Article
Green & Sustainable Science & Technology
Siqi Liu, Biao Peng, Jianfeng Li
Summary: Rapid urbanization in China has led to significant differences between urban and rural areas, resulting in the emergence of urban villages. This study conducted a case study on a typical urban village to assess heavy metal pollution and ecological risk in soil. The results showed that the concentrations of lead, copper, zinc, and nickel in the soil were significantly higher than background values. The pollution problem is further complicated by agricultural activities, lack of clear division between different functional zones, and general lack of environmental awareness, posing a serious threat to public health.
Article
Environmental Sciences
Ravindra Singh Thakur, Aditya Kumar, Onila Lugun, Nasreen Ghazi Ansari, Satgur Prasad, Triparna Das, Neha Gupta, Devendra Kumar Patel
Summary: In recent years, there has been increasing attention on the deposition of toxicants from road traffic and its impact on food items. This study focused on heavy metal pollution in street vended noodles and its association with different environmental sources. The results showed that several heavy metals exceeded the allowable limits for food products. Street vended noodles sold on high traffic density streets had higher levels of heavy metal contamination due to atmospheric deposition. Health risk assessment indicated an elevated non-carcinogenic hazard to consumers of such street vended food.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Engineering, Environmental
Qing Xie, Bozhi Ren, Xinping Deng, Wei Yin, Yulong Lu
Summary: To understand the environmental problems of heavy metal pollution in soils caused by antimony smeltery in central and southern China, the pollution levels, sources, and risks were studied using various methods. The results showed that the contents of heavy metals in soils exceeded the background values, and a significant portion of the studied area was moderately polluted. The main sources of contamination were agricultural activities and antimony smeltery, with contributions from industrial activities and natural sources as well. Risks to human health were found to be unacceptable, particularly in relation to oral ingestion of arsenic.
STOCHASTIC ENVIRONMENTAL RESEARCH AND RISK ASSESSMENT
(2023)
Article
Environmental Sciences
Haiwei Zhang, Fei Zhang, Jia Song, Mou Leong Tan, Hsiang-te Kung, Verner Carl Johnson
Summary: The study analyzed the pollution characteristics and sources of heavy metal elements in the Zhundong mining area in Xinjiang for the first time, as well as evaluating the health risks and influencing factors using Monte Carlo simulation. Results showed that coal combustion, transportation, and atmospheric dust were significant sources of heavy metal pollution in the area. The research contributes to better soil management, remediation, and pollution control in Xinjiang's mining areas.
ENVIRONMENTAL RESEARCH
(2021)
Article
Environmental Sciences
Jing Wang, Yijia Zheng, Yi Li, Yingbin Wang
Summary: This study analyzed the concentration of heavy metals in surface seawater in the Zhoushan fishing ground during the wet and dry seasons. Four potential sources of heavy metal pollution were identified using a positive matrix factorization model and correlation analysis. The health risk assessment revealed that the non-carcinogenic risk for adults and children was acceptable, and the carcinogenic risk was at a low level. Industrial and traffic sources were found to be the main contributors to pollution.
MARINE POLLUTION BULLETIN
(2023)
Article
Environmental Sciences
He Xiao, Asfandyar Shahab, Feng Ye, Gangjian Wei, Jieyue Li, Liming Deng
Summary: This study investigated the distribution, pollution level, quantitative source apportionment, and source-specific ecological risk of 10 heavy metals in surface sediments of the Pearl River Estuary. The results showed that the heavy metals were enriched in the inner Pearl River Estuary, with mercury posing an extremely high pollution level and cadmium and zinc showing moderate to high contamination potential. The study also identified natural geogenic and industrial manufacturing sources as the main contributors to the heavy metal pollution. However, the source-specific risk assessment indicated that mixed anthropogenic sources, particularly from surrounding cities, strongly affected the ecological risks.
