The Effects of Misgurnus anguillicaudatus Bioturbation on the Vertical Distribution of Sediment Particles in Paddy Fied  

泥鳅扰动对水田沉积物颗粒垂直分布的影响(英文)

作　　者：孙刚[1] 房岩[1] 董刚[1] 吕明[1] 

机构地区：[1]长春师范学院生命科学学院,吉林长春130032

出　　处：《Agricultural Science & Technology》2008年第6期18-20,54,共4页农业科学与技术（英文版）

基　　金：Supported by the Project of Talent Exploitation Foundation of Jilin Province;Scientific and Technological Developing Scheme of Jilin Province(20060577);the Science and Technology Planning Project of Education Department of Jilin Province(2007169;2006113;2006117);High-level Overseas Returned Talents by Ministry of Personnel,Ministry of Personnel;the Scientific Research Foundation for the Returned Overseas Chinese Scholars,State Education Ministry(2005-546);Science Foundation for Young Teachers of Northeast Normal University(20050406)~~

摘　　要：[Objective] The purpose of this study was to investigate the role of breeding Misgurnus anguillicaudatus in paddy field in vertical distribution of sediment particles. [Method] Using chemically stable glass beads as tracers, the effects of Misgurnus anguillicaudatus bioturbation on the vertical distribution of sediment particles in paddy field were investigated, and the bioturbation role of benthic fish in the coupling process of benthic-pelagic interface was discussed. [Result] After ten days of Misgurnus anguillicaudatus bioturbation, 43.2% of the glass beads on the surface were transferred downwardly with the maximum distance of 7.5 cm, and the vertical transportation rate of sediment particles was 7.676×10-4g-1·cm-2·d-1. At a depth of 6 cm, 39.7% and 9.9% of the glass beads were respectively transferred upwards and downwards, to the maximum distanc of 4.5 cm and 5.1 cm, respectively; and the vertical transportation rates of sediment particles were 7.597×10-4g-1·cm-2·d-1 and 1.894×10-4g-1·cm-2·d-1, respectively. [Conclusion] Misgurnus anguillicaudatus bioturbation could promote the circulation and transformation of nutrients at water/soil interface through affecting the vertical distribution of sediment particles.[Objective] The purpose of this study was to investigate the role of breeding Misgurnus anguillicaudatus in paddy field in vertical distribution of sediment particles. [Method] Using chemically stable glass beads as tracers, the effects of Misgurnus anguillicaudatus bioturbation on the vertical distribution of sediment particles in paddy field were investigated, and the bioturbation role of benthic fish in the coupling process of benthic-pelagic interface was discussed. [Result] After ten days of Misgurnus anguillicaudatus bioturbation, 43.2% of the glass beads on the surface were transferred downwardly with the maximum distance of 7.5 cm, and the vertical transportation rate of sediment particles was 7.676×10-4g-1·cm-2·d-1. At a depth of 6 cm, 39.7% and 9.9% of the glass beads were respectively transferred upwards and downwards, to the maximum distanc of 4.5 cm and 5.1 cm, respectively; and the vertical transportation rates of sediment particles were 7.597×10-4g-1·cm-2·d-1 and 1.894×10-4g-1·cm-2·d-1, respectively. [Conclusion] Misgurnus anguillicaudatus bioturbation could promote the circulation and transformation of nutrients at water/soil interface through affecting the vertical distribution of sediment particles.

关 键 词：Misgurnus anguillicaudatus PADDY FIELD BIOTURBATION SEDIMENT VERTICAL DISTRIBUTION 

分 类 号：S917.4[农业科学—水产科学]