Exploring the relationship between vegetation spectra and eco-geo-environmental conditions in karst region, Southwest China

2008 ◽  
Vol 160 (1-4) ◽  
pp. 157-168 ◽  
Author(s):  
Yuemin Yue ◽  
Kelin Wang ◽  
Bing Zhang ◽  
Zhengchao Chen ◽  
Quanjun Jiao ◽  
...  
Keyword(s):  
Environmental Conditions ◽  
Southwest China ◽  
Karst Region ◽  
The Relationship

scholarly journals Relationship of Abrupt Vegetation Change to Climate Change and Ecological Engineering with Multi-Timescale Analysis in the Karst Region, Southwest China

2019 ◽  
Vol 11 (13) ◽  
pp. 1564 ◽  
Author(s):  
Xiaojuan Xu ◽  
Huiyu Liu ◽  
Zhenshan Lin ◽  
Fusheng Jiao ◽  
Haibo Gong
Keyword(s):  
Climate Change ◽  
Southwest China ◽  
Abrupt Change ◽  
Karst Region ◽  
The West ◽  
Term Trend ◽  
Relationship Of ◽  
The Relationship ◽  
Long Term Trend

Vegetation is known to be sensitive to both climate change and anthropogenic disturbance in the karst region. However, the relationship between an abrupt change in vegetation and its driving factors is unclear at multiple timescales. Based on the non-parametric Mann-Kendall test and the ensemble empirical mode decomposition (EEMD) method, the abrupt changes in vegetation and its possible relationships with the driving factors in the karst region of southwest China during 1982–2015 are revealed at multiple timescales. The results showed that: (1) the Normalized Difference Vegetation Index (NDVI) showed an overall increasing trend and had an abrupt change in 2001. After the abrupt change, the greening trend of the NDVI in the east and the browning trend in the west, both changed from insignificant to significant. (2) After the abrupt change, at the 2.5-year time scale, the correlation between the NDVI and temperature changed from insignificantly negative to significantly negative in the west. Over the long-term trend, it changed from significantly negative to significantly positive in the east, but changed from significantly positive to significantly negative in the west. The abrupt change primarily occurred on the long-term trend. (3) After the abrupt change, 1143.32 km2 farmland was converted to forests in the east, and the forest area had significantly increased. (4) At the 2.5-year time scale, the abrupt change in the relationships between the NDVI and climate factors was primarily driven by climate change in the west, especially rising temperatures. Over the long-term trend, it was caused by ecological protection projects in the east, but by rising temperatures in the west. The integration of the abrupt change analysis and multiple timescale analysis help assess the relationship of vegetation changes with climate changes and human activities accurately and comprehensively, and deepen our understanding of the driving mechanism of vegetation changes, which will further provide scientific references for the protection of fragile ecosystems in the karst region.

Nonlinear characteristics of the vegetation change and its response to climate change in the karst region of southwest China

2021 ◽  
pp. 030913332110662
Author(s):  
Mingyang Zhang ◽  
Zhenhua Deng ◽  
Yuemin Yue ◽  
Kelin Wang ◽  
Huiyu Liu ◽  
...  
Keyword(s):  
Climate Change ◽  
Vegetation Change ◽  
Southwest China ◽  
Abrupt Change ◽  
Ecological Engineering ◽  
Karst Region ◽  
Vegetation Changes ◽  
Nonlinear Characteristics ◽  
Relationship Of ◽  
The Relationship

The vegetation is known to be sensitive to both climate change and anthropogenic disturbance. However, the relationship between changes in vegetation and climate is unclear in karst regions. The nonlinear characteristics of vegetation change and its possible relationships with driving factors in the karst region of southwest China are revealed, using methods of Ensemble Empirical Mode Decomposition, Mann-Kendall, and Partial Least Squares Regression. The results show that: (1) vegetation changes demonstrate an increasing trend with an abrupt change in 2002. Multiple time scales of 3, 6, 10, and 25-year are observed in vegetation variations, dominated by long-term trend and the short time scale of 3-year with variance contributions of 58.10% and 28.63%. (2) The relationship of climate indexes with vegetation changes shows r2 = 0.78 ( p < 0.01) based on the reconstruction of characteristic scales, indicating significant great relationship. In space, the area percentage with relationship of climate to vegetation is more than 50%, and the impact is much greater after the abrupt change of vegetation in 2002 ( r2 are 0.24–0.91 and 0.42–0.99, respectively). In addition, the correlation between vegetation change and ecological engineering is 0.15 ( p < 0.01). The results indicate that climate change is the main impact factor of vegetation change, ecological engineering has positive influences in improving vegetation condition, and methods of scales decomposition and abrupt detection could reveal some hidden information for better understanding ecosystems in karst regions.

