Xingxing Cao

Xingxing Cao
Guizhou University · College of Resource and Environmental Engineering

Doctor of Philosophy

About

27
Publications
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285
Citations

Publications

Publications (27)
Article
Full-text available
Study region Daiyang River Basin, a typical karst river basin impacted by mining activities in Guizhou, Southwest China. Study focus Rivers are fundamental components of regional water security, but they are facing potentially toxic elements (PTEs) pollution caused by mining activities. This study investigated the concentration, behavior, risks and...
Article
Wastewater treatment plants (WWTPs) are an important manifestation of the impact of urbanization on aquatic ecosystems, and the influences of effluents discharge from WWTPs on receiving river carbon biogeochemical cycle processes has been a research hotspot. However, our knowledge about potential impacts of WWTP effluents on dissolved inorganic car...
Article
The dissolved carbon cycling in river system fueled by wastewater treatment plant effluent have been a research hotspot. However, the composition of dissolved carbon (DC) in wastewater effluents from karst regions remains poorly understood, resulting in a lack of clarity regarding its impact on the dynamics of dissolved carbon in karst rivers. To a...
Article
Full-text available
Carbon dioxide (CO2) emissions from aquatic ecosystems are an important component of the karst carbon cycle process and also a key indicator for assessing the effect of karst carbon sinks. This paper reviewed the CO2 partial pressure (pCO2) and its diffusion flux (FCO2) in karst surface aquatic ecosystems, mainly rivers, lakes, and reservoirs, and...
Article
Dissolved organic matter (DOM) is widely present in surface water environments and plays a critical role in the biogeochemical cycling of metal ions. Metal ions in acid mine drainage (AMD) have seriously polluted karst surface water environments, but few studies have explored interactions between DOM and metal ions in AMD-disturbed karst rivers. He...
Article
The remediation of acid mine drainage (AMD) is particularly challenging because it contains a large amount of Fe3+ and a high concentration of SO42-. To reduce the pollution caused by SO42- and Fe3+ in AMD and realize the recycling of solid waste, this study used distillers grains as raw materials to prepare biochar at different pyrolysis temperatu...
Article
Full-text available
Surface rivers play an essential role in carbon cycle processes in karst regions. However, the CO2 diffusion flux from karst rivers under the influence of urbanization has been scarcely examined in the literature. Along these lines, in this work, the CO2 partial pressure (pCO2) and its degassing in a typical karst river (Nanming River and its tribu...
Article
Acid mine drainage (AMD) threatens the water quality and safety of karst river water (KRW), and the formation of secondary iron or aluminum-bearing minerals during the mixing of AMD with KRW plays a crucial role in the migration of elements. However, the variations in the mineralogical, morphological and elemental compositions of secondary minerals...
Article
Full-text available
Caohai Lake is a typical natural lake-type karst plateau wetland, which is sensitive to environmental changes, and the release of dissolved organic nitrogen (DON) in sediment is a potential factor of nitrogen pollution in this lake. Therefore, we aimed to reveal the temporal and spatial distribution characteristics and source analysis of DON in kar...
Preprint
Full-text available
Surface rivers play an essential role in the carbon cycle processes in karst regions; however, less attention has been given to CO 2 emissions from karst rivers under the influence of urbanization. In this study, we investigated CO 2 partial pressures ( p CO 2 ) and degassing in a typical karst river (Nanming River and its tributaries) affected by...
Article
Acid mine drainage (AMD) has caused serious pollution in the surface water environments of karst areas, but the effect of AMD on the dissolved inorganic carbon (DIC) dynamics in the receiving karst rivers remains poorly understood. The AMD and karst river water were sampled from the Yangliujie River watershed in Southwest China, and mixed different...
Preprint
Full-text available
The Caohai is a typical natural lake-type karst plateau wetland, which is sensitive to environmental changes, and the release of dissolved organic nitrogen (DON) in the sediment is a potential factor of nitrogen pollution in the lake. Therefore, this study aimed to reveal the temporal and spatial distribution characteristics and source analysis of...
Article
Full-text available
Nitrate is one of the most common pollutants in aquatic ecosystems, particularly in highly vulnerable karst aquifers. In Caohai Lake, an important karst wetland in southwestern China, karst surface water and groundwater are important recharge water sources, and nitrates flow into the wetland along with the surface water and groundwater, degrading t...
Article
The Caohai Lake wetland in Weining County, Guizhou Province, is the largest karst wetland in China, and karst groundwater is an essential source of recharge and material. This study collected groundwater from the Caohai Lake catchment during the wet season, dry season, and flat season, and the main ion components of the groundwater were analyzed. T...
Article
In order to explore the temporal and spatial distribution of the partial pressure of carbon dioxide (pCO2) and its diffusion flux in the surface water of karst wetland, taking lake Caohai, the largest karst wetland in China, as the research object. The surface wetland water of Lake Caohai was systematically collected through the method of grid plac...
Article
Acid mine drainage (AMD) is a major source of water pollution in coal mining areas. The Maoshitou Reservoir in the Xingren Coalfield, Southwest China, is severely acidified because of ongoing AMD discharges in recent decades. In this study, the concentrations of rare earth elements (REEs) were determined in parent rocks, and also in water and sedim...
Article
Sulphur plays a critical role in the biogeochemistry of wetlands. SO4²⁻ is the sulphur form that is most commonly assimilated by plants, and it is the medium of sulphur transformation in wetland ecosystems. The Caohai wetland is an important ecosystem on the Yunnan–Guizhou Plateau, SW China, and karst water is the most important water source in thi...
Article
The Caohai Wetland serves as an important ecosystem on the Yunnan–Guizhou Plateau and as a nationally important nature reserve for migratory birds in China. In this study, surface water, groundwater and wetland water were collected for the measurement of environmental isotopes to reveal the seasonal variability of oxygen and hydrogen isotopes (δ18O...
Article
Water and sediment samples were collected from Caohai basin. The distribution of nitrogen and phosphorus concentrations in water and the release characteristics of nitrogen and phosphorus from the sediment were analyzed. The results showed that total nitrogen and total phosphorus concentrations of most inflow river water were higher than those of o...
Article
The Caohai Wetland, Guizhou Province, China, is a nationally important nature reserve. In this study, we examined the major ion composition of the inflows to, and the water in, the Caohai Wetland. The main sources of major ions in the wetland water were the groundwater and river water inflows, the chemical compositions of which were controlled by t...
Article
Full-text available
Wetlands contain a large proportion of the world’s carbon, of which dissolved inorganic carbon (DIC) is one of the important fractions in wetland carbon cycle. We collected groundwater, river water, and wetland water from the Caohai catchment to investigate the isotope composition of DIC and inorganic carbon cycling. The main sources of groundwater...
Article
Full-text available
This study presents bulk chemical compositions of the Tongmuling soil profile, which developed on dolostone, and the overlying strata covering the bedrock in the central Guizhou province (southern China). The chemical weathering characteristics of the studied profile were investigated and the inheritance relationships between the terra rossa and ov...

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