Temporal Scaling of Water Level Fluctuations in Shallow Lakes and Its Impacts on the Lake Eco-Environments
Temporal Scaling of Water Level Fluctuations in Shallow Lakes and Its Impacts on the Lake Eco-Environments
复制标题
浅水湖泊水位波动的时间尺度及其对湖泊生态环境的影响
DOI：
10.3390/su12093541
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发表时间：
2020
期刊：
影响因子：
3.9
通讯作者：
Yang Shengtian
中科院分区：
文献类型：
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作者：
Maihemuti Balati;Aishan Tayierjiang;Simayi Zibibula;Alifujiang Yilinuer;Yang Shengtian
从生态学角度管理湖泊水位已成为近年来保护、养护和恢复湖泊生态环境的一个紧迫问题。本文结合艾比湖流域的实际情况，采用系统动力学方法建立了艾比湖水量平衡模型。本研究的目的是基于湖泊水量平衡模型，以充分了解湖泊深-面积-体积之间的变化和关系。结合实地调查和水文资料分析，揭示了影响湖泊水位波动的主要因素，以及湖泊水位波动对湖泊生态环境的影响。旨在为艾比湖生态系统的保护和恢复提供理论依据。主要研究结果包括：（1）以月湖面面积为模型验证，模型计算结果与实测值吻合较好。(II)影响湖泊水位动态变化的因素由低到高依次为：降水、地下水补给、蒸发、河流来水。(III)水位波动在湖岸线位移变化中起着重要作用，当湖水位下降到1米以下时，水体表面积减少到约106平方公里。(IV)WLF的规模和频率驱动的湖泊沿岸的区生态的重大差异，不仅影响底栖生物组合的结构和功能，但也沿岸的栖息地结构。这些结果建立了艾比湖湿地水文变量和生态系统健康之间的定量联系。这些研究结果可以广泛用于管理艾比湖流域以及其他类似的水体，并可以提供一个有用的工具，管理湖泊生态系统的保护和恢复。
Managing lake water levels from an ecological perspective has become an urgent issue in recent years in efforts to protect, conserve, and restore lake eco-environments. In this study, we considered the actual situation of Ebinur Lake basin to develop a lake water balance model using a System Dynamics (SD) method. The objective of this study is based on the lake water balance model to sufficiently understand the variation and relationship between the lake depth–area–volume. We combined field investigations and hydrological data analysis to expose the major factors affecting lake water level fluctuations (WLFs), as well as the impact of WLFs on lake eco-environments. All with the aim of providing a theoretical basis to manage Ebinur Lake ecosystems for conservation and restoration. The main findings of this study include: (I) The model’s calculation results agree with the observation value, as the monthly lake surface area was used to validate the model. (II) The factors influencing the dynamic changes in the water level of the lake are ranked in ascending order (from the lowest to the highest) as follows: Precipitation, groundwater recharge, evaporation, river inflow. (III) Fluctuations in water level play a significant role in lake shoreline displacement variation, and when the lake’s water level drops below 1 m, the surface area of the water body decreases to approximately 106 km2. (IV) The magnitude and frequency of WLFs drive major differences in the ecology of lake littoral zones, influencing not only the structure and functioning of benthic assemblages but also littoral habitat structure. These results established a quantitative linkage between hydrological variables and ecosystem health for the Ebinur Lake wetlands. These findings could be widely used in managing the Ebinur Lake basin as well as other similar water bodies, and could provide a useful tool for managing lake ecosystems for conservation and restoration.