MARINE POLLUTION BULLETIN
(2022)
Article
Environmental Sciences
Fu Chen, Zafar Iqbal Khan, Asma Zafar, Jing Ma, Muhammad Nadeem, Kafeel Ahmad, Shehzadi Mahpara, Kinza Wajid, Humayun Bashir, Mudasra Munir, Ifra Saleem Malik, Asma Ashfaq, Ilker Ugulu, Yunus Dogan, Yongjun Yang
Summary: The study suggests that the harmful effects of wastewater irrigation on soil and wheat can be controlled, but the high cobalt concentration in wastewater can be toxic to living organisms and pose potential health risks with accumulation over time.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Environmental Sciences
Danrui Sheng, Xianhong Meng, Xiaohu Wen, Jun Wu, Haijiao Yu, Min Wu
Summary: Accumulation of heavy metal(loid)s in groundwater poses serious ecological and health concerns globally. The study in Zhangye Basin revealed high levels of Mn, Fe, and As in groundwater, with industrial-agricultural activities identified as the major source of health risks. Approximately 3.5% of groundwater samples showed moderate to high pollution levels.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Yang Lin, Kai Luo, Zilin Su, Yang Wu, Wei Xiao, Mingxun Qin, Jing Lin, Shijie Zhang, Yi Zhang, Yuqi Jiang, Bojin Peng, Yujing Guo, Xuan Wang, Yijun Wang
Summary: The properties of heavy metals in soil play a key role in protecting the urban ecosystem and predicting environmental risks. This study examined the wetland of East Dongting Lake to investigate the sources and distribution characteristics of heavy metals in soil. The results showed correlations between certain heavy metals and soil organic carbon, and identified potential ecological risks associated with heavy metal contamination.
Article
Environmental Sciences
Yanjun Ren, Meng Lin, Qingming Liu, Zhonghao Zhang, Xufeng Fei, Rui Xiao, Xiaonan Lv
Summary: The study quantitatively assessed heavy metal pollution and risks in a typical soil-rice system on the southeast coast of China. Results showed that Hg, Cd, and Cu were the main pollutants in soils; Cd content in rice grains posed significant health risks for adults and children. Sources of heavy metal pollution in the soil included natural sources, agricultural activities, and industrial activities.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Multidisciplinary Sciences
Xingyong Zhang, Qixin Wu, Shilin Gao, Zhuhong Wang, Shouyang He
Summary: This study analyzed the distribution, sources, water quality, and health risks associated with dissolved heavy metals in major rivers in Wuhan using various analytical methods. The results revealed significant spatial variability in heavy metal content, with arsenic and antimony posing the highest pollution risk.
Article
Engineering, Environmental
Mengchu Wei, Aifang Pan, Runyong Ma, Hui Wang
Summary: This study assessed the contamination level and source of heavy metals in agricultural soil in central Shiquan County, revealing that chromium, copper, zinc, arsenic, lead, nickel, cadmium, and mercury exceeded their background values but not the risk control standards for agricultural soil pollution in China. The heavy metals in the soil were mainly derived from industrial pollution, except for lead which originated from soil parent material. The soil environment poses no non-carcinogenic effects on adults and children, but the high risk of cancer caused by chromium in local residents should be addressed.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2023)
Article
Engineering, Environmental
Jun Xu, Yi Wu, Shengli Wang, Yufan Wang, Suhuang Dong, Zhaoming Chen, Liang He
Summary: This study focused on the sources of heavy metals in soil and their contribution to health risks in an industrial and mining city. The results showed that human activities, such as traffic emissions and industrial and agricultural activities, were the primary sources of heavy metals in the soil. The study also highlighted the potential health risks associated with these heavy metals.
ENVIRONMENTAL GEOCHEMISTRY AND HEALTH
(2023)
Article
Green & Sustainable Science & Technology
Xufeng Fei, Zhaohan Lou, Rui Xiao, Zhouqiao Ren, Xiaonan Lv
Summary: This study analyzes the interaction between soil quality and heavy metal pollution. The results show that with increasing soil quality, heavy metal contamination and ecological and health risks increase significantly. Industrial activities, agricultural activities, and coal combustion are the major pollution sources. Policies should be formulated to control industrial pollution and improve the ecological environment.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Chemistry, Multidisciplinary
Haixia Zhang, Angzu Cai, Xiaojian Wang, Litao Wang, Qing Wang, Xiaoqi Wu, Yingqun Ma
Summary: This study evaluated the pollution and risk of heavy metals in surface soil in Handan city using multiple methods, identifying traffic, industrial, and natural sources as the main pollution sources. It was found that Cd and Cr were the heavy metals with higher risks in the study.
