Article(id=1224795037289038015, tenantId=1146029695717560320, journalId=1149651085930835976, issueId=1224795034394968191, articleNumber=null, orderNo=null, doi=10.12284/hyxb2022014, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=research-article, receivedDate=1618156800000, receivedDateStr=2021-04-12, revisedDate=1629907200000, revisedDateStr=2021-08-26, acceptedDate=null, acceptedDateStr=null, onlineDate=1769943492480, onlineDateStr=2026-02-01, pubDate=1642176000000, pubDateStr=2022-01-15, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1769943492480, onlineIssueDateStr=2026-02-01, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1769943492480, creator=13701087609, updateTime=1769943492480, updator=13701087609, issue=Issue{id=1224795034394968191, tenantId=1146029695717560320, journalId=1149651085930835976, year='2022', volume='44', issue='1', pageStart='1', pageEnd='154', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1769943491791, creator=13701087609, updateTime=1769995853907, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1225014657090469924, tenantId=1146029695717560320, journalId=1149651085930835976, issueId=1224795034394968191, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1225014657094664229, tenantId=1146029695717560320, journalId=1149651085930835976, issueId=1224795034394968191, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=125, endPage=136, ext={EN=ArticleExt(id=1224795038874484949, articleId=1224795037289038015, tenantId=1146029695717560320, journalId=1149651085930835976, language=EN, title=Spatiotemporal dynamic remote sensing monitoring of typical wetland vegetation in the Current Huanghe River Estuary Reserve, columnId=1194652705852465724, journalTitle=Haiyang Xuebao, columnName=Article, runingTitle=null, highlight=null, articleAbstract=
The wetland vegetation is an important part of coastal wetlands, and its dynamic changes affect the structures and functions of wetland ecosystem. Therefore, it is of great significance to monitor and evaluate the long-term changes of wetland vegetation by remote sensing technology for the management of coastal resources and ecological protection. In this paper, we used multi-temporal Landsat satellite images as data sources, combined object-oriented method and random forest algorithm to achieve accurate classification of typical wetland vegetation in the Current Huanghe River Estuary Reserve, and revealed the spatiotemporal variation characteristics of Phragmites australis, Suaeda salsa and Spartina alterniflora in the study area from 2000 to 2020. It has been verified that the overall accuracy of wetland vegetation mapping is between 84.74% and 92.39%, and the Kappa coefficient is between 0.81 and 0.91. The results of long time series classification show that Phragmites australis is the dominant species in the Current Huanghe Estuary Reserve, and its distribution area is maintained at more than 6% and the overall growth is steady. The area of Suaeda salsa shows a decreasing trend since 2006. The dominance degree of Suaeda salsa is decreasing continuously and the degree of fragmentation is severe. The area of Spartina alterniflora increased year by year from 211.85 hm2 in 2002 to 5267.79 hm2 in 2020. The expansion process of Spartina alterniflora in the reserve could be divided into three stages: in the initial expansion period before 2008, the growth of Spartina alterniflora was unstable; from 2008 to 2014, there was a rapid expansion stage, with an average annual expansion rate of 54%, which showed that the seaward expansion invaded the plain and the landward expansion invaded the habitat of Suaeda salsa in space; since 2014, Spartina alterniflora has been growing slowly, entering a stable growth period, and the annual average expansion rate is only 9%.
