Spatio-temporal non-uniformity of urban park greenness and thermal characteristics in a semi-arid region

2018 ◽  
Vol 34 ◽  
pp. 44-54 ◽  
Author(s):  
Iryna Dronova ◽  
Mirit Friedman ◽  
Ian McRae ◽  
Fanhua Kong ◽  
Haiwei Yin
Keyword(s):  
Arid Region ◽  
Thermal Characteristics ◽  
Urban Park ◽  
Spatio Temporal ◽  
Semi Arid Region ◽  
Semi Arid

scholarly journals Spatio-Temporal Response of Vegetation Indices to Rainfall and Temperature in A Semiarid Region

2020 ◽  
Vol 12 (5) ◽  
pp. 1939 ◽  
Author(s):  
Edith Olmos-Trujillo ◽  
Julián González-Trinidad ◽  
Hugo Júnez-Ferreira ◽  
Anuard Pacheco-Guerrero ◽  
Carlos Bautista-Capetillo ◽  
...  
Keyword(s):  
Arid Region ◽  
Climatic Factors ◽  
Time Lag ◽  
Vegetation Indices ◽  
Climatic Variables ◽  
Semiarid Region ◽  
Linear Regression Models ◽  
Spatio Temporal ◽  
Semi Arid Region ◽  
Semi Arid

In this research, vegetation indices (VIs) were analyzed as indicators of the spatio-temporal variation of vegetation in a semi-arid region. For a better understanding of this dynamic, interactions between vegetation and climate should be studied more widely. To this end, the following methodology was proposed: (1) acquire the NDVI, EVI, SAVI, MSAVI, and NDMI by classification of vegetation and land cover categories in a monthly period from 2014 to 2018; (2) perform a geostatistical analysis of rainfall and temperature; and (3) assess the application of ordinary and uncertainty least squares linear regression models to experimental data from the response of vegetation indices to climatic variables through the BiDASys (bivariate data analysis system) program. The proposed methodology was tested in a semi-arid region of Zacatecas, Mexico. It was found that besides the high values in the indices that indicate good health, the climatic variables that have an impact on the study area should be considered given the close relationship with the vegetation. A better correlation of the NDMI and EVI with rainfall and temperature was found, and similarly, the relationship between VIs and climatic factors showed a general time lag effect. This methodology can be considered in management and conservation plans of natural ecosystems, in the context of climate change and sustainable development policies.

Understanding spatio‐temporal rainfall‐runoff changes in a semi‐arid region.

2020 ◽  
Author(s):  
Santosh K Aryal ◽  
Richard P Silberstein ◽  
Guobin Fu ◽  
Geoff Hodgson ◽  
Stephen P Charles ◽  
...  
Keyword(s):  
Arid Region ◽  
Rainfall Runoff ◽  
Runoff Changes ◽  
Spatio Temporal ◽  
Semi Arid Region ◽  
Semi Arid

Spatio-temporal dynamics of land use changes of an intense anthropized basin in the Brazilian semi-arid region

2021 ◽  
pp. 100646
Author(s):  
Maria da Conceição de Sousa ◽  
Gustavo Vieira Veloso ◽  
Lucas Carvalho Gomes ◽  
Elpidio Inácio Fernandes-Filho ◽  
Teógenes Senna de Oliveira
Keyword(s):  
Land Use ◽  
Arid Region ◽  
Temporal Dynamics ◽  
Land Use Changes ◽  
Spatio Temporal ◽  
Semi Arid Region ◽  
Semi Arid

Spatio-temporal monitoring of soil and plant indicators under forage cactus cultivation by geoprocessing in Brazilian semi-arid region

2021 ◽  
Vol 107 ◽  
pp. 103155
Author(s):  
Marcos Vinícius da Silva ◽  
Héliton Pandorfi ◽  
Gledson Luiz Pontes de Almeida ◽  
Renato Paiva de Lima ◽  
Anderson dos Santos ◽  
...  
Keyword(s):  
Arid Region ◽  
Spatio Temporal ◽  
Semi Arid Region ◽  
Semi Arid

Spatio-temporal variation in a seed bank of a semi-arid region in northeastern Brazil

2013 ◽  
Vol 46 ◽  
pp. 25-32 ◽  
Author(s):  
Kleber A. da Silva ◽  
Danielle M. dos Santos ◽  
Josiene M.F.F. dos Santos ◽  
Ulysses P. de Albuquerque ◽  
Elba M.N. Ferraz ◽  
...  
Keyword(s):  
Temporal Variation ◽  
Seed Bank ◽  
Arid Region ◽  
Northeastern Brazil ◽  
Spatio Temporal ◽  
Semi Arid Region ◽  
Semi Arid

Investigation of spatio-temporal patterns of seasonal streamflow droughts in a semi-arid region

2013 ◽  
Vol 69 (3) ◽  
pp. 1697-1720 ◽  
Author(s):  
Samane Saadat ◽  
Davar Khalili ◽  
Ali Akbar Kamgar-Haghighi ◽  
Shahrokh Zand-Parsa
Keyword(s):  
Arid Region ◽  
Temporal Patterns ◽  
Spatio Temporal ◽  
Semi Arid Region ◽  
Seasonal Streamflow ◽  
Semi Arid

The Molecular Characterization and Biological Assessment of the Leaves Extracts of Loofah Reveal their Nutraceutical Potential

2020 ◽  
Vol 11 ◽  
Author(s):  
Takoua Ben Hlel ◽  
Feten Belhadj ◽  
Fatih Gül ◽  
Muhammed Altun ◽  
Ayşe Şahin Yağlıoğlu ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Phenolic Compounds ◽  
Hela Cell ◽  
Arid Region ◽  
Biological Properties ◽  
Biological Assessment ◽  
Omega 3 ◽  
Hela Cell Lines ◽  
Semi Arid Region ◽  
Semi Arid

Background:: Luffa cylindrica is a plant that is widely distributed in Africa and Asia and it can be grown in regions with tropical or subtropical climates. Few patents dealt with Loofah biological properties, including some functional foods formulated from its leaves. Objective:: This study aimed to structurally and functionally characterize the bioactive compounds of L. cylindrica leaves grown in two different environments. Methods:: The extracts of L. cylindrica leaves collected from two Tunisian locations: Essouasi (LE), a semi-arid region and Medenine (LM) an arid region, were investigated for their phenolic compounds and fatty acids using HPLC/TOF-MS and GCMS techniques respectively. Furthermore, the antioxidant capacity was evaluated with DPPH, Chelating effect, Hydroxyl radical and Superoxide anion scavenging activities while the anticancer activity against HeLa cell lines was assessed using xCELLigence real time cell analyzer and lactate dehydrogenase cytotoxicity assay. Results:: The antiproliferative capacity of both extracts was time and dose-dependent with LE presenting the lowest HeLa cell index (CI = 0.035 ± 0.018, 250 μg/ml). LE also showed the best cytotoxic capacity (56.49 ± 0.8%) and antioxidant potential (IC50 = 54.41 ± 1.12 μg/ml for DPPH and 12.12 ± 0.07 μg/ml for chelating effet). 14 phenolic compounds were detected in LE with ferulic acid being the major compound (5128.5 ± 4.09 μg Phenols/g) while LM had only 6 phenolics. GCMS analysis showed the presence of omega-3 fatty acids in LE. Conclusions:: Our findings suggest that L. cylindrica leaves, especially when collected from semi-arid regions, are promising for formulating nutraceuticals of interest.

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