| 浙江省三门湾北部潮滩互花米草遥感研究 |
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| 引用本文： | 付雅晴,印萍,高飞,刘冬雁,曹轲,田元.浙江省三门湾北部潮滩互花米草遥感研究[J].中国海洋大学学报(自然科学版),2022,52(1):134-144. |
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| 作者姓名： | 付雅晴 印萍 高飞 刘冬雁 曹轲 田元 |
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| 作者单位： | 中国海洋大学海洋地球科学学院,山东 青岛 266100;中国地质调查局青岛海洋地质研究所,山东 青岛 266071;中国地质调查局青岛海洋地质研究所,山东 青岛 266071;中国海洋大学海洋地球科学学院,山东 青岛 266100 |
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| 基金项目： | 浙江中部海岸带综合地质调查项目(DD20190276);河口三角洲生态环境地球观测应用研究项目(2019YFE0127200)资助。 |
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| 摘 要： | 浙江省三门湾地区潮滩互花米草扩散迅速,已成为潮滩主要植被类型,挤占滩涂生态空间,降低海湾纳潮量,引起滩涂淤长和水交换能力下降,互花米草入侵和扩散问题引起当地生态环境和海洋管理部门高度关注。本文利用Landsat和Sentinel-2系列卫星遥感数据,结合无人机摄影测量,对三门湾北部潮滩近20年来互花米草分布和变化进行分析,结果表明,近20年间三门湾北部潮滩互花米草快速扩张,面积由2000年的21.8 km2增加到2017年高峰值为38.6 km2,年扩展面积近1 km2,主要分布在宁海县的一市港、双盘涂、三山涂和象山县的蟹钳港等湾顶潮滩区。2017年后,部分互花米草生长的上部潮滩被改造为海水养殖池,总体上互花米草面积有所下降,到2020年4月份统计的互花米草面积为34.9 km2,但潮滩下部米草扩增趋势仍然持续。扩增主要为沿潮沟两侧及先斑块后连续的特征。高程、人类活动引起的水动力环境改变是互花米草面积变化的主要因素。
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| 关 键 词： | 三门湾 潮滩 互花米草 扩散过程 |
Remote Sensing Study on Spartina alterniflora in the Northern Tidal Flat of Sanmen Bay in Zhejiang Province |
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| Fu Yaqing,Yin Ping,Gao Fei,Liu Dongyan,Cao Ke,Tian Yuan.Remote Sensing Study on Spartina alterniflora in the Northern Tidal Flat of Sanmen Bay in Zhejiang Province[J].Periodical of Ocean University of China,2022,52(1):134-144. |
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| Authors: | Fu Yaqing Yin Ping Gao Fei Liu Dongyan Cao Ke Tian Yuan |
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| Institution: | (College of Marine Geosciences, Ocean University of China, Qingdao 266100, China;Qingdao Institute of Marine Geology, China Geological Survey, Qingdao 266071, China) |
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| Abstract: | The rapid spread of Spartina alterniflora in the tidal flats of Sanmen Bay in Zhejiang Province,has become the main vegetation type of tidal flats,squeezing the ecological space of the tidal flats,reducing the tidal capacity of the bay,causing the siltation of the tidal flats and the decline of water exchange capacity.The issue of proliferation has aroused great attention from the local ecological environment and marine management departments.This paper uses Landsat and Sentinel-2 series satellite remote sensing data,combined with UAV photogrammetry,to analyze the distribution and changes of Spartina alterniflora in the northern tidal flats of Sanmen Bay in the past 20 years.The results show that the northern tides of Sanmen Bay in the past 20 years Spartina alterniflora rapidly expanded,the area increased from 21.8 km2 in 2000 to the peak value of 38.6 km2 in 2017,with an annual expansion area of nearly 1 km2,mainly distributed in the port,Shuangpan-Tu,Sanshan-Tu and Xiangshan counties of Ninghai County Crab claw harbor and other bay top tidal flat areas.After 2017,part of the upper tidal flat where Spartina alterniflora grows was transformed into a marine aquaculture pond,and the area of Spartina alterniflora decreased overall.As of April 2020,the area of Spartina alterniflora was 34.9 km2,but the tide The expansion trend of Spartina in the lower part of the beach continues.Amplification is mainly along the two sides of the tidal groove and first patch and then continuous features.Altitude and changes in the hydrodynamic environment caused by human activities are the main factors in the area change of Spartina alterniflora. |
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| Keywords: | Sanmen Bay tidal flat Spartina alterniflora diffusion process |
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