Article
Geosciences, Multidisciplinary
Pu Li, Kuandi Zhang, Peng Ling, Luyou Zhao
Summary: In this study, the sediment transport capacity of three different soils was investigated through indoor experiments. The existing prediction models for sediment transport capacity were found to be inaccurate. However, more accurate equations were developed based on the data, improving the prediction accuracy.
Article
Environmental Sciences
Bing Wang, Pan-Pan Li, Chi-Hua Huang, Guo-Bin Liu, Yan-Fen Yang
Summary: Plant root systems play a crucial role in reducing soil erosion, with fibrous roots proving to be more effective in reducing soil detachment compared to tap roots. Root surface area density (RSAD) is identified as a primary root trait affecting soil detachment capacity, with a simple equation proposed for simulating soil detachment capacity when plant root parameters and soil properties are limited.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
Jingwen Wang, Chenye Gao, Xile Liu, Guangming Tan
Summary: This study developed a sediment transport capacity prediction model applicable to various soils through experiments and analysis. Results showed an exponential relationship between sediment transport capacity and flow intensity parameters, with effective stream power identified as the optimal predictor.
JOURNAL OF SOILS AND SEDIMENTS
(2022)
Article
Geosciences, Multidisciplinary
Jia-xin Liu, Bing Wang, Xing-wu Duan
Summary: Plant litter has a significant impact on soil detachment processes and can reduce soil detachment capacity. The temporal variation of soil detachment capacity is mainly affected by the development of a physical soil crust.
Article
Geosciences, Multidisciplinary
Xiqin Yan, Juying Jiao, Mengmeng Li, Hongkun Qi, Yue Liang, Qian Xu, Ziqi Zhang, Xiaohan Jiang, Jianjun Li, Zhixin Zhang, Haolin Wang
Summary: This research aimed to quantify the lateral sediment connectivity of landslides and explore its relationship with sediment yield in slope-channel cascades. By combining fieldwork and unmanned aerial vehicle techniques, the study found that the LCI of landslides was closely related to sediment yield after rainfall. Landslides have long-term impacts on sediment transport processes in the catchment.
Article
Soil Science
Nan Shen, Zhanli Wang, Qi Guo, Qingwei Zhang, Bing Wu, June Liu, Chunyan Ma, Claudio O. Delang, Fengbao Zhang
Summary: The study investigated soil detachment capacity by rill flow for five typical loess soils on the Loess Plateau of China, finding that SM sandy loess had the highest D-c value. Stream power was identified as the best hydrodynamic parameter to describe the process of soil detachment capacity by rill flow for these soils. The study revealed negative correlations between soil detachment capacity and soil cohesion and effective silt content, while positive correlations were found with effective median soil particle size and effective sand content. Multiple mathematical functions were proposed to model soil detachment capacity by rill flow for various hydraulic and soil conditions in the loess region, with high goodness of fit values.
SOIL & TILLAGE RESEARCH
(2021)
Article
Environmental Sciences
Ge Wu, Suhua Fu, Guiyun Zhou, Bing Yin
Summary: This study investigated the impact of Gully Land Consolidation (GLC) on soil erosion and sediment yield in a Chinese Loess Plateau watershed. The results showed that GLC effectively reduced soil erosion and sediment yield, with the greatest impact observed in wet years. The reduction in sediment yield was attributed to the lowered slope gradients and sediment connectivity after GLC.
LAND DEGRADATION & DEVELOPMENT
(2023)
Article
Geosciences, Multidisciplinary
Chengshu Wang, Guanghui Zhang
Summary: This study investigates the spatial variation in sediment connectivity and its influencing factors in small watersheds on the Loess Plateau using the index of connectivity (IC) and redundancy analysis (RDA). The results show that IC increases from south to north and the relationship between IC and environmental factors differs between different small watersheds. Vegetation and climate are found to be the main factors influencing the spatial variation in IC.
