气候变暖下中国中北部两种优势树种径向生长模式的变化

IF 2.7 3区 农林科学 Q1 FORESTRY
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引用次数: 0

摘要

北半球中高纬度地区高山针叶树的径向生长模式对气候变暖的反应不稳定,也不一致。在气候变化的背景下,了解树木过去和未来的生长趋势对于森林培育至关重要。因此,我们采用传统的树木气候学方法,分析了冠豸山两种优势树种的径向生长模式及其对气候变化响应的稳定性,并得出以下结论:(1)Larix principis-rupprechtii 的径向生长比 Picea meyeri 对气候因子更敏感;(2)在气温骤变前后,控制两种优势树种径向生长的主要气候因子分别是春季降水量和平均气温;(3)在气温骤变前,L. principis-rupprechtii 的径向生长受秋季平均气温的影响,而 P. principis-rupprechtii 的径向生长受秋季平均气温的限制。meyeri的径向生长受春季标准化降水蒸散指数的限制;气温骤变后,L. principis-rupprechtii和P. meyeri的主要气候控制因子分别为冬季干旱和夏季水热同期;以及(4)气温骤变后,两种植物的年际基部面积增量呈上升趋势,但径向生长速率在去趋势化后均有所下降,两种植物的生长发育均受到干旱的严重胁迫。在气候变暖的背景下,探讨同一生境下不同树种的应对情况,为今后因地制宜培育森林提供理论和机制支撑,从根本上为 "绿化 "问题提供建议。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Changes in the radial growth patterns of two dominant tree species in north-central China under climate warming
The radial growth pattern of alpine coniferous trees in the mid-high latitudes of the Northern Hemisphere has an unstable and inconsistent response to climate warming. Understanding the growth trends of trees in the past and future is crucial for forest cultivation against the background of climate change. Thus, we used traditional dendroclimatological methods to analyze the radial growth patterns and stability in response to climate change of the two dominant species on Guancen Mountain and concluded that: (1) the radial growth of Larix principis-rupprechtii was more sensitive than that of Picea meyeri to climatic factors; (2) before and after the abrupt temperature change, the major controlling climatic factors for the radial growth of the two dominant species were spring precipitation and mean temperature, respectively; (3) before the abrupt temperature change, the radial growth of L. principis-rupprechtii was affected by the mean temperature in autumn, while that of P. meyeri was restricted by the standardized precipitation evapotranspiration index in spring; after the abrupt temperature change, the major controlling climate factors of L. principis-rupprechtii and P. meyeri were winter drought and the combination of water and heat in summer, respectively; and (4) after the abrupt temperature change, the interannual basal area increments of the two species followed an upward trend, however, the radial growth rate of both species decreased after detrending, and the growth and development of both species were seriously stressed by drought. Under the background of climate warming, to explore the coping situation of different tree species in the same habitat, to provide theoretical and mechanism support for the future cultivation of forests according to local conditions, and to provide suggestions for the "greening" problem fundamentally.
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来源期刊
Dendrochronologia
Dendrochronologia FORESTRY-GEOGRAPHY, PHYSICAL
CiteScore
5.50
自引率
13.30%
发文量
82
审稿时长
22.8 weeks
期刊介绍: Dendrochronologia is a peer-reviewed international scholarly journal that presents high-quality research related to growth rings of woody plants, i.e., trees and shrubs, and the application of tree-ring studies. The areas covered by the journal include, but are not limited to: Archaeology Botany Climatology Ecology Forestry Geology Hydrology Original research articles, reviews, communications, technical notes and personal notes are considered for publication.
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