Article
Geography, Physical
Lin Liu, Houjie Wang, Zuosheng Yang, Yongyong Fan, Xiao Wu, Limin Hu, Naishuang Bi
Summary: This study investigates the temporal-spatial variations in the grain size of sediments from the Huanghe delta coast and reveals the key factors and environmental significance of sediment variability. The results show that the sediments have become coarser in recent years, which has significant implications for the evolution of river deltas and carbon-related biogeochemical processes.
Article
Geosciences, Multidisciplinary
Naishuang Bi, Houjie Wang, Xiao Wu, Yoshiki Saito, Congliang Xu, Zuosheng Yang
Summary: The modern Huanghe Delta used to be the most rapid land-building delta in the world, but its evolution has been affected by a decrease in sediment load from the Huanghe in recent decades. This study used bathymetric data and Landsat imagery to study the spatiotemporal evolution of the delta, revealing distinct patterns in the evolution of the active lobe and the abandoned lobe. The evolution of the active lobe was influenced by sediment load, hydrodynamic-morphologic interactions, and grain size of the sediment, while changes in sediment dispersals dominated the evolution of the abandoned lobe.
Article
Environmental Sciences
Wenfei Jia, Yujun Yi
Summary: This study presents a numerical model that analyzes the sediment distribution and erosion-accretion patterns in the Yellow River Estuary (YRE) during the water-sediment regulation scheme (WSRS). The results show that WSRS effectively changes the sediment distribution and erosion condition in the YRE.
FRONTIERS IN MARINE SCIENCE
(2023)
Article
Environmental Sciences
Liang Zhou, Yang Yang, Yong Shi, Xiaomei Xu, Ya Ping Wang, Jianjun Jia, Jian Hua Gao, Shu Gao
Summary: This study investigates the temporal changes in sedimentary organic carbon in the northern Yangtze River subaqueous delta over the past 2000 years. The results show that the variations in terrestrial organic carbon inputs are mainly controlled by the East Asian summer monsoon and human activities. However, the decreased inputs after 1385 CE are significantly affected by the increased contribution of sediment from the Huanghe River.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Environmental Sciences
Guoxiang Wu, Kemeng Wang, Bingchen Liang, Xiao Wu, Houjie Wang, Huajun Li, Benwei Shi
Summary: The morphological evolution of the Yellow River Delta is influenced by water-sediment regulation schemes, which result in impulsive floods and high sediment loads. The study reveals that the deposition in the delta is divided into three parts: the delta front, the subaerial delta, and the prodelta. It is also found that constant-discharge simplification fails to capture the highly-depositional flows and underestimates river mouth depositions.
WATER RESOURCES RESEARCH
(2023)
Article
Environmental Sciences
Andrew J. Moodie, Jeffrey A. Nittrouer, Hongbo Ma, Brandee N. Carlson, Yuanjian Wang, Michael P. Lamb, Gary Parker
Summary: This study demonstrates that sediment concentration may influence the magnitude and pattern of vertical density stratification through sampling and measurement under different flow conditions in the lower reach of the Yellow River. The importance lies in the understanding of the vertical density stratification phenomenon in natural river flows, which can improve sediment transport models and provide guidance for ecological environmental management and flood protection measures in rivers.
WATER RESOURCES RESEARCH
(2022)
Article
Environmental Sciences
Xiao Wu, Houjie Wang, Naishuang Bi, Jingping Xu, Jeffrey A. Nittrouer, Zuosheng Yang, Taian Lu, Peihua Li
Summary: This study highlights the impacts of the Water-Sediment Regulation Scheme (WSRS) on the lower Yellow River system, showing that artificial floods have significantly altered the volume and grain size patterns of transported sediment. The changes have led to high sediment loads over a shorter time frame and coarsening of the river channel, causing a shift from recession to progradation in the Yellow River delta and rapid burial of terrestrial organic carbon and pollutants.