Article
Ecology
Masaru Sakai
Summary: Deer overpopulation globally leads to increased soil runoff into streams, resulting in higher levels of suspended sediment and fine sedimentation. While the effect of deer-induced fine sedimentation on macroinvertebrate communities in depositional habitats is known, the impact of drifting suspended sediment in erosional habitats remains unclear. This study compared habitat and macroinvertebrate community structures in first-to third-order streams between deer-excluded and grazed catchments in a Japanese headwater system. The results showed that fine sediment cover on the streambed was significantly higher in grazed catchments for first-order streams, while macroinvertebrate community structure differed between the deer-excluded and grazed catchments across all stream orders. These findings highlight the importance of hydro-geomorphological processes in assessing the restoration of forest-stream ecosystems, particularly in dynamic headwater systems.
ECOLOGICAL ENGINEERING
(2023)
Article
Environmental Sciences
Xiaoxiao Han, Jun Xiao, Lingqing Wang, Shuhan Tian, Tao Liang, Yujie Liu
Summary: Soil erosion is a serious eco-environmental issue, closely related to phosphorus loss. The combination of the USLE model and GIS technique is effective in predicting and assessing erosion, providing a scientific basis for reducing soil erosion and controlling phosphorus migration.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
Yu Fu, Dichen Wang, Wenping Sun, Mingming Guo
Summary: This study investigated the effects of planting density and its components (aboveground parts and roots) on slope runoff and soil erosion mechanisms. The results showed that grass significantly reduced the runoff rate, velocity, shear stress, stream power, and soil loss rate. The aboveground parts mainly contributed to the reduction in runoff rate and velocity, while the grass roots mainly contributed to the reduction in Reynolds number, shear stress, stream power, and soil loss rate. The findings of this study provide a scientific reference for vegetation restoration strategies.
LAND DEGRADATION & DEVELOPMENT
(2023)
Article
Agricultural Engineering
Jian-Fang Wang, Yan-Feng Yang, Bing Wang, Guo-Bin Liu, Jia-Ming Li
Summary: The effects of herbaceous plant root systems on soil erosion differ due to differences among plant species and root types. Plant species with tap root systems have higher soil detachment capacity, and pioneer species have significantly higher detachment capacity than late succession species.
BIOSYSTEMS ENGINEERING
(2022)
Article
Environmental Sciences
Wenzhao Guo, Yun Bai, Zhiqiang Cui, Wenlong Wang, Jianming Li, Zhengan Su
Summary: Loess-roads (LR) in watersheds on the Chinese Loess Plateau experience severe soil erosion due to concentrated flow during rainstorms. The study found that concentrated flow and slope gradient are key factors influencing road erosion, with rill density linearly correlated with total erosion on the LR.
LAND DEGRADATION & DEVELOPMENT
(2021)
Article
Soil Science
Youdong Cen, Kuandi Zhang, Yong Peng, Matteo Rubinato, Hongyang Zhang, Haixin Shang, Pu Li
Summary: Accurate estimation of mean velocity of overland flow is essential for soil erosion modeling. This study investigates the influence of gramineous plants in the Loess Plateau on the mean flow velocity and establishes a prediction model based on equivalent roughness and Manning's equation to improve accuracy. The results show that vegetation coverage and unit discharge affect the mean flow velocity, and the prediction model demonstrates good agreement with the experimental values.
Article
Engineering, Civil
Tao Zhang, Ailan Che
Summary: This study constructed cellular automata models based on three flow direction algorithms and divided soil erosion into inter-rill, rill, and gully erosions. The models were validated at different scales, and the results showed that the RAMFD model performed the best in the runoff ascension and recession stages. Furthermore, the RAMFD model exhibited sediment deposition in the upstream basin while the SFD and AMFD models showed continuous erosion. Overall, the RAMFD model had the best performance in balancing water distribution and controlling flow direction.
