Species-specific growth patterns of trees neighboring dead oak trees caused by Japanese oak wilt disease
Species-specific growth patterns of trees neighboring dead oak trees caused by Japanese oak wilt disease
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日本橡树枯萎病引起的死橡树附近树木的物种特异性生长模式
DOI：
10.1080/13416979.2017.1337554
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发表时间：
2017
影响因子：
1.5
通讯作者：
H.
中科院分区：
文献类型：
--
作者：
Hata;K.;Iwai;N.;Sato;T.;Sawada;H.
要测试是否死亡率造成的影响，日本栎枯萎病对周围树木的生长模式取决于大小，密度和邻近的死树，以及是否依赖不同的物种，我们研究了死亡率的影响，在占主导地位的橡树种，栎锯缘，造成日本栎枯萎病对周围树木的生长速度在日本温带森林。使用的数据上的直径在胸高和空间位置的树木采样在1公顷的情节，我们评估了11个优势种的绝对生长率和竞争指数（CI）之间的关系，相邻的树和deadQ。锯齿树根据deadQ的大小和密度计算病灶树的CI。在焦点树的特定半径（2.5-30米，2.5米间隔）内的锯齿树。在11种植物中，有8种耐荫植物对CI有显著的正相关。我们的研究结果表明，死亡率的橡树增加了一些耐荫物种的生长速度，这取决于大小和接近的死树，和耐荫物种之间的增加的时间不同。
To test whether the effects of mortality caused by Japanese oak wilt disease on the growth patterns of surrounding trees depend on the sizes, densities, and proximities of the dead trees and whether the dependency differs among species, we examined the effects of mortality in the dominant oak species,Quercus serrata, caused by Japanese oak wilt disease on the growth rates of surrounding trees in a temperate forest in Japan. Using data on the diameters at breast height and spatial locations of trees sampled in a 1-ha plot, we evaluated the relationships between the absolute growth rate of 11 dominant species and the competition index (CI) between the neighboring tree and the deadQ. serratatree. The CI of a focal tree was calculated from the sizes and densities of deadQ. serratatrees within a particular radius (2.5–30 m, 2.5-m intervals) of the focal tree. Of the 11 species, eight shade-tolerant species had significant positive coefficients for CI. Our results indicate that the mortality of the oak trees increased the growth rates of some shade-tolerant species, depending on the sizes and proximities of the dead trees, and that timing of the increases differed among shade-tolerant species.