Article
Agronomy
Michael Hofbauer, David Kincl, Jan Vopravil, David Kabelka, Petr Vrablik
Summary: This study analysed data from 82 rainfall simulations and found that SOC mitigated soil loss in locations with <14% slope inclination. However, in locations with >14% slope inclination, soil loss was driven by preferential erosion of fine-grained particles. The study also revealed that low soil loss was usually associated with high SOC enrichment, indicating that preferential erosion of SOC mainly occurred in soils with low erosion susceptibility. Therefore, soil conservation measures are important in all soil types to prevent erosion of SOC and maintain soil quality.
Article
Geosciences, Multidisciplinary
Alexandra Tiefenbacher, Gabriele Weigelhofer, Andreas Klik, Lionel Mabit, Jakob Santner, Walter Wenzel, Peter Strauss
Summary: This study investigated the impact of rainfall intensity and antecedent soil moisture on the transportation of dissolved and particulate organic carbon in surface and subsurface runoff. Results showed that under extreme weather conditions, most organic carbon was transported as particulate organic carbon via surface runoff, while dissolved organic carbon played a crucial role in subsurface runoff. The research provides insights into how flow partitioning affects organic carbon losses and poses risks for aquatic systems.
Article
Biodiversity Conservation
Dawid Kupka, Piotr Gruba
Summary: This study revealed that forest soils have different sorption capacities for DOC released from litter of different tree species under varying pH conditions, indicating the significant effects of soil pH and litter chemical composition on DOC stabilization.
ECOLOGICAL INDICATORS
(2022)
Article
Environmental Sciences
Katarzyna Sawicka, Joanna M. Clark, Elena Vanguelova, Don T. Monteith, Andrew J. Wade
Summary: This study found that acid deposition, sea-salt deposition, and soil sensitivity to acidification are the main factors influencing spatial variation in DOC concentrations in soil water. The research suggests that the type of vegetation cover and soil chemistry properties play a crucial role in the sensitivity of DOC release from soil.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
Rashida Hameed, Cheng Lei, Jing Fang, Daohui Lin
Summary: This study investigated the co-transport of biochar colloids and organic contaminants in soil, revealing that the enhancement effect of biochar colloids on contaminant transport decreased with increasing charring temperature or particle size of biochar colloids.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Engineering, Civil
Feng Wang, Jihui Gao
Summary: This study quantitatively investigated the impacts of PV panels on rainfall-runoff and soil erosion processes on a plot-scale slope through rainfall simulation experiments. The results showed that although the soil surface under the PV panel was rougher, there were no significant differences in runoff volume, peak flow discharge rate, and overland flow velocity between the panel slope and the control slope. However, the slope with the PV panel had significantly less sediment flux at the outlet, especially under heavy rainfall, due to the weakened splash erosion caused by the rainfall interception by the panel.
JOURNAL OF HYDROLOGY
(2023)
Article
Environmental Sciences
Julian Campo
Summary: Temperature has an impact on both erosion and carbon cycling in the soil. Recent studies have shown that with warming, the amount of soil organic carbon lost due to erosion increases, while the preservation of deposited carbon decreases, resulting in an overall increase in the carbon sink in croplands.
NATURE CLIMATE CHANGE
(2023)
Article
Geosciences, Multidisciplinary
Xuantian Li, Fengbao Zhang, Jiayan Yang, Mingyi Yang
Summary: This study investigated the impact of rainfall characteristics and slope length on the properties of sediment and organic carbon fractions in the soil erosion process. The results showed significant effects of rainfall characteristics and slope length on soil loss and organic carbon loss, especially in selective transport erosion processes.
Article
Environmental Sciences
Junqiu Lin, Nufang Fang, Yan Zhang, Yi Zeng, Daming Yang, Wei Dai, Ling Wang, Zhihua Shi
Summary: This study investigates the dynamics of soil organic carbon (SOC) related to splash erosion through simulated rainfall splash experiments. The results show uneven distribution and enrichment of SOC in different-sized aggregates. The enrichment ratio of SOC increases with splash distance, but decreases in large macroaggregates. The mobilization of SOC is mainly affected by the mass of aggregates.
JOURNAL OF SOILS AND SEDIMENTS
(2022)
Article
Biodiversity Conservation
Chonghua Xu, Xia Xu, Chenghui Ju, Han Y. H. Chen, Brian J. Wilsey, Yiqi Luo, Wei Fan
Summary: The study found that nitrogen addition significantly increased global SOC content, with the increase amplified over time in both organic and mineral soil layers. The increase mainly resulted from enhanced plant carbon input to soils coupled with reduced carbon loss from decomposition.