APPLIED SCIENCES-BASEL
(2021)
Article
Environmental Sciences
Min Liu, Xiaoyong Bai, Qiu Tan, Guangjie Luo, Cuiwei Zhao, Luhua Wu, Zeyin Hu, Chen Ran, Yuanhong Deng
Summary: The study found that the karst areas in southwestern China, accounting for only 8.4% of the country's mainland, made significant contributions to soil conservation and net primary productivity. Human activities were identified as the main driver behind the increase in NDVI, with a high coincidence rate between areas dominated by human activities and synergy control areas.
GEOCARTO INTERNATIONAL
(2022)
Article
Geography, Physical
Chaojun Li, Pete Smith, Xiaoyong Bai, Qiu Tan, Guangjie Luo, Qin Li, Jinfeng Wang, Luhua Wu, Fei Chen, Yuanhong Deng, Zeyin Hu, Yujie Yang, Shiqi Tian, Qian Lu, Huipeng Xi, Chen Ran, Sirui Zhang
Summary: The chemical weathering of silicate rocks contributes to the global carbon cycle through the production of bicarbonate and carbonate minerals. This study quantifies the effects of carbonate minerals and exogenous acids on the carbon fluxes from the chemical weathering of granite and basalt, using a compilation of hydro-chemistry samples and hydro-meteorological datasets. The results highlight the importance of carbonate minerals and exogenous acids in the global carbon cycle.
GLOBAL AND PLANETARY CHANGE
(2023)
Article
Engineering, Civil
Biqin Xiao, Xiaoyong Bai, Cuiwei Zhao, Qiu Tan, Yangbing Li, Guangjie Luo, Luhua Wu, Fei Chen, Chaojun Li, Chen Ran, Xuling Luo, Huipeng Xi, Huan Chen, Sirui Zhang, Min Liu, Suhua Gong, Lian Xiong, Fengjiao Song, Chaochao Du
Summary: The study examined the relationship between carbon use efficiency (CUE) and water use efficiency (WUE) of karst vegetation in China and climate change. It was found that CUE increased with precipitation, while WUE decreased with solar radiation. There were differences in CUE and WUE among different land use types, with grassland having higher CUE and lower WUE compared to forest land. This study contributes to understanding the responses of ecosystems in karst areas to climate change, optimizing water and soil resources management, and promoting the healthy development of the ecological environment.
JOURNAL OF HYDROLOGY
(2023)
Article
Environmental Sciences
Xuling Luo, Xiaoyong Bai, Chaoyong Shen, Ruidong Yang, Yue Cao, Luhua Wu, Fei Chen, Chen Ran, Min Liu, Yu Zhang
Summary: Soil erosion is a global soil degradation problem that endangers land, freshwater, and oceans. Rainfall erosivity has led to an increase in soil erosion rate worldwide, while vegetation restoration serves as a protective measure against soil erosion. Therefore, studying the impact of precipitation and vegetation on the spatial distribution of soil erosion is crucial for understanding the erosion mechanism. Based on the RUSLE model, a global soil erosion dataset from 2000 to 2015 (0.25 degrees x 0.25 degrees) was created to assess the extent of global soil erosion. The data revealed that soil erosion was on the rise in 70.80% of the study area, with precipitation being the predominant factor. Spatially, erosion was mainly concentrated in Asia and North America, with Asia experiencing a decreasing trend in erosion during the study period. Results also showed that erosion primarily occurred in the temperate zone, accounting for 39.97% of the area. Precipitation and vegetation significantly increased in 24.43% and 16.74% of the regions, respectively. However, in 29.12% and 53.81% of the regions, precipitation and vegetation had a negative impact on erosion. These findings contribute to a deeper understanding of the erosion mechanism.
