| 运城黄河湿地景观空间格局变化及其驱动因素 |
| Analysis of Landscape Pattern Changes and Driving Forces in the Yellow River Wetland of Yuncheng City |
| 投稿时间：2019-05-07 修订日期：2021-01-22 |
| DOI：10.15928/j.1674-3075.201905070112 |
| 中文关键词:景观类型 景观格局指数 驱动力 运城黄河湿地 |
| 英文关键词:landscape types landscape pattern index driving forces Yuncheng Yellow River wetland |
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| 中文摘要: |
| 基于2007-2017年的5期遥感影像，运用遥感解译和景观指数方法，综合探究运城黄河湿地景观格局变化及其驱动因素，为黄河中游河道湿地的修复与可持续利用提供参考。结果表明：（1）湿地面积在2007-2017年期间总体呈增长趋势，其中2007-2015年湿地面积持续上升，2015-2017年减少5 716.08 hm2。湿地与旱地之间转换最密切，湿地景观间（水域+沼泽+草甸）也有较大幅度的转换。景观类型的分布以河津市、万荣县、永济市及垣曲县部分种类偏多，湿地景观沿河流分布。（2）类型水平上，旱地是优势类型，湿地整体处于劣势，景观零碎。水域在湿地景观中占优势，林地、旱地景观趋于复杂，旱地、水域、林地景观集聚度偏大；景观水平上，研究区景观破碎度和复杂度都有不同程度的降低，结构趋于稳定，连通性变好。(3）景观格局变化主要受人为驱动力影响，其中政策对研究区有强制性的作用。近10 a运城黄河湿地呈现增长态势，景观格局总体逐渐优化。 |
| 英文摘要: |
| The Yellow River wetland in Yuncheng City is an important component of the middle Yellow River wetlands and the only Yellow River wetland natural reserve in Shanxi Province. The wetland includes two cities (Hejin and Yongji) and five counties (Wanrong, Linyi, Ruicheng, Pinglu, Xiaxian and Yuanqu). In this study, we analyzed changes in landscape patterns within the wetland and the forces driving those changes. The period of analysis was 2007-2017 and remote sensing images were interpreted to obtain the landscape pattern index at different times during the study period. The aim of the study was to provide a reference for the restoration and sustainable use of the middle Yellow River wetland. The data was obtained from Landsat TM images (2007 and 2010), and Landsat 8 OLI images (2013, 2015 and 2017). The study area was divided into six landscape types: water, swamp, meadow, woodland, dry land, city and town. Results were as follows: (1) The wetland area tended to increase during the research period，but decreased slightly, by 5716.08 hm2, after 2015. Wetland was frequently converted to dry land, and the conversion from water and meadow to swamp was clear. In terms of spatial patterns, landscape types were rich in Hejin, Wanrong, Yongji and Yuanqu counties, and wetland landscape were distributed along the river. (2) At the level of landscape type, dry land was the dominant type, accounting for over half of the total study area, and water was dominant among wetland landscape types, followed by woodland, swamp and meadow. There was a trend toward increasing landscape complexity in dry land and woodland areas. Dry land, water and woodland landscapes tended to be more concentrated. At the landscape pattern level, both overall fragmentation and complexity declined, and the landscape pattern tended to be stable, with increasing connectivity. (3) Changes in landscape pattern were primarily influenced by human activities, and mandatory policies. Our results indicate that the Yellow River wetland in Yuncheng city is increasing in area and the overall wetland landscape pattern gradually improved from 2007 to 2017. |
| 孙姝博,孙虎,徐崟尧,高珊.2021.运城黄河湿地景观空间格局变化及其驱动因素[J].水生态学杂志,42(1):17-25. |
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