Microbial membranes related to the thermal acclimation of soil heterotrophic respiration in a temperate steppe in northern China

2019 ◽  
Vol 71 (3) ◽  
pp. 484-494
Author(s):  
Ruichang Shen ◽  
Ming Xu ◽  
Yonggang Chi ◽  
Shen Yu ◽  
Shiqiang Wan ◽  
...  
Keyword(s):  
Northern China ◽  
Thermal Acclimation ◽  
Heterotrophic Respiration ◽  
Temperate Steppe ◽  
Soil Heterotrophic Respiration

Acclimation of leaf dark respiration to nocturnal and diurnal warming in a semiarid temperate steppe

2013 ◽  
Vol 40 (11) ◽  
pp. 1159 ◽  
Author(s):  
Yonggang Chi ◽  
Ming Xu ◽  
Ruichang Shen ◽  
Shiqiang Wan
Keyword(s):  
Dark Respiration ◽  
Temperature Response ◽  
Terrestrial Ecosystems ◽  
Northern China ◽  
Thermal Acclimation ◽  
Nonstructural Carbohydrates ◽  
Temperate Steppe ◽  
Response Curves ◽  
Diurnal Warming ◽  
Leaf Dark Respiration

A better understanding of thermal acclimation of leaf dark respiration in response to nocturnal and diurnal warming could help accurately predict the changes in carbon exchange of terrestrial ecosystems under global warming, especially under the asymmetric warming. A field manipulative experiment was established with control, nocturnal warming (1800–0600 hours), diurnal warming (0600–1800 hours), and diel warming (24 h) under naturally fluctuating conditions in a semiarid temperate steppe in northern China in April 2006. Temperature response curves of in situ leaf dark respiration for Stipa krylovii Roshev. were measured at night (Rn) and after 30 min of darkness imposed in the daytime (Rd). Leaf nonstructural carbohydrates were determined before sunrise and at sunset. Results showed that Rn could acclimate to nocturnal warming and diurnal warming, but Rd could not. The decreases in Q10 (temperature sensitivity) of Rn under nocturnal-warming and diurnal warming regimes might be attributed to greater depletion of total nonstructural carbohydrates (TNC). The real-time and intertwined metabolic interactions between chloroplastic and mitochondrial metabolism in the daytime could affect the impacts of warming on metabolite pools and the distinct response of Rn and Rd to warming. Projection on climate change–carbon feedback under climate warming must account for thermal acclimation of leaf dark respiration separately by Rn and Rd.

Impacts of urea N addition on soil microbial community in a semi-arid temperate steppe in northern China

2008 ◽  
Vol 311 (1-2) ◽  
pp. 19-28 ◽  
Author(s):  
Naili Zhang ◽  
Shiqiang Wan ◽  
Linghao Li ◽  
Jie Bi ◽  
Mingming Zhao ◽  
...  
Keyword(s):  
Microbial Community ◽  
Soil Microbial Community ◽  
Northern China ◽  
N Addition ◽  
Temperate Steppe ◽  
Soil Microbial ◽  
Semi Arid

scholarly journals A moisture function of soil heterotrophic respiration that incorporates microscale processes

2018 ◽  
Vol 9 (1) ◽  
Author(s):  
Zhifeng Yan ◽  
Ben Bond-Lamberty ◽  
Katherine E. Todd-Brown ◽  
Vanessa L. Bailey ◽  
SiLiang Li ◽  
...  
Keyword(s):  
Heterotrophic Respiration ◽  
Soil Heterotrophic Respiration

scholarly journals Soil heterotrophic respiration assessment using minimally disturbed soil microcosm cores

MethodsX ◽  
2018 ◽  
Vol 5 ◽  
pp. 834-840 ◽  
Author(s):  
Louis-Pierre Comeau ◽  
Derrick Y.F. Lai ◽  
Jane Jinglan Cui ◽  
Jodie Hartill
Keyword(s):  
Soil Microcosm ◽  
Heterotrophic Respiration ◽  
Disturbed Soil ◽  
Soil Heterotrophic Respiration

Fifty years of crop residue management have a limited impact on soil heterotrophic respiration

2013 ◽  
Vol 180 ◽  
pp. 102-111 ◽  
Author(s):  
Pauline Buysse ◽  
Anne-Caroline Schnepf-Kiss ◽  
Monique Carnol ◽  
Sandrine Malchair ◽  
Christian Roisin ◽  
...  
Keyword(s):  
Crop Residue ◽  
Heterotrophic Respiration ◽  
Residue Management ◽  
Crop Residue Management ◽  
Limited Impact ◽  
Soil Heterotrophic Respiration

scholarly journals Leveraging the signature of heterotrophic respiration on atmospheric CO<sub>2</sub> for model benchmarking

2020 ◽  
Vol 17 (5) ◽  
pp. 1293-1308 ◽  
Author(s):  
Samantha J. Basile ◽  
Xin Lin ◽  
William R. Wieder ◽  
Melannie D. Hartman ◽  
Gretchen Keppel-Aleks
Keyword(s):  
Large Scale ◽  
Transport Model ◽  
Heterotrophic Respiration ◽  
Atmospheric Co2 ◽  
Scale Model ◽  
Future Research ◽  
Tracer Transport ◽  
Test Bed ◽  
Model Simulations ◽  
Soil Heterotrophic Respiration

Abstract. Spatial and temporal variations in atmospheric carbon dioxide (CO2) reflect large-scale net carbon exchange between the atmosphere and terrestrial ecosystems. Soil heterotrophic respiration (HR) is one of the component fluxes that drive this net exchange, but, given observational limitations, it is difficult to quantify this flux or to evaluate global-scale model simulations thereof. Here, we show that atmospheric CO2 can provide a useful constraint on large-scale patterns of soil heterotrophic respiration. We analyze three soil model configurations (CASA-CNP, MIMICS, and CORPSE) that simulate HR fluxes within a biogeochemical test bed that provides each model with identical net primary productivity (NPP) and climate forcings. We subsequently quantify the effects of variation in simulated terrestrial carbon fluxes (NPP and HR from the three soil test-bed models) on atmospheric CO2 distributions using a three-dimensional atmospheric tracer transport model. Our results show that atmospheric CO2 observations can be used to identify deficiencies in model simulations of the seasonal cycle and interannual variability in HR relative to NPP. In particular, the two models that explicitly simulated microbial processes (MIMICS and CORPSE) were more variable than observations at interannual timescales and showed a stronger-than-observed temperature sensitivity. Our results prompt future research directions to use atmospheric CO2, in combination with additional constraints on terrestrial productivity or soil carbon stocks, for evaluating HR fluxes.

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