Increasing magnetic susceptibility of the suspended particles in Yangtze River and possible contribution of fly ash
Action anthropique ; Alluvion ; Bassin-versant ; Bilan de masse ; Charge en suspension ; Chine ; Microscope électronique ; Pollution ; Susceptibilité magnétique ; Yangtze
Alluvium ; China ; Electron microscope ; Glacier mass balance ; Human impact ; Magnetic susceptibility ; Pollution ; Suspended load ; Watershed ; Yangtze
The magnetic properties of soil have been increasingly applied as a rapid and economic way to monitor environment pollution. Sediments from a growing islet in the lower reach of Yangtze River as well as the suspended particles in the surrounding
river water were used to identify anthropogenic influence on the magnetic susceptibility (MS) of the Yangtze River sediment. The records from 2004 to 2010 indicate progressive increase in the MS of the suspended particles in Yangtze Rive. Mass balance
calculation based on the increasing MS suggests that at least 7% of the fly ash produced within the catchment of Yangtze River was released into the environment.
China ; Coastal dynamics ; Coastal sedimentation ; Estuary ; Grain size distribution ; Intertidal zone ; Sedimentology ; Tidal current ; Wave ; Yangtze
Sediment samples with high spatial resolution and flow data were collected on the tidal flats in the mouth-bar region of the Yangtze Estuary in July 2005, July 2006 and May 2007. The samples were analyzed with a particle sizer, resulting
Morphodynamic characteristics of the dextral diversion of the Yangtze River mouth, China: tidal and the Coriolis Force controls
Charge en suspension ; Chine ; Cours d'eau ; Delta ; Embouchure ; Géomorphodynamique ; Holocène ; Modèle numérique de terrain ; Transport sédimentaire ; Yangtze
China ; Delta ; Digital elevation model ; Earth surface processes ; Holocene ; River mouth ; Sediment transport ; Stream ; Suspended load ; Yangtze
This paper examines the morphological development of the Yangtze River mouth, which has been diverting southeasterly (dextrally), according to historical (150 years) chart-based digital evolution model and on-site measured tidal flow data. The AA
prone to estuarine siltation. Using the present approach also enables explanation of the morphological development of the Holocene Yangtze delta-coast that extends to the southeast.
Spatiotemporal change of ecological footprint and sustainability analysis for Yangtze Delta Region
Années 2000 ; Chine ; Delta ; Développement durable ; Ecologie appliquée ; Empreinte écologique ; Espace-temps ; Gestion de l'environnement ; Modèle ; Yangtze
Applied ecology ; China ; Delta ; Ecological footprint ; Environmental management ; Model ; Space time ; Sustainable development ; The 2000's ; Yangtze
and city) and assessed urban sustainable development ability in Yangtze Delta Region (YDR). Then they discussed the driving factors that affected the change of ecological footprint by the Stochastic Impacts by Regression on Population, Affluence
Impacts of socio-economic factors on sediment yield in the Upper Yangtze River
; Utilisation agricole du sol ; Yangtze
Agricultural land use ; China ; Correlation ; Deforestation ; Human impact ; Hydraulic works ; Population density ; Sedimentation rate ; Sichuan ; Slope gradient ; Socio-economic indicators ; Soil erosion ; Soil properties ; Watershed ; Yangtze
Taking Sichuan Province and Chongqing City as an example, this paper studies the relationship between socio-economic factors and sediment yield in the Upper Yangtze River based on section data in 1989 and 2007. The results show that sediment yield
Spatio-temporal changes of NDVI and its relation with climatic variables in the source regions of the Yangtze and Yellow rivers
The spatial distribution and dynamic change of vegetation cover in the source regions of the Yangtze and Yellow rivers are analyzed in recent 10 years based on 1-km resolution multi-temporal SPOTVGT-DN data from 1998 to 2007. Meanwhile
effect on NDVI change, and the second greatest factor influencing NDVI was average temperature. The correlation between NDVI and shallow ground temperature in the source regions of the Yangtze and Yellow rivers increased significantly with the depth
Les AA étudient les différentes attitudes et réponses des paysans chinois vis-à-vis de la politique de développement rural initiée par le gouvernement dans les régions de Bohai, du delta du Yangtze et de la Rivière des Perles. Les résultats montrent
Based on the data of the 12 meteorological stations in the “Three-River Headwaters” region and the observed runoff data of Zhimenda in the headwater sub-region of the Yangtze River, Tangnaihai in the headwater sub-region of the Yellow River
Les AA. étudient la dégradation des sols dans le bassin hydrographique du fleuve Jaune et du Yangtze dans le Sud-ouest de la Chine et du Tibet. Ils analysent les quantités de transport sédimentaire et leurs variations interannuelles. Ce transport