关键词: 淡水湖泊, 水环境安全, 保障对策

Abstract: Based on statistical data in 2006, the indices of population density, population concentration, urbanization, economic strength, and economic, agricultural and industrial concentration of the regions surrounding Chinese ten major freshwater lakes are calculated, which indicate that most regions around freshwater lakes are not only the areas with relative concentrated population and high urbanization level, but also the polar of increasing economy and superior agriculture products bases for the positioned provinces or cities, and their development deeply depends on lakes' fresh water resources supply. On the other hand, existing documents show that water environment security situations of Chinese freshwater lakes are nowbecoming more and more serious, facing the problems of sharp falling of area, continuously worsening of water quality, rather serious eutrophication, bad damage of lake shores and dramatic decreasing of biodiversity. As water environment security of freshwater lakes deals with the overall situation of regional or national societies and economies, the authors suggest improving freshwater lake environmental monitoring and early-warning system, constructing more diversified prevention and treatment system for freshwater lake environmental problems, and strengthening technology support for key areas.

Key words: freshwater lake, water environment security, guaranteeing countermeasures