CAJ | 학술논문

[目的]研究颤蚓扰动对水田沉积物颗粒垂直运移的作用,探讨底栖环节动物在水层-底栖界面耦合过程中的生物扰动作用和机制.[方法]以化学性质稳定的玻璃珠作为示踪颗粒,对比分析水田沉积物颗粒垂直运移在有/无颤蚓活动时的差异.[结果]颤蚓扰动10 d后,沉积物表层示踪颗粒有41.3%向下迁移,最大迁移深度为9.4 cm,垂直迁移率为1.370×10-3 (g·cm2·d).6 cm深处的示踪颗粒分别有25.8%和17.3%在扰动后向上和向下迁移,向上和向下最大迁移距离分别为5.2和2.7 cm,垂直向上和向下迁移率分别为8.557×10-4和5.738×10-4 (g·m2·d).[结论]颤蚓通过自身的活动,使水田表层和深层沉积物颗粒在垂直方向上发生运移,改变了沉积环境.
[목적]연구전인우동대수전침적물과립수직운이적작용,탐토저서배절동물재수층-저서계면우합과정중적생물우동작용화궤제.[방법]이화학성질은정적파리주작위시종과립,대비분석수전침적물과립수직운이재유/무전인활동시적차이.[결과]전인우동10 d후,침적물표층시종과립유41.3%향하천이,최대천이심도위9.4 cm,수직천이솔위1.370×10-3 (g·cm2·d).6 cm심처적시종과립분별유25.8%화17.3%재우동후향상화향하천이,향상화향하최대천이거리분별위5.2화2.7 cm,수직향상화향하천이솔분별위8.557×10-4화5.738×10-4 (g·m2·d).[결론]전인통과자신적활동,사수전표층화심층침적물과립재수직방향상발생운이,개변료침적배경.
[Objective]The research aimed to investigate the bioturbation effects of Branchiura sowerbyi(Tubificidae)on the vertical transport of sedimentary particles in Paddy field.and explore the bioturbation effects and mechanism of benthic Annelida in coupling process of benthic-pelagic interface.[Method] Using chemically stable glass beads aS tracers，the vertical transport of sedimentary particles in paddy field Was analyzea comparatively with and without B.sowerbyi.[Result]After 10 days'bioturbation of B.sowerbyi，41.3% of the glass beads on the surface of sedimentary particles were transferred downward to the maximum depth of 9.4 cm, and the vertical transportation rate of sedimentary particles Was 1.370×10-3／(g·cm2·d).25.8% and 17.3% of glass beads at a depth of 6 cm were transferred upwards and downwards respectively after bioturbation.to the maximum depth of 5.2 and 2.7 cm respectively，and the vertical transportation rates of sedimentary particles were8.557×10-4 and 5.738×10-4／(g·cm2·d) respectively.[Conclusion]The sadimentary particles on the surface and deep layer of the paddy field were vertically shifted by the physical activities of B.sowerbyi，thus changed the sedimentary environment.