scholarly journals Climate Change and Bio-Diversity

2021 ◽  
Vol 7 (2) ◽  
pp. 37-41
Author(s):  
Shabnam Ara ◽  
Maisnam Sandhyarani Devi
Keyword(s):  
Climate Change ◽  
Human Factors ◽  
Human Activities ◽  
The Internet ◽  
Secondary Source ◽  
Common Phenomenon

Climate change has become a common phenomenon now a days. Both natural as well as the human factors are responsible for it, but the changes have been accelerated by mainly human activities on large extent. Due to climate change the life of bio-diversity are underthreat. Many species have already extinct and many are on the brim of extinction. Due to loss of habitat and food of the animals they are force to migrate different places which may be not suitable for them. Here in this paper an attempt has made to identify the factors responsible for climate change and how far this climate change has affected the life of the plants and animals.  The research is purely based on the secondary source of data collect through the internet.

Analysis of the role of climatic and human factors in runoff variations (case study: Lighvan River in Urmia Lake Basin, Iran)

2019 ◽  
Vol 11 (1) ◽  
pp. 291-302 ◽  
Author(s):  
R. Kanani ◽  
A. Fakheri Fard ◽  
M. A. Ghorbani ◽  
Y. Dinpashoh
Keyword(s):  
Climate Change ◽  
Human Factors ◽  
Human Activities ◽  
Climatic Factors ◽  
Hydrologic Model ◽  
Climatic Variables ◽  
Data Series ◽  
Lake Basin ◽  
Discharge Data ◽  
The Impact

Abstract In recent years, river flows have significantly decreased due to regional or global climate change and human activities, especially in the arid and semi-arid regions. In this study, the effects of climate change and human activities on the runoff responses were examined using hydrologic sensitivity analysis and hydrologic model simulation in the Lighvan basin located in the northwest of Iran. The Mann–Kendall test was applied to identify the trends in hydroclimatic data series. Also, the Pettitt test was used to detect change points in the annual discharge values and climatic variables. The results showed that there was negative trend in discharge data series, and examination of the climatic factors indicated that there was an increase in the temperature values and a decrease in the relative humidity values at the basin. The rapid changes in runoff values and most of the climatic variables occurred in the mid-1990s. The effect percentages of the human factors and climatic factors on runoff reduction in all the models used were 65–84% and 16–35%, respectively. Therefore, the impact of human activities on the river flow changes was significant.

Local Policy for a Protected Environmental Area Management: The Case of Limiting Motorized Vehicles in Park of Canigou in Pyrenées Orientales

2018 ◽  
Vol 1 (1) ◽  
Keyword(s):  
Climate Change ◽  
Human Activities ◽  
Energy Use ◽  
Local Level ◽  
Air Traffic ◽  
Small Scale ◽  
Individual Action ◽  
Local Policy ◽  
Motorized Vehicles ◽  
Local Levels

“We regard the recent science –based consensual reports that climate change is, to a large extend, caused by human activities that emit green houses as tenable, Such activities range from air traffic, with a global reach over industrial belts and urban conglomerations to local small, scale energy use for heating homes and mowing lawns. This means that effective climate strategies inevitably also require action all the way from global to local levels. Since the majority of those activities originate at the local level and involve individual action, however, climate strategies must literally begin at home to hit home.”

scholarly journals The effects of ENSO, climate change and human activities on the water level of Lake Toba, Indonesia: a critical literature review

2021 ◽  
Vol 8 (1) ◽  
Author(s):  
Hendri Irwandi ◽  
Mohammad Syamsu Rosid ◽  
Terry Mart
Keyword(s):  
Climate Change ◽  
Water Level ◽  
Human Activities ◽  
Southern Oscillation ◽  
Climatic Conditions ◽  
Water Levels ◽  
Dominant Factor ◽  
Climate Projections ◽  
Continuous Increase ◽  
The Future

