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首页> 外文期刊>Geosciences >Potential Indicator Value of Subfossil Gastropods in Assessing the Ecological Health of the Middle and Lower Reaches of the Yangtze River Floodplain System (China)
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Potential Indicator Value of Subfossil Gastropods in Assessing the Ecological Health of the Middle and Lower Reaches of the Yangtze River Floodplain System (China)

机译：亚化石腹足类动物在评估长江洪泛区中下游生态健康中的潜在指标值（中国）

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The lakes across China’s middle and lower reaches of the Yangtze River system have a long history of sustaining human pressures. These aquatic resources have been exploited for fisheries and irrigation over millennia at a magnitude of scales, with the result that many lakes have lost their ecological integrity. The consequences of these changes in the ecosystem health of lakes are not fully understood; therefore, a long-term investigation is urgently needed. Gastropods (aquatic snails) are powerful bio-indicators that link primary producers, herbivores, and detritivores associated with macrophytes and grazers of periphyton and higher-level consumers. They are sensitive to abrupt environmental change such as eutrophication, dehydration, flooding, and proliferation of toxicity in floodplain lake systems. The use of the remains of gastropod shells (subfossils) preserved in the sedimentary archives of the floodplain lakes of the middle and lower reaches of the Yangtze River system holds high significance, as their potential in environmental change has not been studied in detail in the past. Here, we aim to test the hypothesis that modern and sub-fossil gastropods in the sediments of the middle and lower reaches of the Yangtze River floodplains systems have significant value as bioindicators, as they have the ability to reveal health-gradients of lake-ecosystem change in the region.
机译：中国长江中下游地区的湖泊拥有长期承受人类压力的历史。几千年来，这些水生资源已被大规模用于渔业和灌溉业，结果使许多湖泊丧失了生态完整性。这些变化对湖泊生态系统健康的影响尚未得到充分了解;因此，迫切需要进行长期调查。腹足类（水生蜗牛）是强大的生物指示剂，可将与大型植物，围生植物和高等消费者的放牧者相关的主要生产者，食草动物和有害生物联系起来。它们对突然的环境变化（如富营养化，脱水，洪水和洪泛区湖泊系统中的毒性扩散）敏感。长江中下游洪泛区湖泊沉积档案中保存的腹足动物贝壳（亚化石）的残留物具有重要意义，因为过去尚未详细研究其在环境变化中的潜力。在此，我们旨在检验以下假设：长江中下游平原沉积物中的现代和亚化石腹足纲动物具有生物指标的重要价值，因为它们具有揭示湖泊生态系统健康梯度的能力。该地区的变化。

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