نتایج جستجو برای: potential ecological risk

تعداد نتایج: 1990348  

Journal: :Sustainability 2023

This study examined the spatio-temporality of heavy metal concentrations (Al, Cd, Co, Cr, Fe, Mn, Ni, Pb and Zn) in sediments Lake Bafa, one most important wetlands Turkey’s Aegean region. The evaluated sediment quality according to threshold effect concentration (TEC) probable (PEC) values based on guidelines (SQG), provided a potential ecological risk assessment (PERI) along with indices such...

Journal: :Earth and Space Science 2021

The present study seeks to both estimate and analyze the rate of heavy metal changes in soils road margins affected by traffic on Fasa-Darab Road, Iran. Muller index, contamination factor (CF), Geoaccumulation index (Igeo), potential ecological risk (PERI), pollution load (PLI) were calculated determine rate. Principal component analysis was also employed most relevant parameters affecting PERI...

Journal: :Ecological processes 2023

Abstract Background Predicting the potential habitat of Phytolacca americana, a high-risk invasive species, can help provide scientific basis for its quarantine and control strategies. Using optimized MaxEnt model, we applied latest climate data, CMIP6, to predict distribution risk zones their change patterns P . americana under current future (SSP126, SSP245, SSP585) conditions, followed by in...

Journal: :Acta Environmentalica Universitatis Comenianae 2016

2011
Sharlene E. Sing Robert K. D. Peterson

Environmental risk assessments characterizing potential environmental impacts of exotic weeds are more abundant and comprehensive for potential or new invaders than for widespread and well-established species such as Dalmatian (Linaria dalmatica [L.] Mill.) and yellow (L. vulgaris Mill.) toadflax. Specific effects evaluated in our assessment of environmental risks posed by yellow and Dalmatian ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه سیستان و بلوچستان - دانشکده مهندسی عمران 1392

abstract in aggregate, active forms of reactive silica with mineral names are sometimes associated with sand and gravel in concrete mixture. alkali hydroxides originated from alkalis in the cement or other resources form an alkaline silica gel with this reactive silica which becomes swallowed and expanded during time causing damage to concrete. there have been growing researches on alkaline r...

2017
Yanhong Zhang Shujun Ye Jichun Wu Ralph G. Stahl

China has recognized the need to investigate and remediate former manufacturing facilities and return the land they occupy to a new, productive use. As a result, national guidelines entitled “Technical guidelines for Risk assessment of contaminated sites” were issued in 2014 to guide site investigations, risk assessments, and remedial actions to reduce or mitigate potential exposures of people ...

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