scholarly journals Plant Species Selection and Community Configuration for Residential Areas Based on the Digital Technology

2020 ◽  
Vol 11 (2) ◽  
pp. 75
Author(s):  
Heyi Wei ◽  
Wenhua Jiang

Sunshine is a key ecological factor for plant growth, development, reproduction and their community stability. The SOLWEIG model combined with ArcGIS and, AutoCAD software as a digital platform was used in this paper, and which focus on sunshine duration simulation by these digital technologies. Results show that the maximum sunshine duration is 10 hours, the minimum sunshine duration is 0 hours, and the average is about 4 hours in the sample points of the study area. The order from high to low is N>D>F>B>E>G>K>C>A>L>M (patches of planting area) in sunshine duration, the average highest value is 6 hours and the lowest is 1.6 hours for the 11 greening patches in this study. These results also indicate that the building height and layout is the major factor of influence in the change of sunshine hours when other parameters are stable. On this basis, the research combined with the standard system of sunshine requirements of landscape plants, an empirical analysis of plant selection and community configuration to show through a case of Tongxiang city in Zhejiang province, China. The value of this research is to provide a theoretical method for plant selection and community configuration in urban built-up areas.

Author(s):  
Sandra Jaworeck ◽  
Peter Kriwy

The positive impact of sunshine on self-rated health is well known. For the first time, the relationship between sunshine and self-rated health is examined in the context of latitude lines in international comparison. The further people live from the equator, the lower sun exposure (UVB exposure) and the more often they experience a vitamin D deficiency. UVB exposure decreases with degrees of latitudinal lines, and in addition to that, sunshine duration is shorter in northern countries. In order to consider the connection, sunshine duration and degree of latitude lines were manually enriched from the German Meteorological Service (Deutscher Wetterdienst) to the International Social Survey Programs (2011): Health and Health Care and analyzed with a logistic multilevel model, as well as the inclusion of sunshine duration as a mediator. If sunshine hours, as well as latitude lines, are considered separately in models, both show a statistically significant effect. Together in one model, the sunshine hours lose their relationship and additionally there is no mediation. This suggests that the location of the region is the decisive component when considering self-rated health. Furthermore, an interaction between age and sunshine hours as well as latitude lines is also shown.


2014 ◽  
Vol 716-717 ◽  
pp. 525-528
Author(s):  
Cheng Li Yao

In this paper, we describe the content and features of digital technology and give a brief introduction about the function, role and prospects of digital technology in the field of landscape architecture from data collection, data sharing, exchange of information, spatial analysis and extraction, expression landscape, landscape evaluation, plant selection, dynamic monitoring and management, remote design, and other aspects of the virtual landscape technology. In addition, we give a brief talk from the point of the function and role of application of digital technology in the field of landscape architecture. Finally, we proposed the key question of the application of digital technology in current days.


2014 ◽  
Vol 17 (1) ◽  
pp. 3-11 ◽  

<div> <p>Trends in pan evaporation (E<sub>pan</sub>) and temperature were identified through the Mann-Kendall test over Jaisalmer to probe the existence of evaporation paradox in arid environments of Thar Desert, northwest India. We also analyzed trends in rainfall, relative humidity, wind speed, and sunshine duration in the context of climate change. Decreasing trends in E<sub>pan </sub>were witnessed over Jaisalmer in the months of January, June, October and November in the range of -2.04 to -4.1 mm/year. Significant rainfall decreases were witnessed in the three crucial months of monsoon season, i.e., July, August and September, in range of -0.23 to -1.25 mm/year. Increasing trends in mean temperature were witnessed corresponding to annual and monthly (January, April, September, October and November) time scales in the range of 0.03 to 0.07 &deg;C/year. The simultaneous E<sub>pan </sub>decrease and temperature rise at Jaisalmer confirmed the existence of evaporation paradox in the months of winter and post-monsoon seasons, which may be due to decreases in wind speed and bright sunshine hours. The increase in temperature along with decreases in E<sub>pan</sub>, rainfall, sunshine duration, and wind speed over Jaisalmer may have far reaching consequences for the fragile ecosystem of the Thar Desert.</p> </div> <p>&nbsp;</p>


