scholarly journals To Identify the Important Soil Properties Affecting Dinoseb Adsorption with Statistical Analysis

2013 ◽  
Vol 2013 ◽  
pp. 1-7 ◽  
Author(s):  
Yiqing Guan ◽  
Jianhui Wei ◽  
Danrong Zhang ◽  
Mingjuan Zu ◽  
Liru Zhang
Keyword(s):  
Organic Carbon ◽  
Soil Organic Carbon ◽  
Correlation Coefficients ◽  
Soil Characteristic ◽  
Soil Factors ◽  
Adsorption Parameter ◽  
Bivariate Correlation ◽  
Set Up ◽  
The Relationship ◽  
Moderate Relationship

Investigating the influences of soil characteristic factors on dinoseb adsorption parameter with different statistical methods would be valuable to explicitly figure out the extent of these influences. The correlation coefficients and the direct, indirect effects of soil characteristic factors on dinoseb adsorption parameter were analyzed through bivariate correlation analysis, and path analysis. With stepwise regression analysis the factors which had little influence on the adsorption parameter were excluded. Results indicate that pH and CEC had moderate relationship and lower direct effect on dinoseb adsorption parameter due to the multicollinearity with other soil factors, and organic carbon and clay contents were found to be the most significant soil factors which affect the dinoseb adsorption process. A regression is thereby set up to explore the relationship between the dinoseb adsorption parameter and the two soil factors: the soil organic carbon and clay contents. A 92% of the variation of dinoseb sorption coefficient could be attributed to the variation of the soil organic carbon and clay contents.

scholarly journals Whole-soil warming alters microbial community, but not concentrations of plant-derived soil organic carbon in subsoil

2021 ◽  
Author(s):  
Cyrill Zosso ◽  
Nicholas O.E. Ofiti ◽  
Jennifer L. Soong ◽  
Emily F. Solly ◽  
Margaret S. Torn ◽  
...  
Keyword(s):  
Climate Change ◽  
Microbial Community ◽  
Organic Carbon ◽  
Soil Organic Carbon ◽  
Soil Depth ◽  
Global Climate ◽  
Plant Litter ◽  
Soil Warming ◽  
Four Seasons ◽  
Set Up

<p>Soils will warm in near synchrony with the air over the whole profiles following global climate change. It is largely unknown how subsoil (below 30 cm) microbial communities will respond to this warming and how plant-derived soil organic carbon (SOC) will be affected. Predictions how climate change will affect the large subsoil carbon pool (>50 % of SOC is below 30 cm soil depth) remain uncertain.</p><p>At Blodgett forest (California, USA) a field warming experiment was set up in 2013 warming whole soil profiles to 100 cm soil depth by +4°C compared to control plots. We took samples in 2018, after 4.5 years of continuous warming and investigated how warming has affected the abundance and community structure of microoganisms (using phospholipid fatty acids, PLFAs), and plant litter (using cutin and suberin).</p><p>The warmed subsoil (below 30 cm) contained significantly less microbial biomass (28%) compared to control plots, whereas the topsoil remained unchanged. Additionally below 50 cm, the microbial community was different in warmed as compared to control plots. Actinobacteria were relatively more abundant and Gram+ bacteria adapted their cell-membrane structure to warming. The decrease in microbial abundance might be related to lower SOC concentrations in warmed compared to control subsoils. In contrast to smaller SOC concentrations and less fine root mass in the warmed plots, the concentrations of the plant polymers suberin and cutin did not change. Overall our results demonstrate that already four seasons of simulated whole-soil warming caused distinct depth-specific responses of soil biogeochemistry: warming altered the subsoil microbial community, but not concentrations of plant-derived soil organic carbon.</p>

scholarly journals The Vertical Differences in the Change Rates and Controlling Factors of Soil Organic Carbon and Total Nitrogen along Vegetation Restoration in a Subtropical Area of China

2020 ◽  
Vol 12 (16) ◽  
pp. 6443
Author(s):  
Zhiwei Cao ◽  
Xi Fang ◽  
Wenhua Xiang ◽  
Pifeng Lei ◽  
Changhui Peng
Keyword(s):  
Organic Carbon ◽  
Soil Organic Carbon ◽  
Total Nitrogen ◽  
Surface Soil ◽  
Lower Layer ◽  
Soil Layer ◽  
Vegetation Restoration ◽  
Soil Factors ◽  
Deep Soil ◽  
Soil Layers