AbstractThis research quantitatively and qualitatively analyzes the factors responsible for the water level variations in Lake Toba, North Sumatra Province, Indonesia. According to several studies carried out from 1993 to 2020, changes in the water level were associated with climate variability, climate change, and human activities. Furthermore, these studies stated that reduced rainfall during the rainy season due to the El Niño Southern Oscillation (ENSO) and the continuous increase in the maximum and average temperatures were some of the effects of climate change in the Lake Toba catchment area. Additionally, human interventions such as industrial activities, population growth, and damage to the surrounding environment of the Lake Toba watershed had significant impacts in terms of decreasing the water level. However, these studies were unable to determine the factor that had the most significant effect, although studies on other lakes worldwide have shown these factors are the main causes of fluctuations or decreases in water levels. A simulation study of Lake Toba's water balance showed the possibility of having a water surplus until the mid-twenty-first century. The input discharge was predicted to be greater than the output; therefore, Lake Toba could be optimized without affecting the future water level. However, the climate projections depicted a different situation, with scenarios predicting the possibility of extreme climate anomalies, demonstrating drier climatic conditions in the future. This review concludes that it is necessary to conduct an in-depth, comprehensive, and systematic study to identify the most dominant factor among the three that is causing the decrease in the Lake Toba water level and to describe the future projected water level.

Scaling Our Impact: Emerging Human Factors Applications Addressing Societal Challenges

2020 ◽  
Vol 64 (1) ◽  
pp. 863-867
Author(s):  
Courtney Rogers ◽  
Rupa S. Valdez ◽  
Juan E. Gilbert ◽  
Karen Lange Morales ◽  
Wendy Rogers ◽  
...  
Keyword(s):  
Climate Change ◽  
Older Adults ◽  
Human Factors ◽  
Food Insecurity ◽  
Social Isolation ◽  
Universal Access ◽  
Mental Healthcare ◽  
Societal Challenges ◽  
Human Factors And Ergonomics ◽  
Societal Challenge

There is an increasing need and interest for Human Factors and Ergonomics (HFE) professionals to apply our discipline to a larger context. HFE researchers are starting to conduct research outside of traditional settings, focusing their efforts on complex societal challenges; however, this type of work is still in its infancy and there is a need to define how HFE can be used in broader contexts, outside of formal institutions. In this panel, we begin a formalized conversation of how our field can scale its impact. Each panelist will introduce a societal challenge they are addressing and discuss how HFE can be adapted to this context. The topics of this panel will span elections technology, sustainability and climate change, universal access to mental healthcare, social isolation in older adults, and food insecurity. This session will conclude with a moderated discussion between the panelists and audience to brainstorm specific societal challenges that HFE can address as well as how methods can be adapted to this context.

Intra-Sentential Code-Switching among Bilingual Saudis on Twitter

2018 ◽  
Vol 10 (2) ◽  
pp. 1
Author(s):  
Hussein Ali Habtoor ◽  
Ghzail Faleh Almutlagah
Keyword(s):  
Data Analysis ◽  
Language Contact ◽  
Qualitative Method ◽  
Code Switching ◽  
Social Aspects ◽  
The Internet ◽  
Common Phenomenon

Code switching (CS) is a common phenomenon in language contact situations wherein bilinguals utilize two languages in the same context. This study investigated the occurrence of intra-sentential code switching by 12 bilingual Saudi females on twitter who differed in age and education. The data were collected by taking screenshot for 1260 tweets. Data were analysed statistically to show the phenomena of Arabic- English code switching. Moreover, a qualitative method was used for data analysis. Findings of the study showed that code-switching was observed clearly on twitter and that intra-sentential code-switching occurs frequently. It was also observed that at the level of particular syntactic categories in Arabic-English CS, nouns were the most often switched elements in the corpus. This study focused on nouns and verbs as examples of these syntactic categories of CS. English as inserted language was mostly used by participant, so the study focused on Arabic sentences in which English is the embedded language. Finally, it is found that the most inserted words in English were related to the internet and other social aspects. 

scholarly journals Response of LUCC on Runoff Generation Process in Middle Yellow River Basin: The Gushanchuan Basin

Water ◽  
2020 ◽  
Vol 12 (5) ◽  
pp. 1237 ◽  
Author(s):  
Caihong Hu ◽  
Li Zhang ◽  
Qiang Wu ◽  
Shan-e-hyder Soomro ◽  
Shengqi Jian
Keyword(s):  
Climate Change ◽  
Human Activities ◽  
Yellow River ◽  
Trend Test ◽  
Generation Process ◽  
Runoff Generation ◽  
Contribution Rate ◽  
Runoff Reduction ◽  
Runoff Change ◽  
Significant Downward Trend

