section: Study Sitementioning

confidence: 99%

“…China is currently one of the three areas worldwide with the greatest concentration of N deposition. Particularly in the southeast regions, the most severe N deposition has reached 63.53 kg•ha -1 •yr -1 [15,16]. Nitrogen deposition has resulted in increases in soil available N and changes in soil pH and N:P ratios.…”

Section: Introductionmentioning

confidence: 99%

Effects of nitrogen deposition and phosphorus addition on arbuscular mycorrhizal fungi of Chinese fir (Cunninghamia lanceolata)

Lin

Wang

et al. 2019

Preprint

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Background Nitrogen (N) deposition is a key factor that affects terrestrial biogeochemical cycles with a growing trend, especially in the southeast region of China, where shortage of available phosphorus (P) is particularly acute and P has become a major factor limiting plant growth and productivity. Arbuscular mycorrhizal fungi (AMF) establish a mutualistic symbiosis with plants, and play an important role in enhancing plant stress resistance. However, the response of AMF to the combined effects of N deposition and P additions is poorly understood. Results Our results showed that N deposition significantly increased AMF root colonization rates and spore density, but inhibited both symbiotic relationship and spore propagation. In N-free plots, P addition significantly increased AMF root colonization rates, but did not significantly alter spore density. In low-N plots, AMF root colonization rates significantly decreased under low P addition, but significantly increased under high P addition, and spore density exhibited a significant decline under both low and high P additions. In high-N plots, AMF root colonization rates and spore density significantly increased under P additions. In general, AMF were closely related to the relative content of N and P in the soil. Interactive effects of simulated N deposition and P addition on both AMF root colonization rates and spore density were significant. AMF root colonization rates were significantly negatively correlated with soil moisture. Conclusions Moderate N deposition or P addition can weaken the symbiotic relationship between plants and AMF, significantly reducing AMF colonization rates and inhibiting spore propagation. However, a moderate addition of P greatly enhances spore yield. Soil moisture content is the main factor regulating AMF colonization rates. In the case of interactive effects, the AMF colonization rates and spore density are affected by the relative content of N and P in the soil.

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“…Nonetheless, a mean Q 10 value of 1.6 for ER is found based on the FLUXNET database built from a global collection of eddy covariance CO 2 flux observations [3]. Moreover, there are increasing evidences that Q 10 of ER is not constant instead varying with change in air temperature [4], precipitation [5], atmospheric CO 2 [6] and atmospheric nitrogen deposition [7]. ER, a major flux in the global carbon cycle, drives biosynthesis, cellular maintenance and active transport in plants [8].…”

Section: Introductionmentioning

confidence: 99%

Temperature Sensitivity in Individual Components of Ecosystem Respiration Increases along the Vertical Gradient of Leaf–Stem–Soil in Three Subtropical Forests

Chi

Yang

Zhou

et al. 2020

Forests

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Temperature sensitivity (Q10) of ecosystem respiration (ER) is a crucial parameter for predicting the fate of CO2 in terrestrial e cosystems under global warming. Most studies focus their attention in the variation of Q10 in one or two components of ER, but not in the integration or comparison among Q10 in major components of ER. Vertical and seasonal variations in individual components, including leaf respiration, stem respiration and soil respiration, of ER were observed synchronously along the gradient of leaf–stem–soil over a 2 year period in three forest stands dominated by masson pine, loblolly pine and oak, respectively, in a subtropical forest ecosystem of central China. We found that Q10 in individual components of ER increased along the vertical gradient of leaf–stem–soil. The vertical pattern of Q10 in individual components of ER was ascribed to variations of diurnal temperature range (DTR) and activation energy (ΔHa). These results suggest that a vertical pattern of Q10 in individual components of ER along the gradient of leaf–stem–soil should be taken into consideration in process-based models that simulate respiratory carbon flux in terrestrial ecosystems.

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Nitrogen depositions increase soil respiration and decrease temperature sensitivity in a Moso bamboo forest

Cited by 88 publications

References 48 publications

Nitrogen addition increased CO ₂ uptake more than non-CO ₂ greenhouse gases emissions in a Moso bamboo forest

Nitrogen addition increased CO ₂ uptake more than non-CO ₂ greenhouse gases emissions in a Moso bamboo forest

Effects of nitrogen deposition and phosphorus addition on arbuscular mycorrhizal fungi of Chinese fir (Cunninghamia lanceolata)

Temperature Sensitivity in Individual Components of Ecosystem Respiration Increases along the Vertical Gradient of Leaf–Stem–Soil in Three Subtropical Forests

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Nitrogen depositions increase soil respiration and decrease temperature sensitivity in a Moso bamboo forest

Cited by 88 publications

References 48 publications

Nitrogen addition increased CO 2 uptake more than non-CO 2 greenhouse gases emissions in a Moso bamboo forest

Nitrogen addition increased CO 2 uptake more than non-CO 2 greenhouse gases emissions in a Moso bamboo forest

Effects of nitrogen deposition and phosphorus addition on arbuscular mycorrhizal fungi of Chinese fir (Cunninghamia lanceolata)

Temperature Sensitivity in Individual Components of Ecosystem Respiration Increases along the Vertical Gradient of Leaf–Stem–Soil in Three Subtropical Forests

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Nitrogen addition increased CO ₂ uptake more than non-CO ₂ greenhouse gases emissions in a Moso bamboo forest

Nitrogen addition increased CO ₂ uptake more than non-CO ₂ greenhouse gases emissions in a Moso bamboo forest