Mangrove Phenology and Environmental Drivers Derived from Remote Sensing in Southern Thailand
Mangrove Phenology and Environmental Drivers Derived from Remote Sensing in Southern Thailand
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DOI：
10.3390/rs11080955
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发表时间：
2019-04
期刊：
影响因子：
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通讯作者：
Veeranun Songsom;Werapong Koedsin;R. Ritchie;A. Huete
中科院分区：
文献类型：
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作者：
Veeranun Songsom;Werapong Koedsin;R. Ritchie;A. Huete
植被物候是植被生长的年度周期时序。红树林物候是评估红树林生存能力的重要组成部分，包括季节开始(SOS)、季节结束(EOS)、季节高峰(POS)和季节长度(LOS)。潜在的环境驱动因素包括气温(Ta)、表面温度(Ts)、海面温度(SST)、降雨量、海面盐度(SSS)和辐射通量(Ra)。增强型植被指数(EVI)是根据中分辨率成像光谱仪(MODIS，MOD13Q1)从2003年到2012年在五个研究点的数据计算得出的。其中四个红树林研究地点位于安达曼海的马来半岛，一个地点位于泰国湾。这项研究的目的是描述赤道泰国印度-马来红树林的物候模式，确定红树林季节性的气候和水生驱动因素，并将红树林物候与周围的山地热带森林进行比较。结果表明，红树林生长的季节性明显不同于周围的陆地热带森林。红树林生长季节大约持续8-9个月，从4月到6月，在8月到10月达到顶峰，在次年1月到2月结束。10年趋势分析显示，安达曼海站点的SOS、POS和EOS有显著的延迟趋势，但只有泰国湾站点的EOS有明显的延迟趋势。累积降雨量可能是影响红树林后期物候的主要因素。
Vegetation phenology is the annual cycle timing of vegetation growth. Mangrove phenology is a vital component to assess mangrove viability and includes start of season (SOS), end of season (EOS), peak of season (POS), and length of season (LOS). Potential environmental drivers include air temperature (Ta), surface temperature (Ts), sea surface temperature (SST), rainfall, sea surface salinity (SSS), and radiation flux (Ra). The Enhanced vegetation index (EVI) was calculated from Moderate Resolution Imaging Spectroradiometer (MODIS, MOD13Q1) data over five study sites between 2003 and 2012. Four of the mangrove study sites were located on the Malay Peninsula on the Andaman Sea and one site located on the Gulf of Thailand. The goals of this study were to characterize phenology patterns across equatorial Thailand Indo-Malay mangrove forests, identify climatic and aquatic drivers of mangrove seasonality, and compare mangrove phenologies with surrounding upland tropical forests. Our results show the seasonality of mangrove growth was distinctly different from the surrounding land-based tropical forests. The mangrove growth season was approximately 8–9 months duration, starting in April to June, peaking in August to October and ending in January to February of the following year. The 10-year trend analysis revealed significant delaying trends in SOS, POS, and EOS for the Andaman Sea sites but only for EOS at the Gulf of Thailand site. The cumulative rainfall is likely to be the main factor driving later mangrove phenologies.