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Articles 1 - 30 of 31
Full-Text Articles in Soil Science
A Survey On Subsurface Signal Propagation, Usman Raza, Abdul Salam
A Survey On Subsurface Signal Propagation, Usman Raza, Abdul Salam
Faculty Publications
Wireless Underground Communication (WUC) is an emerging field that is being developed continuously. It provides secure mechanism of deploying nodes underground which shields them from any outside temperament or harsh weather conditions. This paper works towards introducing WUC and give a detail overview of WUC. It discusses system architecture of WUC along with the anatomy of the underground sensor motes deployed in WUC systems. It also compares Over-the-Air and Underground and highlights the major differences between the both type of channels. Since, UG communication is an evolving field, this paper also presents the evolution of the field along with the …
Carbon Dynamic In The Decomposer Subsystem Of The Leymus Chinensis Grassland In Northeastern China, Yong Wang, Jixun Guo
Carbon Dynamic In The Decomposer Subsystem Of The Leymus Chinensis Grassland In Northeastern China, Yong Wang, Jixun Guo
IGC Proceedings (1997-2023)
No abstract provided.
Effects Of Orchard Green Cover On Accumulation And Emission Of Soil Organic Carbon, Y. X. Wang, Boqi Weng, Z. D. Wu, Yibin Huang, Z. D. Zheng
Effects Of Orchard Green Cover On Accumulation And Emission Of Soil Organic Carbon, Y. X. Wang, Boqi Weng, Z. D. Wu, Yibin Huang, Z. D. Zheng
IGC Proceedings (1997-2023)
No abstract provided.
Effects Of Fence On Daily Variation Of Co2 Flux From The Soil In Subalpine Meadow Of Xinjiang, Ping'an Jiang
Effects Of Fence On Daily Variation Of Co2 Flux From The Soil In Subalpine Meadow Of Xinjiang, Ping'an Jiang
IGC Proceedings (1997-2023)
No abstract provided.
The Surface Water And Soil Quality By The Year‐Long Staying Management In Jeseniky Region, Marie Svozilova, J. Rzonca, P. Varekova
The Surface Water And Soil Quality By The Year‐Long Staying Management In Jeseniky Region, Marie Svozilova, J. Rzonca, P. Varekova
IGC Proceedings (1997-2023)
No abstract provided.
Assessment Of Soil Properties Under Different Land Use Types In Olokemeji Forest Reserves In Ogun State Southwestern Nigeria, Oluwatoyin Opeyemi Akintola, Adewunmi Idayat Bodede, Michael Smart, Ayodeji Gideon Adebayo, Olawale Nurean Sulaiman
Assessment Of Soil Properties Under Different Land Use Types In Olokemeji Forest Reserves In Ogun State Southwestern Nigeria, Oluwatoyin Opeyemi Akintola, Adewunmi Idayat Bodede, Michael Smart, Ayodeji Gideon Adebayo, Olawale Nurean Sulaiman
Journal of Bioresource Management
Knowledge of soil properties is essential for environmental sustainability for any forest reserve or plantation. The physical and chemical properties of soil under three different land uses was investigated to assess the nutrient and fertility status of the soils. Fifteen soil samples, each collected from different locations within the natural forest, plantation and farm land were analyzed for soil texture, bulk density, porosity, pH, organic carbon, organic matter content, total nitrogen, available phosphorus, Na, K, Ca, Mg, Zn, Cu, Fe and Mn. Texturally, the soils were loamy, loamy sand and sandy loamy in the natural forest, plantation and farmland respectively. …
Decision Agriculture, Abdul Salam, Usman Raza
Decision Agriculture, Abdul Salam, Usman Raza
Faculty Publications
In this chapter, the latest developments in the field of decision agriculture are discussed. The practice of management zones in digital agriculture is described for efficient and smart faming. Accordingly, the methodology for delineating management zones is presented. Modeling of decision support systems is explained along with discussion of the issues and challenges in this area. Moreover, the precision agriculture technology is also considered. Moreover, the chapter surveys the state of the decision agriculture technologies in the countries such as Bulgaria, Denmark, France, Israel, Malaysia, Pakistan, United Kingdom, Ukraine, and Sweden. Finally, different field factors such as GPS accuracy and …
Electromagnetic Characteristics Of The Soil, Abdul Salam, Usman Raza
Electromagnetic Characteristics Of The Soil, Abdul Salam, Usman Raza
Faculty Publications
The electromagnetic characteristics of the soil are discussed in this chapter. The characteristics of porous bedrock, soil medium, and impacts of rain attenuations are also presented. The models of dielectric soil properties are studied with a rigorous focus on the constitutive parameters of subsurface soil medium. Moreover, the permittivity and wavenumber in soil are explained. In addition, the frequency-dependent dielectric properties such as dispersion in soil, absorption characteristic, and penetration depth versus frequency are reviewed. Furthermore, the effective permittivity of soil–water mixture for through-the soil-propagation mechanism is analyzed thoroughly.