, correspAuthors=Shenliang Chen, authorNote=null, correspAuthorsNote=null, copyrightStatement=Copyright © 2022 Pratacultural Science. All rights reserved., copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, authorCompany=null, fund=null, authors=null, authorsList=Chenyu Zhang, Shenliang Chen, Peng Li, Qinglan Liu), CN=ArticleExt(id=1224795041604977046, articleId=1224795037289038015, tenantId=1146029695717560320, journalId=1149651085930835976, language=CN, title=现行黄河口保护区典型湿地植被时空动态遥感监测, columnId=1149698756456657529, journalTitle=海洋学报, columnName=论文, runingTitle=null, highlight=null, articleAbstract=
滩涂植被是滨海湿地的重要组成部分,其动态变化影响着湿地生态系统的结构和功能。利用遥感技术监测和评估湿地植被的长期变化对于海岸带资源管理和生态保护具有重要意义。本文以多时相Landsat卫星影像为数据源,结合面向对象和随机森林算法实现现行黄河口保护区内典型湿地植被的精准分类,揭示了2000−2020年研究区内芦苇、盐地碱蓬和互花米草的时空变化特征。经验证,湿地植被制图的总体精度为84.74%~92.39%,Kappa系数为0.81~0.91。长时序的分类结果表明,芦苇是现行黄河口保护区内的优势物种,分布面积占比维持在6%以上且总体保持平稳增长;盐地碱蓬面积自2006年开始呈减少趋势,优势度不断减小且破碎化程度严重。互花米草由2002年的221.85 hm2增加到2020年的5267.79 hm2,其扩张过程可分为3个阶段:2008年以前为扩张初期,互花米草生长不稳定;2008−2014年为快速扩张阶段,年平均扩展率为54%,空间上表现为向海扩张侵占光滩和向陆扩张侵占碱蓬生境;2014年至今为缓慢增长阶段,进入生长的稳定期,年平均扩展率仅为9%。
, correspAuthors=陈沈良, authorNote=null, correspAuthorsNote=
, copyrightStatement=版权所有©《海洋学报》编辑部 2022
张晨宇,陈沈良,李鹏,等. 现行黄河口保护区典型湿地植被时空动态遥感监测[J]. 海洋学报,2022,44(1):125–136Zhang Chenyu,Chen Shenliang,Li Peng, et al. Spatiotemporal dynamic remote sensing monitoring of typical wetland vegetation in the Current Huanghe River Estuary Reserve[J]. Haiyang Xuebao,2022, 44(1):125–136
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张晨宇(1996-),女,江苏省徐州市人,主要从事河口海岸遥感及应用研究。E-mail:51193904010@stu.ecnu.edu.cn
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张晨宇(1996-),女,江苏省徐州市人,主要从事河口海岸遥感及应用研究。E-mail:51193904010@stu.ecnu.edu.cn
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Spartina alterniflora in the coastal areas of China during 1990 to 2015[D]. Changchun: University of Chinese Academy of Sciences (Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences), 2018., articleTitle=null, refAbstract=null), Reference(id=1225365918801375735, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1224795037289038015, doi=null, pmid=null, pmcid=null, year=null, volume=null, issue=null, pageStart=null, pageEnd=null, url=null, language=null, rfNumber=36, rfOrder=45, authorNames=null, journalName=null, refType=null, unstructuredReference=Zhang Cheng, Gong Zhaoning, Qiu Huachang, et al. Mapping typical salt-marsh species in the Yellow River Delta wetland supported by temporal-spatial-spectral multidimensional features[J]. Science of the Total Environment, 2021, 783: 147061., articleTitle=null, refAbstract=null), Reference(id=1225365918881067519, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1224795037289038015, doi=null, pmid=null, pmcid=null, year=null, volume=null, issue=null, pageStart=null, pageEnd=null, url=null, language=null, rfNumber=37, rfOrder=46, authorNames=null, journalName=null, refType=null, unstructuredReference=赵可夫, 冯立田, 张圣强, 等. 