Article
Environmental Sciences
Houfa Wu, Zhenxin Bao, Jie Wang, Guoqing Wang, Cuishan Liu, Yanqing Yang, Dan Zhang, Shuqi Liang, Chengfeng Zhang
Summary: This study analyzed the variation characteristics of runoff and the main influencing factors in the source regions of the Yangtze River and the Yellow River. The results showed that climate change had the greatest effect on runoff variation in the Yangtze River source region, while other environmental factors mainly controlled the runoff variation in the Yellow River source region. These findings are of great significance for improving water resources utilization efficiency.
Review
Geosciences, Multidisciplinary
Xiao Wu, Yao Yue, Alistair G. L. Borthwick, Louise J. Slater, Jaia Syvitski, Naishuang Bi, Zuosheng Yanga, Houjie Wang
Summary: Large reservoirs have significant impacts on the water-sediment dynamics and morphology of alluvial rivers. The anti-seasonal regulation mode of the Three Gorges Reservoir led to widespread downstream incision, while the swift drawdown process of the Xiaolangdi Reservoir effectively mitigated reservoir sedimentation and boosted sediment reaching the sea. Both reservoirs experienced vast sedimentation, causing erosion and coarsening downstream of the dams. The sediment deficits posed challenges to the sustainability of the Yangtze and Yellow river deltas.
EARTH-SCIENCE REVIEWS
(2023)
Article
Environmental Sciences
Xin Yao, Kun Luo, Yandong Niu, Youzhi Li, Bo Ren
Summary: The study analyzed the concentrations of six toxic metals in surface sediments of major rivers in China and assessed their pollution statuses and potential ecological risks. The Pearl and Yangtze rivers showed relatively high concentrations, while the Yellow and Liaohe rivers showed lower concentrations. The concentrations of Cd, Cr, and Cu exceeded threshold effect levels in all four rivers, with Ni exceeding probable effect levels in the Pearl River sediments.
BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY
(2021)
Article
Geosciences, Multidisciplinary
Paolo Billi, Velibor Spalevic
Summary: This study utilized suspended sediment yield field data measured by the national and regional hydrological services to investigate the factors influencing sediment yield in Italy. The research found a wide variation in sediment yield and attributed the marked decrease in sediment yield in Italy to factors such as reduced annual precipitation and forest expansion.
Article
Environmental Sciences
Boyan Li, Yunchen Wang
Summary: Understanding the dynamics of sediment transport and their underlying driving mechanisms is critical to sustainable river basin management. However, there is a lack of quantification of various drivers of sediment load change, and the impact of climate change on sediment transport under different global warming scenarios is not well understood.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Water Resources
Jim Bogen
Summary: The projected climate change in Norway indicates significant temperature increase and more intense and frequent heavy rainfall events. This study focuses on the sediment dynamics in rivers during extreme flooding and heavy rain, and identifies major sediment sources in the Gudbrandsdalslagen river basin. The results can be used to inform management plans for river basins and adapt to climate change.
HYDROLOGICAL PROCESSES
(2022)
Article
Ecology
Agnieszka Szczerba, Sergi Pla-Rabes, Wojciech Tylmann
Summary: Climate warming has a strong influence on aquatic processes and population dynamics of aquatic organisms. This study investigated Lake Zabinskie in northeast Poland to understand the relationships between meteorological conditions, physicochemical variables, and diatoms and chrysophyte cysts. The results showed direct and indirect influences of meteorological conditions on the lake's physicochemical conditions and biota, including changes in taxonomic composition and phenology. These findings highlight the potential impacts of ongoing climate change on eutrophic lakes.
FRESHWATER BIOLOGY
(2023)
Article
Environmental Sciences
D. W. Haught, J. G. Venditti
Summary: Measurement of sediment in large rivers is difficult and expensive, but crucial for managing these systems in the face of climate change and rising sea levels. Acoustic methods are used to estimate suspended sediment, and a sediment-index methodology is presented and assessed for the Lower Fraser River.
WATER RESOURCES RESEARCH
(2023)
Article
Environmental Sciences
John Gardner, Tamlin Pavelsky, Simon Topp, Xiao Yang, Matthew R. Ross, Sagy Cohen
Summary: Humans have significantly disrupted the global sediment cycle, affecting river morphology and ecosystems. Based on satellite observations from 1984 to 2018, the RivSed database provides a spatially explicit view of river sediment, revealing declining trends in sediment concentration in 32% of US rivers. Most rivers show decreasing sediment concentration downstream, primarily due to large dams. Comparing observations with models, there are differences in longitudinal sediment concentration patterns. RivSed has important implications for river geomorphology and ecology, illustrating human impacts on US river corridors.