Underground Phased Arrays And Beamforming Applications, Abdul Salam, Usman Raza
Underground Phased Arrays And Beamforming Applications, Abdul Salam, Usman Raza
Faculty Publications
This chapter presents a framework for adaptive beamforming in underground communication. The wireless propagation is thoroughly analyzed to develop a model using the soil moisture as an input parameter to provide feedback mechanism while enhancing the system performance. The working of array element in the soil is analyzed. Moreover, the effect of soil texture and soil moisture on the resonant frequency and return loss is studied in detail. The wave refraction from the soil–air interface highly degrades the performance of the system. Furthermore, to beam steering is done to achieve high gain for lateral component improving the UG communication. The …
Signals In The Soil: Underground Antennas, Abdul Salam, Usman Raza
Signals In The Soil: Underground Antennas, Abdul Salam, Usman Raza
Faculty Publications
Antenna is a major design component of Internet of Underground Things (IOUT) communication system. The use of antenna, in IOUT, differs from traditional communication in that it is buried in the soil. Therefore, one of the main challenges, in IOUT applications, is to establish a reliable communication. To that end, there is a need of designing an underground-specific antenna. Three major factors that can impact the performance of a buried antenna are: (1) effect of high soil permittivity changes the wavelength of EM waves, (2) variations in soil moisture with time affecting the permittivity of the soil, and (3) difference …
Soil Moisture And Permittivity Estimation, Abdul Salam, Usman Raza
Soil Moisture And Permittivity Estimation, Abdul Salam, Usman Raza
Faculty Publications
The soil moisture and permittivity estimation is vital for the success of the variable rate approaches in the field of the decision agriculture. In this chapter, the development of a novel permittivity estimation and soil moisture sensing approach is presented. The empirical setup and experimental methodology for the power delay measurements used in model are introduced. Moreover, the performance analysis is explained that includes the model validation and error analysis. The transfer functions are reported as well for soil moisture and permittivity estimation. Furthermore, the potential applications of the developed approach in different disciplines are also examined.
Current Advances In Internet Of Underground Things, Abdul Salam, Usman Raza
Current Advances In Internet Of Underground Things, Abdul Salam, Usman Raza
Faculty Publications
The latest developments in Internet of Underground Things are covered in this chapter. First, the IOUT Architecture is discussed followed by the explanation of the challenges being faced in this paradigm. Moreover, a comprehensive coverage of the different IOUT components is presented that includes communications, sensing, and system integration with the cloud. An in-depth coverage of the applications of the IOUT in various disciplines is also surveyed. These applications include areas such as decision agriculture, pipeline monitoring, border control, and oil wells.
Signals In The Soil: Subsurface Sensing, Abdul Salam, Usman Raza
Signals In The Soil: Subsurface Sensing, Abdul Salam, Usman Raza
Faculty Publications
In this chapter, novel subsurface soil sensing approaches are presented for monitoring and real-time decision support system applications. The methods, materials, and operational feasibility aspects of soil sensors are explored. The soil sensing techniques covered in this chapter include aerial sensing, in-situ, proximal sensing, and remote sensing. The underlying mechanism used for sensing is also examined as well. The sensor selection and calibration techniques are described in detail. The chapter concludes with discussion of soil sensing challenges.
