This paper deals with the influences of Hg to the morpha. some physiological and biochemical parameters such as chlorophyll(chl), superoxide dismutase(SOD), catalase(CAT) of a kind of submerged macrophyte Egeria najas;

• 本文研究了Hg~(2-)对沉水植物细叶蜈蚣草外部形态、叶片叶绿素(chl)含量、超氧化物歧化酶(SOD)和过氧化氢酶(CAT)活性等几个生理生化指标的影响：从水体主要理化指标和生物营养元素的变化情况研究了Hg~(2+)对细叶蜈蚣草净水功能的影响；