Article
Environmental Sciences
Ziguan Wang, Guanghui Zhang, Chengshu Wang, Shukun Xing
Summary: In this study, gully morphological characteristics were accurately measured and the topographic threshold was determined using UAV technology combined with field measurement. The results showed a high accuracy of gully characteristic extraction from UAV images, with significant relationships found between gully volume and other parameters. The findings are helpful for rapidly estimating gully erosion and identifying areas for gully erosion mitigation in small watersheds.
Article
Geosciences, Multidisciplinary
Linlin Cui, Xiao Li, Jie Lin, Geng Guo, Xiang Zhang, Guangruo Zeng
Summary: Water erosion has a significant impact on soil erosion intensity, and special terrains like gullies are often overlooked. This study investigates the effect of water erosion on carbon mineralization and finds that soil erosion intensity is positively correlated with cumulative mineralization of SOC. Soil macroaggregates play a significant role in SOC mineralization.
Article
Ecology
Ginjo Gitima, Menberu Teshome, Meseret Kassie, Monika Jakubus
Summary: Soil erosion in the Ethiopian highlands is closely related to land use/land cover changes, such as deforestation and declining biodiversity. This study used GIS and RUSLE model to quantify the impacts of spatiotemporal land use/land cover changes on soil loss in the Zoa watershed from 1985 to 2021. The results showed that the expansion of bareland and farmland has led to increased soil loss, with the highest rates observed in unprotected surfaces, steep slopes, and the lowland agroecology. Effective soil and water conservation measures are needed to reduce soil erosion hazards.
ECOLOGICAL PROCESSES
(2023)
Article
Environmental Sciences
Aleksey Sidorchuk
Summary: The type of modelling of gully erosion for land management projects depends on the targets, details, and input data availability. The set of four models cover a broad range of applications, with the most detailed being the gully erosion and thermoerosion dynamic model. The difficulty in obtaining certain coefficients necessitates the use of simpler models for some projects.
Article
Environmental Sciences
Shouhao Zhang, Lei Sun, Abdul Hakim Jamshidi, Yong Niu, Zhaofei Fan, Hongda Zhang, Xia Liu
Summary: Evaluation of sloping cropland degradation in black soil regions of China is crucial for sustainable land use. This study used bibliometrics and frequency analysis to identify high-frequency indicators and constructed an index set for evaluating the degree of sloping cropland degradation. The results showed that ridge-slope angle and slope gradient were the main factors affecting soil degradation, which manifested as worsened soil physicochemical characteristics and acidification.
LAND DEGRADATION & DEVELOPMENT
(2022)
Article
Environmental Sciences
Chenfeng Wang, Xudong Fu, Bin Wang, Zheng Gong, Ga Zhang, Xiaoping Wang
Summary: An improved hillslope erosion dynamic model (HED) based on sediment feedback mechanism was established and evaluated using field data from the Loess Plateau of China. The power function was found to accurately reproduce soil detachment and sediment transport capacities under varying field slope conditions. HED can be integrated into distributed watershed models for predicting sediment discharge within runoff events.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Geosciences, Multidisciplinary
Andres Penuela, Antonio Hayas, Juan Infante-Amate, Pablo Ruiz-Montes, Arnaud Temme, Tony Reimann, Adolfo Pena-Acevedo, Tom Vanwalleghem
Summary: The cultivation of cereal and olives has had a significant impact on soil erosion in southern Spain since human settlement. The study of two catchments revealed a strong connection between agricultural land management practices and soil erosion over the past seven millennia.
Article
Green & Sustainable Science & Technology
Snezana Jaksic, Jordana Ninkov, Stanko Milic, Jovica Vasin, Milorad Zivanov, Darko Jaksic, Vedrana Komlen
Summary: This study focused on the impact of topographic factors on the spatial distribution of soil organic carbon (SOC), revealing significant influences of slope aspect on SOC in different land use/cover classes. The results suggest that slope gradient plays a less significant role in determining SOC content in uncultivated land. The findings provide valuable insights for land management strategies in the context of sustainable development.