ENVIRONMENTAL RESEARCH LETTERS
(2023)
Article
Engineering, Civil
Jiao Liu, Shaoda Liu, Xin Chen, Siyue Sun, Yuan Xin, Liu Liu, Xinghui Xia
Summary: Fluvial systems on the Qinghai-Tibetan Plateau emit large amounts of CH4 and CO2, with silt-dominated rivers showing significantly higher CH4 fluxes compared to sand- or gravel-dominated rivers. Sediment silt percentage is closely related to CH4 concentration and flux, suggesting a direct control of hydrology and sediment properties on CH4 emission in these rivers.
JOURNAL OF HYDROLOGY
(2023)
Article
Environmental Sciences
Honglu Qian, Jinxin Liu, Yunping Yang, Yunjia Liu, Yuanfang Chai
Summary: The study reveals significant changes in runoff and sediment load in the Yangtze River Basin, China, due to human activities and climate change. Human activities are identified as the primary cause of the hydrological regime changes, while climate change has a varying impact on runoff, with some areas experiencing increased runoff. These findings have implications for water resource management and environmental protection in the Yangtze River Basin.
Article
Engineering, Civil
W. Wang, S. Yin, G. Gao, S. M. Papalexiou, Z. Wang
Summary: Hourly precipitation data from 1971 to 2020 collected in the Yellow River basin were analyzed to examine changes in rainfall erosivity. The results showed a significant increase in rainfall erosivity at both event and seasonal scales, primarily due to increased storm precipitation, duration, rainfall energy, and maximum 1-hour intensity. Extreme erosivity storms occurred more frequently during the study period. These findings highlight the need for continued and enhanced conservation efforts in the Yellow River basin.
JOURNAL OF HYDROLOGY
(2022)
Article
Geosciences, Multidisciplinary
Jinlong Li, Genxu Wang, Kai Li, Yang Li, Linmao Guo, Chunlin Song
Summary: Variations in suspended sediment on the Qinghai-Tibet Plateau have significant implications for aquatic ecosystems. This study examined the responses of runoff and suspended sediment dynamics in the source region of the Yangtze River to climate change and ground freeze-thaw cycle. Results showed that climate change, through regulating air temperature and precipitation, controlled the seasonal and annual water-sediment dynamics. Precipitation and land surface temperature were identified as the major factors contributing to increased sediment fluxes. Freeze-thaw cycles affected soil erosion patterns and contributed to elevated sediment fluxes in the initial thaw and initial freezing periods.
Article
Environmental Sciences
Sen Shan, Chunle Luo, Yuanzhi Qi, Wei-Jun Cai, Shuwen Sun, Di Fan, Xuchen Wang
Summary: Transport of terrigenous carbon by rivers in China has been significantly impacted by climate change and human activities in recent decades. Different rivers in China show variations in DIC concentrations and ages, with chemical weathering playing an important role in controlling the production and fate of DIC. Carbonate rock weathering contributes significantly to riverine DIC in the Yangtze River, while silicate rock weathering dominates in the Yellow, Pearl, and Heilongjiang rivers.
JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES
(2021)
Article
Water Resources
Dunyu Zhong, Zengchuan Dong, Guobin Fu, Jiaqi Bian, Feihe Kong, Wenzhuo Wang, Yan Zhao
Summary: The study reveals that the streamflow in the Yellow River Basin is significantly decreasing, mainly due to human activity, with climate change playing a relatively smaller role in the reduction. This finding is crucial for water resource management in the Yellow River Basin.
JOURNAL OF WATER AND CLIMATE CHANGE
(2021)
Review
Geosciences, Multidisciplinary
Fuquan Yang, Xinxia Geng, Zhixin Zhang, Guoren Liu, Hanqing Zhang
Summary: Northern Xinjiang in China is an important part of the Central Asian Orogenic Belt, characterized by multiple episodes and types of mineralization. Cu and Au deposits are mostly found in Altay, Junggar, and Tianshan, with minor occurrences in Beishan. The most common types of Cu-Au deposits are volcanogenic and porphyry deposits. The formation of Cu-Au deposits can be divided into five mineralization episodes, with the Devonian and Carboniferous being the main periods. These deposits developed in various tectonic settings, including island arc, continental arc, collision, and postcollisional extensional tectonics.