WATER RESOURCES RESEARCH
(2021)
Article
Environmental Sciences
Yilin Liu, Jinqing Liu, Xingfan Xia, Haibo Bi, Haijun Huang, Renwei Ding, Lihong Zhao
Summary: The study combines various data sources and methods to investigate the long-term spatiotemporal settlement of the Yellow River Delta, providing insights into the primary processes controlling surface movement.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Geosciences, Multidisciplinary
Shihao Liu, John A. Goff, Shu Gao, Aiping Feng, Ya Ping Wang, Jianjun Jia, Weifen Hu, Wei Feng, Yonggui Yu
Summary: Many mega-river deltas in the world are deteriorating due to the lack of sediment supply. This study investigates the geomorphological and sedimentary evolution of a recently abandoned Huanghe delta lobe using bathymetric and seismic data. The study finds that mass wasting and sediment failure contribute to the degradation of the delta, and gravity-driven sedimentation plays a significant role in the evolution of the delta front. Additionally, alongshore hydrodynamic processes, particularly tidal remolding, result in the formation of shore-parallel submarine channels. These findings highlight the importance of sediment gravity flows and hydrodynamic redistribution in understanding the degradation of delta fronts.
JOURNAL OF GEOPHYSICAL RESEARCH-EARTH SURFACE
(2022)
Article
Environmental Sciences
Yujun Yi, Xueyuan Wang, Qi Liu, Jin Zhang, Qitao Yi
Summary: The Yellow River, with the highest amount of sediment globally, experiences active accretion and erosion in its river delta. The implementation of the water-sediment regulation scheme (WSRS) has effectively reversed the erosion trend in the Yellow River delta.
ESTUARIES AND COASTS
(2022)
Article
Environmental Sciences
Tian Xie, Andong Wang, Shanze Li, Baoshan Cui, Junhong Bai, Dongdong Shao
Summary: Burrowing crabs play an important role in the coastal estuary ecosystems by influencing the cycling of sediments and nutrients. This study analyzed the burrow morphology and local sediment properties of the crab Helice tientsinensis and found that the crabs' excavation activities significantly contribute to the turnover of sediment and nutrients. The findings provide valuable information for understanding the geochemical cycling in estuarine ecosystems.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Geosciences, Multidisciplinary
Hong Zhang, Yang Lu, Xiaolei Liu, Xingyu Li, Zhenhao Wang, Chunsheng Ji, Chao Zhang, Zekun Wang, Shaodong Jing, Yonggang Jia
Summary: The bottom morphology of the Yellow River subaqueous delta is highly complex, with a moderately disturbed area and a heavily disturbed area. The heavily disturbed area shows evidence of liquefaction-related sediment failure and is divided into four morphological zones. Sub-bottom profiles reveal erosion as the main cause of failure features in Zone 1, while Zones 2-4 lack internal structures and display chaotic/disturbed signatures, indicating liquefaction. The formation mechanism for these features involves sediment liquefaction, resuspension, resolidification, and erosion.
MARINE AND PETROLEUM GEOLOGY
(2023)
Article
Environmental Sciences
Weiming Xie, Jianwei Sun, Leicheng Guo, Fan Xu, Xianye Wang, Hongyu Ji, Yaoshen Fan, Zheng Bing Wang, Qing He
Summary: Coastal tidal flats are important ecosystems, but they are highly vulnerable to tidal dynamics, sea-level rise, and human activities. This study examined the hydrodynamics, sediment transport, and morphological changes on two tidal flats in the Yellow River Delta with different tidal regimes. The results showed that longer inundation periods under diurnal tides led to more sediment deposition, while semi-diurnal tides resulted in increased wave impact and tidal flat erosion due to lower water depths. These findings highlight the joint role of tidal regime and powerful waves in controlling sediment availability and tidal flat evolution. This has implications for managing erosion and restoring vegetation in the Yellow River Delta.
FRONTIERS IN MARINE SCIENCE
(2023)
Article
Environmental Sciences
Zaiwang Zhang, Tongrui Zhang, Wenhao Yu, Jikun Xu, Jialiang Li, Tao Wu, Suzhe Liu, Haiyang Wang, Yuxia Wang, Shuai Shang, Aiguo Lin
Summary: Heavy metals, major pollutants in wetland environments, were found to be present in high mass fractions in the sediments of wetlands vegetated by invasive species Spartina alterniflora. The study also revealed correlations among metal elements and identified clay and TOC as important factors affecting metal distribution. The pollution levels of these metals were relatively low, indicating low potential ecological risks.
