scholarly journals Compressive behaviour of the soil in buffer zones under different management practices in Finland

2008 ◽  
Vol 19 (2) ◽  
pp. 160 ◽  
Author(s):  
M. RÄTY ◽  
R. HORN ◽  
K. RASA
Keyword(s):  
Bulk Density ◽  
Management Practices ◽  
Clay Soil ◽  
Sandy Loam ◽  
Physical And Mechanical Properties ◽  
Total Porosity ◽  
Buffer Zone ◽  
Air Permeability ◽  
Buffer Zones ◽  
The Impact

Soil structure that favours infiltration is essential for successful functioning of vegetated buffer zones. We measured bulk density, air permeability and precompression stress in a clay soil (Vertic Cambisol) and a sandy loam (Haplic Regosol) in Finland, to identify management-related changes in the physical and mechanical properties in the surface soil of buffer zones. In addition, the impact of texture on these properties was studied at depths down to 180?200 cm. Soil cores (240 cm3) were sampled from a cultivated field, from buffer zones harvested by grazing (only in a clay soil) or by cutting and removing the vegetation, and from buffer zones covered with natural grass vegetation. The samples were equilibrated at a matric potential of -6 kPa and compressed at a normal stress range of 20-400 kPa (7 h), followed by stress removal (1 h). Generally, the clay soil was more compressible than the sandy loam. Due to trampling by cattle, the young grazed buffer zone (0-3 cm) had the largest bulk density and the smallest total porosity. For the grazed sites, reduced air permeability (2.7-5.1 × 10-5 m s-1) was found, compared with that of the buffer zone under natural vegetation (15-22 × 10-5 m s-1), indicating decreased pore continuity. Although the old grazed site was easily compressed, compared with the younger site, it showed a greater resilience capacity due to the protective cover of organic residues accumulated on the soil surface.

Effects of tillage and direct drilling on soil properties during the growing season in a long-term barley mono-culture system

1977 ◽  
Vol 88 (2) ◽  
pp. 431-442 ◽  
Author(s):  
J. D. Pidgeon ◽  
B. D. Soane
Keyword(s):  
Moisture Content ◽  
Bulk Density ◽  
Management Practices ◽  
Sandy Loam ◽  
Spring Barley ◽  
Equilibrium Density ◽  
Zero Tillage ◽  
Clay Loam ◽  
Cone Resistance

SUMMARYSoil responses to deep (30–35 cm) and normal (15–20 cm) mouldboard ploughing, chisel ploughing and zero-tillage have been compared for 7 years in a field experiment growing continuous spring barley near Edinburgh. The soil was of variable texture, from moderately well-drained sandy loam overlying loam to imperfectly to poorly drained sandy clay loam overlying clay loam, classified as stagnogleyic brown earth to cambio stagnogley soil. Soils of this type derived from Carboniferous till are widely used for cereal production in south-east Scotland. Measurements of soil physical properties were made at crop emergence, midseason and at harvest to characterize seasonal and long-term responses to tillage and traffic. After the first 3 years bulk density responses varied little within or between seasons, showing a compacted horizon from 0–15 cm under zero-tillage and a looser horizon from 21–33 cm under deep ploughing compared with normal ploughing. Immediately below the depth of normal ploughing there was no difference in bulk density between this treatment and zero-tillage while in some years the chisel-ploughing treatment was denser. Moisture content responses on a weight basis, together with air-filled porosity responses, showed large differences between treatments particularly at the time of crop emergency, indicating substantial alterations in the soil profile hydrology. Expressed on a volume basis the increased moisture content near the surface under zero-tillage became more pronounced and the other effects disappeared. Cone resistance responses were proportionately larger than those for bulk density and showed one major difference in that below the depth of ploughing cone resistance was greater for zero-tillage than normal ploughing in the sixth and seventh seasons, but not previously. For bulk density, but probably not for cone resistance, there were no increases after the third season of zero-tillage, the soil reaching an equilibrium density for the current management practices and machinery usage.