黄河三角洲不同生态型芦苇对盐度适应生理的研究Ⅱ. 不同生态型芦苇的光合气体交换特点[J]. 生态学报, 2000, 20(5): 795−799., articleTitle=null, refAbstract=null), Reference(id=1225365918981730821, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1224795037289038015, doi=null, pmid=null, pmcid=null, year=null, volume=null, issue=null, pageStart=null, pageEnd=null, url=null, language=null, rfNumber=37, rfOrder=47, authorNames=null, journalName=null, refType=null, unstructuredReference=Zhao Kefu, Feng Litian, Zhang Shengqiang, et al. The salinity-adaptation physiology in different ecotypes of
Phragmites communis in the Yellow River Delta Ⅱ. The characteristics of photosynthetic gas exchange in different ecotypes of
Phragmites communis[J]. Acta Ecologica Sinica, 2000, 20(5): 795−799., articleTitle=null, refAbstract=null)], funds=[Fund(id=1225365911759138939, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1224795037289038015, awardId=U1706214, language=CN, fundingSource=国家自然科学基金(U1706214), fundOrder=null, country=null), Fund(id=1225365911910133894, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1224795037289038015, awardId=2017YFC0405503, language=CN, fundingSource=国家重点研发计划(2017YFC0405503), fundOrder=null, country=null)], companyList=[AuthorCompany(id=1225365899423691329, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1224795037289038015, xref=null, ext=[AuthorCompanyExt(id=1225365899453051458, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1224795037289038015, companyId=1225365899423691329, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=1. State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200241, China), AuthorCompanyExt(id=1225365899507577412, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1224795037289038015, companyId=1225365899423691329, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=1.华东师范大学 河口海岸学国家重点实验室,上海 200241)])], figs=[ArticleFig(id=1225365905387991872, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1224795037289038015, language=EN, label=Fig. 1, caption=
Location of the study area, figureFileSmall=fkgMos+tBLdw8Q4tohEf1Q==, figureFileBig=VGmgLXyzUlTdzMMy2+VAfw==, tableContent=null), ArticleFig(id=1225365905534792529, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1224795037289038015, language=CN, label=图1, caption=
研究区位置, figureFileSmall=fkgMos+tBLdw8Q4tohEf1Q==, figureFileBig=VGmgLXyzUlTdzMMy2+VAfw==, tableContent=null), ArticleFig(id=1225365905669010270, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1224795037289038015, language=EN, label=Fig. 2, caption=
Distribution of typical wetland vegetation in the Current Huanghe River Estuary Reserve from 2000 to 2020, figureFileSmall=Zw1Rn+kCdRjSXN72xdZ3FA==, figureFileBig=D8jQbCcKrdyLrC2O31SwNQ==, tableContent=null), ArticleFig(id=1225365907027964778, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1224795037289038015, language=CN, label=图2, caption=