GEOCARTO INTERNATIONAL
(2023)
Article
Ecology
Min Liu, Xiaoyong Bai, Qiu Tan, Guangjie Luo, Cuiwei Zhao, Luhua Wu, Fei Chen, Chaojun Li, Yujie Yang, Chen Ran, Xuling Luo, Sirui Zhang
Summary: This study quantified the contributions of climate change and human activities to global net ecosystem productivity (NEP). The results showed that human activities had a much larger contribution to NEP growth compared to climate change, with CO2 concentration being the largest positive contributor. Interestingly, climate change enhanced the positive impact of human activities on NEP in a significant portion of the world.
FRONTIERS IN ECOLOGY AND EVOLUTION
(2023)
Article
Environmental Studies
Biqin Xiao, Xiaoyong Bai, Qiu Tan, Yangbing Li, Cuiwei Zhao, Guangjie Luo, Luhua Wu, Fei Chen, Chaojun Li, Chen Ran, Huipeng Xi, Sirui Zhang, Min Liu, Lian Xiong, Fengjiao Song, Chaochao Du
Summary: This study investigates the effects of nitrogen deposition (ND) and carbon dioxide (CO2) on carbon-use efficiency (CUE) and water-use efficiency (WUE). The results show that ND and CO2 enhance the positive contribution to CUE and WUE. ND and CO2 explain a significant proportion of the increase in CUE and WUE, highlighting the importance of ND in the driving mechanism.
Review
Multidisciplinary Sciences
Xiaoyong Bai, Chen Ran, Jing'an Chen, Guangjie Luo, Fei Chen, Biqin Xiao, Mingkang Long, Zilin Li, Xiaoyun Zhang, Xiaoqian Shen, Shu Yang, Xinhai Lin, Chaojun Li, Sirui Zhang, Lian Xiong, Shijie Wang
Summary: China has the largest distribution of carbonate karst in the world, with the southwest region centered in Guizhou being a critical ecological security barrier. Scientific diagnosis of the health and sustainability of karst ecosystems is essential for ecological restoration and sustainable development. In this paper, the evolution and development of karst landforms are summarized, along with five aspects related to the calculation of weathering and soil formation rate, diagnosis of soil water, evaluation of soil and water loss, interpretation and evolution of rocky desertification, and measurement of ecosystem services. The methods and models for diagnosing the health of karst ecosystems must be improved and innovated to accurately depict the response process of karst ecosystems to climate change and human activities.
CHINESE SCIENCE BULLETIN-CHINESE
(2023)
Article
Agronomy
Yingying Xue, Xiaoyong Bai, Cuiwei Zhao, Qiu Tan, Yangbing Li, Guangjie Luo, Luhua Wu, Fei Chen, Chaojun Li, Chen Ran, Sirui Zhang, Min Liu, Suhua Gong, Lian Xiong, Fengjiao Song, Chaochao Du, Biqin Xiao, Zilin Li, Mingkang Long
Summary: This study investigates the response of Chinese vegetation photosynthetic phenology to climate change and its impact on net primary productivity using chlorophyll fluorescence data. The results show that the photosynthetic period has advanced in China, primarily controlled by temperature and precipitation. Climate change indirectly increases vegetation productivity by advancing the photosynthetic period.
