scholarly journals The Linkage of Soil CO2 Emissions in a Moso Bamboo (Phyllostachysedulis (Carriere) J. Houzeau) Plantation with Aboveground and Belowground Stoichiometry

Forests ◽  
2021 ◽  
Vol 12 (8) ◽  
pp. 1052
Author(s):  
Xiaokun Tian ◽  
Xiaogai Ge ◽  
Benzhi Zhou ◽  
Maihe Li
Keyword(s):  
Soil Respiration ◽  
Co2 Emissions ◽  
Respiration Rate ◽  
Forest Growth ◽  
Moso Bamboo ◽  
Mediating Effect ◽  
Soil Co2 ◽  
Soil Respiration Rate ◽  
Soil Stoichiometry ◽  
Soil Co2 Emissions

Understanding the effects of soil stoichiometry and nutrient resorption on soil CO2 emissions is critical for predicting forest ecosystem nutritional demands and limitations tooptimal forest growth. In this study, we examined the effects of above- and belowground stoichiometry on soil CO2 emissions and their mediating effect on soil respiration in subtropical moso bamboo (Phyllostachys edulis) plantations. Our results showed that the soil respiration rate did not differ significantly among four bamboo stands. Nitrogen (N) and phosphorous (P) concentrations were higher in bamboo leaves than litter, whereas the C:N and C:P ratios showed the opposite trend. Significant positive correlations of soil cumulative CO2 emission with litter C:P (p = 0.012) and N:P (p = 0.041) ratios indicated that litter stoichiometry was a better predictor of soil respiration than aboveground stoichiometry. Cumulative soil CO2 emissions were significantly negatively correlated with soil microbe C:N (p = 0.021) and C:N (p = 0.036) ratios, and with soil respiratory quotients (p < 0.001). These results suggest that litter and soil stoichiometry are reliable indicators of the soil respiration rate. This study provides important information about the effects of ecosystem stoichiometry and soil microbial biomass on soil CO2 emissions and highlights them editing role of soil nutritional demands and limitations in the association between soil respiration rates and aboveground plant tissues.

scholarly journals SOIL RESPIRATION IN STANDS OF DIFFERENT TREE SPECIES

2018 ◽  
Author(s):  
Jurgita SASNAUSKIENĖ ◽  
Nomeda SABIENĖ ◽  
Vitas MAROZAS ◽  
Laima ČESONIENĖ ◽  
Kristina LINGYTĖ
Keyword(s):  
Electrical Conductivity ◽  
Soil Respiration ◽  
Soil Temperature ◽  
Co2 Emissions ◽  
Respiration Rate ◽  
Tree Species ◽  
Soil Samples ◽  
Herbaceous Vegetation ◽  
Thuja Occidentalis ◽  
Soil Respiration Rate

Forest ecosystems of different tree species participate actively in climatic and biotic processes, such as photosynthesis, plant and soil respiration, therefore knowledge of soil respiration, especially of CO2 emissions to the atmosphere is of great importance. The aim of the study was to determine soil respiration rate of stands of deciduous (Betula pubescens Ehrh., Quercus robur L.) and coniferous (Larix eurolepis Henry, Thuja occidentalis L.) tree species as well as impact of abiotic (soil temperature, humidity, electrical conductivity, pH) and biotic (abundance of undergrowth, shrub, herbs) factors. Measurements of CO2 emissions, temperature, moisture and electrical conductivity were performed in-situ in the stands of different tree species with portable ADC BioScientific LCpro+ system and digital electrochemical device “Wet” (Delta-T). Soil samples were collected for the physicochemical analysis simultaneously. Chemical analysis of soil samples was done at the lab of the Environmental Research of the Aleksandras Stulginskis University by standard methods. Soil respiration was highest in the stand of Thuja occidentalis and lowest in the stand of Betula pubescens. Soil respiration intensity of the tree stands increased as follow: Thuja˂ Quercus˂ Larix˂ Betula. In the coniferous tree stands, the soil respiration was lower on average 27% comparing to deciduous tree stands. Soil respiration rate increased with increase of herbaceous vegetation cover and temperature. Soil respiration rate was mostly influenced by abundance of herbaceous vegetation (r = 0.91) of all biotic factors investigated, while soil temperature (r = 0.75) of abiotic factors. 60 years old stands of different tree species formed specific conditions what influenced different soil respiration rates.

