瑞士阿尔卑纳赫湖物质迁移路径研究

不断恶化的水质变化趋势需要对湖泊的水生生态进行更为广泛和深入的研究。物质的迁移和混合过程直接影响着化学和生物组分的分布，对于维系整个湖泊生态系统非常重要，理解这个复杂的过程有助于更好地保护和利用湖泊资源。为了更好地定量分析瑞士阿尔卑纳赫湖中物质的迁移路径，在研究中，用CE—QUAL—W2模型（二维）模拟物质的迁移和混合过程，与实测结果吻合良好，表明该模型较为准确地模拟了迁移和混合过程，为该模型应用于水质模拟和预测打下了坚实的基础。为了更好地反映物质的迁移过程，还采用热平衡方法计算了垂直扩散系数，并且证明单独的CTD监测能够获取可靠的垂直扩散系数，不必同时进行温度计链的监测。

Study on Flux Pathway of Constituents in Lake Alpnach

Lakes are increasingly threatened by anthropogenic activities. In a lake, transport and mixing processes govern the distribution of chemical and biological constituents and play a crucial role in sustaining the lake ecology. Understanding these complex processes can help us protect these precious resources and use them wisely. In order to better quantify the flux pathway of constituents in Lake Alpnach, in this study, the mixing processes in the lake are simulated by a two-dimensional model （CE-QUAL-W2）. The model exhibits very strong capabilities in simulating these complex processes, which sets a consistent starting point for further waterquality-oriented simulations. Vertical diffusivity is also calculated by Heat-Budget method in this study, so as to better characterize the mixing. It is proven that reliable vertical diffusivity can be calculated from CTD data alone, which means that it is not necessarily needed to conduct CTD and thermistor string measurement to achieve vertical diffusivity.