AGRICULTURAL AND FOREST METEOROLOGY
(2023)
Article
Environmental Sciences
Xiao Wei, Xiaoyong Bai, Xuefeng Wen, Li Liu, Jie Xiong, Changlong Yang
Summary: This study investigated the migration regulation of Cd during soil formation and erosion in karst areas. The results demonstrate that soil Cd concentration and bioavailability are both significantly higher in alluvium compared with those in eluvium. The Cd isotopic fingerprint revealed that the active Cd in the alluvium of the study profile was probably derived from the corrosion of carbonate rocks rather than by eluviation of the eluvium. The corrosion of carbonate rocks is a substantial natural Cd source and poses significant potential risks to the ecological environment.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Environmental Sciences
Chen Ran, Xiaoyong Bai, Qiu Tan, Guangjie Luo, Yue Cao, Luhua Wu, Fei Chen, Chaojun Li, Xuling Luo, Min Liu, Sirui Zhang
Summary: Karst ecosystems are crucial for billions of people, and accurately diagnosing and evaluating their health is necessary for socioeconomic development. However, current evaluation methods have limitations, particularly in considering the impact of soil formation rate on ecosystem health. A new index was established to represent the actual health status of karst ecosystems, revealing that the soil formation rate threatens the health of 28% of global karst ecosystems, covering an area of 594 km2. A dataset of karst ecosystem health index values from 2000 to 2014 was created, showing that 75.91% of the areas were unhealthy. This study emphasizes the contribution of soil formation rate to karst ecosystem health and provides a new method for accurate evaluation, enhancing future research and management.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Environmental Sciences
Luhua Wu, Xiaoyong Bai, Yichao Tian, Yue Li, Guangjie Luo, Jinfeng Wang, Fei Chen
Summary: Based on the CRU dataset, this study used the Theil-Sen median trend, Mann-Kendall trend test method, continuous wavelet transformation, and the Hurst exponent to analyze cooling trends in different zones. The results show that approximately 8,305,500 km2 of land surface has been cooling since the 1900s, covering five continents and 32 countries. The average cooling rate was -0.24℃/century, with the maximum cooling rate being -1.40℃/century, 1.43 times the average global land warming rate of 0.98℃/century. The study also identified the influence of ocean currents and different time scales on the cooling zones.
Article
Green & Sustainable Science & Technology
Xiaoyong Bai, Sirui Zhang, Chaojun Li, Lian Xiong, Fengjiao Song, Chaochao Du, Minghui Li, Qing Luo, Yingying Xue, Shijie Wang
Summary: The accurate determination of carbon-neutrality capacity (CNC) is crucial for emissions and climate change policies. However, there is a lack of a systematic diagnostic method considering the rock chemical weathering carbon sink (RCS). This study establishes a CNC index (CNCI) model for Guizhou region, finding that Guizhou has a significant contribution to carbon sinks and a high CNCI compared to China and the world.
ENVIRONMENTAL SCIENCE AND ECOTECHNOLOGY
(2023)
Article
Environmental Studies
Fei Chen, Xiaoyong Bai, Fang Liu, Guangjie Luo, Yichao Tian, Luoyi Qin, Yue Li, Yan Xu, Jinfeng Wang, Luhua Wu, Chaojun Li, Sirui Zhang, Chen Ran
Summary: This paper analyzes long-term and spatial changes in forest cover in China using historical maps and remote sensing images. The study finds that the forest area in the selected county showed a trend of decreasing and then increasing. There are significant differences in regions with changes in forest cover under different historical periods.
Article
Environmental Studies
Chaochao Du, Xiaoyong Bai, Yangbing Li, Qiu Tan, Cuiwei Zhao, Guangjie Luo, Luhua Wu, Fei Chen, Chaojun Li, Chen Ran, Xuling Luo, Huipeng Xi, Huan Chen, Sirui Zhang, Min Liu, Suhua Gong, Lian Xiong, Fengjiao Song, Biqin Xiao
Summary: This study estimated the magnitude of NBP in 31 Chinese provinces (except Hong Kong, Macau, and Taiwan) from 2000 to 2018, and clarified its temporal and spatial evolution. The results show that NBP in China is mainly distributed in southwest and south China, with a total amount of about 0.21 Pg C/yr(-1).
Article
Environmental Studies
Luhua Wu, Shijie Wang, Xiaoyong Bai, Fei Chen, Chaojun Li, Chen Ran, Sirui Zhang
Summary: Using MRA, CWT, XWT, and WTC methods, this study investigated the relationship between climate change and hydrological processes in a typical karst watershed. The main findings are that rainfall is the primary factor affecting runoff changes, with a positive and negative interlacing effect, while temperature and evaporation have a mainly negative impact on runoff change.
