EARTH AND ENVIRONMENT 

Vol. 43, No.2, Tot No.304  2015 

CONTENTS 

Research Results 

Effect of Biochar Addition on DOC Leaching from Two Different Types of Soils ……………………………………………XING Ying et al（133） 

Significance and Uncertainty of Speleothem ￣Stalagmite Proxies ………………………………………………………ZHANG Meiliang et al（138） 

Release Characteristics of Heavy Metals from Polluted Paddy Soil around a Gangue Field in Moutain Areas of Central Guizhou Province, China ……………………………………………………………………………………………………………………………………………LIU Lulu et al（152） 

Distribution of Black Carbon in the Sediments from the Yangtze River and Their Correlations with Polycyclic Aromatic Hydrocarbons ……………………………………………………………………………………………………………………………………………… HUANG Liang et al（159） 

Geomorphologic Fractal Dimension Analysis of Geological Disasters in Danba Area at the Upstream of the Dadu River, China ………………………………………………………………………………………………………………………………………………ZHAO Yinbing et al（167） 

Characteristics of Oxidation Profile and Acidification Mechanism of a Carbonate Type Tailings, Huangshaping Pb-Zn mine (Hunan Procince, China)………………………………………………………………………………………………………………………………LEI Liangqi et al（173） 

Major Ion Chemistry and Their Sources ofKarstic Ground Water from the Heqing West Mountain, China during Flood and Dry Seasons ……………………………………………………………………………………………………………………………………………… HUANG Keyun et al（183） 

Applied Study 

Distribution and Environmental Geochemistry Characteristics of Heavy Metals in Surface Sediment from Zhelin Bay to Dacheng Bay, Guangdong Province, China……………………………………………………………………………………………………………YUAN Guoming et al（190） 

Pollution Characteristics of Polycyclic Aromatic Hydrocarbons in PM2.5 during the Heating Season in Taiyuan City, China ………………………………………………………………………………………………………………………………………………… GUO Lili et al（198） 

Temporal-spatial Variation on Magnetic Susceptibility of Street Dust from Jinhua City, China………………… ZHAO Qinglei et al（205） 

Macropores Study on Vadose Zones of Hillslope Based on Fractal Dimension……………………………………………ZHANG Decheng et al（210） 

DIC Transport Characteristics of the Yellow River under the influence of Xiaolangdi Reservoir …………… ZHANG Yongling et al（217） 

Special Subject and Review 

Research Status of Climatic Implications of Oxygen and Carbon Isotopic Compositions in Cave Drip Water-Carbonate Systems ………………………………………………………………………………………………………………………………………………LI Linglong et al（223） 

A Review of Young Groundwater Dating ………………………………………………………………………………………………… LEI Yan et al（233） 

Expeviment Research 

A Simulation Study on Release of Phosphorus from the Sediment in Lake Hongfeng, Guizhou Province, China ………ZHANG Hong et al（243） 

Review on Mass Spectrographic Analysis of Plutonium Isotopes in Soils and Sediments………………………………… SHI Yanjie et al（252） 

An Experimental Study on Heavy Metal Geochemistry of Tailings of Shouxin Peru Mining Corporation……………… ZHU Laidong et al（263）