文献类型：期刊文献

中文题名：2013―2023年英罗湾红树林空间分布动态变化

英文题名：Spatial Distribution Dynamics of Mangroves in Yingluo Bay from 2013 to 2023

作者：冯志颖[1];郑倚雯[2];张渊博[1];刘大召[3,4]

机构：[1]广东海洋大学海洋与气象学院,广东湛江524088;[2]广东海洋大学经济学院,广东湛江524088;[3]广东海洋大学电子与信息工程学院,广东湛江524088;[4]广东省海洋遥感与信息技术工程技术研究中心,广东湛江524003

年份：2025

卷号：45

期号：1

起止页码：62

中文期刊名：广东海洋大学学报

外文期刊名：Journal of Guangdong Ocean University

收录：北大核心2023、、北大核心

基金：国家自然科学基金(42206187);国家重点研发计划项目(2022YFC3103101);南方海洋科学与工程广东省实验室(广州)重大专项团队项目(GML2021GD0809)。

语种：中文

中文关键词：红树林;归一化植被指数;植被覆盖度;Hurst指数;可持续性

外文关键词：mangrove;normalized difference vegetation index;fractional vegetation cover;Hurst exponent;sustainability

中文摘要：【目的】研究2013―2023年英罗湾红树林植被健康和覆盖状态的空间分布变化,为红树林的管理提供科学依据。【方法】采用Landsat影像数据,计算2013―2023年英罗湾红树林覆盖度(FVC)和归一化植被指数(NDVI),并结合Hurst指数分析,量化时间序列数据中过去变动对未来变动的影响程度,以评估红树林植被健康与覆盖情况的动态变化。【结果与结论】通过一元线性回归分析并辅以F检验,对英罗湾红树林NDVI和FVC值的变化情况进行分类,47%区域NDVI值显著增加,45%区域NDVI值无显著增加和无显著减少,处于相对稳定状态,仅8%区域NDVI值显著减少;17%区域FVC值显著增加,74%区域的FVC值无显著增加和无显著减少,处于相对稳定状态,仅3%区域FVC值显著减少。结果表明,2013―2023年英罗湾红树林大部分区域在植被健康和覆盖状态方面得到改善或者处于良好的稳定状态,仅有英罗湾东南岸、西南岸和北岸等少数区域出现退化现象。Hurst指数分析显示,69%区域NDVI值呈增长?持续趋势,22%区域NDVI值呈增长?反持续趋势,6%区域NDVI值呈减少?持续趋势;55%区域FVC值表现出增长?持续趋势,15%区域FVC值呈增长?反持续趋势,15%区域FVC值呈减少?反持续趋势和9%区域FVC值呈减少?持续趋势。结果表明,英罗湾红树林大部分区域的健康和植被覆盖状态呈持续改善趋势,但英罗湾东南岸和西南岸少数区域存在持续退化风险。而英罗湾北岸区域的植被覆盖呈现减少?反持续趋势,说明该区域当前的减少趋势不会长期持续。

外文摘要：【Objective】To analyze the spatial distribution changes in the health and coverage status of mangrove vegetation in Yingluo Bay from 2013 to 2023and provide scientific evidence for the management of mangroves.【Method】Using Landsat imagery data,calculate the forest cover(FVC)and normalized vegetation index(NDVI)of Yingluo Bay mangroves from 2013 to 2023.Combine this with Hurst index analysis to quantify the extent to which past changes influence future changes in time series data,thereby evaluating the dynamic changes in mangrove vegetation health and coverage.【Result and Conclusion】The study used univariate linear regression and an F-test to categorize changes in the NDVI and FVC of Yingluo Bay's mangroves.Results showed that 47%of the area saw a significant increase in NDVI,45%remained stable,and 8%experienced a significant decrease.For FVC,17%of the area had a significant increase,74%remained stable,and 3%saw a significant decrease.Most mangrove areas in Yingluo Bay improved or stayed stable from 2013 to 2023,except for some parts of the southeast,southwest,and north coasts.Hurst exponent analysis revealed that for NDVI,69%of the area had an increasing?sustained trend,22%an increasing?antisustained trend,and 6%a decreasing?sustained trend.For FVC,55%of the area showed an increasing?sustained trend,15%an increasing?antisustained trend,15%a decreasing?antisustained trend,and 9%a decreasing?sustained trend.This indicates that most mangrove areas have sustained improving trends in health and vegetation cover.However,some southeast and southwest coast areas face sustained degradation risks.The north coast's vegetation cover has a decreasing?antisustained trend,so its decline won't last long.