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1.调查区的环境:本文的研究范围是马绍尔群岛和夏威夷群岛之间的中太平洋海盆地带,即7°—11°N,167—178°W之间。平均水深为4000—6000m。现场测定pH值为7.18—7.65,Eh为448—524mV,Fe~(2+)几乎未检测到,说明采样环境属于强氧化性。取样站位的沉积物多为褐色粘土或Si-Ca质软泥。高Eh值和疏松多孔的沉积物对结核的形成和物质供给创造了良好的条件。Eh、pH、水深以及沉积物类型对结核生长及其物质组成都产生重要影
1. Environment of the survey area: The study area of this paper is the mid-Pacific basin basin between the Marshall Islands and the Hawaiian Islands, ie, 7 ° -11 ° N and 167-178 ° W. The average depth of water is 4000-6000m. The measured pH value was 7.18-7.65, Eh was 448-524mV, almost no Fe2 + was detected in the field, indicating that the sampling environment was strongly oxidizing. Sediments at the sampling station are mostly brown clay or Si-Ca slime. High Eh values and loose porous deposits create good conditions for tuberculosis formation and material supply. Eh, pH, water depth, and sediment types have important effects on TB growth and its composition