2000−2020年现行黄河口保护区典型湿地植被分布, figureFileSmall=Zw1Rn+kCdRjSXN72xdZ3FA==, figureFileBig=D8jQbCcKrdyLrC2O31SwNQ==, tableContent=null), ArticleFig(id=1225365907162182522, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1224795037289038015, language=EN, label=Fig. 3, caption=
Change trend of landscape pattern index of three typical wetland vegetations from 2000 to 2020, figureFileSmall=CUAZ1i7ST9lXRIEwpq/1fA==, figureFileBig=TsPEsdoofW7xKvfUt+srIw==, tableContent=null), ArticleFig(id=1225365907279623047, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1224795037289038015, language=CN, label=图3, caption=
2000−2020年3种典型湿地植被的景观格局指数变化趋势, figureFileSmall=CUAZ1i7ST9lXRIEwpq/1fA==, figureFileBig=TsPEsdoofW7xKvfUt+srIw==, tableContent=null), ArticleFig(id=1225365907413840788, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1224795037289038015, language=EN, label=Fig. 4, caption=
Distribution pattern of Spartina alterniflora in different invasive years from 2002 to 2020 and the distributions of baseline and transects used by DSAS to calculate the expansion rate of S. alterniflora from 2014 to 2020, figureFileSmall=sVVpcwH3A8z1zW2XXQgg2Q==, figureFileBig=V/d9wut+gMcLxe0JceMX3Q==, tableContent=null), ArticleFig(id=1225365907514504101, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1224795037289038015, language=CN, label=图4, caption=
2002−2020年不同入侵年份互花米草分布格局及DSAS 计算2014−2020年互花米草扩张速率所用基线和断面分布, figureFileSmall=sVVpcwH3A8z1zW2XXQgg2Q==, figureFileBig=V/d9wut+gMcLxe0JceMX3Q==, tableContent=null), ArticleFig(id=1225365907657110447, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1224795037289038015, language=EN, label=Fig. 5, caption=
Variation of Spartina alterniflora plaque area in different regions, figureFileSmall=f+gL6mOhzQsvnKtVvXRwhg==, figureFileBig=Z8N+tNT9sn1Go8Wyb7J7cw==, tableContent=null), ArticleFig(id=1225365907761968063, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1224795037289038015, language=CN, label=图5, caption=
不同区域互花米草斑块面积变化, figureFileSmall=f+gL6mOhzQsvnKtVvXRwhg==, figureFileBig=Z8N+tNT9sn1Go8Wyb7J7cw==, tableContent=null), ArticleFig(id=1225365907929740236, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1224795037289038015, language=EN, label=Fig. 6, caption=
Seaward and landward expansion rates of Spartina alterniflora in A−E areas, figureFileSmall=b4XipyQR+zY/7frYSrYZcg==, figureFileBig=k/hoMHaKhuOsX7g8lP/pOw==, tableContent=null), ArticleFig(id=1225365908047180760, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1224795037289038015, language=CN, label=图6, caption=
区域A−E互花米草向海和向陆的扩张速率, figureFileSmall=b4XipyQR+zY/7frYSrYZcg==, figureFileBig=k/hoMHaKhuOsX7g8lP/pOw==, tableContent=null), ArticleFig(id=1225365908139455456, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1224795037289038015, language=EN, label=Table 1, caption=
Satellite data information
, figureFileSmall=null, figureFileBig=null, tableContent=
| 影像类型 | 成像时间 | | 影像类型 | 成像时间 | | 影像类型 | 成像时间 |
| Landsat-7 ETM+ | 2000年5月2日 | | Landsat-7 ETM+ | 2006年10月26日 | | Landsat-8 OLI | 2014年7月20日 |