MAUSAM ◽  
2021 ◽  
Vol 60 (4) ◽  
pp. 437-454
Author(s):  
A. K. JASWAL

Changes in sunshine duration in association with total cloud amount, rainy days and good visibility days over India were examined for 1970-2006. Climatologically, annual total sunshine duration over west Rajasthan and adjoining Gujarat is more than 3100 hours which is ideal for harnessing solar energy over these regions. The trend analysis indicates significant decrease in sunshine duration over the country for all months (except June) and the maximum decrease has taken place in January (-0.44 hour/decade) followed by December (-0.39 hour/decade). Seasonally, decline in sunshine hours is highest in winter and post monsoon (4% per decade) and lowest in monsoon (3% per decade). Decadal variations indicate maximum decrease in sunshine over the Indo-Gangetic plains and south peninsula during 1990-1999. Spatially, the decreasing trends in sunshine hours are highest in Indo-Gangetic plains and south peninsula while regions over Rajasthan and Gujarat have lowest decrease. Out of 40 stations under study, the maximum decrease in sunshine has occurred at New Delhi (winter at 13% per decade and post monsoon at 10% per decade) and Varanasi (summer and monsoon at 7% per decade). Correlation analysis of sunshine duration with total cloud amount, rainy days and good visibility days indicates regional and seasonal variations in factors explaining the long term trends in sunshine duration over the country.


2013 ◽  
Vol 9 (1) ◽  
pp. 27-40 ◽  
Author(s):  
S. Poljanšek ◽  
A. Ceglar ◽  
T. Levanič

Abstract. We present the first summer sunshine reconstruction from tree-ring data for the western part of the Balkan Peninsula. Summer sunshine is tightly connected with moisture stress in trees, because the moisture stress and therefore the width of annual tree-rings is under the influence of the direct and interactive effects of sunshine duration (temperature, precipitation, cloud cover and evapotranspiration). The reconstruction is based on a calibrated z-scored mean chronology, calculated from tree-ring width measurements from 7 representative black pine (Pinus nigra Arnold) sites in Bosnia and Herzegovina (BiH). A combined regression and scaling approach was used for the reconstruction of the summer sunshine. We found a significant negative correlation (r = −0.54, p < 0.0001) with mean June–July sunshine hours from Osijek meteorological station (Croatia). The developed model was used for reconstruction of summer sunshine for the time period 1660–2010. We identified extreme summer events and compared them to available documentary historical sources of drought, volcanic eruptions and other reconstructions from the broader region. All extreme summers with low sunshine hours (1712, 1810, 1815, 1843, 1899 and 1966) are connected with volcanic eruptions.


2014 ◽  
Vol 1010-1012 ◽  
pp. 1189-1193
Author(s):  
Yu Duan Ou ◽  
Chu Biao Wang ◽  
Xiao Dan Fan ◽  
Tian Wu

Indication function of Guangdong indigenous tree species to different climatic factors (mean annual temperature, rainfall and sunshine hours) was confirmed with indicator species analysis. The results showed that the climatic factors had significant influence on the distribution of indigenous tree species in the following order: mean annual temperature>mean annual sunshine hours>mean annual rainfall. Actinodaphne lecomtei, etc. were indicator species for north of Lianshan (≤19°C). Liquidambar acalycin, etc, were indicator species for Northern Guangdong's mountainous areas (≤1400 h). Adinandra megaphylla was indicator species for Yangjiang coastal regions (>2200 mm). This research provided scientific basis for indigenous broadleaves tree species selection in regional forestation.


2010 ◽  
Vol 26 (6) ◽  
pp. 583-593 ◽  
Author(s):  
Svenja Marquardt ◽  
Stephan G. Beck ◽  
Felix D. Encinas ◽  
Humberto Alzérreca A. ◽  
Michael Kreuzer ◽  
...  

