汉江水华问题研究

Study on algalbloom in Hanjiang River

概述了汉江 2 0世纪 90年代发生的三次水华现象的特征 ,并从水质条件、气温、水文情势三个方面分析了诱发水华的成因机理。针对水质污染控制和汉江水量调配对水华所带来的影响 ,探讨水华预防措施。其结论为 :尽快治理汉江富营养化污染是解决水华问题的关键 ;考虑到兴建三峡工程和南水北调中线工程将对汉江环境带来不利影响 ,要采取一定的配套措施将工程的损失减少到最小。

The characters of three algalbloom phenomena in Hanjing River in the nineties of 20th century are summarized.The causes and mechanisms of algalbloom occurrence are analyzed from the point of water quality condition, air temperature, hydrological condition.To counter the influences of water pollution control and water quantity distribution of Hanjiang River on algalbloom, the preventing measures are discussed.The conclusions are that administering eutrophication pollution of Hanjiang River as soon as possible is the key to solve the issue and some assistant measures must be taken for decreasing the losing of projects to the minimum, considering the disadvantage influence caused by Three Gorges and water Transfer Project from South to North (middle route) on water environment of Hanjiang River.