| Landsat-5 TM | 2000年9月15日 | | Landsat-5 TM | 2008年6月1日 | | Landsat-8 OLI | 2014年10月24日 |
| Landsat-5 TM | 2000年10月17日 | | Landsat-5 TM | 2008年9月5日 | | Landsat-7 ETM+ | 2016年5月30日 |
| Landsat-7 ETM+ | 2002年5月24日 | | Landsat-7 ETM+ | 2008年10月31日 | | Landsat-8 OLI | 2016年8月26日 |
| Landsat-7 ETM+ | 2002年9月29日 | | Landsat-5 TM | 2010年6月7日 | | Landsat-8 OLI | 2016年11月14日 |
| Landsat-5 TM | 2002年10月23日 | | Landsat-5 TM | 2010年9月11日 | | Landsat-8 OLI | 2018年5月28日 |
| Landsat-7 ETM+ | 2004年5月13日 | | Landsat-5 TM | 2010年10月13日 | | Landsat-8 OLI | 2018年9月17日 |
| Landsat-7 ETM+ | 2004年9月18日 | | Landsat-7 ETM+ | 2012年5月19日 | | Landsat-8 OLI | 2018年10月19日 |
| Landsat-7 ETM+ | 2004年10月20日 | | Landsat-7 ETM+ | 2012年8月23日 | | Landsat-8 OLI | 2020年5月17日 |
| Landsat-7 ETM+ | 2006年6月4日 | | Landsat-7 ETM+ | 2012年10月26日 | | Landsat-7 ETM+ | 2020年9月30日 |
| Landsat-7 ETM+ | 2006年9月24日 | | Landsat-8 OLI | 2014年5月1日 | | Landsat-8 OLI | 2020年10月24日 |
), ArticleFig(id=1225365908378530801, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1224795037289038015, language=CN, label=表1, caption=
卫星数据信息
, figureFileSmall=null, figureFileBig=null, tableContent=
| 影像类型 | 成像时间 | | 影像类型 | 成像时间 | | 影像类型 | 成像时间 |
| Landsat-7 ETM+ | 2000年5月2日 | | Landsat-7 ETM+ | 2006年10月26日 | | Landsat-8 OLI | 2014年7月20日 |
| Landsat-5 TM | 2000年9月15日 | | Landsat-5 TM | 2008年6月1日 | | Landsat-8 OLI | 2014年10月24日 |
| Landsat-5 TM | 2000年10月17日 | | Landsat-5 TM | 2008年9月5日 | | Landsat-7 ETM+ | 2016年5月30日 |
| Landsat-7 ETM+ | 2002年5月24日 | | Landsat-7 ETM+ | 2008年10月31日 | | Landsat-8 OLI | 2016年8月26日 |
| Landsat-7 ETM+ | 2002年9月29日 | | Landsat-5 TM | 2010年6月7日 | | Landsat-8 OLI | 2016年11月14日 |
| Landsat-5 TM | 2002年10月23日 | | Landsat-5 TM | 2010年9月11日 | | Landsat-8 OLI | 2018年5月28日 |
| Landsat-7 ETM+ | 2004年5月13日 | | Landsat-5 TM | 2010年10月13日 | | Landsat-8 OLI | 2018年9月17日 |
| Landsat-7 ETM+ | 2004年9月18日 | | Landsat-7 ETM+ | 2012年5月19日 | | Landsat-8 OLI | 2018年10月19日 |
| Landsat-7 ETM+ | 2004年10月20日 | | Landsat-7 ETM+ | 2012年8月23日 | | Landsat-8 OLI | 2020年5月17日 |
| Landsat-7 ETM+ | 2006年6月4日 | | Landsat-7 ETM+ | 2012年10月26日 | | Landsat-7 ETM+ | 2020年9月30日 |
| Landsat-7 ETM+ | 2006年9月24日 | | Landsat-8 OLI | 2014年5月1日 | | Landsat-8 OLI | 2020年10月24日 |
), ArticleFig(id=1225365908500165624, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1224795037289038015, language=EN, label=Table 2, caption=
Sample information of different feature types from 2000 to 2020
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| 类型 | 训练样本个数(对象)/验证样本个数(个) |
| 2000年 | 2002年 | 2004年 | 2006年 | 2008年 | 2010年 | 2012年 | 2014年 | 2016年 | 2018年 | 2020年 |
| 注:−代表该年份研究区内无此地物类型分布。 |
| 芦苇 | 42/104 | 45/105 | 44/112 | 47/131 | 60/160 | 74/187 | 76/216 | 83/215 | 92/203 | 98/232 | 102/236 |
| 碱蓬 | 30/92 | 38/115 | 45/135 | 30/115 | 30/102 | 32/136 | 33/118 | 39/113 | 41/120 | 44/124 | 43/160 |
| 互花米草 | − | 6/25 | 5/21 | 2/10 | 5/32 | 12/46 | 38/112 | 48/138 | 80/220 | 92/240 | 95/262 |
