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Satellite data analysis for identification of groundwater salinization effects on coastal forest for monitoring purposes

机译：卫星数据分析，用于识别对沿海林下森林监测目的的影响

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In the phreatic aquifer below the San Vitale pinewood (Ravenna, Italy), natural and anthropogenic land subsidence, the low topography and the artificial drainage system have led to widespread saltwater intrusion. Since changes in the groundwater concentration induce variations in the vegetation properties, recognizable by different spectral bands, a comparison between satellite images, ASTER and Worldview-2, was made using the NDVI. The aim was to identify the portions of pinewood affected by salinization through a procedure that could reduce the expensive and time consuming ground monitoring campaigns. Moreover, the Worldview-2 high resolutions were used to investigate the Thermophilic Deciduous Forest (TDF) spectral behaviour without the influence of the allochthonous Pinus pinea species that is scattered throughout the pinewood. The NDVI, calculated with traditional bands, identified the same stressed areas using both satellite data. Instead, the new Red-Edge band of the Worldview-2 image allowed a greater correlation between NDVI and groundwater salinity.
机译：在San Vitale Pinewood（Ravenna，Italy）的潜水层中，天然和人为地区沉降，低地形和人工排水系统导致了广泛的咸水侵扰。由于地下水浓度的变化诱导植被特性的变化，因此使用不同的光谱频带可识别，因此使用NDVI进行卫星图像，哈雷特图像和世界观-2之间的比较。目的是通过可以减少昂贵和耗时的地面监测活动的程序来确定受盐渍化影响的松木部分的一部分。此外，WorldView-2高分辨率用于探讨嗜热落叶林（TDF）光谱行为，而不会影响整个松树散落的散发出的脱落的樟子松。使用传统频带计算的NDVI，使用卫星数据识别相同的压力区域。相反，WorldView-2图像的新红边频段允许NDVI和地下水盐度之间的相关性更大。

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