Buffering Borobudur for socio-economic development

2015 ◽  
Vol 5 (2) ◽  
pp. 130-150 ◽  
Author(s):  
Masanori Nagaoka
Keyword(s):  
Management Practices ◽  
Local Community ◽  
Buffer Zone ◽  
Heritage Management ◽  
Empirical Literature ◽  
Literature Study ◽  
Buffer Zones ◽  
Management Planning ◽  
Content Type ◽  
Group Interviews

Purpose – The purpose of this paper is to demonstrate that there was a non-Eurocentric approach being attempted at Borobudur in the 1970s and 1980s. From the case of Borobudur, this research aims to provide lessons for better management practices by clarifying the development of the buffer zone concept and its potential impact on communities. Design/methodology/approach – The paper will examine an empirical literature study using topographic maps, contracts between Governments of Indonesia and Japan, documents concerning the Park Project and local newspapers as well as a sequence of one-to-one and group interviews with the key persons who were involved in the Park Project including villagers at Borobudur. Findings – The development of the Borobudur Archaeological Park began in 1979 and marks an important shift in thinking about buffer zones from a monument-centric approach to the consideration of the wider context and approaches to community participation in the context of international heritage management. Originality/value – There has not yet been a detailed study concerning the progression of the Borobudur Park establishment and implementation of the buffer zone concept per se, and its impact on local community members. Furthermore, crucial management planning documents for the establishment of the Borobudur Archaeological Park have yet to be analysed by scholars. One of the documents is entitled the Updated Former Plans and Schematic Design for Borobudur and Prambanan National Archaeological Parks Project (Updated Plan). The Updated Plan is in principle not disclosed to the public and can only be viewed with permission of the Indonesian authorities thereby lessening opportunities for research to be undertaken on how the Japan International Cooperation Agency Master Plan was modified and the Park Project was executed in the 1970s and 1980s. The author opportunely received permission to access to the Updated Plan by the authorities on 23 November 2012, which made this study possible to pursue.

scholarly journals The Impact of Regeneration and Climate Adaptations of Urban Green–Blue Assets on All-Cause Mortality: A 17-Year Longitudinal Study

2020 ◽  
Vol 17 (12) ◽  
pp. 4577 ◽  
Author(s):  
Zoë Tieges ◽  
Duncan McGregor ◽  
Michail Georgiou ◽  
Niamh Smith ◽  
Josie Saunders ◽  
...  
Keyword(s):  
Health Inequalities ◽  
Positive Impact ◽  
Buffer Zone ◽  
Well Being ◽  
Buffer Zones ◽  
Mitigation And Adaptation ◽  
Urban Waterways ◽  
All Cause Mortality ◽  
The Impact ◽  
Health And Health Inequalities

Urban waterways are underutilised assets, which can provide benefits ranging from climate-change mitigation and adaptation (e.g., reducing flood risks) to promoting health and well-being in urban settings. Indeed, urban waterways provide green and blue spaces, which have increasingly been associated with health benefits. The present observational study used a unique 17-year longitudinal natural experiment of canal regeneration from complete closure and dereliction in North Glasgow in Scotland, U.K. to explore the impact of green and blue canal assets on all-cause mortality as a widely used indicator of general health and health inequalities. Official data on deaths and socioeconomic deprivation for small areas (data zones) for the period 2001–2017 were analysed. Distances between data zone population-weighted centroids to the canal were calculated to create three 500 m distance buffers. Spatiotemporal associations between proximity to the canal and mortality were estimated using linear mixed models, unadjusted and adjusted for small-area measures of deprivation. The results showed an overall decrease in mortality over time (β = −0.032, 95% confidence interval (CI) [−0.046, −0.017]) with a closing of the gap in mortality between less and more affluent areas. The annual rate of decrease in mortality rates was largest in the 0–500 m buffer zone closest to the canal (−3.12%, 95% CI [−4.50, −1.73]), with smaller decreases found in buffer zones further removed from the canal (500–1000 m: −3.01%, 95% CI [−6.52, 0.62]), and 1000–1500 m: −1.23%, 95% CI [−5.01, 2.71]). A similar pattern of results was found following adjustment for deprivation. The findings support the notion that regeneration of disused blue and green assets and climate adaptions can have a positive impact on health and health inequalities. Future studies are now needed using larger samples of individual-level data, including environmental, socioeconomic, and health variables to ascertain which specific elements of regeneration are the most effective in promoting health and health equity.

