EARTH AND ENVIRONMENT

Vol.41，No.2，Tot No.292 2013

　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　 　　

CONTENTS

Research Results

Spatiotemporal Characteristics and Diffusion Flux of Partial Pressure of Dissolved Carbon Dioxide (pCO2) in the River——Reservoir System as Exemplified by the Liuchonghe River, Hongjiadu Reservoir and Hongfenghu Lake………………………………………………………………………………………………………………PENG Xi et al（97）

Separation of Runoff Components Based on the Stable Isotopes and Hydrochemical Composition in a Small Karstic Basin……………………CHEN Xue-lian et al（104）

Characterization of a Bioflocculant Produced by Geotrichum Candidum ……………………………………………………………………………………WAN Ying-xin et al（111）

Study on the Loess Layer in the South of Liaoning Province Using the Optically Stimulated Luminescence……………………………………………ZHANG Wei et al（117）

Phosphorus Distribution Characteristics in Dry-wet Alteration Sediment of Fluctuation Zone in Three Gorges Reservoir Area……………………………CAO Lin et al（126）

Elemental Composition of Leaching Fluid of Sediments in Huangqihai Lake and Its Environmental Implication………………………………………………XU Min et al（132）

Analysis of Fluoride Pollution Situation and Source in Poor Rural Areas of Guizhou Province……………………………………………………………LIU Wen-dong et al（138）

The Mercury Contents in Raw Coals from Xinjiang Uygur Autonomous Region and the Estimation of Mercury Emission from Coal Combustion…………………………………………………………………………………………………………………………………………………………ZHOU Qiu-hong et al（143）

Applied Study

The Characteristics of Enrichment and Migration of Arsenic and Fluorine in Vegetables Planted in Improved Phosphogypsum Matrix………………LI Jin-juan et al（150）

Study on Selenium Contents and Combined Forms of Typical Selenium-rich Soil in the Central Part of Zhejiang Province……………………HUANG Chun-lei et al（155）

Pollution of Heavy Metals in the Sediments from the Lower Reaches of the Yangtze River and Its Potential Ecological Risk Assessment……………YANG Hui et al（160）

Particle Size Distribution Characteristics and Pollution Assessment of Heavy Metals in Street Dust of Suzhou City……………………………………………LI Qi et al（166）

Geological Disaster Risk Assessment Based on AHP Information Method……………………………………………………………………………………LIU Yang et al（173）

Water Environmental Fuzzy Analysis on Domestic Rivers ——A Typical Study Case………………………………………………………………………FENG Si-jing et al（180）

Special Subject and Review

Progress in Experimental Investigations on the Adsorption-reduction of Gold Complexes by Pyrite………………………………………………………LI Su-ning et al（185）