-
Article
Distribution and source apportionment of phenolic EDCs in rivers in the Pearl River Delta, South China
The sources and distribution characteristics of three phenolic endocrine-disrupting compounds (EDCs), e.g., alkylphenols (APs) (including nonylphenols (NPs) and 4-t-octylphenol (OP)) and Bisphenol A (BPA), wer...
-
Article
Contribution of ammonia-oxidizing archaea and bacteria to nitrification under different biogeochemical factors in acidic soils
Nitrification in soils is an essential process that involves archaeal and bacterial ammonia-oxidizers. Despite its importance, the relative contributions of soil factors to the abundance of ammonia-oxidizing a...
-
Article
Changes in dissolved inorganic carbon in river water due to urbanization revealed by hydrochemistry and carbon isotope in the Pearl River Delta, China
Under natural conditions, the dissolved inorganic carbon (DIC) in river water is dominantly derived from carbonate or silicate dissolution by carbonic acid. However, sulfuric and nitric acids produced by human...
-
Article
Groundwater systems in bare and covered karst aquifers: evidence from tracer tests, hydrochemistry, and groundwater ages
The east Guilin region contains a karst dominated hydrological system along the Lijiang River. The two main topographic characteristics of the basin are peak cluster depression and peak forest. Despite the fac...
-
Article
Dynamics of dissolved greenhouse gas response to seasonal water mixing in subtropical reservoirs
Although indispensable, significant uncertainty still exists in the underlying processes of the formation, dynamics, and emission of greenhouse gases (GHGs), the critical elements needed for the accurate estim...
-
Article
Hydrochemical evolution of groundwater in a riparian zone affected by acid mine drainage (AMD), South China: the role of river–groundwater interactions and groundwater residence time
Investigations were undertaken in the riparian zone near Shangba village, an AMD area, in southern China to determine the effects that river–groundwater interactions and groundwater residence time have had on ...
-
Article
The distribution and partitioning of trace metals (Pb, Cd, Cu, and Zn) and metalloid (As) in the Beijiang River
The concentrations of Cu, Zn, Pb, Cd, and As varied quite differently in the water, suspended particulate matter (SPM), and sediment along the middle reach of the Beijiang River in southern China. The total co...
-
Article
Changes in flow and chemistry of groundwater heavily affected by human impacts in the Baiyangdian catchment of the North China Plain
To identify impacts of air pollution, sewage drainage, agricultural production, over-pum** and reservoir storage on groundwater, a field survey was conducted in the Baiyangdian catchment of the North China P...
-
Article
The interaction between surface water and groundwater and its effect on water quality in the Second Songhua River basin, northeast China
The relationship between surface water and groundwater not only influences the water quantity, but also affects the water quality. The stable isotopes (δD, δ 18O) and hydrochemical composi...
-
Article
Assessment of major ions and heavy metals in groundwater: a case study from Guangzhou and Zhuhai of the Pearl River Delta, China
Anthropogenic activities in the Pearl River Delta (PRD) have caused a deterioration of groundwater quality over the past twenty years as a result of rapid urbanization and industrial development. In this study...
-
Article
Open AccessIdentifying the hydrochemical characteristics of rivers and groundwater by multivariate statistical analysis in the Sanjiang Plain, China
Two multivariate statistical technologies, factor analysis (FA) and discriminant analysis (DA), are applied to study the river and groundwater hydrochemistry and its controlling processes in the Sanjiang Plain...
-
Article
Hydrochemical zoning: natural and anthropogenic origins of the major elements in the surface water of Taizi River Basin, Northeast China
Discriminating the hydrochemical origins in the polluted rivers is a challenge work due to multiple sources contributing to the river’s chemical composition. The Taizi River, as an important tributary of the L...
-
Article
Hydrochemical characteristic and interaction process of surface and groundwater in mid-lower reach of Hanjiang River, China
Hanjiang River, the largest tributary of Yangtze, faces environmental pressures from South-to-North Water Transfer project and anthropogenic influences. In order to reveal the chemical characteristics of river...
-
Article
The relationship between and evolution of surface water and groundwater in Songnen Plain, Northeast China
To improve water management, the relation and the hydrochemical evolution of surface water and groundwater were studied in the Songnen Plain. The surface water and groundwater samples were evaluated for stable...
-
Article
Major ion chemistry, chemical weathering and CO2 consumption in the Songhua River basin, Northeast China
A detailed analysis of the major ion chemistry, chemical weathering and CO2 consumption was conducted in the Songhua River basin, which is the largest basin with a draining area of 557 thousand km2 in Northeast C...
-
Article
Hydrogeochemical characteristics and associated mechanism based on groundwater dating in a karstic basin, Guizhou Province, China
Multiple tracers were used to assess the spatial distribution of hydrogeochemistry and its kinetic process in a typical karst basin in Guizhou Province, China. The groundwater apparent age in study area is fro...
-
Article
A study of the interrelation between surface water and groundwater using isotopes and chlorofluorocarbons in Sanjiang plain, Northeast China
Surface water and groundwater are the main water resources used for drinking and production. Assessments of the relationship between surface water and groundwater provide information for water resource manage...
-
Article
Open AccessApplication of chlorofluorocarbons (CFCs) to estimate the groundwater age at a headwater wetland in Ichikawa City, Chiba Prefecture, Japan
To delineate the groundwater flow system in a basin, the groundwater age was estimated by analyzing chlorofluorocarbons (CFC-11, CFC-12 and CFC-113) in a typical headwater wetland in Ichikawa, Japan. Feasibili...
-
Article
Identifying interactions between river water and groundwater in the North China Plain using multiple tracers
Interactions between river water and groundwater have been used to help understand the movement of water and to evaluate water quality in the semi-arid area of the North China Plain (NCP). Stable isotopes, chl...
-
Chapter
Ecohydrological Assessments on Nitrogen Behavior in the Headwater Wetland
From the aspect of ecohydrology, a wetland is the discharge area for the groundwater system and supports habitats of high biodiversity. A typical headwater wetland in Chiba, Japan, was chosen to investigate ni...