JOURNAL OF ASIAN EARTH SCIENCES
(2024)
Article
Geosciences, Multidisciplinary
Jiang Zhu, Dan-yang Liu, Chao Chen, Song Chen, Yuan-bing Zou, Leonid Danyushevsky, Jing-meng Huang, Xiang-wei Tang
Summary: Numerous lode gold and silver deposits have been discovered in orogenic belts in China. This study focuses on the formation and fluid evolutions of the super-large Yingdongpo gold and giant Poshan silver deposits in the Tongbai-Dabie orogen. The results suggest that both deposits were formed concurrently with Early Cretaceous granitic magmatism and the ore-forming fluids were primarily of magmatic origin with meteoric water inputting. The gold mineralization is related to a change in the physicochemical properties of the fluids, while the silver mineralization is favored by progressive deposition of sulfides in a slowly cooling hydrothermal system.
JOURNAL OF ASIAN EARTH SCIENCES
(2024)
Article
Geosciences, Multidisciplinary
Arun Bhadran, B. P. Duarah, Drishya Girishbai, Mohammad Atif Raza, Avi Mero, Sandeep Lahon, A. L. Achu, Girish Gopinath
Summary: The Brahmaputra foreland basin, known for its dynamic tectonism and sediment load, exhibits a variety of seismically generated soft sediment deformation structures (SSDS) such as clastic dikes, sand sills, and micro-faults. These structures, influenced by multiple strong seismic events, are characterized by their dimensions, intrusion angles, cross-cutting relations, wall shattering, and age. The study suggests that a significant earthquake with high intensity and magnitude might have caused liquefaction features in the area. The findings highlight the importance of studying SSDS in tectonically active regions with limited surface ruptures and dense alluvial cover.
JOURNAL OF ASIAN EARTH SCIENCES
(2024)
Article
Geosciences, Multidisciplinary
Huan Wang, Lirong Dou, Xingyang Zhang, Jiquan Yin, Beiwei Luo, Haigang Duan, Peiguang Yang, Yifan Song
Summary: Quantitative analysis of sediment composition and microfacies helped identify changes in facies belts in the Cretaceous Mishrif Formation. The study demonstrated the importance of carbonate microfacies quantification and its implications for paleogeographic research.
JOURNAL OF ASIAN EARTH SCIENCES
(2024)
Article
Geosciences, Multidisciplinary
Boran Wang, Zhilong Huang, Dongsheng Xiao, Haiyue Yu, Wenren Zeng, Xin Wang, Tong Qu, Zhiyuan Li, Yizhuo Yang
Summary: By systematically analyzing the source rocks of the Sangonghe Formation in the Taibei Sag, NW China, and using kerogen kinetics modeling, this study reveals the influence of geological conditions on hydrocarbon generation and expulsion. The source rocks in different environments show distinct geochemical characteristics and hydrocarbon generation potential.
JOURNAL OF ASIAN EARTH SCIENCES
(2024)
Article
Geosciences, Multidisciplinary
Haiying Yang, Zhifang Zhao, Haifeng Fan, Min Zeng, Jiafei Xiao, Xiqiang Liu, Shengwei Wu, Jiangqin Chao, Yong Xia
Summary: This paper investigates the REE enrichment and the role of Fe/Mn (oxyhydr)oxides in marine phosphorites from the early Cambrian period in South China. The study reveals that Fe/Mn (oxyhydr)oxides play a crucial role in REE enrichment and are controlled by Fe-redox pumping.
JOURNAL OF ASIAN EARTH SCIENCES
(2024)
Article
Geosciences, Multidisciplinary
Qing Li, Hongbin Wang, Feng Cai, Di Luo, Fanxing Kong, Ang Li, Xiting Liu
Summary: The elemental and isotopic compositions and abundance of carbonates in marine sediments are used to reconstruct ancient climate and ocean conditions. This study analyzed sediment samples from the Okinawa Trough to examine the relationship between carbonates' compositions and methane seepage and sea-level changes. The results indicate that both biogenic and authigenic carbonates are important factors in understanding paleoclimate and paleoceanography.
JOURNAL OF ASIAN EARTH SCIENCES
(2024)
Article
Geosciences, Multidisciplinary
Maryam Akbarzadeh Aghdam, Abdolreza Ghods, Farhad Sobouti, Khalil Motaghi, Keith Priestley, Mohammad Enayat
Summary: The Makran subduction zone is difficult to monitor due to limited seismic activity, but a temporary seismic network was installed to investigate the relationship between different regions and detect seismicity. The observed seismicity suggests the presence of structural boundaries and seismically inactive areas.
