• 关键词：沉积物  生态交错带  水陆交错带  水固交错带  白洋淀  科学清淤

• 基金项目：国家水体污染控制与治理科技重大专项（No.2018ZX07110004）

• 王东升
• 1. 中国科学院生态环境研究中心, 环境水质学国家重点实验室, 北京 100085;2. 中国科学院生态环境研究中心(义乌)长三角中心, 义乌 322000

• 门彬
• 中国科学院生态环境研究中心, 环境水质学国家重点实验室, 北京 100085

• 张美一
• 1. 中国科学院生态环境研究中心, 环境水质学国家重点实验室, 北京 100085;2. 中国科学院生态环境研究中心(义乌)长三角中心, 义乌 322000

• 摘要：本文从雄安新区白洋淀科学清淤规划的重要性入手，提出水固交错带这一新型生态交错带研究的理念.重点关注由于沉积物形成过程和结构不同导致的污染物在水相、固相和气相及在水-固界面和水-气界面等区域的地球化学循环过程与机制的差异，以及与其对应的特异性水生态和底栖生态修复理念与设计.基于这一理念，结合白洋淀内源污染治理的需求，进一步提出了"基于弹性机制的生态空间重构"的工作设想.以此抛砖引玉，深入探讨沉积物-水微界面过程机制，以及相应的特殊宏观生态效应与污染控制，推动环境水质学领域的研究与发展.

• Abstract：To meet the needs of sediment removal in Baiyangdian Lake of Xiong'an New Area, we put forward a new ecotone concept—sediment water ecotone.This concept focuses on the differences of the geochemical cycle processes and mechanisms among pollutants in the aqueous, solid and gas phases and in the water-solid interface and water-air interface due to different sediment formation processes and sediment structures, and the corresponding design of specific water ecology and benthic ecological restoration.Based on this concept, combined with the needs of endogenous pollution control of Baiyangdian Lake, the author further put forward a working assumption of "ecological space reconstruction based on elastic mechanism".This paper attempts to make an in-depth discussion about micro-interface process mechanism in sediment water ecotone and the corresponding macro ecological effects and pollution control plan.We hope this study could promote the research and development in the field of environmental water quality.

• Key words：sediment  ecotone  land/inland water ecotone  sediment water ecotone  Baiyangdian Lake  sediment removal

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