Autonomous Irrigation Management In Decision Agriculture, Abdul Salam, Usman Raza
Autonomous Irrigation Management In Decision Agriculture, Abdul Salam, Usman Raza
Faculty Publications
In this chapter, the important application of autonomous irrigation management in the field decision agriculture is discussed. The different types of sensor-guided irrigation systems are presented that includes center pivot systems and drip irrigation systems. Their sensing and actuator components are with detailed focus on real-time decision-making and integration to the cloud. This chapter also presents irrigation control systems which takes, as an input, soil moisture and temperature from IOUT and weather data from Internet and communicate with center pivot based irrigation systems. Moreover, the system architecture is explored where development of the nodes including sensing and actuators is presented. …
Variable Rate Applications In Decision Agriculture, Abdul Salam, Usman Raza
Variable Rate Applications In Decision Agriculture, Abdul Salam, Usman Raza
Faculty Publications
In this chapter, the variable rate applications (VRA) are presented for the field of decision agriculture. The characteristics of VRA control systems are described along with control hardware. Different types of VRA systems are discussed (e.g., liquid VRA systems and dry VRA systems). A case study is also explored in this regard. Moreover, recent advances and future trends are also outlined. Accordingly, a sustainable variable-rate irrigation scheduling is studied where different hardware and software component of the cyber-physical system are considered. Finally, chapter is concluded with a novel sensor deployment methodology.
The Post-Wildfire Impact Of Burn Severity And Age On Black Carbon Snow Deposition And Implications For Snow Water Resources, Cascade Range, Washington, Ted M. Uecker, Susan D. Kaspari, Keith N. Musselman, S. Mckenzie Skiles
The Post-Wildfire Impact Of Burn Severity And Age On Black Carbon Snow Deposition And Implications For Snow Water Resources, Cascade Range, Washington, Ted M. Uecker, Susan D. Kaspari, Keith N. Musselman, S. Mckenzie Skiles
Geological Sciences Faculty Scholarship
Wildfires in the snow zone affect ablation by removing forest canopy, which enhances surface solar irradiance, and depositing light absorbing particles [LAPs, such as black carbon (BC)] on the snowpack, reducing snow albedo. How variations in BC deposition affects post-wildfire snowmelt timing is poorly known and highly relevant to water resources. We present a field-based analysis of BC variability across five sites of varying burn age and burn severity in the Cascade Range, Washington State, United States. Single particle soot photometer (SP2) analyses of BC snow concentrations were used to assess the impact of BC on snow albedo, and radiative …
Effect Of Plant Derived Tannins On Nitrogen And Carbon Cycling In Pasture Soils, Kathryn A. Slebodnik
Effect Of Plant Derived Tannins On Nitrogen And Carbon Cycling In Pasture Soils, Kathryn A. Slebodnik
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Pasture-finished beef has become increasingly popular, but nitrogen losses from these pastures are of concern. Legumes containing condensed tannins such as birdsfoot trefoil (Lotus corniculatus) and sainfoin (Onobrychis viciifolia) may serve as environmentally and economically viable alternative forages in pasture finishing systems while reducing soil nitrogen loss. The goal of this project was to understand how tannin type and concentration affects soil nitrogen cycling both in the lab and the field. This thesis: 1) compared the physical, chemical, and biological characteristics of soil samples obtained from grazed grass and tannin and non-tannin containing legume pastures, 2) …
Study Of Environmental Factors Effects On Vegetation, Case Study: Iran, A. Tavili
Study Of Environmental Factors Effects On Vegetation, Case Study: Iran, A. Tavili
IGC Proceedings (1997-2023)
No abstract provided.
Soil Factors Affecting The Distribution Of Four Salt Tolerant Range Plants In Eastern Azarbaijane Province (Gharakhlar), A. Mokhtari Asal, Sh. Rastegar, S. Kh. Mahdavi, M. R. Sadeghimanesh
Soil Factors Affecting The Distribution Of Four Salt Tolerant Range Plants In Eastern Azarbaijane Province (Gharakhlar), A. Mokhtari Asal, Sh. Rastegar, S. Kh. Mahdavi, M. R. Sadeghimanesh
IGC Proceedings (1997-2023)
No abstract provided.