Article
Soil Science
Chengshu Wang, Guanghui Zhang, Pingzong Zhu, Ziguan Wang, Shukun Xing
Summary: The effects of gully development and vegetation restoration on sediment connectivity were investigated in a small watershed in the Loess Plateau. The study found that sediment connectivity decreased significantly due to rapid vegetation restoration. Additionally, gully development promoted sediment connectivity while vegetation restoration inhibited it.
Article
Plant Sciences
Lei Wang, Yan Li, Jiajun Wu, Zhizhuang An, Linna Suo, Jianli Ding, Shuo Li, Dan Wei, Liang Jin
Summary: The study found that slope gradients and rainfall intensities have a significant impact on soil erosion and nutrient loss. Rainfall intensities greater than 40 mm/h resulted in a doubling of the runoff coefficient increase, with the greatest increase observed at 0 degrees slope gradient. Slope surface runoff depth and rate were positively correlated with rainfall intensity and negatively correlated with slope gradient. Cumulative sediment yield was positively related to slope gradient and rainfall intensity. Additionally, nitrogen loss rates increased with higher rainfall intensities and slope gradients.
Article
Geosciences, Multidisciplinary
Yishan Liao, Zaijian Yuan, Dingqiang Li, Mingguo Zheng, Bin Huang, Zhenyue Xie, Xinliang Wu, Xuan Luo
Summary: This study analyzed the topography, hydrogeological conditions, number, and size of benggang in the Yuankengshui watershed (Guangdong, China) using unmanned aerial vehicle (UAV) aerial images. The study found that the number of benggang initially increased and then decreased with increasing elevation, slope gradient, and slope length, but decreased with increasing benggang catchment area. The formation and development of benggang were mainly affected by benggang catchment area and slope drop. Benggang is different from gully in various aspects and should be treated differently when adopting control measures.
Article
Multidisciplinary Sciences
Yu Wu, Jiejie Ji, Shunchao Qi, Xiekang Wang, Dong Li, Hongtao Li, Xingguo Yang, Qiang Yao
Summary: This study investigated the scouring process of debris flows in narrow-steep gullies. The experimental results showed that the debris flow formed a pit at the head of the gully, which enlarged through continuous impact. The flow velocity was significantly reduced after the pit, resulting in lesser scouring effects. The critical scour slope increased with debris flow density but decreased with grain size. The research provides important insights into the phenomena and mechanisms of debris flows in narrow-steep gullies.
SCIENTIFIC REPORTS
(2023)
Article
Geosciences, Multidisciplinary
Qiang Xu, Wanlin Chen, Kuanyao Zhao, Xiaopeng Zhou, Pengchuan Du, Chen Guo, Yuanzhen Ju, Chuanhao Pu
Summary: The study analyzed the impact of GLC and LC projects on soil erosion in the Loess Plateau, finding that the implementation of GLC project can have two effects on soil erosion, while the unreasonable hydraulic engineering of the LC project can cause large areas of soil erosion.
Article
Geosciences, Multidisciplinary
Pingzong Zhu, Guanghui Zhang, Chengshu Wang, Lili Wang
Summary: Land surface roughness (LSR) is greatly influenced by vegetation restoration, which alters near-soil surface characteristics, soil erosion intensity, and spatial heterogeneity. Different plant communities have significant effects on LSR variations on steep slopes, with vegetation types and characteristics playing a crucial role in influencing LSR.
Article
Environmental Sciences
Yuxian Wang, Yingying Xu, Huiying Yang, Huibo Shen, Lei Zhao, Baoguo Zhu, Jiangxu Wang, Lifeng Guo
Summary: In order to control slope erosion and protect black soil resources, this study aimed to investigate the law of soil erosion and the influence of soil structure units on erosion processes. The study used the LB method to determine soil aggregate stability parameters and erodibility K values based on particle size composition. By fitting the slope erosion rate along the slope length, it was found that a sinusoidal function fitting can better describe the periodic law of slope erosion rate in the black soil region. Results showed that the primary mechanism of black soil aggregate breakage is dissipation and mechanical disturbance, while damage caused by clay expansion is minimal.
FRONTIERS IN ENVIRONMENTAL SCIENCE
(2023)