浅海筏式养殖对周边海域潮流和悬浮体特征影响研究  

Effects of Suspended Culture of the Seaweed Laminaria japonica Aresch on the Flow Structure and Suspended Sediment Transport

作　　者：张泽华[1,2] 黄海军[1] 刘艳霞[1] 严立文[1] 王恩康[3] 

机构地区：[1]中国科学院海洋研究所,海洋地质与环境重点实验室,山东青岛266071 [2]中国科学院大学,北京100049 [3]国家海洋局第一海洋研究所,山东青岛266061

出　　处：《海洋科学进展》2016年第1期37-49,共13页Advances in Marine Science

基　　金：国家自然科学基金项目--浅海大规模海带养殖活动对沉积环境的影响研究(41076031)和悬浮颗粒矿物成分对近岸水体光学参数的影响及光谱响应研究(41306190)

摘　　要：根据黑泥湾近岸海域养殖期与无养殖期多站同步分层潮流泥沙实测资料,对黑泥湾大规模海带养殖区及周边海域的潮流动力特征以及悬浮体分布规律和时间变化进行了动态的研究。通过对比海带养殖期与无养殖期潮流动力与悬浮体特征的时空变化规律,分析了浅海海带筏式养殖对周边海域悬浮体动力特征的影响作用。研究结果表明,研究区大范围分布的海带筏式养殖群落使得潮流动力减弱,并改变了潮流流速和悬浮体质量浓度的垂向分布特征,海底边界层的潮流底切应力被削弱,抑制了海底泥沙的再悬浮作用,但在一定程度上加强了水体的垂向混合作用。Based on the synchronous hydrological and sediment in-situ observations at fixed stations in Hei- ni Bay during culture period and non-culture period, we studied the hydrodynamic characteristics and the distribution and variation of SPM in the Bay. By comparing the hydrodynamic and suspended sediment characteristics between culture and non-culture periods, the paper described the influence of suspended kelp aquaculture on the suspension dynamic characteristics of surrounding areas. The analytical results showed that widespread distribution of suspended culture community in the study area decreased the cur- rent velocity in culture area, and changed the suspension concentration vertical distribution structures. At the same time, the bottom shear stress of seabed boundary layer is greatly weakened, which restrains the seabed sediment re-suspension and thereby to strengthen the vertical mixing action of water to a certain ex- tent.

关 键 词：筏式养殖 水动力 泥沙输运 悬浮体 黑泥湾 

分 类 号：P73[天文地球—海洋科学]