1、引言/ Foreword 水环境污染损失估算的难点 Estimation difficulties ◆迄今为止,环境污染损失估算的研究工作大都集中于 大气污染损失,而对于水污染的研究较少; Until now, more focuses are put on cost by air pollution than that by water pollution ◆相关数据信息较难获得,缺乏科学的剂量一反应关系; e The relevant data is unavailable and the essential dose response relationships are also in scarcity 中国环境规划院 Chinese Academy for Environmental Planning June.25,2004中国环境规划院 Chinese Academy for Environmental Planning June.25, 2004 5 1、引言/Foreword ◼ 水环境污染损失估算的难点 ◼ Estimation difficulties ◆ 迄今为止，环境污染损失估算的研究工作大都集中于 大气污染损失，而对于水污染的研究较少； ◆ Until now, more focuses are put on cost by air pollution than that by water pollution; ◆ 相关数据信息较难获得，缺乏科学的剂量－反应关系； ◆ The relevant data is unavailable and the essential dose￾response relationships are also in scarcity