scholarly journals Individual quality of life and the environment – towards a concept of livable areas for persons with disabilities in Poland

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Izabela Grabowska ◽  
Radosław Antczak ◽  
Jan Zwierzchowski ◽  
Tomasz Panek
Keyword(s):  
Quality Of Life ◽  
Environmental Conditions ◽  
Basic Research ◽  
Research Problem ◽  
Individual Characteristics ◽  
Living Conditions ◽  
Special Focus ◽  
Persons With Disabilities ◽  
The Relationship

Abstract Background The United Nations Convention on the Rights of Persons with Disabilities [1] highlights the need to create proper socioeconomic and political conditions for persons with disabilities, with a special focus on their immediate living conditions. According to the Convention, these conditions should be built to ensure that persons with disabilities have the potential to enjoy a high quality of life (QoL), and this principle is reflected in the notion of livable areas. The crucial aspect of this framework is the relationship between the individual QoL and the environment, broadly understood as the socioeconomic as well as the technical conditions in which persons with disabilities function. Methods The basic research problem was to assess the relationship between individual QoL for the population with disabilities as a dependent variable and livability indicators as independent variables, controlling for individual characteristics. The study used a dataset from the EU-SILC (European Union Statistics on Income and Living Conditions) survey carried out in 2015 in Poland. The research concept involved several steps. First, we created a variable measuring the QoL for the entire population with disabilities. To measure the multidimensional QoL, we used Sen’s capability approach as a general concept, which was operationalized by the MIMIC (multiple indicators multiple causes) model. In the second step, we identified the livability indicators available in the official statistics, and merged them with survey data. Finally, in the last step, we ran the regression analysis. We also checked the data for the nested structure. Results We confirmed that the general environmental conditions, focused on creating livable areas, played a significant role in shaping the QoL of persons with disabilities; i.e., we found that the higher the level of the local Human Development Index, the higher the quality of life of the individuals living in this area. This relationship held even after controlling for the demographic characteristics of the respondents. Moreover, we found that in addition to the general environmental conditions, the conditions created especially for persons with disabilities (i.e., services for this group and support for their living conditions) affected the QoL of these individuals. Conclusions The results illustrate the need to strengthen policies aimed at promoting the QoL of persons with disabilities by creating access to community assets and services that can contribute to improving the life chances of this population.

Relationship between psychological suzhi and internet addiction among chinese college students

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Yuan-yan Hu ◽  
Peng Wang ◽  
Xin-qiang Wang ◽  
Tian-qiang Hu
Keyword(s):  
College Students ◽  
Internet Addiction ◽  
North China ◽  
Southwest China ◽  
Significant Negative Correlation ◽  
Hierarchical Regression ◽  
Content Type ◽  
Chinese College Students ◽  
College Sample ◽  
The Relationship

Purpose Despite concerns about the effect of internet addiction, little is known about how psychological suzhi impacts the internet addiction of college students. This paper aims to investigate the relationship between psychological suzhi and internet addiction among college students. Design/methodology/approach Using the college student psychological suzhi scale and internet addiction test, 2,070 college students from 11 universities in North China, East China, South China and Southwest China were tested. Findings The detection rate of internet addiction in this college sample of students was 18.8%. There was a significant negative correlation between students’ psychological suzhi and internet addiction (r = −0.408, p < 0.01). Hierarchical regression analysis showed that adaptability and individuality in psychological suzhi significantly negatively predicted college students’ internet addiction tendency (p < 0.001). Originality/value This study is the first to show a relationship between psychological suzhi and internet addiction in college students. In detail, the adaptability and individuality of college students’ psychological suzhi are protective factors related to internet addiction. The results also suggested that the authors can prevent and intervene in internet addiction by modifying college students’ adaptability and individuality.