Article
Environmental Sciences
Junyu Dong, Wei Wang, Di Zhao, Chao Zhang, Jiaohui Fang, Lifei Wang, Qingzhu Zhang, Jian Liu
Summary: This study proposed a novel mechanism for organic carbon accumulation in coastal delta croplands, revealing the characteristics and accumulation pattern of HFOC in the soil. The findings suggest that root exudative organic acids play a complex role in both the loss of indigenous OC and the promotion of OC accumulation.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Yuying Chen, Ming Liu, Xilin Zhang, Xuejiao Bu, Jingbo Chen, Xiao Wu
Summary: The Water-Sediment Regulation Scheme in the Yellow River has significantly altered the sediment composition and heavy metal pollution status in the estuary. Most heavy metals are natural in origin, but arsenic may be influenced by human activities. The scheme had limited impact on the ecological environment, but arsenic could pose a threat.
MARINE POLLUTION BULLETIN
(2021)
Article
Environmental Sciences
Xiao Wu, Houjie Wang, Naishuang Bi, Jingping Xu, Jeffrey A. Nittrouer, Zuosheng Yang, Taian Lu, Peihua Li
Summary: This study highlights the impacts of the Water-Sediment Regulation Scheme (WSRS) on the lower Yellow River system, showing that artificial floods have significantly altered the volume and grain size patterns of transported sediment. The changes have led to high sediment loads over a shorter time frame and coarsening of the river channel, causing a shift from recession to progradation in the Yellow River delta and rapid burial of terrestrial organic carbon and pollutants.
WATER RESOURCES RESEARCH
(2021)
Article
Environmental Sciences
Quantao Zhu, Peng Li, Zhenhong Li, Sixun Pu, Xiao Wu, Naishuang Bi, Houjie Wang
Summary: This study combined optical and Synthetic Aperture Radar (SAR) satellite remote sensing images to analyze the spatiotemporal changes of the Yellow River Delta coastline from 1980 to 2020, demonstrating the significant impact of sediment discharge on coastline changes.
Article
Oceanography
Xiting Liu, Mingyu Zhang, Anchun Li, Daidu Fan, Jiang Dong, Chaoqun Jiao, Xin Chang, Yu Gu, Kaidi Zhang, Houjie Wang
Summary: This study investigates the preservation of carbon and sulfur in estuary and shelf sediments, finding that the C/S ratio can effectively differentiate between freshwater and marine environments. It suggests a new mechanism for the influence of physical factors on carbon and sulfur preservation, providing valuable insights into sediment diagenesis related to the global biogeochemical cycle.
CONTINENTAL SHELF RESEARCH
(2021)
Article
Geosciences, Multidisciplinary
Naishuang Bi, Houjie Wang, Xiao Wu, Yoshiki Saito, Congliang Xu, Zuosheng Yang
Summary: The modern Huanghe Delta used to be the most rapid land-building delta in the world, but its evolution has been affected by a decrease in sediment load from the Huanghe in recent decades. This study used bathymetric data and Landsat imagery to study the spatiotemporal evolution of the delta, revealing distinct patterns in the evolution of the active lobe and the abandoned lobe. The evolution of the active lobe was influenced by sediment load, hydrodynamic-morphologic interactions, and grain size of the sediment, while changes in sediment dispersals dominated the evolution of the abandoned lobe.
Article
Geosciences, Multidisciplinary
Shuai Cong, Xiao Wu, Jianzhong Ge, Naishuang Bi, Yunhai Li, Jian Lu, Houjie Wang
Summary: The study using a high-resolution model revealed that sediment dynamics on the East China Sea inner shelf showed significant asymmetry during the passage of Typhoon Chan-hom, leading to sediment resuspension and transport towards the southwest direction. The research also found that the typhoon disrupted the coastal upwelling in summer, enhancing cross-shelf sediment transport.
Article
Environmental Sciences
Jingbo Chen, Ming Liu, Naishuang Bi, Yadi Yang, Xiao Wu, Dejiang Fan, Houjie Wang
Summary: The study found that the transport of heavy metals is significantly controlled by hydrological processes, mainly in particulate form, closely related to particle size and suspended sediment concentration. Heavy metals mainly originate from the upper and middle reaches of the Yellow River, but are also influenced by human emissions in downstream areas. Downstream areas play an important role as a sink in the process of heavy metal input into the sea, acting as a significant buffer and filter.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
Canran Tu, Peng Li, Zhenhong Li, Houjie Wang, Shuowen Yin, Dahui Li, Quantao Zhu, Maoxiang Chang, Jie Liu, Guoyang Wang
Summary: This study proposed a synergistic classification method combining hyperspectral and radar imagery for wetland mapping, achieving an overall accuracy of 97% and demonstrating the effectiveness of this fusion approach. The synergy of polarimetric SAR and hyperspectral imagery enables high-resolution wetland classification, offering potential for providing accurate and temporally detailed wetland classification results in different regions.
