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Need to link river management with estuarine wetland conservation: A case study in the Yellow River Delta, China

机译：需要将河流管理与河口湿地保护联系起来：以中国黄河三角洲为例

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Estuarine wetlands are valuable ecosystems of coastal zones. Traditionally, wetlands are preserved by establishing nature reserves within them. However, the driving forces of estuarine wetland degradation change at different temporal and spatial scales, rendering it necessary to evaluate the entire river delta wetland system. We analyzed the links between management of the Yellow River (YR) and estuarine wetland conservation in the Yellow River Delta (YRD). We measured changes in river runoff and sediment discharge from 1950, and spatial changes in the tail channels from 1855. Changes in the wetland areas of the entire delta, the natural reserves, and the river buffer areas were calculated. Finally, the effects of ecological water supplementation of the YR, mandated in 2008 by the Chinese government to protect estuarine wetlands, were also analyzed. The results indicated that not only the reductions in river runoff and sediment discharge, but also shifts in the tail channels, influenced estuarine wetlands. In addition, ecological water supplementation from the YR have improved wetland health. We suggest that increasing the connectivity between old and new rivers is important to improve the integrity of estuarine wetland ecosystems. Linking river management to estuarine wetland conservation would aid in the planning and improvement of the wetland network in the delta. (C) 2017 Elsevier Ltd. All rights reserved.
机译：河口湿地是沿海地区的宝贵生态系统。传统上，通过在湿地内建立自然保护区来保护湿地。然而，河口湿地退化的驱动力在不同的时空尺度上变化，因此有必要评估整个河三角洲湿地系统。我们分析了黄河（YR）的管理与黄河三角洲（YRD）的河口湿地保护之间的联系。我们测量了1950年以来河流径流量和沉积物排放量的变化，以及1855年以来尾河道的空间变化。计算了整个三角洲的湿地面积，自然保护区和河流缓冲区的变化。最后，还分析了中国政府于2008年授权保护长江口湿地的生态补充水的效果。结果表明，河道湿地不仅影响了河流径流和泥沙流量的减少，而且还影响了尾河道的移动。此外，YR的生态补水还改善了湿地健康状况。我们建议增加新旧河流之间的连通性对于提高河口湿地生态系统的完整性很重要。将河流管理与河口湿地保护联系起来，将有助于三角洲湿地网络的规划和改善。 （C）2017 Elsevier Ltd.保留所有权利。

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