GLOBAL CHANGE BIOLOGY
(2021)
Article
Environmental Sciences
S. Kiran Kumar Reddy, Harish Gupta, Upendra Badimela, D. Venkat Reddy, Rama Mohan Kurakalva, Devender Kumar
Summary: The study investigated the POC contents of 70 sizeable tropical coastal rivers in the Western Ghats region of India, highlighting the significant influence of land-use, climate, and topography on the sources and transport characteristics of organic carbon.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
Artemi Cerd, Enric Terol, Ioannis N. Daliakopoulos
Summary: Alternative crop management practices, such as weed cover, have shown positive effects in reducing soil erosion and increasing soil organic matter content in olive orchards. Plantations with weed cover exhibited better soil quality and reduced water losses compared to those with traditional tillage.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
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
Soil Science
Tianjing Ren, Shengnan Tang, Tianfu Han, Bin Wang, Zhenghu Zhou, Guopeng Liang, Yu'e Li, Andong Cai
Summary: This study conducted a comprehensive meta-analysis to quantify the effects of the rhizosphere on soil carbon across global agroecosystems. The results showed that the rhizosphere had significantly higher soil organic carbon, dissolved organic carbon, and soil microbial biomass carbon compared to the bulk soil. The effects of the rhizosphere on different carbon fractions varied with climate zones, aridity indices, and crop types.
Article
Environmental Sciences
Edward Tipping, Jessica L. Elias, Patrick O. Keenan, Rachel C. Helliwell, Nikolai Pedentchouk, Richard J. Cooper, Sarah Buckingham, Egil Gjessing, Philippa Ascough, Charlotte L. Bryant, Mark H. Garnett
Summary: This study investigated the concentrations and properties of dissolved organic carbon (DOC) in rivers in relation to terrestrial source solutions at a global scale. The study found significant differences in DOC concentrations and properties among different terrestrial sources, which were explained by optimizing the simulated riverine variables and combinations of source waters. In rivers draining forests and grass-shrub land cover, most of the DOC comes from topsoil and subsoil, with a small contribution from groundwater. In cropland rivers, subsoil and groundwater are the dominant sources of DOC, while in wetland rivers, most of the DOC is from topsoil.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Geography, Physical
A. Securo, C. Del Gobbo, L. Rettig, S. Pillon, A. De Luca, D. Fontana, E. Benedetti Fasil, R. R. Colucci
Summary: Small glaciers in temperate mountain regions have experienced significant reduction and unprecedented melt rates in recent years. Some glaciers have transitioned from clean ice to debris-covered or even rock glaciers. This study examines the surface elevation change of the Popera Alto glacier in the Sesto Dolomites using LiDAR and Structure from Motion surveys, and analyzes its evolution in terms of surface cover and geomorphic processes. The glacier has lost an average of 0.35 m water equivalent per year over the past 16 years, with active modification of its surface cover by geomorphic processes. The role of debris and local topography feedback has allowed the resilience of the glacier, leading to a marked difference between the current environmental equilibrium line altitude (envELA) and the effective ELA (effELA) of the glacier.
Article
Geography, Physical
Zhenzhen Yan, Yaolin Shi, Lili Kang, Xiangtao Fan
Summary: This study proposes a quantitative regional deformation model based on global positioning system (GPS) data to quantitatively analyze the morphological evolution of rivers in the Three Rivers Region. It finds that tectonic deformation phases significantly control regional landscape development and drainage features.
Article
Geography, Physical
Said Mukhtar Ahmad, Nitheshnirmal Sadhasivam, Mona Lisa, Luigi Lombardo, Mustafa Kemal Emil, Amira Zaki, Cees J. Van Westen, Islam Fadel, Hakan Tanyas
Summary: In this study, we investigated a large slow-moving landslide in Northern Pakistan, using Interferometric Synthetic Aperture Radar (InSAR) analysis. Our results showed that the crown of the landslide is moving faster than the surrounding regions, while the footslope experienced high deformations. We discussed the possible roles of meteorologic and anthropogenic factors in causing these deformations.
