scholarly journals Impacts of the Degraded Alpine Swamp Meadow on Tensile Strength of Riverbank: A Case Study of the Upper Yellow River

Water ◽  
2020 ◽  
Vol 12 (9) ◽  
pp. 2348
Author(s):  
Haili Zhu ◽  
Peng Gao ◽  
Zhiwei Li ◽  
Jiangtao Fu ◽  
Guorong Li ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Alpine Meadow ◽  
Yellow River ◽  
River Morphology ◽  
Root Number ◽  
Root Structure ◽  
Meandering Rivers ◽  
Upper Yellow River

In the meandering riverbank of the Upper Yellow River (UYR), the native alpine swamp meadow (AS) has continuously degenerated into an alpine meadow (AM) due to climate change and intensified grazing. Its implication on river morphology is still not well known. This study examined this effect by in situ measurings of (1) physical properties of roots and their distribution in the soil-root mixture of the upper bank layer, and (2) the tensile strength in terms of excavating tests for triggering cantilever collapses of AS and AM riverbanks. The results showed that the root number in AS was significantly greater than that in AM, though the root distribution in both was similar. Also, the average tensile strength of individual roots in AS was 31,310 kPa, while that in AM was only 16,155 kPa. For the soil-root mixture, it decreased from 67.39 to 21.96 kPa. The weakened mechanical property was mainly ascribed to the lessened root number and the simpler root structure in the soil-root mixture of AM that reduces its ability to resist the external force. These findings confirmed that healthy AS can enhance bank stability and delay the development of tensile cracks in the riverbank of the meandering rivers in the UYR.

Reevaluation of the aeolian sand flux from the Ulan Buh Desert into the upper Yellow River based on in situ monitoring

Geomorphology ◽  
2019 ◽  
Vol 327 ◽  
pp. 307-318 ◽  
Author(s):  
Shimin Tian ◽  
Guo-An Yu ◽  
Enhui Jiang ◽  
Jianying Guo ◽  
Zhiwei Li ◽  
...  
Keyword(s):  
Yellow River ◽  
In Situ Monitoring ◽  
Aeolian Sand ◽  
Ulan Buh Desert ◽  
Upper Yellow River ◽  
Sand Flux

SenCity – Evaluating Users’ Experiences of Intelligent Lighting for Well-Being in Smart Cities

2018 ◽  
pp. 60-67
Author(s):  
Henrika Pihlajaniemi ◽  
Anna Luusua ◽  
Eveliina Juntunen
Keyword(s):  
Case Studies ◽  
Smart City ◽  
Smart Cities ◽  
Well Being ◽  
Evaluation Methods ◽  
Data Analyses ◽  
Sense Of Security ◽  
System Data

This paper presents the evaluation of usersХ experiences in three intelligent lighting pilots in Finland. Two of the case studies are related to the use of intelligent lighting in different kinds of traffic areas, having emphasis on aspects of visibility, traffic and movement safety, and sense of security. The last case study presents a more complex view to the experience of intelligent lighting in smart city contexts. The evaluation methods, tailored to each pilot context, include questionnaires, an urban dashboard, in-situ interviews and observations, evaluation probes, and system data analyses. The applicability of the selected and tested methods is discussed reflecting the process and achieved results.

Si Crans-Montana meurt. Soigner le corps malade d’une station

ARCHALP ◽  
2020 ◽  
Vol 2020 (N. 4 / 2020) ◽  
Author(s):  
Patrick Giromini
Keyword(s):  
Social Context ◽  
Alpine Meadow ◽  
Action Plan ◽  
Geographic Location ◽  
Built Heritage ◽  
Environment And Health ◽  
Health Action ◽  
The Relationship ◽  
Health Action Plan

New Alpine companies, like Crans-Montana on the Haut-Plateau, remain, more often than not, trapped in representative logic opposing the clan of modernists to that of defenders of values anchored in an ideal-typical tradition. The Haut-Plateau territory, so named due to its geographic location and topographic conformation – not for the morphology of the soil – was still a space free of any construction in the mid-nineteenth century. This vast alpine meadow was marked by a few utility buildings for sheltering cattle and hay during the intermediate seasons that precede the full summer. At the turn of the 3rd millennium, the built heritage, essentially consisting of hotel structures and holiday residences, is no longer able to welcome the new socio-economic dynamics linked to the mono-culture of skiing. This crisis calls habits, both old and new, into question, given the youth of the tourist resort. In June 2000, a Federal programme selected Crans-Montana as a case study for testing an Environment and Health Action Plan. This provided an opportunity for a group of architects to formulate an inter-municipal blueprint that activated a series of urban renewal projects. The new architectural formulae that emerge try to go beyond stylistic modernism by reinterpreting the relationship with the built environment and its social context.

Site specific agricultural soil management with the use of new technologies

2013 ◽  
Vol 16 (1) ◽  
pp. 59-67
Keyword(s):  
New Technologies ◽  
Digital Interface ◽  
Appropriate Treatment ◽  
Wide Range ◽  
Soil Variation ◽  
Soil Information ◽  
Remote Sensing Techniques ◽  
Agricultural Areas

<p>The Soil Science Institute of Thessaloniki produces new digitized Soil Maps that provide a useful electronic database for the spatial representation of the soil variation within a region, based on in situ soil sampling, laboratory analyses, GIS techniques and plant nutrition mathematical models, coupled with the local land cadastre. The novelty of these studies is that local agronomists have immediate access to a wide range of soil information by clicking on a field parcel shown in this digital interface and, therefore, can suggest an appropriate treatment (e.g. liming, manure incorporation, desalination, application of proper type and quantity of fertilizer) depending on the field conditions and cultivated crops. A specific case study is presented in the current work with regards to the construction of the digitized Soil Map of the regional unit of Kastoria. The potential of this map can easily be realized by the fact that the mapping of the physicochemical properties of the soils in this region provided delineation zones for differential fertilization management. An experiment was also conducted using remote sensing techniques for the enhancement of the fertilization advisory software database, which is a component of the digitized map, and the optimization of nitrogen management in agricultural areas.</p>

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