Responses of eastern Chinese coastal salt marshes to sea-level rise combined with vegetative and sedimentary processes.
Responses of eastern Chinese coastal salt marshes to sea-level rise combined with vegetative and sedimentary processes.
复制标题
中国东部沿海盐沼对海平面上升的响应以及植被和沉积过程
DOI：
10.1038/srep28466
复制
发表时间：
2016-06-23
影响因子：
4.6
通讯作者：
Zhang LQ
中科院分区：
文献类型：
--
作者：
Ge ZM;Wang H;Cao HB;Zhao B;Zhou X;Peltola H;Cui LF;Li XZ;Zhang LQ
海平面上升对沿海生态系统的影响在全球变化中引起了广泛关注。本研究采用长江口盐沼模型（SMM-YE）和美国海平面影响盐沼模型（SLAMM）模拟了SLR对中国东部沿海盐沼的影响。同时还考虑了植物群落优势种的变化。基于slam的预测表明，到2100年，栖息地将有退化的趋势；在低水平情景下，盐沼生境总面积持续减少（4-16%），在高水平情景下，预计损失更大（6-25%）。SMM-YE结果表明，盐沼能够通过泥滩增生、植被扩张和植物截流等过程抵御SLR的威胁。该模型预测，在低水位情景下，盐沼面积将增加3-6%。在高水平情景下，SMM-YE对总生境面积的减少远低于slam预测。然而，单反可能对不适应长时间淹没的盐沼物种产生负面影响。长江口泥沙资源变化的适应策略是必要的。
The impacts of sea-level rise (SLR) on coastal ecosystems have attracted worldwide attention in relation to global change. In this study, the salt marsh model for the Yangtze Estuary (SMM-YE, developed in China) and the Sea Level Affecting Marshes Model (SLAMM, developed in the U.S.) were used to simulate the effects of SLR on the coastal salt marshes in eastern China. The changes in the dominant species in the plant community were also considered. Predictions based on the SLAMM indicated a trend of habitat degradation up to 2100; total salt marsh habitat area continued to decline (4–16%) based on the low-level scenario, with greater losses (6–25%) predicted under the high-level scenario. The SMM-YE showed that the salt marshes could be resilient to threats of SLR through the processes of accretion of mudflats, vegetation expansion and sediment trapping by plants. This model predicted that salt marsh areas increased (3–6%) under the low-level scenario. The decrease in the total habitat area with the SMM-YE under the high-level scenario was much lower than the SLAMM prediction. Nevertheless, SLR might negatively affect the salt marsh species that are not adapted to prolonged inundation. An adaptive strategy for responding to changes in sediment resources is necessary in the Yangtze Estuary.