scholarly journals VARIABILIDADE ESPACIAL DO FLUXO DE CO2 DO SOLO EM POVOAMENTO DE EUCALIPTO

FLORESTA ◽  
2011 ◽  
Vol 41 (2) ◽  
Author(s):  
Alexandre Fonseca D’Andréa ◽  
Marx Leandro Naves Silva ◽  
Diego Antonio França de Freitas ◽  
Nilton Curi ◽  
Carlos Alberto Silva
Keyword(s):  
Organic Matter ◽  
Environmental Factors ◽  
Organic Carbon ◽  
Spatial Variability ◽  
Linear Correlation ◽  
Microbial Biomass Carbon ◽  
Co2 Flux ◽  
Water Evaporation ◽  
Soil Co2 ◽  
Soil Co2 Flux

A matéria orgânica do solo armazena a maior parte do carbono contido nos sistemas terrestres do planeta, sendo a maioria encontrada nos solos com floresta. O objetivo deste trabalho foi quantificar o fluxo de CO2 do solo e a sua variabilidade espacial em povoamento de Eucalyptus sp. Foram avaliados o fluxo de CO2 do solo, fatores ambientais (evaporação de água, temperatura e umidade do solo), atributos relacionados à fertilidade (pH, soma de bases e alumínio trocável), estrutura (densidade do solo e porosidade total) e matéria orgânica do solo (carbono orgânico total e carbono da biomassa microbiana). Análises de correlação linear simples indicaram que parte da variabilidade espacial do fluxo de CO2 do solo pode ser explicada pelo efeito conjunto do teor de carbono orgânico do solo, da biomassa da serapilheira e da presença de árvores no terreno, indicativas da participação de fatores bióticos no processo. No entanto, o fluxo de CO2 do solo é um fenômeno de natureza complexa, não sendo possível identificar um único atributo do solo ou do ambiente que, isoladamente, explique sua variação no espaço.Palavras-chave: Matéria orgânica; fatores ambientais; fertilidade; carbono; respiração do solo.AbstractSoil CO2 flux spatial variability on eucalyptus manmade forest.  The organic matter on soil retains most of carbon contained in the planet terrestrial systems, specially in forest soils. The aim of this work was to quantify soil CO2 flux and its spatial variability on Eucalyptus sp. manmade forest. In order to that, soil CO2 flux, environmental factors (water evaporation, soil temperature and moisture), fertility attributes (pH, bases sum and exchangeable aluminum), structure (bulk density and total porosity), and soil organic matter (total organic carbon and microbial biomass carbon) were evaluated. Simple linear correlation analyses indicated that part of the spatial variability of soil CO2 flux can be explained by the associated effect of soil organic carbon amount, litter biomass and presence of trees, indicatives of participation of biotic factors in the process. However, the soil CO2 flux is a complex phenomenon, been impossible to identify a single soil or environmental attribute, which, individually, could explain its spatial variability. Keywords: Organic matter; environmental factors; fertility; carbon; linear correlation. 

Small-scale spatial variability of soil CO2 flux: Implication for monitoring strategy

2018 ◽  
Vol 366 ◽  
pp. 13-26 ◽  
Author(s):  
G. Boudoire ◽  
A. Finizola ◽  
A. Di Muro ◽  
A. Peltier ◽  
M. Liuzzo ◽  
...  
Keyword(s):  
Spatial Variability ◽  
Co2 Flux ◽  
Small Scale ◽  
Monitoring Strategy ◽  
Soil Co2 ◽  
Soil Co2 Flux

Soil organic carbon storage and soil CO2 flux in the alpine meadow ecosystem

2007 ◽  
Vol 50 (7) ◽  
pp. 1103-1114 ◽  
Author(s):  
Zhen Tao ◽  
ChengDe Shen ◽  
QuanZhou Gao ◽  
YanMin Sun ◽  
WeiXi Yi ◽  
...  
Keyword(s):  
Organic Carbon ◽  
Soil Organic Carbon ◽  
Carbon Storage ◽  
Alpine Meadow ◽  
Co2 Flux ◽  
Soil Co2 ◽  
Soil Co2 Flux ◽  
Soil Organic Carbon Storage ◽  
Organic Carbon Storage

scholarly journals Effects of inorganic and organic fertilizers on CO2 and CH4 fluxes from tea plantation soil

