Exotic species plantations are increasing for timber production and other economic benefits. However, evaluation of species adaptation to local climates requires long-term research and the information is still limited. This study was conducted to understand the growth response of three exotic tree species, Abies firma, Cryptomeria japonica, and Chamaecyparis obtusa, to regional moisture conditions during the dry spring and wet summer in plantations located in south-central Korea. We examined the growth response of A. firma, C. japonica, and C. obtusa to monthly precipitation and drought indices from 1950 to 1998 using tree-ring analysis. The radial growth of A. firma showed a significantly positive relationship with precipitation and drought indices in spring (p < 0.05). Water stress in spring was the main limitation to radial growth in A. firma. In contrast, C. japonica and C. obtusa, with indeterminate growth, had negative correlations with precipitation and drought indices in summer (p < 0.05). Abnormally high summer precipitation may interrupt photosynthesis by reducing sunshine duration and evaporation, negatively affecting the growth of C. japonica and C. obtusa. The different responses of these species to monthly precipitation and drought indices imply that regional precipitation patterns should be carefully considered in species selection for the establishment of exotic species plantations.

为了木材生产和其他经济利益，外来物种种植正在增加。但是，对物种适应当地气候的评估需要长期研究，而且信息仍然有限。进行这项研究的目的是了解朝鲜中南部种植园在干旱的春季和夏季，三种外来树种Abies firma，Cryptomeria japonica和Chamaecyparis obtusa对区域水分条件的生长响应。我们使用树木年轮分析法研究了从1950年至1998年的A. firma，C。japonica和C. obtusa对月降水和干旱指数的增长响应。坚挺果的径向生长与春季降水和干旱指数呈显着正相关（p <0.05）。春季水分胁迫是硬核A虫径向生长的主要限制。相比之下，生长不定的日本粳稻和钝角梭菌与夏季降水和干旱指数呈负相关（p <0.05）。夏季异常高的降水量可能会通过减少日照持续时间和蒸发来中断光合作用，从而对日本锦葵和钝角锦葵的生长产生负面影响。。这些物种对月降水量和干旱指数的不同反应意味着，在建立外来物种种植园的物种选择中应仔细考虑区域降水模式。