利用高光谱调查数据计算的植被指数评估枫叶中光合色素的季节动态

АгроЭкоИнфо Pub Date : 2024-03-27 DOI:10.51419/202142206.

M. Ignatova, B. Kozlovsky, Anastasia Dmitrieva, Tatyana Varduny, Pavel Dmitriev

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引用次数: 0

摘要

文章介绍了枫叶中光合色素含量季节变化的研究结果。结果获得了三个生长季节（2021-23 年）的色素浓度时间序列和 80 个植被指数（VI）值。结果发现，一大批植被指数（CARI、Carter4、Datt3、DD、Maccioni、MTCI、mSR2、NDVI2、OSAVI2、REP_Li、SR6、TCARI_OSAVI、Vogelmann2、Vogelmann 等--总共超过 25 种植被指数）的时间序列具有明确的季节动态，与叶绿素浓度的季节动态一致。测试结果表明，以 CORE/OS AVI 为自变量的模型最接近叶绿素总和值。NDVI 指数作为叶绿素浓度的替代指标被证明是无效的。安第斯山脉的叶绿素含量和叶绿素值的季节动态具有物种特异性。关键词桤木叶绿素类胡萝卜素植被指数时间序列季节动态

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Assessment of the seasonal dynamics of photosynthetic pigments in maple leaves using vegetation indices calculated from hyperspectral survey data

The article presents the results of studies on seasonal changes in the content of photosynthetic pigments in maple leaves. As a result, time series of pigment concentrations and values of 80 vegetation indices (VI) were obtained for three growing seasons (2021-23). It was found that the time series of a large group of VI (CARI, Carter4, Datt3, DD, Maccioni, MTCI, mSR2, NDVI2, OSAVI2, REP_Li, SR6, TCARI_OSAVI, Vogelmann2, Vogelmann et al. - in total, more than 25 VI) have a well-defined seasonal dynamics, coherent with the seasonal dynamics of chlorophyll concentrations. According to the test results, the models with CORE/OS AVI as an independent variable are the best for approximating the values of the chlorophyll sum. The NDVI index proved to be ineffective as a proxy metric for chlorophyll concentration. The seasonal dynamics of chlorophyll content and values in And is species-specific. Keywords: ACER, CHLOROPHYLL, CAROTENOIDS, TIME SERIES OF VEGETATION INDICES, SEASONAL DYNAMICS

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