摘要
20 0 0年8月份,对滦河口青岛文昌鱼分布与栖息地沉积物粒度及沉积物有机质含量进行了研究。结果表明,(1)调查区域沉积物类型主要为细中砂、中细砂和细砂,粒径在0 .5～0 .12 5mm的组分在该区最集中;(2 )沉积物中有机质含量为(0 .81～0 .5 9) % ;(3 )文昌鱼主要分布在细中砂及中细砂类型的底质中,有机质含量为0 .0 4%～1.61% ,0 .12 5～0 .5mm粒组含量70 %～90 % ,中值粒经为1.75～2 .47φ,绝大多数站位分选程度好,组分对称分布。给出了保护区文昌鱼最佳栖息地沉积物粒度分析参数及有机质含量范围,并分析了威胁文昌鱼生存环境的主要环境压力。
The grain size , content of total organic carbon in sediment and distribution of B. belcheri tsingtaneuse in Luan estuary were studied in Aug. of 2000. The results were as follows. (1) The main types of sediments were fine-medium sand, medium-fine sand and fine sand. The component with the diameter from 0.125 to 0.5mm was predominant in the sediment. (2) The content of organic materials was 0.81( 0.59% in it.3) B. belcheri tsingtaneuse distributed in fine-medium sand and medium-fine sand substrates. The statistical moments for the sediments were as follows: MD φ=1.75 to 2.47φ, QD φ in most of the sediments was less than 0.5φ, SKφ in most of the sediments was -0.02 to 0.07. The content of total organic carbon was 0.04 to 1.61%. The suitable substrate for the distribution of B. belcheri tsingtaneuse was also given in this paper. The main stress to the sedimentary environment for the distribution of B. belcheri tsingtaneuse was also discussed.
出处
《海洋环境科学》
CAS
CSCD
北大核心
2005年第2期39-42,共4页
Marine Environmental Science
关键词
滦河口
青岛文昌鱼
分布
沉积物
Branchiostoma belcheri tsingtaneuse
distribution
sediment
Luanhe Estuary