| 光滩 | 37/118 | 38/121 | 31/108 | 36/105 | 42/110 | 38/125 | 31/114 | 46/129 | 45/102 | 51/127 | 45/132 |
| 水体 | 21/68 | 26/82 | 29/84 | 25/87 | 30/96 | 42/114 | 34/102 | 38/117 | 44/103 | 45/113 | 47/125 |
| 其他 | 15/38 | 16/32 | 17/30 | 15/32 | 16/30 | 31/32 | 32/48 | 30/48 | 30/52 | 36/64 | 38/85 |
), ArticleFig(id=1225365908621800448, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1224795037289038015, language=CN, label=表2, caption=
2000−2020年不同地物类型的样本信息
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| 类型 | 训练样本个数(对象)/验证样本个数(个) |
| 2000年 | 2002年 | 2004年 | 2006年 | 2008年 | 2010年 | 2012年 | 2014年 | 2016年 | 2018年 | 2020年 |
| 注:−代表该年份研究区内无此地物类型分布。 |
| 芦苇 | 42/104 | 45/105 | 44/112 | 47/131 | 60/160 | 74/187 | 76/216 | 83/215 | 92/203 | 98/232 | 102/236 |
| 碱蓬 | 30/92 | 38/115 | 45/135 | 30/115 | 30/102 | 32/136 | 33/118 | 39/113 | 41/120 | 44/124 | 43/160 |
| 互花米草 | − | 6/25 | 5/21 | 2/10 | 5/32 | 12/46 | 38/112 | 48/138 | 80/220 | 92/240 | 95/262 |
| 光滩 | 37/118 | 38/121 | 31/108 | 36/105 | 42/110 | 38/125 | 31/114 | 46/129 | 45/102 | 51/127 | 45/132 |
| 水体 | 21/68 | 26/82 | 29/84 | 25/87 | 30/96 | 42/114 | 34/102 | 38/117 | 44/103 | 45/113 | 47/125 |
| 其他 | 15/38 | 16/32 | 17/30 | 15/32 | 16/30 | 31/32 | 32/48 | 30/48 | 30/52 | 36/64 | 38/85 |
), ArticleFig(id=1225365908772794377, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1224795037289038015, language=EN, label=Table 3, caption=
The initial feature space
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| 特征名称 |
| 光谱特征 | 蓝波段均值、绿波段均值、红波段均值、近红外波段均值、短波红外1波段均值、短波红外2波段均值、蓝波段标准差、绿波段标准差、红波段标准差、近红外波段标准差、短波红外1波段标准差、短波红外2波段标准差、亮度、最大化差异 |
| 几何特征 | 宽度、长度、长宽比、不对称性、边界指数、紧凑性、密度、形状指数 |
| 纹理特征 | 基于灰度共生矩阵的第一主成分的平均值、方差、同质性、对比度、非相似性、熵、角二矩阵和相关性 |
| 其他特征 | 归一化植被指数、差值植被指数、比值植被指数、归一化水体指数、改进归一化水体指数 |
), ArticleFig(id=1225365908911206420, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1224795037289038015, language=CN, label=表3, caption=
初始特征空间
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| 特征名称 |
| 光谱特征 | 蓝波段均值、绿波段均值、红波段均值、近红外波段均值、短波红外1波段均值、短波红外2波段均值、蓝波段标准差、绿波段标准差、红波段标准差、近红外波段标准差、短波红外1波段标准差、短波红外2波段标准差、亮度、最大化差异 |
| 几何特征 | 宽度、长度、长宽比、不对称性、边界指数、紧凑性、密度、形状指数 |
| 纹理特征 | 基于灰度共生矩阵的第一主成分的平均值、方差、同质性、对比度、非相似性、熵、角二矩阵和相关性 |
| 其他特征 | 归一化植被指数、差值植被指数、比值植被指数、归一化水体指数、改进归一化水体指数 |
), ArticleFig(id=1225365909120921631, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1224795037289038015, language=EN, label=Table 4, caption=
Preferred feature distribution
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| 月份 | 优选特征 |
| 5月 | 蓝波段均值、绿波段标准差、比值植被指数 |
| 9月 | 蓝波段标准差、短波红外1波段标准差、短波红外2波段均值、亮度、归一化植被指数、差值植被指数、改进归一化水体指数、 不对称性、长宽比、紧凑性、基于灰度共生矩阵的方差、对比度、熵 |
| 10月 | 红波段标准差、短波红外2波段均值、短波红外2波段标准差、亮度、归一化植被指数、改进归一化水体指数、紧凑性、密度、 基于灰度共生矩阵的对比度、方差 |
), ArticleFig(id=1225365909339025454, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1224795037289038015, language=CN, label=表4, caption=
优选特征分布
, figureFileSmall=null, figureFileBig=null, tableContent=
