A comparison of the climate response of longleaf pine (Pinus palustris Mill.) trees among standardized measures of earlywood, latewood, adjusted latewood, and totalwood radial growth
A comparison of the climate response of longleaf pine (Pinus palustris Mill.) trees among standardized measures of earlywood, latewood, adjusted latewood, and totalwood radial growth
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DOI：
10.1007/s00468-021-02093-z
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发表时间：
2021-02
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影响因子：
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通讯作者：
P. T. Soulé;P. Knapp;Justin T. Maxwell;T. Mitchell
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文献类型：
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作者：
P. T. Soulé;P. Knapp;Justin T. Maxwell;T. Mitchell
KeymessageLongleaf松树径向生长主要是由夏末水分供应，晚材和调整晚材对气候比早材或totalwood更敏感，并有一个高水平的协议在空间上的增长/气候responses.AbstractOur的目标是广泛地研究气候增长响应的长叶松（PinuspalustrisMill。）在北卡罗来纳州和南卡罗来纳州的沿海平原省，气温、降水和干旱的严重程度。我们比较了标准化早材，晚材，调整后的晚材，和总木材径向树生长之间的反应。我们采样成熟的长叶松生长在开放的树冠稀树草原环境和开发六个年轮年表使用标准的树木生态学技术。我们使用了皮尔逊相关性，移动间隔相关性，和Fisherr-z检验的组合，以确定哪些月度和季节变量是最密切相关的径向生长，时间稳定性的主导增长/气候关系，以及早材和晚材的增长是否提供显着不同的气候响应。我们的研究结果表明，与气候的最强关系是调整后的晚材生长和生长季节后期的降雨（即，7月至9月）是径向生长的主要控制。在空间上，我们发现，生长/气候响应是相似的，在整个沿海平原地区，包括六个研究地点。从时间上看，我们发现7月至9月的降水量与径向生长在延长的年度间隔内产生显著（p< 0.05）关系，但在较短的时期内这种关系不显著。在一般情况下，生长/气候的关系更强的晚材相比，早材，这些反应显着（p< 0.05）不同，在我们的研究地点的一半左右。我们的研究结果是一致的，在这一地区的研究表明，短持续时间的降水事件是径向增长的一个关键组成部分。此外，这些结果强调了晚材生长的重要性，特别是调整晚材生长，在捕捉年际气候/生长反应。
Key messageLongleaf pine radial growth is primarily driven by late summer moisture availability, latewood and adjusted latewood are more sensitive to climate than either earlywood or totalwood, and there is a high level of agreement spatially in growth/climate responses.AbstractOur objective was to examine broadly the climate–growth responses of longleaf pine (Pinus palustrisMill.) on the Coastal Plain province of North and South Carolina to temperature, precipitation, and drought severity. We compared the responses between standardized earlywood, latewood, adjusted latewood, and totalwood radial tree growth. We sampled mature longleaf pine growing in open-canopy savanna environments and developed six tree-ring chronologies using standard dendroecological techniques. We used a combination of Pearson correlation, moving interval correlation, and Fisherr–ztests to determine which monthly and seasonal variables were most closely related to radial growth, the temporal stability of the dominant growth/climate relationship, and whether earlywood and latewood growth provide significantly different climate responses. Our results show that the strongest relationships with climate are with adjusted latewood growth and that rainfall in the later parts of the growing season (i.e., July–September) is the primary control of radial growth. Spatially, we found that growth/climate responses were similar throughout the Coastal Plain region encompassing the six study sites. Temporally, we found that July–September precipitation produced significant (p< 0.05) relationships with radial growth for extended annual intervals, but there were shorter periods when this relationship was non-significant. In general, growth/climate relationships were stronger for latewood compared to earlywood, and these responses were significantly (p< 0.05) different at about half of our study sites. Our findings are congruent with prior research in this region showing that short-duration precipitation events are a critical component for radial growth. Further, these results emphasize the importance of latewood growth—particularly adjusted latewood growth—in capturing interannual climate/growth responses.