Abstract:The frequency of selection of functional groups and plant species by free-ranging cattle foraging in a diverse environment and its changes during the dry and the following prehumid seasons were investigated using direct observations and bite counting. The study was conducted at two sites in the Bolivian–Tucuman montane forests in southern Bolivia, by including datasets of a total of 16 animals. Across both study sites and the entire observation period (May to October/November), the cattle were found to select a broad spectrum of plant species from different functional groups. However, just a limited number of species made up a considerable contribution to overall plant selection. The functional group of the graminoids was selected most frequently, but their contribution to plant selection decreased significantly from 63.5% of total bites in May to 15.9% in September/October, in accordance with a decrease in availability. Selection of woody plants (shrubs and tree parts, the latter mainly in the form of leaf litter and fruits) increased with time, reaching its peak at the beginning of the prehumid season, while the herbs showed a curvilinear pattern of selection which was highest in August. Plant species belonging to the functional groups of ferns, climbers and epiphytes were also selected by the cattle, but generally at low relative proportions. Plant selection might be influenced by temporal differences in nutritional quality and availability of the preferred plant species and functional groups. Sampling behaviour seems to be the most likely reason for the inclusion of a broad range of plant species with overall low contribution to plant selection.


Author(s):  
Bogdan Bochenek ◽  
Mateusz Jankowski ◽  
Marta Gruszczynska ◽  
Grzegorz Nykiel ◽  
Maciej Gruszczynski ◽  
...  

Coronavirus disease 2019 (COVID-19) is an infectious disease caused by the novel coronavirus. The role of environmental factors in COVID-19 transmission is unclear. This study aimed to analyze the correlation between meteorological conditions (temperature, relative humidity, sunshine duration, wind speed) and dynamics of the COVID-19 pandemic in Poland. Data on a daily number of laboratory-confirmed COVID-19 cases and the number of COVID-19-related deaths were gatheredfrom the official governmental website. Meteorological observations from 55 synoptic stations in Poland were used. Moreover, reports on the movement of people across different categories of places were collected. A cross-correlation function, principal component analysis and random forest were applied. Maximum temperature, sunshine duration, relative humidity and variability of mean daily temperature affected the dynamics of the COVID-19 pandemic. An increase intemperature and sunshine hours decreased the number of confirmed COVID-19 cases. The occurrence of high humidity caused an increase in the number of COVID-19 cases 14 days later. Decreased sunshine duration and increased air humidity had a negative impact on the number of COVID-19-related deaths. Our study provides information that may be used by policymakers to support the decision-making process in nonpharmaceutical interventions against COVID-19.


HortScience ◽  
1990 ◽  
Vol 25 (9) ◽  
pp. 1181f-1181
Author(s):  
Mary Haque ◽  
Reginald Baumgardner ◽  
David Price

Several forms of computer technology have been successfully integrated into classes at Clemson University using Mac II computers and MacDraft software. Beginning students are producing professional looking plans with consistent line quality and individual graphic style. Plant selection for designs has been augmented through plant images contained on two videodiscs; Woody Landscape Plants of the Temperate United States and Clemson University Video Encyclopedia of Herbaceous Ornamental. Access is accomplished via MacRAPID© CU, a Hypercard© stack that also provides a linkage to MacCAPS© Terisan. With these two programs, the user can quickly select and view, based on specific criteria, plants suitable for a given landscape.


2015 ◽  
Vol 7 (1) ◽  
pp. 128-141 ◽  
Author(s):  
Yuan Liu ◽  
Buchun Liu ◽  
Xiaojuan Yang ◽  
Wei Bai

Evapotranspiration integrates atmospheric demand and surface conditions. The Penman-Monteith equation was used to calculate annual and seasonal reference evapotranspiration (ET0) and thermodynamic and aerodynamic components (ETrad and ETaero) at 77 stations across northeast China, 1961–2010. The results were: (1) annual ETrad and ETaero had different regional distribution, annual ETrad values decreased from south to north, whereas the highest ETaero values were recorded in the eastern and western regions, the lowest in the central region; (2) seasonal ETaero distributions were similar to seasonal ET0, with a south–north longitudinal pattern, while seasonal ETrad distributions had a latitudinal east-west pattern; and (3) in the group for ET0 containing 69 sampling stations, effects of climatic variables on ET0 followed sunshine hours &gt; relative humidity &gt; maximum temperature &gt; wind speed. Changes in sunshine hours had the greatest effect on ETrad, but wind speed and relative humidity were the most important variables to ETaero. The decline in sunshine duration, wind speed, or both over the study period appeared to be the major cause of reduced potential evapotranspiration in most of NEC. Wind speed had opposite effects on ETrad and ETaero, and therefore the effect of wind speed on ET0 was not significant.


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