Protecting Civilians from Cyber Warfare with Cyber Buffer Zones

2019 ◽  
Vol 6 (1) ◽  
pp. 31-48
Author(s):  
Michael Robinson ◽  
Leandros Maglaras ◽  
Kevin Jones ◽  
Helge Janicke
Keyword(s):  
Buffer Zone ◽  
International Community ◽  
Cyber Warfare ◽  
Buffer Zones ◽  
True Value ◽  
The Impact

Cyber peacekeeping has quickly risen in prominence as a viable way to regulate the impact cyber warfare has upon civilian security. In this article, the concept of a cyber buffer zone is explored, and proposals are made on how it could be used to further the goals of a cyber peacekeeping operation. The article suggests what the goals of a cyber buffer zone could be, and translates the activities of a traditional UN buffer zone into a cyber warfare context. It is shown that many of the activities translate well, and that there is true value to be found in a cyber buffer zone. Whilst valuable, it is noted that many challenges await those tasked with implementing such an idea. However, by beginning the debate today the authors can give peacekeeping organisations and the international community as a whole the best opportunity to be prepared for what cyber warfare will bring.

scholarly journals Soil pore distribution as affected by cattle trampling under no-till and reduced-till systems

Agriscientia ◽  
2014 ◽  
Vol 31 (2) ◽  
pp. 93-102 ◽  
Author(s):  
J.O. Iglesias ◽  
J.A. Galantini ◽  
H. Krüger ◽  
S. Venanzi
Keyword(s):  
Bulk Density ◽  
Soil Surface ◽  
Total Porosity ◽  
Crop Productivity ◽  
Pore Distribution ◽  
Water Dynamics ◽  
No Till ◽  
Before And After ◽  
The Impact ◽  
Animal Grazing

Soil pore size affects soil air and water dynamics, and thus influence crop productivity. The aim of this study was to evaluate the impact of reduced-tillage (RT) and no-tillage (NT) systems on soil pore distribution under animal grazing. The soil was sampled at 0-5, 5-10, 10-15 and 15-20 cm depths before and after animal grazing. Bulk density, total porosity and the volume of three pore sizes (macropores, mesopores and micropores) were determined. Differences in total porosity between both tillage systems were statistically significant (P<0.01) in the top 10 cm layer before grazing. Lower total porosity in NT could be related to the effect of previous years'grazing. In RT, disk operations before planting the oat (Avena sativa) crop increased porosity values in the tilled zone at 0-10 cm and decreased them at depths below 10 cm. Macroporosity accounted for 32 (RT) and 20% (NT) of the total porosity in the soil surface, and decreased to 17 (RT) and 17% (NT) in deeper layers. Cattle trampling had a more pronounced effect under RT as compared with NT. Tillage operations increased macroporosity, which had been reduced by cattle trampling. Bulk density and total porosity were adversely affected below 15 cm depth.

scholarly journals Physical Quality of an Oxisol in Different Agricultural Systems in Brazilian Cerrado

2018 ◽  
Vol 10 (7) ◽  
pp. 46
Author(s):  
Diego Dos Santos Pereira ◽  
Rafael Montanari ◽  
Christtiane Fernandes Oliveira ◽  
Jean Carlos de Almeida Ramos ◽  
Alan Rodrigo Panosso ◽  
...  
Keyword(s):  
Bulk Density ◽  
Total Porosity ◽  
Forest Plantations ◽  
Soil Resistance ◽  
Brazilian Cerrado ◽  
Physical Quality ◽  
Soil Physical Quality ◽  
The Impact ◽  
Resistance To Penetration

The soil physical quality is a way of evaluating the current condition of forest plantations that is growing in the southeast region of Mato Grosso do Sul State. In this sense, this work aimed to evaluate the impact of the forest plantations on the physical quality of an Oxisol (Haplic Acrustox) in Cerrado. The experiment was conducted in the Experimental area of the Teaching and Research Farm, of the Engineering college of Ilha Solteira (UNESP), located in the city of Selvíria-MS, situated in the conditions of the Brazilian Cerrado. The soil samples were collected at depths of 0.00-0.10; 0.10-0.20; 0.20-0.30 and 0.30-0.40 m in three areas cultivated for 30 years: area (1) Pine forest (Pinus caribaea var. hondurensis); (2) Eucalyptus forest (Eucalyptus camaldulensis); (3) Reforested ciliary forest, being used a completely randomized design, with 25 replications and 3 treatments. The analyzed attributes of the soil was: macroporosity (Ma), microporosity (Mi), total porosity (TP), bulk density (BD), real particle (RP), soil resistance to penetration (PR), gravimetric moisture (GM), volumetric moisture (VM) and sand, silt and clay contents. The three evaluated areas presented macroporosity below the critical limit (0.100 m³ m-³), thereby impairing the root development. The three evaluated areas affected the physical quality of the soil. Being the physical attributes that most influenced in the reduction of the soil physical quality was the bulk density, total porosity, microporosity, macroporosity and soil resistance to penetration.

scholarly journals Spatial Adaptation of Protected Area Buffer Zones in Urban Setting: Impact on human and conservation agenda