JOURNAL OF ASIAN EARTH SCIENCES
(2024)
Article
Geosciences, Multidisciplinary
Zhen-Yu Wang, Hong-Rui Fan, Hai-Dong She, Kui-Feng Yang
Summary: This study conducted detailed geochemical, geochronological and isotopic analyses on the Songxian syenite in the Qinling Orogen. The results revealed the magma sources, petrogenesis and geodynamic implications of this alkaline intrusion. The study suggests that the syenite was formed through multiple stages of magmatism, involving the partial melting of the enriched lithospheric mantle and mixing with melts derived from the lower crust.
JOURNAL OF ASIAN EARTH SCIENCES
(2024)
Article
Geosciences, Multidisciplinary
Yu Li, Wen-Liang Xu, Xiao-Ming Zhang, Jie Tang
Summary: This study presents new zircon U-Pb-Hf and whole-rock geochemical data for Jurassic intrusive rocks in the Yanbian area of NE China, providing insights into the subduction history of the Paleo-Pacific Plate. The study reveals three stages of Jurassic magmatism in the area, indicating the presence of an active continental margin related to the initial subduction of the Paleo-Pacific Plate beneath the Eurasian continent.
JOURNAL OF ASIAN EARTH SCIENCES
(2024)
Article
Geosciences, Multidisciplinary
Lina Ai, Shengfa Liu, Shuai Cong, Hui Zhang, Peng Cao, Kaikai Wu, Wenxing Ye, Che Abd Rahim Mohamed, Xuefa Shi
Summary: This study investigates the depositional configurations and sedimentary environments of the Malacca Strait through analyzing grain size characteristics and hydrographic data. The results show that residual sediments are concentrated in the central region, while modern terrigenous sediments are distributed along the coast of Malaysia and the northern region. The sedimentary environments are influenced by seasonal variations and hydrodynamic conditions.
JOURNAL OF ASIAN EARTH SCIENCES
(2024)
Article
Geosciences, Multidisciplinary
Liang Xiao, Jia-qi Liang, Li-yan Guo, De-shuang Ji, Man Yuan, Xiang-chuan Li, Nan Sun, Zuo-chen Li
Summary: This study investigates the correlation between stable carbon isotopes of plant fossils and CO2 levels in the Jurassic period. The results suggest a weak correlation between the two, indicating caution is needed when using stable carbon isotopes to reconstruct high paleo-CO2 concentrations.
JOURNAL OF ASIAN EARTH SCIENCES
(2024)
Article
Geosciences, Multidisciplinary
Xuli Yang, Feng Huang, Jifeng Xu, Xijun Liu, Liying Zhang, Zhao Zhang, Benyan Xu, Man Zhang, Yunchuan Zeng, Qian Liu, Mingda Lv
Summary: The extensively developed Early Cretaceous intermediate-felsic rocks in the northern North China Craton provide valuable insights into the nature of Paleo-Pacific subduction and associated geodynamic processes. Geochemical and geochronological analyses of trachyandesites and rhyolites from the eastern Hebei, northern NCC suggest that the trachyandesites likely originated from enriched mafic lower crust and the rhyolites are derived from the trachyandesitic magmas through fractional crystallization. The migration direction change of these rocks is believed to be primarily attributed to slab rollback of the subducting Paleo-Pacific Plate.
JOURNAL OF ASIAN EARTH SCIENCES
(2024)
Article
Geosciences, Multidisciplinary
Wei Liu, Ping Gao, Xianming Xiao, Yanming Zhao, Yijie Xing, Jinku Li
Summary: The organic-rich shales of the Shuijingtuo Formation in China are an important target for shale gas exploration. The upper section of the formation, primarily consisting of limestone, silty shale, and black shale, has been rarely studied but recently showed promising results for shale gas exploration. Geochemical investigations of the upper section shale deposits revealed that the organic matter enrichment mechanism underwent dynamic changes due to relative sea-level changes and episodic upwelling activities.
JOURNAL OF ASIAN EARTH SCIENCES
(2024)
Article
Geosciences, Multidisciplinary
Xin Wang, Chen Zhang, Zixin Xue, Qianyou Wang, Zhenxue Jiang, Kun Zhang, Xiangye Kong
Summary: This study analyzed the heterogeneity of gas compositions and the effects of magmatism on gas accumulation in shale gas exploration in the Yangtze plate. The results showed that magmatism caused the development of micro-fractures in shale reservoirs and accelerated the thermal evolution rate of organic matter. The impact of magmatism on shale gas accumulation varied in different regions, either favoring or compromising efficient gas accumulation in shale reservoirs.
JOURNAL OF ASIAN EARTH SCIENCES
(2024)