Importance of the legacy effect for assessing spatiotemporal correspondence between interannual tree-ring width and remote sensing products in the Sierra Nevada
Importance of the legacy effect for assessing spatiotemporal correspondence between interannual tree-ring width and remote sensing products in the Sierra Nevada
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遗留效应对于评估内华达山脉年际树木年轮宽度与遥感产品之间的时空对应关系的重要性
DOI：
10.1016/j.rse.2021.112635
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发表时间：
2021
影响因子：
13.5
通讯作者：
Magney, Troy S.
中科院分区：
文献类型：
--
作者：
Wong, Christopher Y.S.;Young, Derek J.N.;Latimer, Andrew M.;Buckley, Thomas N.;Magney, Troy S.
碳吸收和树木生长是评估生产力和长期碳储存的重要因素。径向树干生长的测量主要是在单木尺度上进行的，可用于推断生态系统净初级生产力(NPP)。然而，这些测量在空间上是有限的，遥感提供了一种在空间尺度上跟踪植被功能和生产力的有前景的工具，使其成为评估树木年际生长和碳储量变化的可行技术。在这项研究中，我们研究了内华达山脉四种主要常绿树种的现场年轮宽度与一系列与碳吸收有关的遥感产品之间的对应关系，这些产品包括NPP、总初级生产力(GPP)、净光合作用(PSN)、归一化差异植被指数(NDVI)、植被指数的近红外反射率(NIRV)、来自MODIS(中分辨率成像光谱仪)的叶绿素/类胡萝卜素指数(CCI)以及缩小尺度的太阳诱导荧光(SIF)产品。结果表明，利用MODIS GPP的年总和可以较好地捕捉年轮宽度的变化，并具有一定的后继效应(5个月后移)。在所有林地中，具有5个月遗传效应的MODIS GPP与树轮宽度表现出中等的对应关系(r=0.60)。然而，在每个单独的站点内，具有遗传效应的MODIS GPP与树木生长之间的年际对应关系更强(中位数r=0.70比没有遗传效应的0.14)。遗传效应在解释立地内树木生长变化方面的重要性表明，每年的树木生长都受到前一个生长季后期的碳吸收的影响。其他当地环境因素也解释了树木年轮宽度的变化，包括(按重要性降序)当地树木密度、纬度、坡度、胸径、海拔和坡向。
Carbon uptake and tree growth are important factors for assessing productivity and long-term carbon storage. Measurements of radial stem growth are mainly performed at the individual tree scale and can be used to infer ecosystem net primary productivity (NPP). However, these measurements are spatially limited, and remote sensing provides a promising tool to track vegetation function and productivity across spatial scales, making it a viable technique for assessing variation in interannual tree growth and carbon storage. In this study we examined the correspondence between in-situ annual tree-ring width across four dominant evergreen species in the Sierra Nevada and a wide range of remotely sensed products linked to carbon uptake including NPP, gross primary productivity (GPP), net photosynthesis (PSN), normalized difference vegetation index (NDVI), near infrared reflectance of vegetation index (NIRV), and chlorophyll/carotenoid index (CCI) from MODIS (Moderate resolution Imaging Spectroradiometer) as well as downscaled solar-induced fluorescence (SIF) products, using a 14 year dataset (2000–2014) across 62 forest sites. We show that variation of annual tree-ring width was best captured by the annual sum of MODIS GPP, with a legacy effect (5-month backwards shift). Across all forest sites, MODIS GPP with a 5-month legacy effect showed moderate correspondence with tree-ring width (r= 0.60). Within each individual site, however, the interannual correspondence between MODIS GPP with a legacy effect and tree growth was stronger (medianr= 0.70 vs 0.14 without a legacy effect). The importance of legacy effects in explaining tree growth variation within sites indicates that tree growth each year is influenced by carbon uptake during the latter part of the previous growing season. Additional local environmental factors also explained annual variation in tree-ring width, including (in descending order of importance) local tree density, latitude, slope, DBH, elevation and aspect.
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影响因子：
2
作者：
R. Kaufmann;R. D’Arrigo;L. F. Paletta;H. Tian;W. Jolly;R. Myneni
通讯作者：
R. Kaufmann;R. D’Arrigo;L. F. Paletta;H. Tian;W. Jolly;R. Myneni
影响因子：
2.2
作者：
Dolanc, Christopher R.;Westfall, Robert D.;Schwartz, Mark W.
通讯作者：
Schwartz, Mark W.
松树和云杉的年轮产生的净二氧化碳吸收量和总二氧化碳吸收量与生长之间的时间变化
DOI：
--
发表时间：
2019
期刊：
Trees
影响因子：
--
作者：
F. Lagergren;A. Jönsson;Hans Linderson;A. Lindroth
通讯作者：
A. Lindroth
影响因子：
11.6
作者：
Eitel, Jan U. H.;Griffin, Kevin L.;Jennewein, Jyoti S.
通讯作者：
Jennewein, Jyoti S.
地中海气候影响。
DOI：
--
发表时间：
2001
期刊：
American-Eurasian journal of botany
影响因子：
--
作者：
E. Royce;M. Barbour
通讯作者：
M. Barbour