摘要
研究了4种不同剂量的石油处理对红树植物白骨壤的叶片叶绿素含量、过氧化氢酶活性、游离脯氨酸含量、含水量、相对电导率、根系活力与生物量、茎高和茎径生长量、存活率、萌发幼苗数、幼苗高度等生理生态指标的影响,结果表明15 0 mg剂量的伊朗轻质原油处理对白骨壤没有不利影响,30 0 mg、6 0 0 mg剂量的伊朗轻质原油处理有促进白骨壤生长的作用,12 0 0 mg剂量的伊朗轻质原油处理植株生长受到明显抑制而且出现较多的个体死亡现象。白骨壤对石油污染有较强的耐受性和适应性,但大剂量能引起植株死亡。
Avicennia marina simulated wetland system was set up in a greenhouse, consisting of one-year-old Avicennia marina-soil-water system. The Iran light crude oil with four various doses: 150mg(Ⅱ), 300mg(Ⅲ), 600mg(Ⅳ), 1200m(Ⅴ) and water (CL)(Ⅰ)have been discharged into wetlands twice a week for one year. The main achievements were described as follows: Treatment of oil dose of 150mg caused no harmful impact on nutrition and growth of Avicennia marina as well as bourgeon and growth of seedlings. Treatment of oil dose of 300mg and 600mg promoted significantly breed and growth of Avicennia marina. Oil Treatment of 1200mg dose restrained the breed and growth of Avicennia marina and the death rate was near 30%. Oil treatment of 150mg dose had little effect on the physi-ecoological indexes, such as vigor of root system, water content, catalase activity, free prolin content, chlorophyll content, net photosynthetic rate of Avicennia marina. Oil treatment of 300mg and 600mg caused some changes on relative electric conductivity and free prolin content of leaves at initial stage. But the value of them gradually came back to the level of CL afterwards. Oil treatment of 300mg and 600mg dose made the chlorophyll content of leaves higher than that of CL, whereas vigor of root system, water content of leaves and catalase activity of leaves showed no obvious changes compared with those of CL. When treated with the dose of 1200mg, the physi-ecoological values above-mentioned had significant or very significant changes. At last, the conclusion was that oil treatment of 150mg dose for one year had no harmful impact on Avicennia marina. And 300mg and 600mg oil treatment can stimulated growth of these Avicennia marina. But the dose group of 1200mg can inhibited significantly growth of Avicennia marina, and many individuals died. In view of above study,it can be said that Avicennia marina had a strong resistance to oil.
出处
《生态学报》
CAS
CSCD
北大核心
2005年第5期1095-1100,共6页
Acta Ecologica Sinica
基金
国家自然科学基金资助项目 (3 9470 15 1)~~
关键词
石油处理
白骨壤
生理生态
影响
oil treatment
Avicennia marina
physi-ecoological indexes
effect
