1Review on Ecological Toxicity of Chemicals to Aquatic AnimalsWANG Yi-zhen, HUANG Sui-liang, LIN Chao, ZHOU Xu-shen7-152Based on the Hydrological Model to Build Integrated Drought Index in Luanhe BasinQU Hai-chen, HU Yan-yang, LIU Xiao-dong31-34,423Sea Reclamation Impacts Analysis on Flood Control of Haihe River EstuaryWANG Yu-fang, REN Jin-gang, YANG Shi-bin, ZHOU Xiao-cui, LIU Peng, HUANG Lei37-394Analysis on the Collapsibility of Secondary Loess Pinglu Industrial Park Shanxi ProvinceCHEN Liu, LI Song-lei55-58,60