JOURNAL OF HYDROLOGY
(2023)
Article
Environmental Sciences
Toshimi Nakajima, Mao Kuragano, Makoto Yamada, Ryo Sugimoto
Summary: This study compared the contribution of submarine groundwater discharge (SGD) to river nutrient budgets at nearshore and embayment scales, and found that SGD-derived nutrients become more important at larger spatial scales.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Fan Liu, Lei Zhang, Chongyang Zhang, Ziguang Chen, Jingguang Li
Summary: NO2 emissions from wall-mounted gas stoves used for household heating have become a significant source of indoor pollution in Chinese urban areas. The high indoor concentration of NO2 poses potential health risks to residents. It is urgently necessary to establish relevant regulations and implement emission reduction technologies to reduce NO2 emissions from wall-mounted gas stoves.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Letter
Environmental Sciences
Hans Peter H. Arp, Raoul Wolf, Sarah E. Hale, Sivani Baskaran, Juliane Gluege, Martin Scheringer, Xenia Trier, Ian T. Cousins, Harrie Timmer, Roberta Hofman-Caris, Anna Lennquist, Andre D. Bannink, Gerard J. Stroomberg, Rosa M. A. Sjerps, Rosa Montes, Rosario Rodil, Jose Benito Quintana, Daniel Zahn, Herve Gallard, Tobias Mohr, Ivo Schliebner, Michael Neumann
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Philomina Onyedikachi Peter, Binessi Edouard Ifon, Francois Nkinahamira, Kayode Hassan Lasisi, Jiangwei Li, Anyi Hu, Chang-Ping Yu
Summary: This study investigates the relationship between dissolved organic matter (DOM) and Rare Earth Elements (REEs) in sediments from Yundang Lagoon, China. The results show four distinct fluorescent components, with protein-like substances being the most prevalent. Additionally, the total fluorescence intensity and LREE concentrations exhibit a synchronized increase from Outer to Inner to Songbai Lake core sediments. The findings demonstrate a strong correlation between DOM content and pollution levels.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Surya Gupta, Pasquale Borrelli, Panos Panagos, Christine Alewell
Summary: The objective of this study is to incorporate soil hydraulic properties into the erodibility factor (K) of USLE-type models. By modifying and improving the existing equations for soil texture and permeability, the study successfully included information on saturated hydraulic conductivity (Ksat) into the calculation of K factor. Using the Random Forest machine learning algorithm, two independent K factor maps with different spatial resolutions were generated. The results show that the decrease in K factor values has a positive impact on the modeling of soil erosion rates.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Jesmin Akter, Wendy J. M. Smith, Yawen Liu, Ilho Kim, Stuart L. Simpson, Phong Thai, Asja Korajkic, Warish Ahmed
Summary: The choice of workflow in wastewater surveillance has a significant impact on SARS-CoV-2 concentrations, while having minimal effects on HF183 and no effect on HAdV 40/41 concentrations. Certain components in the workflow can be interchangeable, but factors such as buffer type, chloroform, and homogenization speed can affect the recovery of viruses and bacteria.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Yu Luo, Xueting Yang, Diwei Wang, Hongmei Xu, Hongai Zhang, Shasha Huang, Qiyuan Wang, Ningning Zhang, Junji Cao, Zhenxing Shen
Summary: Atmospheric PM2.5, which can generate reactive oxygen species (ROS), is associated with cardiorespiratory morbidity and mortality. The study found that both the mass concentration of PM2.5 and the DTT activity were higher during the heating season than during the nonheating season. Combustion sources were the primary contributors to DTT activity during the heating season, while secondary formation dominated during the nonheating season. The study also revealed that biomass burning had the highest inherent oxidation potential among all sources investigated.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Erin L. Murphy, Leah R. Gerber, Chelsea M. Rochman, Beth Polidoro
