EARTH AND ENVIRONMENT  

CONTENTS 

Research Results 

Characteristics of N, P and K Contents in Rhizosphere Soil of Common Pteridophyte in the Maolan Karst Area ………………………………………………………………………………………………………………………………… LUO Xu-qiang et al（269） 

Chronological Application of 210Pb and 137Cs in the Nile Delta and Its Practical Implication ………………………  GU Jia-wei（279） 

Carbonate System and Partial Pressure of CO2 in the Subtropical Jiulongjiang River,China: A Discussion on Controlling Mechanisms ………………………………………………………………………………………………………………………………………………… QI Di et al（286） 

Spatial Distribution of Surface Water Chemical Components in the Middle and Lower Reaches of the Chishui River Basin ……………………………………………………………………………………………………………………………………………… LUO Jin et al（297） 

Adsorption-desorption Kinetic Characteristics of Hg2+ in Surface Sediments and Natural Biofilm from the Watershed ………………………………………………………………………………………………………………………………………  LI Qing-Zhao et al（306） 

Pollution Characteristics of PM2.5 in Guiyang and Its Influence on Meteorological Parameters …………………   LIU Na et al（311） 

Characteristics of Chemical Compositions of Precipitation in a Typical Acid-Rain City in Guizhou Province ………………………………………………………………………………………………………………………………………  ZHAO Xiao-yun et al（316） 

Carbon Sequestration during Karst Water Cycle Process in the Maolan Primary Forest Area…………………  KANG Zhi-Qiang et al（322） 

Source Analysis of Heavy Metals in the Street Dust of Quanzhou City ………………………………………………  YU Rui-lian et al（328） 

The Influence of Different Ions on the Migration Behavior of Black Colloids in Soil ………………………… XU Duan-ping et al（333） 

Elemental Geochemistry Evidence for Sedimentary Environment of Ordovician Siltstones in Zhaoqing, Guangdong Province ………………………………………………………………………………………………………………………………………… ZHOU Ken-ken et al（340） 

The Type, Carbon and Oxygen Isotopic Composition, and Sedimentary Environment of Dolomites in Yuntaishan, Shibing County, Guizhou Province ………………………………………………………………………………………………………………………………QIAO Wen-lang et al(347） 

Effects of Brominated Flame Retardants on the Bacterial Leaching of Copper from Waste Printed Circuit Boards ……………………………………………………………………………………………………………………………………………… CHEN Shu et al（355） 

Bio-oxidation of Chalcopyrite by Acidithiobacillus ferrooxidans ………………………………………………THAI Truong-giang et al（361） 

Applied Study 

Heavy Metal Contents of Farmland Soil and Pollution Evaluation around Coal Mines in Suzhou City, Anhui Province ……………………………………………………………………………………………………………………………………………SU Hai-min et al（369） 

Pollution Characteristics and Risk Assessment for the Soil from an Open Dumping Site in a Small Town. Shandong Province ……………………………………………………………………………………………………………………………………………HUANG Ying et al（375） 

Analysis of Urban Relative Humidity and Dry Island Effect in Lingcang City,Yunnan Plateau ……………………… HE Ping et al（383） 

Purification Effect of Eutrophic Water Body by Purple-root Water Hyacinth ……………………………………  ZHAN Ju-hong et al（389） 

Research on the Three-dimensional Quantitative Assessment Method for the Ecological Environment of the Liaoxi Mine …………………………………………………………………………………………………………………………………… ZHAO Xiao-liang et al（397） 

Spatial and Temporal Variations in Vegetation Coverage in Karst Areas under the Background of Ecological Recovery: A Case Study in the Central Area of Guizhou Province …………………………………………………………………………………………… YANG Shi-fan et al（404） 

The Controlled Atmospheric System That Can Produce Efficient、Stable and Single Mercury Isotope and its Application …………………………………………………………………………………………………………………………………………  YAN Zi-yun et al（413） 

Application of AHP to Geological Hazards Risk Assessment in a County, hongqing ……………………………WANG Xiao-jiang et al（419） 

A Profit Distribution for the Stakeholders Involved in Mineral Resource Development Based on Shapley Values ………………………………………………………………………………………………………………………………………YANG Cong-ming et al（424） 

Research on and Application of Oxidation-reduction Potential ………………………………………………………… XIANG Jiao et al（430） 

Cognitive Qestionnaire Survey on Mercury and Occupational Mercury Exposure in Pediatric Medical Staff ……………………………………………………………………………………………………………………………………………  YANG Yan et al（437） 

Special Subject and Review 

Advances in the Study and Application of Calcium Isotopes in Forest Ecosystem …………………………………  LI Fu-shan et al（442） 

Progress in Treatment of Phenol-containing Wastewater by Using Photocatalysis ……………………………… HU Chang-feng et al（450） 

Progress in Research on Plant Effect on N2O Emission Flux from Terrestrial Ecosystem … …………………… ZHU Kun-jie et al（456）