2017 ◽  
Vol 2 (5) ◽  
pp. 65
Author(s):  
Che Bon Ahmad ◽  
Jamalunlaili Abdullah ◽  
Jasmee Jaafar ◽  
Ahamad Nazrin Aris Anuar
Keyword(s):  
Protected Areas ◽  
Buffer Zone ◽  
Economic Benefits ◽  
Environmental Conservation ◽  
Urban Setting ◽  
Buffer Zones ◽  
Dual Purpose ◽  
The Impact ◽  
Depth Interviews ◽  
Open Access Article

It is considerably challenging task to have a buffer zone (BZ) around protected areas (PA) in the urban area due to the conflict of interest between conservation and development. There is a need for ‘win-win situation’. This research is to identify the impact of a potential buffer zone on human and conservation of natural environment which derived from the stakeholders’ understanding. In-depth interviews with stakeholders of the PA and their surroundings were carried out. The findings suggested that a ‘dual purpose’ BZ – environmental conservation and socio-economic benefits are suitable for the FRIM area.Keywords:; Buffer Zone Concept; Protected Areas; Urban Setting; FRIM, MalaysiaISSN: 2398-4287© 2017. The Authors. Published for AMER ABRA by e-International Pub lishing House, Ltd., UK. This is an open access article under the CC BYNC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). Peer–review under responsibility of AMER (Association of Malaysian Environment-Behaviour Researchers), ABRA (Association of Behavioural Researchers on Asians) and cE-Bs (Centre for Environment-Behaviour Studies), Faculty of Architecture, Planning & Surveying, Universiti Teknologi MARA, Malaysia.

scholarly journals Remarkable Effects of Urbanization on Forest Landscape Multifunctionality in Urban Peripheries: Evidence from Liaoyuan City in Northeast China

Forests ◽  
2021 ◽  
Vol 12 (12) ◽  
pp. 1779
Author(s):  
Jinghui Han ◽  
Yulin Dong ◽  
Zhibin Ren ◽  
Yunxia Du ◽  
Chengcong Wang ◽  
...  
Keyword(s):  
Sustainable Development ◽  
Buffer Zone ◽  
Water Yield ◽  
Forest Landscape ◽  
Buffer Zones ◽  
Gradient Effect ◽  
Impervious Area ◽  
Development Goals ◽  
The Impact ◽  
Impact Distance

Forest landscape multifunctionality (FLM) provides multiple benefits, such as climate regulation, water storage, and biodiversity maintenance. However, the external factors limiting FLM have not been fully identified, although addressing them could contribute to sustainable development. The present study aimed to identify and quantify the role of urbanization as an external factor that affects FLM. To this end, impervious area changes in Liaoyuan, China, were observed from 2000 to 2018, and 10 buffer zones at 500 m intervals were established outside the city. Within each buffer zone, we analyzed changes in forest landscape functions, including habitat maintenance, carbon sequestration, and water yield, as well as changes in the multifunctionality of their composition. The urbanization of Liaoyuan was significant in 2000–2018. The functions of the forest landscape became stronger and more stable as they were located further away from the urban edge. We refer to this pattern as the gradient effect of urbanization. Specifically, urbanization affected the investigated functions at a distance of 1000–2500 m. The FLM showed a more significant gradient effect of urbanization. The impact distance of urbanization on the FLM increased from 3000 m in 2000 to over 5000 m in 2018. This impact distance increased significantly whenever urbanization strengthened significantly (i.e., in 2005–2010 and 2015–2018). These findings are instructive for forest and urban managers working to achieve multiple Sustainable Development Goals.

scholarly journals Impact of repeated loads on saline soils of earth roadbed

2021 ◽  
Vol 264 ◽  
pp. 02010
Author(s):  
Abdubaki Kayumov ◽  
Rashidbek Hudaykulov ◽  
Dilfuza Makhmudova ◽  
Dilshod Kayumov
Keyword(s):  
Mechanical Properties ◽  
Saline Soil ◽  
Sandy Loam ◽  
Experimental Studies ◽  
Physical And Mechanical Properties ◽  
Saline Soils ◽  
Short Term ◽  
Repeated Impact ◽  
Residual Strains ◽  
The Impact

