河流活性物质入海通量:概念与方法

Flux of river active material flowing into the sea: concept and methodology

河流水体中呈溶解态和悬浮物结合态的元素活动性强,具有生态环境意义,查明其入海通量是当前生态地球化学评价的重要任务。通过总结前人的相关研究成果,确定了影响河流水体悬浮物的浓度及其矿物、化学组成的主要因素。从沿海经济带区域生态地球化学评价的实际需要出发,拟定了开展中国主要入海河流水溶态和悬浮物结合态元素入海通量调查的基本框架。

It is one of the key tasks for present ecogeochemical assessments to find out the continental flux into the sea through rivers, especially for dissolved components and suspended particulate matter （SPM） which are active components in the aqueous environment and have great eco-environmental significance. The paper reviews the main factors influencing the concentration of SPM in river water and its mineral and chemical compositions based on previous research results. It presents the basic framework and methodology for investigating the flux of active mass （dissolved components and SPM） flowing into the sea from major rivers in China so as to meet the demand of regional ecogeochemical assessments in the coastal economic zones of China.