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| 1 | Distribution of heavy metals in sediments of the Pearl River Estuary,Southern China:Implications for sources and historical changes显示文摘The distribution of heavy metals(Pb,Zn,Cd and As) in sediments of the Pearl River Estuary was investigated.The spatial distribution of heavy metals displayed a decreasing pattern from the turbidity maxima to both upstream and downstream of the estuary,which suggested that suspended sediments played an important role in the trace metal distribution in the Pearl River Estuary.In addition,metal concentrations were higher in the west part of the estuary which received most of the pollutants from the Pearl River.In the sediment cores,fluxes of heavy metals were consistent with a predominant anthropogenic input in the period 1970-1990.From the mid-1990s to the 2000s,there was a significant decline in heavy metal pollution.The observed decline has shown the result of pollution control in the Pearl River Delta.However,it is noteworthy that the metal concentrations in the most recent sediment still remained considerably high.Taken together,the enrichment of heavy metals in sediments was largely controlled by anthropogenic pollution. | Feng Ye Xiaoping Huang Dawen Zhang Lei Tian Yanyi Zeng | 2012 | Journal of Environmental Sciences2012，24，4： | 18 |
| 2 | Statistical analysis of accumulation patterns of heavy metals in biota from the Pearl River Estuary, South China显示文摘 | ZENG Yanyi HUANG Xiaoping YE Feng | 2012 | Aquatic Ecosystem Health & Management2012，15，2： | 1 |
| 3 | Bank loan information and information asymmetry in the stock market:evidence from China显示文摘In this study,we use bank loan information to construct proxies for corporate transparency and examine whether these measures reflect information asymmetry in the stock market.Our analysis is based on a novel dataset of stock transactions and bank loans of all publicly listed firms on the Shenzhen Stock Exchange,covering January 2008 to June 2013.We find that firms with outstanding loans have a lower level of information asymmetry in the stock market,whereas firms with defaulted loans have a higher level of asymmetry.Further evidence demonstrates that the effect of loan default on information asymmetry in the stock market is more pronounced when these loans are borrowed from joint-equity commercial banks or multiple banks and when the default occurs under inactive market conditions.Our results remain robust to a series of endogeneity and sensitivity tests and provide suggestive evidence of a close connection between the credit loan and stock markets. | Yanyi Ye Yun Wang Xiaoguang Yang | 2022 | Financial Innovation2022，8，1： | 1 |
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