scholarly journals The relationship between the density of Dianthus superbus L. var. longicalycinus (Maxim.) Williams and different soil disturbance intensity on the tsunami-stricken coastal forest in Sendai Plain

2017 ◽  
Vol 43 (1) ◽  
pp. 45-50
Author(s):  
Satoshi Osawa ◽  
Saori Uchino
Keyword(s):  
Soil Disturbance ◽  
Coastal Forest ◽  
Disturbance Intensity ◽  
Sendai Plain ◽  
The Relationship

scholarly journals Applicability of the photogrammetry technique to determine the volume and the bulk density of small soil aggregates

Soil Research ◽  
2016 ◽  
Vol 54 (3) ◽  
pp. 354 ◽  
Author(s):  
D. Moret-Fernández ◽  
B. Latorre ◽  
C. Peña ◽  
C. González-Cebollada ◽  
M. V. López
Keyword(s):  
Strong Correlation ◽  
General Trend ◽  
Conservation Tillage ◽  
Soil Aggregates ◽  
Three Dimensional ◽  
Digital Camera ◽  
Aggregate Size ◽  
Soil Disturbance ◽  
The Relationship ◽  
Dimensional Surface

Aggregate density (ρ) is defined as the relationship between the mass and the volume occupied by an aggregate. Previous studies have characterised ρ on large to medium-sized soil aggregates (>4 mm diameter); however, little information is available for smaller aggregates (<4 mm). The objective of this study was to test the viability of the photogrammetry (PHM) technique to determine the volume and subsequent ρ of small soil aggregates (1–8 mm diameter). The method uses a standard digital camera that photographs a rotating aggregate and reconstructs its three-dimensional surface and the corresponding volume. To validate the method, the volume estimated with PHM on rough stones of different sizes (1–16 mm diameter) was compared with the corresponding volume measured by the Archimedes’ principle. The method was tested on soil aggregates 1–8 mm in diameter, collected from two sites under conventional and conservation tillage treatments. The strong correlation (R2 > 0.99, P < 0.0001) between the volumes estimated on rough stones with the PHM and Archimedes methods demonstrates that this technique can be satisfactorily used to estimate the volume and, consequently, the ρ of small soil aggregates. The results showed an increase in ρ with decreasing aggregate size. A general trend of increasing ρ with the degree of soil disturbance by tillage was also observed.

Reduction effect of tsunami sediment transport by a coastal forest: Numerical simulation of the 2011 Tohoku tsunami on the Sendai Plain, Japan

2020 ◽  
Vol 407 ◽  
pp. 105740
Author(s):  
Satoshi Kusumoto ◽  
Kentaro Imai ◽  
Aditya Riadi Gusman ◽  
Kenji Satake
Keyword(s):  
Numerical Simulation ◽  
Sediment Transport ◽  
Coastal Forest ◽  
2011 Tohoku Tsunami ◽  
Reduction Effect ◽  
Tsunami Sediment ◽  
Sendai Plain ◽  
Tohoku Tsunami

Regional Suitability Assessment for the Mouseear Hawkweed (Hieracium pilosella) Invasion in Patagonian Rangelands

2016 ◽  
Vol 9 (4) ◽  
pp. 242-251 ◽  
Author(s):  
Ruth B. Rauber ◽  
Pablo A. Cipriotti ◽  
Marta B. Collantes ◽  
Juan P. Martini ◽  
Enrique Frers
Keyword(s):  
Management Practices ◽  
Linear Models ◽  
Regional Scale ◽  
Soil Disturbance ◽  
Field Surveys ◽  
Suitability Assessment ◽  
Hieracium Pilosella ◽  
Critical Areas ◽  
High Level ◽  
The Relationship

Several studies have been carried out to evaluate the main drivers behind biological invasions and their ecological consequences. Nevertheless, it is still extremely difficult to acquire a full understanding of the invasion process due to its high level of complexity. The problems that complicate invasion studies are low detection during the early stages of invasion, and the high survey cost of working over large, inaccessible, and rugged areas. The studies that develop efficient tools to reduce costs and time will help to control or mitigate the invaders' damaging effects. Hieracium pilosella is an aggressive invader of grasslands worldwide. The aim of this work was to conduct a regional assessment for the suitability of H. pilosella invasion in the Fuegian Steppe by combining field surveys, spatial modeling, and geographic information system tools. We recorded the invader cover in 167 sample sites and we determined the relationship between environmental variables and the probability of invasion. This was carried out by the selection of alternative generalized linear models. The best model indicates that disturbance and plant community were the main drivers to predict invasion suitability on a regional scale. Therefore, these two variables were used as main inputs to construct a regional invasion suitability map, which identifies the most critical areas for prevention, control, and further monitoring. This approach corresponds to a tool that permits us to evaluate the suitability of invasion even over large and inaccessible areas. The results especially warn about soil disturbance associated with usual management practices in Fuegian rangelands.

scholarly journals Chronological trends in the number of birds captured and the relationship to forest succession in a coastal forest near the city of Niigata, Japan