The study was to investigate the change patterns of soil organic carbon (SOC), total nitrogen (TN), and soil C/N (C/N) in each soil sublayer along vegetation restoration in subtropical China. We collected soil samples in four typical plant communities along a restoration chronosequence. The soil physicochemical properties, fine root, and litter biomass were measured. Our results showed the proportion of SOC stocks (Cs) and TN stocks (Ns) in 20–30 and 30–40 cm soil layers increased, whereas that in 0–10 and 10–20 cm soil layers decreased. Different but well-constrained C/N was found among four restoration stages in each soil sublayer. The effect of soil factors was greater on the deep soil than the surface soil, while the effect of vegetation factors was just the opposite. Our study indicated that vegetation restoration promoted the uniform distribution of SOC and TN on the soil profile. The C/N was relatively stable along vegetation restoration in each soil layer. The accumulation of SOC and TN in the surface soil layer was controlled more by vegetation factors, while that in the lower layer was controlled by both vegetation factors and soil factors.

The relationship of soil organic carbon to 210Pbex and 137Cs during surface soil erosion in a hillslope forested environment

Geoderma ◽  
2013 ◽  
Vol 192 ◽  
pp. 59-67 ◽  
Author(s):  
Mengistu T. Teramage ◽  
Yuichi Onda ◽  
Hiroaki Kato ◽  
Yoshifumi Wakiyama ◽  
Shigeru Mizugaki ◽  
...  
Keyword(s):  
Soil Erosion ◽  
Organic Carbon ◽  
Soil Organic Carbon ◽  
Surface Soil ◽  
Relationship Of ◽  
The Relationship

scholarly journals The Relationship between Phosphate Adsorption and Soil Organic Carbon from Organic Matter Addition

2018 ◽  
Vol 15 (1) ◽  
pp. 1 ◽  
Author(s):  
Fadly Hairannoor Yusran
Keyword(s):  
Organic Matter ◽  
Organic Carbon ◽  
Soil Organic Carbon ◽  
Adsorption Capacity ◽  
Organic Amendment ◽  
Phosphate Adsorption ◽  
P Availability ◽  
Lateritic Soils ◽  
The Relationship ◽  
Organic Matter Addition

The Relationship between Phosphate Adsorption and Soil Organic Carbon from Organic Matter Addition (FH Yusran): The application of organic matter (OM) can increase soil phosphorus (P) availability via soil mineralisation. In lateritic soils, however, soluble organic carbon (OC) from OM may also reduce phosphate adsorption capacity, a process that also releases P in soil solution. In these soils, competitive adsorption could be dominant compared to mineralisation. The main objectives of this study were to study phosphate adsorption in three lateritic soils which have been treated with different types and amounts of organic amendment, and had intrinsic OC removed by combustion. The adsorption isotherms showed that OM addition could reduce phosphate adsorption and that this reduction could last up to nine months after application. Lucerne hay was more effective than peat and wheat straw additions in reducing phosphate adsorption capacity. The bicarbonate phosphorus (BP) release through mineralisation occurred despite the increase of phosphate adsorption capacity due to the combustion of soil samples. Peat treatment was predicted to be more effective in creating organo-metal complexes with Al and Fe. Overall, mineralisation from added organic amendment was effective in minimising P adsorption in lateritic soil. 

scholarly journals Carbon stored in forest plantations in The Mariano Dámaso Beraún District, Huánuco – Perú

Yotantsipanko ◽  
2021 ◽  
Vol 1 (1) ◽  
pp. 32-43
Author(s):  
Juan Pablo Rengifo Trigozo ◽  
Luis Eduardo Oré Cierto ◽  
Wendy Caroline Loarte Aliaga ◽  
Juan Daniel Oré Cierto
Keyword(s):  
Organic Carbon ◽  
Soil Organic Carbon ◽  
Carbon Content ◽  
Significant Relationship ◽  
Research Work ◽  
Total Content ◽  
Forest Plantations ◽  
Inga Edulis ◽  
The Relationship ◽  
Established Species