| 月份 | 优选特征 |
| 5月 | 蓝波段均值、绿波段标准差、比值植被指数 |
| 9月 | 蓝波段标准差、短波红外1波段标准差、短波红外2波段均值、亮度、归一化植被指数、差值植被指数、改进归一化水体指数、 不对称性、长宽比、紧凑性、基于灰度共生矩阵的方差、对比度、熵 |
| 10月 | 红波段标准差、短波红外2波段均值、短波红外2波段标准差、亮度、归一化植被指数、改进归一化水体指数、紧凑性、密度、 基于灰度共生矩阵的对比度、方差 |
), ArticleFig(id=1225365909552934973, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1224795037289038015, language=EN, label=Table 5, caption=
Landscape pattern index and its ecological significance
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| 指数 | 公式描述 | 生态意义 |
| 注:aij表示斑块ij的面积;A表示所有景观总面积;E表示所有斑块边界的总长度;gij表示相应景观类型的相似邻接斑块数量;NP表示斑块个数。 |
| 斑块面积(Class Area,CA) | ${{\rm{CA} }=\sum\limits_{j=1}^{n}{a}_{ij} }$ | 表征某一类型所有斑块的总面积,可度量景观的组分 |
斑块所占景观面积比例 (Percent of Landscape,PLAND) | ${ {\rm{PLAND} }=\dfrac{\sum\limits_{j=1}^{n}{a}_{ij} }{A}\times 100\text{%}}$ | 表征某一斑块类型的面积占景观总面积的百分比,是确定景观中优势物种的重要依据 |
最大斑块指数 (Largest Patch Index,LPI) | ${{\rm{LPI} } = \max\limits_ {j = 1}^n \left( { {a_{ij} } } \right)/A}$ | 表征某一类型中的最大斑块面积占整个景观的比例,有助于确定景观的优势类型 |
| 平均斑块面积(AREA_Mean) | ${{\rm{AREA} }\_{\rm{Mean} }=\mathrm{C}\mathrm{A}/NP}$ | 表征景观的破碎程度,值越小,斑块类型越破碎 |
斑块形状指数 (Landscape Shape Index,LSI) | ${ {\rm{LSI} }=0.25E/\sqrt{A} }$ | 反映景观类型的形状变化,值越大,斑块形状越复杂 |
| 聚合指数(Aggregation Index,AI) | $ {{\rm{AI} }=\dfrac{ {g}_{ij} }{ {\max}{g}_{ij} }\times 100 }$ | 反映景观类型中斑块之间的聚散程度,值越大,斑块内部的连接度越高,而破碎度越低 |
), ArticleFig(id=1225365909666181187, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1224795037289038015, language=CN, label=表5, caption=
景观格局指数及其生态意义
, figureFileSmall=null, figureFileBig=null, tableContent=
| 指数 | 公式描述 | 生态意义 |
| 注:aij表示斑块ij的面积;A表示所有景观总面积;E表示所有斑块边界的总长度;gij表示相应景观类型的相似邻接斑块数量;NP表示斑块个数。 |
| 斑块面积(Class Area,CA) | ${{\rm{CA} }=\sum\limits_{j=1}^{n}{a}_{ij} }$ | 表征某一类型所有斑块的总面积,可度量景观的组分 |
斑块所占景观面积比例 (Percent of Landscape,PLAND) | ${ {\rm{PLAND} }=\dfrac{\sum\limits_{j=1}^{n}{a}_{ij} }{A}\times 100\text{%}}$ | 表征某一斑块类型的面积占景观总面积的百分比,是确定景观中优势物种的重要依据 |
最大斑块指数 (Largest Patch Index,LPI) | ${{\rm{LPI} } = \max\limits_ {j = 1}^n \left( { {a_{ij} } } \right)/A}$ | 表征某一类型中的最大斑块面积占整个景观的比例,有助于确定景观的优势类型 |
| 平均斑块面积(AREA_Mean) | ${{\rm{AREA} }\_{\rm{Mean} }=\mathrm{C}\mathrm{A}/NP}$ | 表征景观的破碎程度,值越小,斑块类型越破碎 |
斑块形状指数 (Landscape Shape Index,LSI) | ${ {\rm{LSI} }=0.25E/\sqrt{A} }$ | 反映景观类型的形状变化,值越大,斑块形状越复杂 |
| 聚合指数(Aggregation Index,AI) | $ {{\rm{AI} }=\dfrac{ {g}_{ij} }{ {\max}{g}_{ij} }\times 100 }$ | 反映景观类型中斑块之间的聚散程度,值越大,斑块内部的连接度越高,而破碎度越低 |
), ArticleFig(id=1225365909796204616, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1224795037289038015, language=EN, label=Table 6, caption=
Results of accuracy verification
, figureFileSmall=null, figureFileBig=null, tableContent=
| 类别 | 2000年 | 2002年 | 2004年 | 2006年 | 2008年 | 2010年 | 2012年 | 2014年 | 2016年 | 2018年 | 2020年 | 平均值 |
| 注:a为制图精度(%);b为用户精度(%);−代表该年份研究区内无此地物类型分布。 |
| 芦苇 | 96.15a | 95.24a | 93.75a | 90.84a | 92.50a | 87.70a | 93.52a | 88.84a | 98.03a | 91.81a | 93.64a | 92.91a |