Article
Environmental Sciences
Jie Liu, Peng Li, Canran Tu, Houjie Wang, Zhiwei Zhou, Zhixuan Feng, Fang Shen, Zhenhong Li
Summary: This study investigates the spatiotemporal coherence change in the coastal wetlands of the Yellow River Delta using synthetic aperture radar (SAR) images. The results show that the temporal baseline has a significant impact on coherence, and a synergetic classification method combining SAR coherence, backscatter intensity, and optical images outperforms single-source data or other algorithms.
Article
Environmental Sciences
Maoxiang Chang, Peng Li, Zhenhong Li, Houjie Wang
Summary: The article introduces a new method using Sentinel-2 imagery and Google Earth Engine to generate a tidal flat map for the Bohai and Yellow Seas. The map covers a time span from October 1, 2020, to October 31, 2021, with an overall accuracy of 94.55% and a total area of 546,360.2 hectares. This updated tidal flat map can facilitate policy-making and provide insights into the responses of tidal flats to natural and human disturbance.
Article
Environmental Sciences
Maoxiang Chang, Peng Li, Yue Sun, Houjie Wang, Zhenhong Li
Summary: This study proposes a method for extracting TMZ in the Yellow River estuary using time series remote sensing images and GEE, and systematically investigates the distribution, variation, and regulation mechanisms of TMZ. The results show that there are clear seasonal and decadal variations in TMZ in the Yellow River estuary, which are influenced by morphology, currents, wind speeds, and seawater stratification.
Article
Environmental Sciences
Xueshi Sun, Limin Hu, Xiang Sun, Dejiang Fan, Ming Liu, Houjie Wang, Zuosheng Yang, Peng Cheng, Xiaohang Liu, Zhigang Guo
Summary: This study reveals that the Eastern China Marginal Seas (ECMS) are one of the largest reservoirs of mercury (Hg) in the global Hg cycle and play a dominant role in regulating the oceanic Hg cycle and budgets.
GLOBAL BIOGEOCHEMICAL CYCLES
(2023)
Article
Engineering, Electrical & Electronic
Peng Li, Guoyang Wang, Cunren Liang, Houjie Wang, Zhenhong Li
Summary: This article examines the contribution of local land subsidence (LLS) in the Yellow river delta (YRD) to relative sea level rise (SLR) and the risk of coastal flooding. It proposes a method to estimate coastal inundation by combining radar interferometry (InSAR)-derived LLS and SLR. The study reveals that LLS contributes significantly to flood risk in the YRD, with subsiding areas exceeding 50 mm/yr and rates reaching over 300 mm/yr. Under different greenhouse gas emissions scenarios, the research presents inundation scenarios and highlights the urgent need for mitigation measures to prevent future coastal flooding.
IEEE JOURNAL OF SELECTED TOPICS IN APPLIED EARTH OBSERVATIONS AND REMOTE SENSING
(2023)
Article
Engineering, Electrical & Electronic
Peng Li, Zhenhong Li, Keren Dai, Yasir Al-Husseinawi, Wanpeng Feng, Houjie Wang
Summary: The study presents an iterative method to generate high-resolution TanDEM-X DEMs and assesses vertical accuracy in China, showing remarkable elevation quality in coastal areas but weaker accuracies in steep mountainous areas. The TanDEM-X DEM performs better than other global DEMs overall, with low topographic error contribution in mountainous and coastal areas.
IEEE JOURNAL OF SELECTED TOPICS IN APPLIED EARTH OBSERVATIONS AND REMOTE SENSING
(2021)
Article
Oceanography
Alyssa M. LeClaire, Eric N. Powell, Roger Mann, Kathleen M. Hemeon, Sara M. Pace, Vincent Saba, Hubert du Pontavice, Jillian R. Sower
Summary: Arctica islandica is an important species for recording climate change on the U.S. northeast continental shelf, and its growth rates show synchronous changes with cold and warm climatic periods. This study finds that A. islandica near the Delmarva Peninsula had higher growth rates during cold periods, possibly due to increased food supply in shallower water. The range recession of this species is a long-term process determined by the survivorship of older individuals.
CONTINENTAL SHELF RESEARCH
(2024)