Article
Geography, Physical
Shuang Bian, Xibin Tan, Yiduo Liu, Suoya Fan, Junfeng Gong, Chao Zhou, Feng Shi, Michael A. Murphy
Summary: The Yarlung River's drainage divide is primarily moving north due to variations in precipitation across the Himalayas. The Gangdese drainage divide shows predominantly northward and southward migration, controlled by base-level rise and downstream influences. The presence of north-trending rifts separates the drainage divides into five zones, each with a distinct migration pattern.
Article
Geography, Physical
Joon-Young Park, Seok Yoon, Deuk-Hwan Lee, Seung-Rae Lee, Hwan-Hui Lim
Summary: This study developed a multiple-regression model to estimate site-specific average growth rates of debris flow events. The proposed model was validated through a case study and showed reasonable predictions of debris flow velocities and heights.
Article
Geography, Physical
Nicholas Reilly Mccarroll, Arnaud Temme
Summary: New geochronological data from hillslope boulder armor in the Flint Hills reveal the rates and timing of lateral retreat in the landscape. Surfaces of limestone boulders dating back to the Pleistocene era were found, and the ages of the hillslope armor increased with distance from the limestone bench. The estimated rate of lateral retreat in this landscape is 0.02 mm/yr.
Article
Geography, Physical
Xinbo Yao, Yuntao Tian
Summary: By studying the Longmenshan-Minshan drainage divide, we found that it has reached a dynamic steady state, indicating a balance between erosion and rock uplift. This study also reveals the process of formation and evolution of the divide and raises questions about the effectiveness of divide migration metrics.
Article
Geography, Physical
Junhui Yu, Pin Yan, Yanlin Wang, Guangjian Zhong, Changliang Chen
Summary: The seafloor mounds in the Chaoshan Depression of the South China Sea are identified as mud volcanoes, with fluids coming from underlying mud-fluid diapirs. The hydrocarbon gases feeding the mud volcanoes and diapirs are reasoned to originate from deep Mesozoic source rocks, indicating significant Mesozoic hydrocarbon potential in the Chaoshan Depression.
Article
Geography, Physical
Marius Huber, Luc Scholtes, Jerome Lave
Summary: This paper investigates the relationships between hillslope stability and fabric anisotropy of brittle rock materials and the implications for landscape shaping. It explores the different stability modes and movement characteristics of anisotropic materials, and demonstrates the significant control of material anisotropy on landscape shaping.
Article
Geography, Physical
Shubhra Sharma, Anil D. Shukla
Summary: The study investigates the relationship between glacial dynamics and lake sedimentation during the mid-Holocene climate variability in the Southern Zanskar ranges. It utilizes geomorphological disposition, elemental geochemistry, and optical chronology of relict lake sediment to reconstruct the pattern of minor glacier responses to climate variability. The results indicate six centennial to millennial-scale climatic phases, with warmer phases represented by decreased mineralogical fine grain flux and increased coarse grain flux. The study highlights the potential of relict lake sediment and para/peri-glacial landforms in understanding glacial dynamics and climate change during the Holocene.
Article
Geography, Physical
Jean-Francois Bernier, Sydney W. Meury, Patrick Lajeunesse
Summary: In this study, an approach combining various data and observation methods was proposed to improve the monitoring of landfast ice dynamics and its geomorphic impact on sedimentary systems. The results demonstrate the ability of the approach to accurately measure interannual variations in landfast ice and constrain geomorphic changes. Additionally, the study found a strong relationship between the severity of freezing seasons and the response of landfast ice to hydrometeorological events, with different geomorphic responses observed under different winter conditions.
Article
Geography, Physical
Heping Shu, Fanyu Zhang
Summary: This study investigates the relationship between susceptibility of soil-water hazards and human activities, geoheritage sites in the Loess Plateau, China. Landslide and gully erosion susceptibility were obtained using gradient boosting and support vector machines, and a hazard matrix was formed to couple landslide and gully erosion susceptibility. The study found different trends in the magnification times of soil-water hazards chain under different scenarios.
Article
Geography, Physical
Guangqiang Qian, Zhuanling Yang, Xuegang Xing, Zhibao Dong, Youyuan Guo
Summary: Granule ripples are aeolian landforms armored against erosion by coarse grains. This study investigates their seasonal morphological evolution and migration in the Sanlongsha Dune Field. The findings show that wind events, especially those exceeding the threshold velocities of coarse grains, significantly influence the morphodynamics of granule ripples. The study highlights the importance of considering the reptation and saltation of coarse grains in future research on granule ripples.