Elem Sci Anth ◽  
2021 ◽  
Vol 9 (1) ◽  
Author(s):  
Shan Lin ◽  
Shangpeng Zhang ◽  
Guoting Shen ◽  
Muhammad Shaaban ◽  
Wenliang Ju ◽  
...  
Keyword(s):  
Nitrogen Content ◽  
Co2 Emissions ◽  
Oilseed Rape ◽  
Structural Equation Models ◽  
Microbial Biomass Carbon ◽  
Co2 Flux ◽  
Organic Fertilizers ◽  
Soil Co2 ◽  
Soil Co2 Flux ◽  
Tea Soil

Agricultural practices such as fertilization considerably influence soil greenhouse gas fluxes. However, the effects of fertilization on greenhouse gases fluxes remain unclear in tea soil when soil nitrogen is low. In the present study, soil CO2 and CH4 fluxes under various fertilization treatments in tea soil were investigated during a 50-day period. The experiment consisted of five treatments: no fertilizer (CK), single nitrogen (urea, N), single oilseed rape cake fertilizer (R), nitrogen + cake fertilizer (2:1, NR1), and nitrogen + cake fertilizer (1:2, NR2). The fertilization proportion of NR1 and NR2 was determined by the nitrogen content of nitrogen fertilizer and cake fertilizer. The results revealed that the single application of nitrogen had no significant effect on soil CO2 flux. However, the addition of cake fertilizer significantly increased CO2 emissions through enhanced soil microbial biomass carbon (MBC). Additionally, CO2 emissions were directly proportional to the amount of carbon (C) in the fertilizer. All treatments were minor sinks for CH4 except for the treatment NR1. Specifically, the cumulative CH4 fluxes of NR1 and NR2 were significantly higher than rest of the three treatments, which implies that application of urea and oilseed rape cake reduced the capability of CH4 oxidation in tea soil. Structural equation models indicated that soil CO2 flux is significantly and positively correlated with soil dissolved organic carbon, MBC and soil pH, while mineral nitrogen content was the main factor affecting CH4 flux. Overall, the application of oilseed rape cake increased the oxidation of CH4 and promoted soil C sequestration but inevitably increased the soil CO2 emissions.

scholarly journals A Threshold Line for Safe Geologic CO2 Storage Based on Field Measurement of Soil CO2 Flux

2021 ◽  
Vol 7 (2) ◽  
pp. 34
Author(s):  
Takashi Kuriyama ◽  
Phung Quoc Huy ◽  
Salmawati Salmawati ◽  
Kyuro Sasaki
Keyword(s):  
Environmental Factors ◽  
Gas Permeability ◽  
Co2 Storage ◽  
Co2 Flux ◽  
Test Field ◽  
Co2 Leakage ◽  
Soil Co2 ◽  
Soil Co2 Flux ◽  
Soil Accumulation ◽  
Threshold Line

Carbon capture and storage (CCS) is an established and verified technology that can implement zero emissions on a large enough scale to limit temperature rise to below 2 °C, as stipulated in the Paris Agreement. However, leakage from CCS sites must be monitored to ensure containment performance. Surface monitoring of carbon dioxide (CO2) concentrations at onshore CCS sites is one method to locate and quantify CCS site leakage. Employing soil accumulation chambers, we have established baseline data for the natural flux of CO2 as a threshold alert to detect CO2 leakage flux to ensure the safety of onshore CCS sites. Within this context, we conducted on-site CO2 measurements at three different locations (A, B, and C) on the INAS test field at the Ito campus, Kyushu University (Japan). Furthermore, we developed a specific measurement system based on the closed-chamber method to continuously measure CO2 flux from soil and to investigate the correlation between CO2 flux from the soil surface and various parameters, including environmental factors and soil sample characteristics. In addition, gas permeability and the effect of different locations on soil CO2 flux are discussed in this study. Finally, we present an equation for estimating the soil CO2 flux used in the INAS field site that includes environmental factors and soil characteristics. This equation assists in defining the threshold line for an alert condition related to CO2 leakage at onshore CCS sites.

