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Investigating marsh sediment dynamics and its driving factors in Yellow River delta for wetland restoration

文献类型： 外文期刊

作者： Lu, Qingshui 1 ; Kang, Lingyan 1 ; Shao, Hongbo 1 ; Zhao, Zhiping 5 ; Chen, Qiao 3 ; Bi, Xiaoli 1 ; Shi, Ping 1 ;

作者机构： 1.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Yantai 264003, Peoples R China

2.Jiangsu Acad Agr Sci, Inst Agrobiotechnol, Nanjing 210014, Jiangsu, Peoples R China

3.Shandong Univ Sci & Technol, Coll Geol Sci & Engn, Shandong Prov Key Lab Deposit Mineralizat & Sedim, Qingdao 266510, Peoples R China

4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China

5.Chinese Res Inst Environm Sci, Beijing 100012, Peoples R China

关键词： Marsh;Yellow River delta;Climate changes;Sediment load;Wetlands eco-restoration

期刊名称：ECOLOGICAL ENGINEERING （ 影响因子：4.035； 五年影响因子：4.611 ）

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收录情况： SCI

摘要： The wetlands of the Yellow River delta play important roles for Asian and west Pacific birds during migration. Marshes are the main component of wetlands in the delta, and their coverage area has experienced a decreasing trend for the last few decades. Wetland changes in the Yellow River delta have been analyzed in previous studies; however, those studies only partially analyzed the causes of the decline. Using statistical and spatial analysis based on observational data and remote sensing imagery for the period of 1986-2005, we found that the annual mean temperature and annual precipitation tended to increase, and the evapotranspiration and the moisture index tended to decrease. Consequently, these climate factors led to a significant decrease in river runoff, which resulted in decreased water supply for the marshes in the delta. A Wetland Restoration Project was launched in 1992, and it successfully conserved marshes within a relatively small area. However, the inadequate water supply still resulted in an overall decrease in marsh area over the entire study area. These results provide more insights into managing wetlands eco-restoration. (C) 2016 Elsevier B.V. All rights reserved.

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