| 92.59b | 99.01b | 96.33b | 88.81b | 94.27b | 96.47b | 91.82b | 83.77b | 93.87b | 90.64b | 94.44b | 92.90b |
| 碱蓬 | 81.52a | 82.61a | 82.22a | 86.09a | 89.22a | 84.56a | 88.14a | 84.07a | 88.33a | 83.87a | 87.41a | 85.28a |
| 84.27b | 87.16b | 86.72b | 81.15b | 81.25b | 86.47b | 87.39b | 83.33b | 80.92b | 85.95b | 84.29b | 84.44b |
| 互花米草 | − | 84.00a | 95.24a | 90.00a | 84.380a | 82.61a | 84.82a | 86.96a | 90.91a | 92.50a | 96.18a | 88.57a |
| − | 100.00b | 90.91b | 90.00b | 100.00b | 84.44b | 89.62b | 81.63b | 97.56b | 94.07b | 93.33b | 92.16b |
| 总体精度/% | 88.57 | 89.58 | 88.57 | 86.88 | 89.81 | 91.09 | 90.70 | 84.74 | 91.75 | 90.22 | 92.39 | 89.48 |
| Kappa系数 | 0.85 | 0.87 | 0.86 | 0.83 | 0.87 | 0.89 | 0.88 | 0.81 | 0.89 | 0.88 | 0.91 | 0.87 |
), ArticleFig(id=1225365909955588184, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1224795037289038015, language=CN, label=表6, caption=
精度验证结果
, figureFileSmall=null, figureFileBig=null, tableContent=
| 类别 | 2000年 | 2002年 | 2004年 | 2006年 | 2008年 | 2010年 | 2012年 | 2014年 | 2016年 | 2018年 | 2020年 | 平均值 |
| 注:a为制图精度(%);b为用户精度(%);−代表该年份研究区内无此地物类型分布。 |
| 芦苇 | 96.15a | 95.24a | 93.75a | 90.84a | 92.50a | 87.70a | 93.52a | 88.84a | 98.03a | 91.81a | 93.64a | 92.91a |
| 92.59b | 99.01b | 96.33b | 88.81b | 94.27b | 96.47b | 91.82b | 83.77b | 93.87b | 90.64b | 94.44b | 92.90b |
| 碱蓬 | 81.52a | 82.61a | 82.22a | 86.09a | 89.22a | 84.56a | 88.14a | 84.07a | 88.33a | 83.87a | 87.41a | 85.28a |
| 84.27b | 87.16b | 86.72b | 81.15b | 81.25b | 86.47b | 87.39b | 83.33b | 80.92b | 85.95b | 84.29b | 84.44b |
| 互花米草 | − | 84.00a | 95.24a | 90.00a | 84.380a | 82.61a | 84.82a | 86.96a | 90.91a | 92.50a | 96.18a | 88.57a |
| − | 100.00b | 90.91b | 90.00b | 100.00b | 84.44b | 89.62b | 81.63b | 97.56b | 94.07b | 93.33b | 92.16b |
| 总体精度/% | 88.57 | 89.58 | 88.57 | 86.88 | 89.81 | 91.09 | 90.70 | 84.74 | 91.75 | 90.22 | 92.39 | 89.48 |
| Kappa系数 | 0.85 | 0.87 | 0.86 | 0.83 | 0.87 | 0.89 | 0.88 | 0.81 | 0.89 | 0.88 | 0.91 | 0.87 |
), ArticleFig(id=1225365910068834400, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1224795037289038015, language=EN, label=Table 7, caption=
Area increasing rate and annual expansion rate of Spartina alterniflora in the study area
, figureFileSmall=null, figureFileBig=null, tableContent=
| 项目 | 2008−2010年 | 2010−2012年 | 2012−2014年 | 2014−2016年 | 2016−2018年 | 2018−2020年 |
| 面积增速/(hm2·a−1) | 97.56 | 799.88 | 434.25 | 322.81 | 240.68 | 605.84 |
| 年扩展率/% | 31.53 | 111.42 | 19.16 | 10.45 | 3.10 | 13.97 |
), ArticleFig(id=1225365911448760424, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1224795037289038015, language=CN, label=表7, caption=
研究区互花米草的新增面积增速及年扩展率
, figureFileSmall=null, figureFileBig=null, tableContent=
| 项目 | 2008−2010年 | 2010−2012年 | 2012−2014年 | 2014−2016年 | 2016−2018年 | 2018−2020年 |
| 面积增速/(hm2·a−1) | 97.56 | 799.88 | 434.25 | 322.81 | 240.68 | 605.84 |
| 年扩展率/% | 31.53 | 111.42 | 19.16 | 10.45 | 3.10 | 13.97 |
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