Spatiotemporally mapping of the relationship between NO2 pollution and urbanization for a megacity in Southwest China during 2005–2016

Chemosphere ◽  
2019 ◽  
Vol 220 ◽  
pp. 155-162 ◽  
Author(s):  
Yijing Zhu ◽  
Yu Zhan ◽  
Bin Wang ◽  
Zhi Li ◽  
Yuanqing Qin ◽  
...  
Keyword(s):  
Southwest China ◽  
The Relationship ◽  
No2 Pollution

scholarly journals Sistem Informasi Mobile Kosan Berbasis Android

2020 ◽  
Vol 4 (1) ◽  
pp. 17
Author(s):  
Amirudin Wibowo
Keyword(s):  
Environmental Conditions ◽  
Mutual Cooperation ◽  
Permanent Housing ◽  
Facilities Location ◽  
Boarding House ◽  
Local Residents ◽  
The Relationship ◽  
Modern Era ◽  
Increased Activity ◽  
Selection Of

The increasing number of residents coming from outside Jabodetabek has resulted in increased activity in the Jabodetabek area. Generally newcomers are reluctant to have permanent housing but prefer semi-permanent buildings such as boarding houses, so that newcomers make boarding houses a flexible place to live. What must be considered in the selection of boarding houses in addition to the available prices and facilities is also because if newcomers want to find a boarding house must see the distance so they can estimate how much time the boarding house goes to the intended place such as campus or office harmed as well as environmental conditions so as to create a comfortable and peaceful atmosphere. Newcomers must be able to socialize with local residents so that harmony can be maintained, for example following a mutual cooperation activity held once a month to strengthen the relationship. One that makes it easier for newcomers to find a boarding house is to make a mobile android based application considering that it is quite fast in this modern era, the access can easily be done anywhere and whenever needed. The information needed is the name of the owner of the boarding house, room data. facilities, location and price..

Fluid Balance, Carbohydrate Ingestion, and Body Temperature During Men’s Stage-Race Cycling in Temperate Environmental Conditions

2014 ◽  
Vol 9 (3) ◽  
pp. 575-582 ◽  
Author(s):  
Megan L. Ross ◽  
Brian Stephens ◽  
Chris R. Abbiss ◽  
David T. Martin ◽  
Paul B. Laursen ◽  
...  
Keyword(s):  
Environmental Conditions ◽  
Fluid Intake ◽  
Strong Correlations ◽  
Event Duration ◽  
Carbohydrate Ingestion ◽  
Before And After ◽  
Road Cyclists ◽  
New Guidelines ◽  
The Relationship ◽  
Current Guidelines

Purpose:To observe voluntary fluid and carbohydrate intakes and thermoregulatory characteristics of road cyclists during 2 multiday, multiple-stage races in temperate conditions.Methods:Ten internationally competitive male cyclists competed in 2 stage races (2009 Tour of Gippsland, T1, n = 5; 2010 Tour of Geelong, T2, n = 5) in temperate conditions (13.2–15.8°C; 54–80% relative humidity). Body mass (BM) was recorded immediately before and after each stage. Peak gastrointestinal temperature (TGI peak) was recorded throughout each stage. Cyclists recalled the types and volumes of fluid and food consumed throughout each stage.Results:Although fluid intake varied according to the race format, there were strong correlations between fluid intake and distance across all formats of racing, in both tours (r = .82, r = .92). Within a stage, the relationship between finishing time and fluid intake was trivial. Mean BM change over a stage was 1.3%, with losses >2% BM occurring on 5 out of 43 measured occasions and the fastest competitors incurring lower BM changes. Most subjects consumed carbohydrate at rates that met the new guidelines (30–60 g/h for 2–3 h, ~90 g/h for >3 h), based on event duration. There were consistent observations of TGI peak >39°C during stages of T1 (67%) and T2 (73%) despite temperate environmental conditions.Conclusion:This study captured novel effects of highintensity stage racing in temperate environmental conditions. In these conditions, cyclists were generally able to find opportunities to consume fluid and carbohydrate to meet current guidelines. We consistently observed high TGI peak, which merits further investigation.

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