Non-Toxic Soil Thickeners For Reducing Mudslide Intensity, Mitchell William Jensen
Non-Toxic Soil Thickeners For Reducing Mudslide Intensity, Mitchell William Jensen
Materials Engineering
This project was intended to be a continuation of senior project work done last year by a group consisting of two Materials Engineering students and a Soil Science student. Their report was crucial in identifying a range of food thickeners that could be capable of performing in the mud thickening application. All thickeners that were chosen both this year and last year are biocompatible, to alleviate some toxicity concerns. The food thickeners all belong to a class of compounds known as colloids. Since water is the fluid being thickened, these compounds are more accurately referred to as hydrocolloids. Hydrocolloids are …
Physical And Chemical Properties Of Soils In Gambari Forest Reserve Near Ibadan, South Western Nigeria., Akintola O. Opeyemi Dr, Bodede Idayat Adewunmi Dr, Abiola Isaac Oluwaseyi Dr
Physical And Chemical Properties Of Soils In Gambari Forest Reserve Near Ibadan, South Western Nigeria., Akintola O. Opeyemi Dr, Bodede Idayat Adewunmi Dr, Abiola Isaac Oluwaseyi Dr
Journal of Bioresource Management
The different features of soil greatly affect the flora and vegetative diversity of a forest. The physical and chemical characteristics of soils in Onigambari Forest Reserve were evaluated to assess the fertility and productivity status of the soils. Fifteen soil samples collected from different sample locations were analyzed for soil texture (sand, silt and clay), bulk density, porosity, pH, organic matter, total nitrogen, available phosphorus, exchangeable bases (Na, K, Ca and Mg) and available micronutrients (Zn, Cu, Fe and Mn). Texturally, the studied soils were loamy sand and sandy loam with percentage of sands (71.2-84.2 %), silts (7.4-10.4 %) and …
Empirical Models For Predicting Water And Heat Flow Properties Of Permafrost Soils, Michael T. O'Connor, M. Bayani Cardenas, Stephen B. Ferencz, Yue Wu, Bethany T. Neilson, Jingyi Chen, George W. Kling
Empirical Models For Predicting Water And Heat Flow Properties Of Permafrost Soils, Michael T. O'Connor, M. Bayani Cardenas, Stephen B. Ferencz, Yue Wu, Bethany T. Neilson, Jingyi Chen, George W. Kling
Publications
Warming and thawing in the Arctic are promoting biogeochemical processing and hydrologic transport in carbon‐rich permafrost and soils that transfer carbon to surface waters or the atmosphere. Hydrologic and biogeochemical impacts of thawing are challenging to predict with sparse information on arctic soil hydraulic and thermal properties. We developed empirical and statistical models of soil properties for three main strata in the shallow, seasonally thawed soils above permafrost in a study area of ~7,500 km2 in Alaska. The models show that soil vertical stratification and hydraulic properties are predictable based on vegetation cover and slope. We also show that …
Wayne E. Sabbe Arkansas Soil Fertility Studies 2019, Nathan A. Slaton
Wayne E. Sabbe Arkansas Soil Fertility Studies 2019, Nathan A. Slaton
Arkansas Agricultural Experiment Station Research Series
Rapid technological changes in crop management and production require that the research efforts be presented in an expeditious manner. The contributions of soil fertility and fertilizers are major production factors in all Arkansas crops. The studies described within will allow producers to compare their practices with the university’s research efforts. Additionally, soil-test data and fertilizer sales are presented to allow comparisons among years, crops, and other areas within Arkansas.
