An Investigation into the Viability of Portable Proximal Sensor X-Ray Fluorescence Data for Assessing Heavy Metal Contamination in Urban Soils: A Case Study in Changchun, China

Toxics, Journal Year: 2024, Volume and Issue: 12(11), P. 798 - 798

Published: Oct. 31, 2024

In order to validate the applicability of pXRF for rapid in situ detection heavy metals urban soils and accurately obtain an assessment soil quality Changchun, a city northeast China, 164 samples from within main area Changchun were collected analysis. The stable elements Si Ti used establish matrix effect correction model, values Cr (64.2 mg⋅kg

Language: Английский

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Unveiling the Spatial Variability of Soil Nutrients in Typical Karst Rocky Desertification Areas

Water, Journal Year: 2024, Volume and Issue: 16(23), P. 3346 - 3346

Published: Nov. 21, 2024

Soil nutrients are essential for plant survival, especially in karst regions where soil erosion is a significant threat, leading to ecosystem degradation. Rocks exposed these areas contribute fragmented coverage and the complex spatial distribution of nutrients, hindering vegetation recovery. In this study, we collected 60 samples (0–30 cm deep) from typical rocky desertification slope. Classical statistics geostatistics were used assess variability following key properties: organic carbon (SOC), total nitrogen (TN), phosphorus (TP), potassium (TK). The study mapped continuous surface using ordinary kriging method analyze results showed that, except bulk density porosity, which little variation, other characteristics had moderate high levels variability. SOC, TN, TP decreased with depth, while TK content increased depth. Each layer has strong autocorrelation its SOC. decreases indicating autocorrelation. 0–10 layer, SOC displays highest level continuity, TN exhibiting higher compared nutrients. Within 10–20 TP, all exhibit Moving 20–30 structural most pronounced. correlation between properties was not strong, only cumulative explanatory power 11.81% first two axes redundancy analysis (RDA). Among them, silt impact on Studying crucial improving quality promoting restoration.

Language: Английский

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Climate Change and Prosopis Juliflora: Impact on Rangelands in the Afar Region, Ethiopia: A Review

American Journal of Environmental Protection, Journal Year: 2024, Volume and Issue: 13(6), P. 175 - 185

Published: Nov. 22, 2024

This literature review examines the dual impact of climate change and invasive species Prosopis juliflora on rangelands in Afar Region Ethiopia. Climate has intensified environmental stressors this arid region, leading to increased temperatures erratic rainfall patterns, which threaten productivity rangelands. Concurrently, juliflora, an introduced for reforestation, spread aggressively across these rangelands, exacerbating land degradation. The synthesizes current research ecological socio-economic effects invasion, including its soil properties, water resources, livestock productivity. It also explores how may enhance creating a feedback loop that further degrades rangeland ecosystems. Despite existing management strategies, such as mechanical removal chemical treatments, their effectiveness been limited. identifies significant gaps emphasizes need integrated approaches address both species. Sustainable strategies are crucial mitigating combined threats Region's supporting livelihoods local pastoral communities.

Language: Английский

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Exploring soil pedogenesis through frequency-dependent magnetic susceptibility in varied lithological environments

Euro-Mediterranean Journal for Environmental Integration, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 18, 2024

Abstract The use of percent frequency-dependent magnetic susceptibility (χfd%) is well-established for detecting superparamagnetic (SP) components in fine-grained soils and sediments. This study employs χfd% as a direct indicator pedogenetic processes from the Moroccan Rif region. Three soil transects (T1, T2, T3), each comprising four cores with depths reaching 100 to 120 cm, were sampled distinct lithological formations within an area subject moderate intense erosion. A total 272 samples collected analyzed using MS2 Bartington Instruments, providing values calculate identify ultrafine ferrimagnetic minerals (SP, < 0.03 μm). In Quaternary fluvial terraces (T1) soils, approximately 60% indicate mixture SP, multidomain (MD), Single Stable Domain (SSD) grains, while 30% contained coarser MD grains. Only 10% exhibit predominantly Soils on marly substrates (T2) showed 90% combination MD, SSD, just had SP contrast, Villafranchian sandy deposits displayed exceeding over 50% samples, indicating that almost all iron consist Physico-chemical analyses profiles T1, T3 reveal characteristics, including variations clay content, organic matter, nutrient levels, proportions free iron. These results are important understanding evolution pedogenesis, T1 showing advanced development marked by high mineral iron, clay, matter content. profile T2 reflects weak stage, influencing availability contributing overall dynamics respective profiles. this suggest susceptibilities these primarily originate sources, revealing significantly pedogenesis compared soils. findings align previous research erosion degradation region, demonstrating developed more degraded less stable than those substrates. underscores utility rapid effective initial assessment gauging degree pedogenesis.

Language: Английский

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