The objective of the research work was to estimate the carbon stored in the forest plantations in the district of Mariano Dámaso Beraún, and for this allometric equations were used, which allowed determining the biomass and this, in turn, the above-ground carbon; Soil organic carbon (COS) was also estimated and the relationship between them was determined. The study was carried out in three 1,5 year old forest plantations, located in the following altitudinal strata: 787 masl (Quesada), 1.153 masl (Chincamayo) and 1.455 masl (Corazón de Jesús), located in the Mariano Dámaso Beraún district. , Leoncio Prado province, Huánuco department. The established species were: Schizolobium amazonicum Huber ex Ducke (spiny pine), Licaria trianda (Swartz) Kostermans (cinnamon moena), Inga edulis C. Martius (guaba), Swietenia macrophylla G. King (mahogany) and Juglans neotropica Diels (walnut); and as a result, the aerial biomass was 2,34 t/ha for the altitude of 787 msnm., 1,77 t/ha for the altitude of 1.153 msnm., and 1,63 t/ha for the altitude of 1.455 msnm.; therefore, the total airborne carbon stored was 1,17 t/ha for the altitude of 787 msnm., 0,89 t/ha for the altitude of 1.153 msnm., and 0,82 t/ha for the altitude of 1.455 msnm.; the total content of organic carbon in the soil was 67,22 t/ha for the altitude of 787 msnm., 68,77 t/ha for the altitude of 1.153 msnm., and 90,09 t/ha for the altitude of 1.455 msnm.; and according to Pearson's correlation, it indicates that there is no statistically significant relationship between the total airborne carbon content with the soil organic carbon in the district under study.

scholarly journals RElationship between Maternal Self-Efficacy and Maternal Feeding Behaviors for Toddlers in Java Island, Indonesia

2017 ◽  
Author(s):  
Ethic Palupi
Keyword(s):  
Self Efficacy ◽  
Nursing Intervention ◽  
Feeding Behaviors ◽  
Health Promoting Behaviors ◽  
Correlational Research ◽  
Bivariate Correlation ◽  
Health Promoting ◽  
Health And Development ◽  
The Relationship ◽  
Moderate Relationship

Background: Appropriate maternal feeding behaviors are well known as a health promoting behavior for toddlers because it can support their health and development. According to Pender’sHealth Promotion Model (2006), self-efficacy can influence the health promoting behaviors. Maternal self-efficacy was the judgment of mothers who have toddlers about their capability to perform appropriate maternal feeding behaviors for their toddlers.Objective:This study was aimed to examine the relationship between maternal self-efficacy and maternal feeding behaviors for toddlers in Java Island, Indonesia.Methods: A descriptive correlational research design was undertaken in January to February 2015. One hundred and ten Indonesian mothers who have toddlers and lived in Java Island were obtained through multistage random sampling. The research instruments included Maternal Feeding Behaviors Questionnaire (MFBQ), Demographic Characteristic Questionnaire, andPerceived Maternal Feeding Behaviors Self-efficacy Questionnaire (FBSeQ). The bivariate correlation analysis was used to examine the relationship between maternal self-efficacy and maternal feeding behaviors.Results:It was found that there was significant positive relationship between maternal self-efficacy and maternal feeding behaviors at .01 levels. The maternal self-efficacy had moderate relationship with maternal feeding behaviors (r = .490, p ≤ .01).Conclusion:A nursing intervention to promote appropriate maternal feeding behaviors should deal with the maternal self-efficacy. Nurses should assist and motivate Indonesian mothers of toddlers for having adequateself-efficacy in order to perform better maternal feeding behaviors.Keyword: maternal feeding behaviors, maternal self-efficacy, toddler.

scholarly journals The effect of community participation on conflict management

2017 ◽  
Vol 7 (2) ◽  
pp. 95-103
Author(s):  
Chanya Apipalakul ◽  
Enkachai Jaimooka, ◽  
Tang Keow Ngang
Keyword(s):  
Conflict Management ◽  
Community Participation ◽  
Community Involvement ◽  
Gold Mining ◽  
Pearson Correlation ◽  
Correlation Coefficients ◽  
Cross Sectional ◽  
Descriptive Research ◽  
The Relationship ◽  
Moderate Relationship

