Interpreting the dependence of soil respiration on soil temperature and moisture in an oasis cotton field, central Asia

Zhao, Zhi Min; Cheng, Zhao; Yan, Ying Yu; Li, Ju Yan; Li, Jun; Shi, Feng Zhi

doi:10.1016/j.agee.2013.01.013

Cited by 17 publications

(13 citation statements)

References 41 publications

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“…This result is consistent with previous studies, which suggested that soil respiration has a significant positive correlation with temperature if soil water content is not a limiting factor ( Zhao et al, 2013; Kainiemi et al, 2015). Second, several publications suggested that the temperature sensitivity of soil respiration decreased with increasing temperature ( Zheng et al, 2009; Zhao et al, 2013). Accordingly, in this study, the increased rate of soil respiration decreased as temperature further increased from 11.35°C to 13.35°C.…”

Section: Resultssupporting

confidence: 93%

“…Lastly, soil respiration decreased as temperature further increased by 2°C. This was probably attributed to the impact of a higher temperature on plant biomass and physiological processes, which further inhibited CO 2 emission from root respiration following global warming ( Zhao et al, 2013). The impacts of precipitation change on soil respiration were mainly attributed to an increase in the number of periods with higher soil moisture content, which enhanced root biomass and activity and consequently increased soil respiration ( Jiang et al, 2013).…”

Section: Resultsmentioning

confidence: 99%

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Modelling soil and root respiration in a cotton field using the DNDC model

Zhao

2015

J. Plant Nutr. Soil Sci.

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The DNDC model was able to simulate the temporal variation in soil respiration, although it underestimated the cumulative CO 2 emission by 15%. A good correlation was found between predicted and measured root respiration. However, this model is limited in its ability to simulate heterotrophic respiration which was underestimated by 59%. The sensitivity tests showed that temperature, precipitation, soil organic C content, fertilization, and irrigation had a positive effect on soil respiration.

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Section: Resultssupporting

confidence: 93%

Section: Resultsmentioning

confidence: 99%

Modelling soil and root respiration in a cotton field using the DNDC model

Zhao

2015

J. Plant Nutr. Soil Sci.

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“…Measurement with the equipment at each sampling point took 120 s, which was long enough to obtain reliable estimates of soil respiration [11]. Meanwhile, we also obtained the soil CO2 concentrations at the depths of 5 and 10 cm by CO2 monitoring sensors (GMM222, Vaisala, Finland) [12]. Soil temperature and moisture were measured directly using Hydra Probes sensors (Hydra Probe II, Stevens Water Monitoring Systems Inc., Portland, Oregon, USA).…”

Section: Experiments Design and Field Managementmentioning

confidence: 99%

Soil respiration and the contribution of root respiration of cotton (Gossypium hirsutum L.) in arid region

Zhao

et al. 2015

Acta Ecologica Sinica

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“…Em regiões tropicais, como em uma pastagem na Amazônia, as variações sazonais na respiração do solo foram explicadas pela temperatura e umidade do solo ou somente pela umidade do solo (Davidson et al, 2000;Gaumont-Guay et al, 2006;Tian et al, 2011;Atarashi-Andoh et al, 2012;Zhao et al, 2013). Também foi encontrada uma forte tendência em aumentar a Es em função da temperatura em pastagens tropicais (Davidson et al 2000, Wood et al, 2012.…”

Section: Discussão (Experimento I)unclassified

“…No entanto, geralmente é difícil separar o efeito isolado da temperatura das outras variáveis climáticas interrelacionadas, porque podem afetar diversas respostas, como a umidade do solo (Saurer et al, 1995;Anderson et al, 1998;Ferrio et al, 2003;Zhao et al, 2013). Neste trabalho, os valores de δ 13 C das folhas possivelmente indicam a ausência de efeitos pronunciados na abertura dos estômatos ou na difusão do CO2 para o interior da folha.…”

Section: Discussão (Experimento I)unclassified

Efeitos do aquecimento e da elevada concentração atmosférica de CO2 na dinâmica de carbono e nitrogênio do solo e de duas forrageiras tropicais (Panicum maximum e Stylosanthes capitata).

Silva¹

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BIOLOGIA COMPARADA RIBEIRÃO PRETO 2014 Autorizo a reprodução e divulgação total ou parcial deste trabalho, por qualquer meio convencional ou eletronico, para fins de estudo e pesquisa, desde que citada a fonte. Silva, Laís Batista CarmoEfeitos do aquecimento e da elevada concentração atmosférica de CO2 na dinâmica de carbono e nitrogênio do solo e de duas forrageiras tropicais (Panicum maximum e Stylosanthes capitata). Ribeirão Preto, 2014. Aos Professores da UNESP-Jaboticabal, Dr. Newton La Scala Junior, pela ajuda oferecida e empréstimo do aparelho LI-8100A utilizado nos experimentos; e Dr. Wanderley ABSTRACTThe C and N dynamics may be interpreted as a flow within the ecosystem that encompasses the physiological processes that occur in plants and soil. In this study, we used of a new combined FACE and T-FACE system, to allow plants of Stylosanthes capitata Vogel (C3) and Panicum maximum Jacq. (C4) to be exposed to higher CO2 concentrations and temperatures, respectively. The system named Trop-T-FACE was established at the Ribeirão Preto campus of the University of São Paulo (USP). Two experiments were conducted using this system; the first involved the warming of 2° C in the plant canopy of Stylosanthes capitata Vogel and resulted in an intensification of N short term cycle probably due to greater biological N2 fixation by legumes, plus larger soil respiration rates and reduced rates of soil enzymatic activity. In the second experiment, plants of S. capitata and P. maximum were exposed to 4 treatments: a control (ambient temperature and ambient CO2); eT (ambient CO2 concentration and a canopy temperature of 2 °C greater than the ambient temperature), eC (600 µmol mol -1 CO2 and ambient temperature), and eC + eT (600 µmol mol -1 CO2 and a canopy temperature of 2 °C greater than the ambient temperature). Results from soil respiration indicated an effect of warming on soil respiration by effect of increment in soil temperature. Isotopic analysis showed, from the third day of the experiment, the decay of δ 13 C values in both species in the treatments with elevated CO2 as a result of assimilation of the new C. Whereas δ 15 N showed only positive values in C3, in C4 we found negative and positive values, but both did not indicate a clear pattern among treatments. Enzymatic analyzes revealed no specific changes in C metabolism in the soil, but changes in N metabolism might indicate a direct influence of this nutrient in the potential of the soil to store C.Keywords: climate change, isotope, carbon, nitrogen, pasture, soil respiration, soil enzymes. A maior liberação destes gases influencia diretamente a temperatura média do planeta, uma vez que GEEs como o CO2 absorvem radiação infravermelha, contribuindo assim para o aquecimento do ar e a elevação de temperatura média da Terra em ritmo cada vez mais acelerado (Figura 1B) (Ricklefs, 2003;Towsend et al., 2006;Buckeridge, 2007 considerável parte do C que é recapturado da atmosfera se deve ao processo fotossintético realizado pelos vegetais, principal mecanismo...

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Interpreting the dependence of soil respiration on soil temperature and moisture in an oasis cotton field, central Asia

Cited by 17 publications

References 41 publications

Modelling soil and root respiration in a cotton field using the DNDC model

Modelling soil and root respiration in a cotton field using the DNDC model

Soil respiration and the contribution of root respiration of cotton (Gossypium hirsutum L.) in arid region

Efeitos do aquecimento e da elevada concentração atmosférica de CO2 na dinâmica de carbono e nitrogênio do solo e de duas forrageiras tropicais (Panicum maximum e Stylosanthes capitata).

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