Change In The Physical And Chemical Properties Of Oil-Contaminated Soil In The Steppe Zone, Zafarjon Jabbarov, Tokhtasin Abdrakhmanov, Shavkat Akhmedov, Urol Nomozov, Muqaddas Abdurahmonova
Change In The Physical And Chemical Properties Of Oil-Contaminated Soil In The Steppe Zone, Zafarjon Jabbarov, Tokhtasin Abdrakhmanov, Shavkat Akhmedov, Urol Nomozov, Muqaddas Abdurahmonova
Bulletin of National University of Uzbekistan: Mathematics and Natural Sciences
Today, around the world as a result of the activities of industrial enterprises, mining, their use, as well as other anthropogenic factors, there is a chemical pollution of the soil cover, a change in soil properties and fertility. Pollution of soils of various types leads to the formation of problems such as soil degradation, a decrease in the qualitative and quantitative level of fertility, as well as other problems associated with the ecosystem. Today, the urgent task is to create remediation measures for soils contaminated to varying degrees with oil and oil products, corresponding to the climatic conditions of the …
Evaluation Of Grasses Raised Through Sewage Water In Musi, Hyderabad, M. Shanti, K. Narasimha Reddy, M. C. Patnaik, R. V. T. Balazzii Naaiik, T. Shashikala, Ch. Chiranjeevi, R. Susheela, M. Anuradha
Evaluation Of Grasses Raised Through Sewage Water In Musi, Hyderabad, M. Shanti, K. Narasimha Reddy, M. C. Patnaik, R. V. T. Balazzii Naaiik, T. Shashikala, Ch. Chiranjeevi, R. Susheela, M. Anuradha
IGC Proceedings (1997-2023)
Growing of various crops utilizing sewage is a common scenario in many urban and sub-urban areas. The crops mostly include forage crops, leafy vegetables, vegetables and sometimes food grains. These sewage waters are known to contain undesirable constituents like heavy metals, pesticide residues besides, harmful pathogens. These undesirable components can make way very possibly from sewage to soils, plant parts; there by to even milk, thus entering into food chain. Musi, a tributary of Krishna on whose banks Hyderabad lays is the main fodder bank of the city. Thousand of hactares of land resembling vast grassland ecosystem is under cultivation …
Mineral Status Of Livestock, Soil, Feeds And Fodders In Ajmer District Of Rajasthan, Sheela Choudhary, Ramkesh Meena, Sunil Dutt Choudhary, Poonam Yadav
Mineral Status Of Livestock, Soil, Feeds And Fodders In Ajmer District Of Rajasthan, Sheela Choudhary, Ramkesh Meena, Sunil Dutt Choudhary, Poonam Yadav
IGC Proceedings (1997-2023)
A large number of Indian livestock suffer from deficiencies or imbalances in minerals because they are mainly maintained on crop residue based rations and grazing without access to mineral supplement (Mc Dowell et al., 1993). Deficiency or imbalance of single or multiple minerals results in enzymatic dysfunction and hormonal imbalance associated with fertility of animals (Maurice, 2003). In India where dietary concentration of fodder fed to the animals are unknown or highly variable due to availability, season, location, forage, species and animal potential (Sharma et al., 2003), it is important to determine plasma mineral concentrations in animal region wise, …
Research On Soil Carbon Storage Of Alpine Grassland Under Different Uses In Qinghai-Tibet Plateau, Tao Li, Youmin Gan, Lei Ji, Shujing Yang, Zhongqi Song
Research On Soil Carbon Storage Of Alpine Grassland Under Different Uses In Qinghai-Tibet Plateau, Tao Li, Youmin Gan, Lei Ji, Shujing Yang, Zhongqi Song
IGC Proceedings (1997-2023)
In recent years, with the temperature rising on the Qinghai-Tibet Plateau, studies have shown that (Shaoqing Wang et al. 1999; Yuchun Qi et al. 2003) the plateau permafrost has great potential for emissions of greenhouse gases such as carbon, nitrogen, because of the remarkable permafrost thermal sensitivity. The Qinghai-Tibet Plateau is a special geographical and ecological unit, which has an important role in global climate change. The study of soil carbon storage of grassland ecosystems in the Qinghai-Tibet Plateau and its distribution characteristics allow the evaluation of different land management. The carbon cycle response and feedback effects of …