Runoff reduction in most river basins in China has become a hotpot in recent years. The Gushanchuan river, a primary tributary of the middle Yellow river, Northern China, showed a significant downward trend in the last century. Little is known regarding the relative contributions of changing environment to the observed hydrological trends and response on the runoff generation process in its watershed. On the basis of observed hydrological and meteorological data from 1965–2010, the Mann-Kendall trend test and climate elasticity method were used to distinguish the effects of climate change and human activities on runoff in the Gushanchuan basin. The results indicate that the runoff in the Gushanchuan Basin has experienced significant declines as large as 77% from 1965 to 2010, and a mutation point occurred around 1997; the contribution rate of climate change to runoff change is 12.9–15.1%, and the contribution rate of human activities to runoff change is 84.9–87.1%. Then we divided long-term data sequence into two stages around the mutation point, and analyzed runoff generation mechanisms based on land use and cover changes (LUCC). We found that the floods in the Gushanchuan Basin were still dominated by Excess-infiltration runoff, but the proportion in 1965–1997 and 1998–2010 decreased gradually (68.46% and 45.83% in turn). The proportion of Excess-storage runoff and Mixed runoff has increased, which means that the runoff is made up of more runoff components. The variation law of the LUCC indicates that the forest area increased by 49.61%, the confluence time increased by 50.42%, and the water storage capacity of the watershed increased by 30.35%.

Assessing the relative role of climate change and human activities in sandy desertification of Ordos region, China

2009 ◽  
Vol 52 (6) ◽  
pp. 855-868 ◽  
Author(s):  
DuanYang Xu ◽  
XiangWu Kang ◽  
ZhiLi Liu ◽  
DaFang Zhuang ◽  
JianJun Pan
Keyword(s):  
Climate Change ◽  
Human Activities ◽  
Relative Role ◽  
Sandy Desertification

scholarly journals Relative Contribution of the Xiaolangdi Dam to Runoff Changes in the Lower Yellow River

Land ◽  
2021 ◽  
Vol 10 (5) ◽  
pp. 521
Author(s):  
Qinghe Zhao ◽  
Shengyan Ding ◽  
Xiaoyu Ji ◽  
Zhendong Hong ◽  
Mengwen Lu ◽  
...  
Keyword(s):  
Climate Change ◽  
Human Activities ◽  
Sustainable Management ◽  
Yellow River ◽  
Dam Construction ◽  
Regulated Rivers ◽  
Flood Season ◽  
Abrupt Changes ◽  
Runoff Changes ◽  
Seasonal Runoff

Human activities are increasingly recognized as having a critical influence on hydrological processes under the warming of the climate, particularly for dam-regulated rivers. To ensure the sustainable management of water resources, it is important to evaluate how dam construction may affect surface runoff. In this study, using Mann–Kendall tests, the double mass curve method, and the Budyko-based elasticity method, the effects of climate change and human activities on annual and seasonal runoff were quantified for the Yellow River basin from 1961–2018; additionally, effects on runoff were assessed after the construction of the Xiaolangdi Dam (XLD, started operation in 2001) on the Yellow River. Both annual and seasonal runoff decreased over time (p < 0.01), due to the combined effects of climate change and human activities. Abrupt changes in annual, flood season, and non-flood season runoff occurred in 1986, 1989, and 1986, respectively. However, no abrupt changes were seen after the construction of the XLD. Human activities accounted for much of the reduction in runoff, approximately 75–72% annually, 81–86% for the flood season, and 86–90% for the non-flood season. Climate change approximately accounted for the remainder: 18–25% (annually), 14–19% (flood season), and 10–14% (non-flood season). The XLD construction mitigated runoff increases induced by heightened precipitation and reduced potential evapotranspiration during the post-dam period; the XLD accounted for approximately 52% of the runoff reduction both annually and in the non-flood season, and accounted for approximately −32% of the runoff increase in the flood season. In conclusion, this study provides a basic understanding of how dam construction contributes to runoff changes in the context of climate change; this information will be beneficial for the sustainable management of water resources in regulated rivers.

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