Summary: Plastic pollution has devastating consequences for marine organisms. This study uses a trait-based framework to develop a vulnerability index for marine mammals, seabirds, and sea turtles in Hawai'i. The index ranks 63 study species based on their vulnerability to macroplastic pollution, providing valuable information for species monitoring and management priorities.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Kenji Maurice, Amelia Bourceret, Sami Youssef, Stephane Boivin, Liam Laurent-Webb, Coraline Damasio, Hassan Boukcim, Marc-Andre Selosse, Marc Ducousso
Summary: Growing pressure from climate change and agricultural land use is destabilizing soil microbial community interactions. Little is known about microbial community resistance and adaptation to disturbances, hindering our understanding of recovery latency and implications for ecosystem functioning. This study found that anthropic disturbance and natural disturbance have different effects on the topology and stability of soil microbial networks.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Yunhao Li, Yali Feng, Haoran Li, Yisong Yao, Chenglong Xu, Jinrong Ju, Ruiyu Ma, Haoyu Wang, Shiwei Jiang
Summary: Deep-sea mining poses a serious threat to marine ecosystems and human health by disturbing sediment and transmitting metal ions through the food chain. This study developed a new regenerative adsorption material, OMN@SA, which effectively removes metal ions. The adsorption mechanism and performance of the material for metal ion fixation were investigated.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Antonio Medici, Margherita Lavorgna, Marina Isidori, Chiara Russo, Elena Orlo, Giovanni Luongo, Giovanni Di Fabio, Armando Zarrelli
Summary: Valsartan, a widely used antihypertensive drug, has been detected in high concentrations in surface waters due to its unchanged excretion and incomplete degradation in wastewater treatment plants. This study investigated the degradation of valsartan and identified 14 degradation byproducts. The acute and chronic toxicity of these byproducts were evaluated in key organisms in the freshwater trophic chain.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Jiang Lin, Lianbao Chi, Qing Yuan, Busu Li, Mingbao Feng
Summary: This study investigated the photodegradation behavior and product formation of two representative pharmaceuticals in simulated estuary water. The study found that the formed transformation products of these pharmaceuticals have potential toxicity on marine organisms, including oxidative stress and damage to cellular components.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Hua Fang, Dongdong Jiang, Ye He, Siyi Wu, Yuehong Li, Ziqi Zhang, Haoting Chen, Zixin Zheng, Yan Sun, Wenxiang Wang
Summary: This study revealed that exposure to lower levels of air pollutants led to decreased pregnancy rates, with PM10, NO2, SO2, and CO emerging as the four most prominent pollutants. Individuals aged 35 and above exhibited heightened susceptibility to pollutants.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Ali Shaan Manzoor Ghumman, Rashid Shamsuddin, Amin Abbasi, Mohaira Ahmad, Yoshiaki Yoshida, Abdul Sami, Hamad Almohamadi
Summary: In this study, inverse vulcanized polysulfides (IVP) were synthesized by reacting molten sulfur with 4-vinyl benzyl chloride, and then functionalized using N-methyl D-glucamine (NMDG). The functionalized IVP showed a high mercury adsorption capacity and a machine learning model was developed to predict the amount of mercury removed. Furthermore, the functionalized IVP can be regenerated and reused, providing a sustainable and cost-effective adsorbent.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Rita Bonfiglio, Renata Sisto, Stefano Casciardi, Valeria Palumbo, Maria Paola Scioli, Erica Giacobbi, Francesca Servadei, Gerry Melino, Alessandro Mauriello, Manuel Scimeca
Summary: This study investigated the presence of aluminum in human colon cancer samples and its potential association with biological processes involved in cancer progression. Aluminum was found in tumor areas of 24% of patients and was associated with epithelial to mesenchymal transition (EMT) and cell death. Additional analyses revealed higher tumor mutational burden and mutations in genes related to EMT and apoptosis in aluminum-positive colon cancers. Understanding the molecular mechanisms of aluminum toxicity may improve strategies for the management of colon cancer patients.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)