AbstractThis study aimed to investigate the relationship and effect of community participation and conflict management on gold mining resources in Khaochetluk sub-district, Tapkhlo district, Phichit province, Thailand. There were 224 participants derived from a total population of 1,712 who had participated in this study. Researchers employed cross-sectional descriptive research design utilizing questionnaire as an instrument to collect data. This instrument has been piloted and found to be validated after checking by three experts and reliable with high value of Cronbach’s alpha coefficient. The obtained data was analyzed not only using descriptive statistics such as percentage, mean score, standard deviation but also inferential statisticssuch as Pearson product moment correlation, stepwise multiple linear regression. Findings of the study indicated that both variables namely community participation as well as conflict management were at moderate level. Additionally, Pearson correlation coefficients revealed that community participation had significant, positive, and moderate relationship with conflict management (r = 0.456) at the significant level of 0.01. Consequently, result of this study revealed that there were two significant predictors toward conflict management. These two significant predictors were ‘involvement’ and‘empowerment’ components of community involvement which have successfully contributed 20.1 percent variance of conflict management at 0.01 significant level. Qualitative findings indicated that an establishment of platform to provideopportunities for community participation. An appointed committee needs for monitoring purposes. This study is able to promote the importance of community participation in conflict management. Keywords: Community participation, conflict management, gold mining resources.

scholarly journals Soil organic carbon stocks in tropical soil systems under rainforests controlled by geochemistry

2020 ◽  
Author(s):  
Mario Reichenbach ◽  
Peter Fiener ◽  
Florian Wilken ◽  
Johan Six ◽  
Laurent Kidinda ◽  
...  
Keyword(s):  
Organic Carbon ◽  
Soil Organic Carbon ◽  
Tropical Forest ◽  
Carbon Stocks ◽  
Parent Material ◽  
Temperate Climate ◽  
Soil C ◽  
Geochemical Properties ◽  
The Relationship ◽  
Soc Stocks

<p>Soil mineralogy plays an important role in stabilizing soil organic carbon (SOC) against decomposition by forming organo-mineral complexes with reactive mineral surfaces. However, few studies take the influence of parent material geochemistry on the development of C stabilization mechanisms into account. In addition, studies evaluating C stabilization in soil are often limited to temperate climate zones with young to intermediate aged soils. This is not representative for older, deeply weathered and leached tropical systems and limits our understanding of the relationship between geology, soil formation and their effect on C stabilization.</p><p>Here, we study the relationship between soil carbon stabilization and the geochemical properties of soils developed on different parent material along geomorphic transects in pristine tropical forest systems under comparable climate. Our study is located in the eastern part of the Congo basin along the East African Rift Mountain System where we sampled 36 one meter soil cores along nine geomorphic transects on geologies ranging from mafic to felsic geochemistry.</p><p>Carbon stocks ranged between 2.67 tC ha<sup>-1</sup> to 85.75 tC ha<sup>-1</sup> and were on average composed of 4.5% (±5.3% SD) coarse particulate organic matter, 46.0% (±10.3% SD) (micro)aggregates associated C and 49.6% (±11.2% SD) free silt and clay associated C. Our analysis shows that the topographic position of the investigated soils had no effect on SOC stocks and the distribution of soil C fractions. Regression models and partial correlation analysis reveal that strong correlations of SOC stocks exists to geochemical properties of the solid phase of soil but not to the distribution of soil C fractions. SOC decreased strongly with soil depth on soils developed on felsic parent material, but less so on mafic or intermediate parent material. In addition, mafic geochemistry shows significantly higher SOC stocks compared to their felsic counterparts.</p><p>We conclude that despite long-lasting weathering, the contrasting geochemistry of the underlying parent material leaves a footprint in soil geochemistry that affects C stocks but less so on stabilization mechanisms. We hypothesis that carbon dynamics in these undisturbed tropical forest systems are more driven by C input and nutrient recycling than by variation in C stabilization potential.  </p>

The Relationship between Carbon Input, Aggregation, and Soil Organic Carbon Stabilization in Sustainable Cropping Systems

2005 ◽  
Vol 69 (4) ◽  
pp. 1078-1085 ◽  
Author(s):  
Angela Y. Y. Kong ◽  
Johan Six ◽  
Dennis C. Bryant ◽  
R. Ford Denison ◽  
Chris van Kessel
Keyword(s):  
Organic Carbon ◽  
Soil Organic Carbon ◽  
Cropping Systems ◽  
Carbon Stabilization ◽  
The Relationship
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