| 互花米草入侵和持续扩张下黄河三角洲滨海湿地潮沟的形态特征及其变化 |
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| 引用本文： | 李昱蓉,武海涛,张森,卢霞,芦康乐.互花米草入侵和持续扩张下黄河三角洲滨海湿地潮沟的形态特征及其变化[J].湿地科学,2021(1). |
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| 作者姓名： | 李昱蓉 武海涛 张森 卢霞 芦康乐 |
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| 作者单位： | 中国科学院湿地生态与环境重点实验室中国科学院东北地理与农业生态研究所;江苏海洋大学海洋技术与测绘学院 |
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| 基金项目： | 国家重点研发计划项目(2017YFC0505901);2019年江苏省研究生科研创新实践活动项目(SJCX19_0962)资助。 |
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| 摘 要： | 为了探究互花米草(Spartina alterniflora)入侵下滨海湿地潮沟的发育特征及其变化,采用随机森林分类技术和统计学分析方法,研究了2004~2020年黄河三角洲湿地互花米草的入侵过程,揭示了互花米草持续扩张下潮沟的形态特征及其变化。研究结果表明,现行黄河入海口两侧区域的互花米草群落扩张迅速,截至2020年7月,研究区互花米草群落面积已经达到4406.95 hm2;2012~2016年期间,互花米草群落的扩张速度和扩张动态度都相对最大,分别为490.2 hm2/a和45.9%;在互花米草入侵和持续扩张的条件下,黄河三角洲滨海湿地潮沟的分支增多,平均面积减小,总长度变长,平均长度缩短,平均宽度变窄,景观连通度变差;互花米草的入侵使潮沟形态发生了显著变化,在互花米草入侵区,潮沟的分支增多,平均长度缩短,平均宽度变窄。
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| 关 键 词： | 黄河三角洲 互花米草 潮沟形态特征 遥感 滨海湿地 |
Morphological Characteristics and Changes of Tidal Creeks in Coastal Wetlands of the Yellow River Delta under Spartina alterniflora Invasion and Continuous Expansion |
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| LI Yurong,WU Haitao,ZHANG Sen,LU Xia,LU Kangle.Morphological Characteristics and Changes of Tidal Creeks in Coastal Wetlands of the Yellow River Delta under Spartina alterniflora Invasion and Continuous Expansion[J].Wetland Science,2021(1). |
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| Authors: | LI Yurong WU Haitao ZHANG Sen LU Xia LU Kangle |
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| Institution: | (Key Laboratory of Weland Ecology and Environment,Northeast Instiute of Geography and Agroecology,Chinese Academy of Sciences,Changchun 130102,Jilin,P.R.China;School of Marine Technology and Geomatics,Jiangsu Ocean University,Lianyungang 222005,Jiangsu,P.R.China) |
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| Abstract: | Using random forest classification techniques and statistical analysis methods,the invasion process of Spartina alterniflora in the coastal wetlands of the Yellow River Delta from 2004 to 2020 was studied in this paper.The article revealed the morphological characteristics and changes of tidal creeks under the continuous expansion of Spartina alterniflora.The results showed that the Spartina alterniflora community on both sides of the Yellow River Estuary expanded rapidly.By July 2020,the Spartina alterniflora community area had reached 4406.95 ha in the region.From 2012 to 2016,the expansion speed and dynamic degree of Spartina alterniflora community were relatively the largest,which were 490.2 hm2 per year and 45.9%,respectively.The branch number of tidal creeks increased,the total length became longer,but the average area decreased,the average length shortened,the average width narrowed,and the landscape connectivity became worse in the Yellow River Delta under the condition of Spartina alterniflora invasion and continuous expansion.Particularly,the branch number of tidal creeks significantly increased,the average length shortened and the average width also narrowed in the invasion area of Spartina alterniflora. |
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| Keywords: | the Yellow River Delta Spartina alterniflora morphological characteristics of tidal creek remote sensing coastal wetlands |
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