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首页> 外文会议>Flood Forecasting and Water Resources Assessment for IAHS(International Association of Hydrological Sciences)-PUB >Assessing Chinese Sturgeon Spawning Ground by Using Acoustic Doppler Current Profiler to Measure River Velocities
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Assessing Chinese Sturgeon Spawning Ground by Using Acoustic Doppler Current Profiler to Measure River Velocities

机译：用声学多普勒电流剖面仪评估中国Vel鱼产卵场河速

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The prior research has demonstrated the feasibility of employing the variable based on spatial velocity gradients to characterize and describe stream habitat. The higher gradients generally indicate the higher levels of physical heterogeneity and the better habitat quality. In the practice, acoustic Doppler current profiler (ADCP) is used to obtain the detailed velocity data, except for the 2D hydraulic model. Herein we demonstrate the use of ADCP to obtain ecologically relevant data of the Chinese sturgeon spawning ground and compute the associated variable. The data were collected from the downstream of Gezhouba Dam in Yangtze River, which is the last spawning ground of Chinese sturgeon. The habitat variable based on spatial velocity gradients is proved to be available in the scope of the sample cross-sections. Three of the twelve sample cross-sections are greater than the others in terms of the habitat variable computed upon the measured velocity. Moreover, the locations of the three sample cross-sections are just the mating field of Chinese sturgeon, which has been proved by relevant Chinese ecologists by proper ecological means.
机译：先前的研究证明了使用基于空间速度梯度的变量来表征和描述河流生境的可行性。较高的梯度通常表示较高的物理异质性水平和较好的栖息地质量。在实践中，除了2D液压模型外，声学多普勒电流剖面仪（ADCP）用于获取详细的速度数据。在这里，我们演示了使用ADCP来获取中华st产卵场的生态相关数据并计算相关变量。数据是从长江Ge洲坝的下游采集的，长江是中国st的最后产卵场。事实证明，基于空间速度梯度的栖息地变量在样本横截面的范围内是可用的。就根据测得的速度计算出的生境变量而言，十二个样本横截面中的三个横截面大于其他横截面。而且，这三个断面的位置恰好是中华st的交配场，这一点已被相关的中国生态学家通过适当的生态手段证明。

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