The constant development of the road network in Uzbekistan, especially in widespread saline soils, necessitates increased attention to road structure strength. Since vehicles differ in weight and speed, it is obvious that the saline soil under the pavement is subjected to successive impacts of a load of different power and application force. Experimental studies to identify the patterns of changes in saline soils' physical and mechanical properties under repeated and short-term loads were conducted on a device specially designed by the authors of this study. The experiments were conducted on samples of sulfate and chloride-sulfate medium-saline heavy silty sandy loam, compacted at optimal moisture content to maximum density. When conducting the experiment, the impact duration of vertical load Рver = 0.15 MPa on the sample was tload = 0.2 sec, and the interval between the loads was 0.5 sec, the frequency of application was f = 1.2 Hz. The number of short-term load applications was recorded using an electric meter installed on the device. After a certain number of short-term cyclic load applications on the sample, its physical and mechanical properties were determined following the requirements of state standards (GOST). The results of the study show that with an increase in the number of cyclic and short-term load impacts on the sample, the following values increase: residual strain, density, and modulus of setting, relative swelling, swelling pressure, ultrasonic transmission rate, coefficient of filtration; while the porosity, coefficient of porosity, soaking, ultimate strength in uniaxial compression, the coefficient of dynamic viscosity, adherence, the angle of internal friction and the modulus of elasticity of soil decrease. It was determined that under the repeated impact of short-term loads in compacted saline soil, residual strains and short-term redistribution of stresses in the contact of soil and salt particles occur, which leads to a change in the physical and mechanical properties of soil.

scholarly journals Morphology, Growth and Architecture Response of Beech (Fagus orientalis Lipsky) and Maple Tree (Acer velutinum Boiss.) Seedlings to Soil Compaction Stress Caused by Mechanized Logging Operations

Forests ◽  
2019 ◽  
Vol 10 (9) ◽  
pp. 771 ◽  
Author(s):  
Rodolfo Picchio ◽  
Farzam Tavankar ◽  
Mehrdad Nikooy ◽  
Giuseppe Pignatti ◽  
Rachele Venanzi ◽  
...  
Keyword(s):  
Soil Properties ◽  
Bulk Density ◽  
Root Length ◽  
Soil Compaction ◽  
Natural Regeneration ◽  
Total Porosity ◽  
Penetration Resistance ◽  
Stem Length ◽  
Main Root ◽  
The Impact

The Caspian forests of Iran were monitored and evaluated for forest natural regeneration after logging activities for more than a decade. This large area has a substantial ecological, environmental and socio-economic importance. Ground based skidding is the most common logging method in these forests and soil compaction is the most critical consequence of this method. One of the current main topics and important emerging issue in forest research of the last decade are discussed in this study. Soil compaction has major influences on growth and/or mortality rates of forest seedlings. This study has lasted for over ten years so as to have a clear overview related to forest natural regeneration after logging activities. We monitored and evaluated physical soil properties (bulk density, penetration resistance and total porosity) and their effects on maple and beech seedlings on 10-year-old skid trails in the Iranian Caspian forests. Results obtained from evaluating the impact of skid trails within the aforementioned three soil physical parameters were significant; bulk density increased by 12.6% on log skidded routes (between two skidder tires on skid trail) and 36.1% on tire tracks, compared to non-skid trails (1.19 g/cm3), penetration resistance increased by 68% on log skidded routes and 220% on tire tracks, compared to non-skid trails (0.25 MPa), total porosity decreased by 12.8% on log skidded routes and 30.9% on tire tracks, compared to non-skid trails (54%). Among the morphological parameters, lateral root length (LRL) and root penetration depth (RPD) showed the highest decrease at soil compaction compared to the control (decrease in LRL: 60% in maple and 44% in beech; decrease in RPD: 56% in both maple and beech); the main response of growth parameters to soil compaction was found in roots (decrease in dry mass of 36% both in maple and beech); architectural parameters were also influenced by soil compaction, and the response of both seedling species was more evident in the ratio of main root to stem length (RRS) (reduction in RRS 42% in maple, 33% in beech); the ratio of RPD to main root length (RPL) also showed a great reduction (reduction in RPL 20% in maple 33% in beech). Physical soil properties, changes in other environmental properties of skid trails, created differences in beech and maple seedling growth between the skid trails and non-skid trails. This was closely related to the physiological characteristics of the two species studied. Beech seedlings reacted well to a moderate uncovering but they needed little disturbed soil, even if there was a very mixed bedding. Maple seedlings reacted better than beech seedlings to the uncovering and soil disturbance. The effects of the skid trail on morphology, growth and architecture of maple seedlings in the Hyrcanian beech forests showed that the maple, as a seedling, is a suitable species for maintaining the physical properties of skid trails after logging operations in the beech stands in the Caspian forests of Iran.

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