河流和溪流高分辨率三维温度测量的新方法

IF 2.1 3区 环境科学与生态学 Q2 ECOLOGY
Ecohydrology Pub Date : 2025-08-12 DOI:10.1002/eco.70092
Johannes Kuhn, Laura Kirsten, Joachim Pander, Juergen Geist
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引用次数: 0

摘要

水温是决定水生生境特征和生物群落结构的重要因素。尽管具有很高的相关性,但测量地表水热非均质性的传统方法在空间代表性方面受到严重限制。具体来说,缺乏能够在高分辨率下对整个lotic水体的水温进行原位表征的空间三维方法。本研究提出了一个创新的原型装置,以满足这些要求。我们在400米长的河段对该装置和方法进行了测试,并与基于热红外遥感的热非均质性测绘结果进行了比较。我们的原型装置在1小时内收集了6306个温度测量值,涵盖了河流形态不同的所有栖息地类型。与热红外遥感的对比显示了显著的差异,挑战了目前使用的仅记录地表水温度的方法的准确性和代表性。观测到的地表和地表温度之间高达9.36°C的巨大差异,强调了包括近地表和近地表高空间分辨率测量在内的测量的重要性。本文提出的新方法获得了空前数量的温度数据点,加上精确的位置和深度信息,为水生栖息地热非均质性的代表性评估提供了新的机会。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

A Novel Approach to High Resolution Three-Dimensional Temperature Measurements in Rivers and Streams

A Novel Approach to High Resolution Three-Dimensional Temperature Measurements in Rivers and Streams

Water temperature is a crucial factor determining aquatic habitat characteristics and biological community structure. Despite its high relevance, conventional methods to measure thermal heterogeneity in surface waters are strongly limited in their spatial representativeness. Specifically, there is a lack of spatially three-dimensional methods capable of in situ characterization of water temperatures at high resolution for entire lotic waterbodies. This study presents an innovative prototype device which fulfils these requirements. We tested the device and method in a 400-m-long river stretch and compared the results with thermal heterogeneity mapping based on thermal infrared remote sensing. Our prototype device collected 6306 temperature measurements within 1 h throughout the river stretch, encompassing all habitat types with varying river morphology. Comparison with thermal infrared remote sensing revealed significant discrepancies, challenging the accuracy and representativeness of currently used methods that only record surface water temperatures. The observed substantial differences between surface and bottom temperatures of up to 9.36°C underscore the importance of measurements that include both near-bottom and near-surface measurements of high spatial resolution. The unprecedented quantity of temperature data points derived from the novel approach presented herein, coupled with the precise positional and depth information, opens new opportunities for a representative assessment of thermal heterogeneity in aquatic habitats.

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来源期刊
Ecohydrology
Ecohydrology 环境科学-生态学
CiteScore
5.10
自引率
7.70%
发文量
116
审稿时长
24 months
期刊介绍: Ecohydrology is an international journal publishing original scientific and review papers that aim to improve understanding of processes at the interface between ecology and hydrology and associated applications related to environmental management. Ecohydrology seeks to increase interdisciplinary insights by placing particular emphasis on interactions and associated feedbacks in both space and time between ecological systems and the hydrological cycle. Research contributions are solicited from disciplines focusing on the physical, ecological, biological, biogeochemical, geomorphological, drainage basin, mathematical and methodological aspects of ecohydrology. Research in both terrestrial and aquatic systems is of interest provided it explicitly links ecological systems and the hydrologic cycle; research such as aquatic ecological, channel engineering, or ecological or hydrological modelling is less appropriate for the journal unless it specifically addresses the criteria above. Manuscripts describing individual case studies are of interest in cases where broader insights are discussed beyond site- and species-specific results.
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