The Changing Patterns In Grasslands And Soil Fertility Along The Eastern Eurasian Steppe Transect Across China–Mongolia–Russia, Xiangyang Hou, Leonid Ubugunov, S. Tserendash, Haijun Chen, Wenjun Han, Xiangjun Yun, Ding Yong, Wang Zhen, Lei Ji
The Changing Patterns In Grasslands And Soil Fertility Along The Eastern Eurasian Steppe Transect Across China–Mongolia–Russia, Xiangyang Hou, Leonid Ubugunov, S. Tserendash, Haijun Chen, Wenjun Han, Xiangjun Yun, Ding Yong, Wang Zhen, Lei Ji
IGC Proceedings (1997-2023)
This paper analyses the adaptation and change in species along the north-south Eastern Eurasian Steppe Transect across China – Mongolia – Russia and considers the implications for climate change and management. The plant community diversity, above-ground biomass, N:P ratios of community and of dominant species, soil N (nitrogen), soil P (phosphorus) and AP (available phosphorus) contents were studied along a 1400 km north-south transect. The main findings were: (1) the community diversity and productivity decreased with the increase in latitude and a significant negative correlation was found between the many plant characteristics and latitude (P < 0.05) – decreasing diversity, biomass and N:P ratios; (2) soil AP content was lowest in Inner Mongolia, whereas no significant change in soil total P with latitude was found in China-Mongolia-Russia transect, a significant positive correlation was detected between the soil nutrient (N and AP) and latitude (P < 0.05); (3) a significant positive correlation was evident between plant community P content and soil AP content (P < 0.01), but a negative correlation was found between community N:P ratio and soil AP content (P < 0.05). The soil AP content can be used as a soil properties indicator to reflect the plant communities P content and N: P ratio. It is suggested that greater human activities in Inner Mongolia may be an important factor affecting soil AP content, community N:P and plant growth.
Patch-Differentiation Of Vegetation And Nutrient Cycling In An Extensive Pasture System, Bettina Tonn, Anika Wirsig, Manfred Kayser, Nicole Wrage-Mönnig, Johannes Isselstein
Patch-Differentiation Of Vegetation And Nutrient Cycling In An Extensive Pasture System, Bettina Tonn, Anika Wirsig, Manfred Kayser, Nicole Wrage-Mönnig, Johannes Isselstein
IGC Proceedings (1997-2023)
In extensive grazing systems, ‘patch-grazing’ may lead to the development of a mosaic structure consisting of short, frequently defoliated, and tall, infrequently defoliated patches. If spatial patterns of sward structure are stable over time, this may result in a long-term differentiation of botanical composition and matter fluxes between patch types within a pasture. Patch dynamics, botanical composition and topsoil nutrient concentrations of different patch types were investigated in a long-term grazing experiment in the Solling hills, Germany, where differentiated grazing intensities have been applied for 10 years. Continuously stocked beef cattle grazed to target sward heights of 6 or12 cm …
Copper Status Of Free Ranging Cattle: What’S Hidden Behind? A Pilot Study At The Gilgel Gibe Catchment, Ethiopia, Veronique Dermauw, Thomas Van Hecke, Kechero Yisehak, Gijs Du Laing, Eric Van Ranst, Luc Duchateau, Geert P. J. Janssens
Copper Status Of Free Ranging Cattle: What’S Hidden Behind? A Pilot Study At The Gilgel Gibe Catchment, Ethiopia, Veronique Dermauw, Thomas Van Hecke, Kechero Yisehak, Gijs Du Laing, Eric Van Ranst, Luc Duchateau, Geert P. J. Janssens
IGC Proceedings (1997-2023)
Copper (Cu) deficiency is known to be a major risk for cattle health and production. The widespread problem is due to low absorption rates in the rumen, low Cu concentrations in the natural diet and the presence of dietary Cu antagonists, such as S, Mo and Fe (Suttle 2010). Cattle in the tropics are even more prone to shortage of this mineral, given that the animals are often extensively kept and largely dependent on natural pasture for mineral supply (McDowell and Arthington, 2005). More specifically, in Ethiopia, Cu deficiency was previously described in zebu (Bos indicus) cattle by …