scholarly journals Microbiological properties and oxidizable organic carbon fractions of an oxisol under coffee with split phosphorus applications and irrigation regimes

2013 ◽  
Vol 37 (1) ◽  
pp. 55-65 ◽  
Author(s):  
Adriana Rodolfo da Costa ◽  
Juliana Hiromi Sato ◽  
Maria Lucrécia Gerosa Ramos ◽  
Cícero Célio de Figueiredo ◽  
Géssica Pereira de Souza ◽  
...  
Keyword(s):  
Organic Matter ◽  
Acid Phosphatase ◽  
Soil Organic Matter ◽  
Organic Carbon ◽  
Microbial Biomass Carbon ◽  
Block Design ◽  
Phosphorus Fertilization ◽  
Carbon Fractions ◽  
Irrigation Regimes ◽  
Organic Carbon Fractions

Phosphorus fertilization and irrigation increase coffee production, but little is known about the effect of these practices on soil organic matter and soil microbiota in the Cerrado. The objective of this study was to evaluate the microbiological and oxidizable organic carbon fractions of a dystrophic Red Latossol under coffee and split phosphorus (P) applications and different irrigation regimes. The experiment was arranged in a randomized block design in a 3 x 2 factorial design with three split P applications (P1: 300 kg ha-1 P2O5, recommended for the crop year, of which two thirds were applied in September and the third part in December; P2: 600 kg ha-1 P2O5, applied at planting and then every two years, and P3: 1,800 kg ha-1 P2O5, the requirement for six years, applied at once at planting), two irrigation regimes (rainfed and year-round irrigation), with three replications. The layers 0-5 and 5-10 cm were sampled to determine microbial biomass carbon (MBC), basal respiration (BR), enzyme activity of acid phosphatase, the oxidizable organic carbon fractions (F1, F2, F3, and F4), and total organic carbon (TOC). The irrigation regimes increased the levels of MBC, microbial activity and acid phosphatase, TOC and oxidizable fractions of soil organic matter under coffee. In general, the form of dividing P had little influence on the soil microbial properties and OC. Only P3 under irrigation increased the levels of MBC and acid phosphatase activity.

scholarly journals Spatial and Temporal Variability of Soil CO2 Flux in Sugarcane Green Harvest Systems

2016 ◽  
Vol 40 (0) ◽  
Author(s):  
Rose Luiza Moraes Tavares ◽  
Zigomar Menezes de Souza ◽  
Newton La Scala Jr ◽  
Guilherme Adalberto Ferreira Castioni ◽  
Gustavo Soares de Souza ◽  
...  
Keyword(s):  
Temporal Variability ◽  
Co2 Flux ◽  
Spatial And Temporal Variability ◽  
Soil Co2 ◽  
Soil Co2 Flux

scholarly journals Comparative soil CO2 flux measurements and geostatistical estimation methods on Masaya volcano, Nicaragua

2005 ◽  
Vol 68 (1) ◽  
pp. 76-90 ◽  
Author(s):  
Jennifer L. Lewicki ◽  
Deborah Bergfeld ◽  
Carlo Cardellini ◽  
Giovanni Chiodini ◽  
Domenico Granieri ◽  
...  
Keyword(s):  
Co2 Flux ◽  
Estimation Methods ◽  
Soil Co2 ◽  
Soil Co2 Flux ◽  
Masaya Volcano ◽  
Geostatistical Estimation ◽  
Flux Measurements

Biocrust contribution to soil CO2 flux in desert shrubland ecosystem of northwest Mexico

2021 ◽  
pp. 1-17
Author(s):  
Fernando Ayala-Niño ◽  
Yolanda Maya-Delgado ◽  
Enrique Troyo-Diéguez ◽  
Pedro P. Garcillán
Keyword(s):  
Co2 Flux ◽  
Soil Co2 ◽  
Soil Co2 Flux ◽  
Northwest Mexico ◽  
Desert Shrubland
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