Physical protection of soil carbon in macroaggregates does not reduce the temperature dependence of soil CO2 emissions

2015 ◽  
Vol 178 (4) ◽  
pp. 592-600 ◽  
Author(s):  
Tiphaine Chevallier ◽  
Kaouther Hmaidi ◽  
Ernest Kouakoua ◽  
Martial Bernoux ◽  
Tahar Gallali ◽  
...  
Keyword(s):  
Temperature Dependence ◽  
Soil Carbon ◽  
Co2 Emissions ◽  
Soil Co2 ◽  
Physical Protection ◽  
Soil Co2 Emissions

Ecological responses of Stipa steppe in Inner Mongolia to experimentally increased temperature and precipitation. 3. Soil respiration

2018 ◽  
Vol 40 (2) ◽  
pp. 153 ◽  
Author(s):  
Xuexia Wang ◽  
Yali Chen ◽  
Yulong Yan ◽  
Zhiqiang Wan ◽  
Ran Chao ◽  
...  
Keyword(s):  
Soil Moisture ◽  
Soil Respiration ◽  
Soil Temperature ◽  
Respiration Rate ◽  
Inner Mongolia ◽  
Growing Season ◽  
Climatic Warming ◽  
Soil Respiration Rate ◽  
Natural Rainfall ◽  
Temperature And Precipitation

The response of soil respiration to simulated climatic warming and increased precipitation was evaluated on the arid–semi-arid Stipa steppe of Inner Mongolia. Soil respiration rate had a single peak during the growing season, reaching a maximum in July under all treatments. Soil temperature, soil moisture and their interaction influenced the soil respiration rate. Relative to the control, warming alone reduced the soil respiration rate by 15.6 ± 7.0%, whereas increased precipitation alone increased the soil respiration rate by 52.6 ± 42.1%. The combination of warming and increased precipitation increased the soil respiration rate by 22.4 ± 11.2%. When temperature was increased, soil respiration rate was more sensitive to soil moisture than to soil temperature, although the reverse applied when precipitation was increased. Under the experimental precipitation (20% above natural rainfall) applied in the experiment, soil moisture was the primary factor limiting soil respiration, but soil temperature may become limiting under higher soil moisture levels.

scholarly journals Soil CO2 Emissions as Affected by 20-Year Continuous Cropping in Mollisols

2014 ◽  
Vol 13 (3) ◽  
pp. 615-623 ◽  
Author(s):  
Meng-yang YOU ◽  
Ya-ru YUAN ◽  
Lu-jun LI ◽  
Yan-li XU ◽  
Xiao-zeng HAN
Keyword(s):  
Co2 Emissions ◽  
Continuous Cropping ◽  
Soil Co2 ◽  
Soil Co2 Emissions

scholarly journals CO2 Flux and C Balance due to the Replacement of Bare Soil with Agro-Ecological Service Crops in Mediterranean Environment

Agriculture ◽  
2019 ◽  
Vol 9 (4) ◽  
pp. 71 ◽  
Author(s):  
Emanuele Radicetti ◽  
O. Osipitan ◽  
Ali Langeroodi ◽  
Sara Marinari ◽  
Roberto Mancinelli
Keyword(s):  
Organic Matter ◽  
Co2 Emissions ◽  
Oilseed Rape ◽  
Soil Characteristics ◽  
Cold Period ◽  
Soil Co2 ◽  
Mediterranean Environment ◽  
Hairy Vetch ◽  
Ecological Service ◽  
Soil Co2 Emissions

Intensive agriculture practices often results in decomposition of organic matter, thus causing soil CO2 emissions. Agro-ecological service crop could be profitably cultivated to improve soil characteristics and reduce CO2 emissions under Mediterranean environment. Two-year field trials were conducted in central Italy. The treatments were three agro-ecological service crops (hairy vetch, oat, and oilseed rape) and a no-service cover. Plant development, soil characteristics, and CO2 emissions were measured. Oat and oilseed rape showed a rapid growth, while hairy vetch started to grow rapidly only after the cold period. Soil CO2 emissions trend was similar among the agro-ecological service crops and tended to decrease during the cold period, then gradually increased until April when warm temperatures were observed. The high soil CO2 emissions and respiration index observed in hairy vetch probably stimulated mineral nutrients, especially nitrogen, to become more available in the soil compared to oat and oilseed rape throughout the decomposition of soil organic matter. These results confirmed that the cultivation of agro-ecological service crops, especially hairy vetch, could represent a suitable strategy for enhancing carbon sequestration and lead to a mitigation of CO2 emissions during the fallow period and could thus contribute to the climate change mitigation.

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