2011 ◽  
Vol 60 (2) ◽  
pp. 178-190 ◽  
Author(s):  
Makoto Nakata ◽  
Saori Minami ◽  
Akira Chiba ◽  
Yasuo Itoh ◽  
Yoshizoh Komatsu ◽  
...  
Keyword(s):  
Forest Succession ◽  
Coastal Forest ◽  
The Relationship ◽  
The City

scholarly journals The survival situation of the coastal forest eight years after a tsunami struck the Sendai plain

2019 ◽  
Vol 45 (1) ◽  
pp. 62-67
Author(s):  
NANAUMI Erika ◽  
OSAWA Satoshi ◽  
ISHIKAWA Mikiko
Keyword(s):  
Coastal Forest ◽  
Sendai Plain

scholarly journals Disturbance Effect of Pipe Jacking Group Adjacent Excavation on Surrounding Soil

2021 ◽  
Vol 2021 ◽  
pp. 1-21
Author(s):  
Changbai Wang ◽  
Jimin Liu ◽  
Hua Cheng ◽  
Haibing Cai
Keyword(s):  
Mutual Influence ◽  
Water Pressure ◽  
Interaction Mechanism ◽  
Earth Pressure ◽  
Soil Disturbance ◽  
Disturbance Intensity ◽  
General Law ◽  
History Of ◽  
Pipe Jacking ◽  
Lateral Disturbance

Under the modern and complicated urban environment, clarifying the interaction mechanism and mutual influence mechanism between the urban tunnel and the surrounding environment is of considerable significance to the construction and operation of the tunnel. To understand and grasp the excavation-induced disturbance range and mechanism of adjacent pipeline jacking group on surrounding soils, this paper carries out relevant researches. Based on a case history of a three-hole parallel adjacent jacking pipeline in shallow overburden, a field test and assessment are performed. By setting monitoring points around the monitoring section, the earth pressure and water pressure under different buried depths and different spacing are monitored. For further discussion, the general law of soil disturbance around single-hole, double-hole, and three-hole jacking is investigated, the calculation method of lateral disturbance range and overlapping area range of pipe jacking group is deduced, and the degree of soil disturbance is evaluated as well. The results show that there will be different degrees of disturbance superposition in parallel multihole jacking due to the influence of the spacing, and the disturbance intensity is greatly affected by the parallel distance and buried depth.

scholarly journals Endophytic mycobiota from leaves of Indigofera suffruticosa Miller (Fabaceae): The relationship between seasonal change in Atlantic Coastal Forest and tropical dry forest (Caatinga), Brazil

2015 ◽  
Vol 9 (18) ◽  
pp. 1227-1235 ◽  
Author(s):  
Prazeres dos Santos Irailton ◽  
Diogo Pereira Bezerra Jadson ◽  
Maria de Souza Motta Cristina ◽  
da Silva Cavalcanti Marilene ◽  
Lucia de Menezes Lima Vera
Keyword(s):  
Seasonal Change ◽  
Tropical Dry Forest ◽  
Dry Forest ◽  
Coastal Forest ◽  
Atlantic Coastal Forest ◽  
The Relationship ◽  
Atlantic Coastal

Experiment on the Anti-Blocking Technology in No-Tillage Wheat Seeding

2012 ◽  
Vol 472-475 ◽  
pp. 55-59
Author(s):  
Xi Rui Zhang ◽  
Lu Guo ◽  
Hong Wen Li ◽  
Jin He ◽  
Lian Rui Zhang
Keyword(s):  
Fuel Consumption ◽  
Field Experiments ◽  
Dry Weight ◽  
Soil Disturbance ◽  
No Tillage ◽  
Double Cropping ◽  
Blocking Device ◽  
Passing Ability ◽  
The Impact ◽  
The Relationship

Due to the large amount of straw in the double cropping area of the northern part in China, this paper developed an anti-blocking device in rotary tillage with three different types: ribbon, grinding and breaking the stubbles. Through analyzing the mechanism of anti-blocking devices, the relationship parameters of the passing ability of equipment, quantity of soil disturbance, fuel consumption and crop growth are identified. Field experiments demonstrate that adopting different anti-blocking devices in the dynamic driving type can produce different seed beds, can influence the quantity of soil disturbance of no-tillage land as well as the roots growth of wheat . By comparing the properties of no-tillage seeding of three anti-blocking devices ,such as quantity of soil disturbance, fuel consumption per unit and the growth of wheat (emergence number, tiller number, secondary root number and dry weight per plant), the impact of grinding type of ribbon is the best, rotary tillage type of ribbon takes second place, type of breaking the stubbles of ribbon rebases.

Soil disturbance and disturbance intensity: Response of soil nutrient concentrations of alpine meadow to plateau pika bioturbation in the Qinghai-Tibetan Plateau, China

Geoderma ◽  
2017 ◽  
Vol 307 ◽  
pp. 98-106 ◽  
Author(s):  
Cheng Yu ◽  
Jing Zhang ◽  
Xiao Pan Pang ◽  
Qian Wang ◽  
Yu Pei Zhou ◽  
...  
Keyword(s):  
Tibetan Plateau ◽  
Alpine Meadow ◽  
Soil Nutrient ◽  
Soil Disturbance ◽  
Nutrient Concentrations ◽  
Plateau Pika ◽  
Disturbance Intensity ◽  
Intensity Response
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