Effects of Water Deficit on Growth of Two Tree Species Seedlings in Changbai Mountains of Northeast China
Xuemei Yi1,2, Yue Zhang1, Xiaowei Wang1, Yuanxia Wang1,2, Yan Liu1, Lanzhu Ji1
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1State Key Laboratory of Forest and Soil Ecology, Institute of Applied Ecology,
Chinese Academy of Sciences, Shenyang 110164, PR China
2University of Chinese Academy of Sciences, Beijing 100049, PR China
Publish date: 2015-04-02
Submission date: 2014-08-12
Final revision date: 2014-09-22
Acceptance date: 2014-09-23
Pol. J. Environ. Stud. 2015;24(2):787–791
To understand how temperate coexisting tree species respond to water deficit, the seedlings of two coexisting species, Phellodendron amurense Rupr. And Fraxinus mandshurica Rupr., were transplanted into plastic flowerpots. Three water deficit treatments were used, W1 (60-90% field moisture capacity), W2 (40-60% field moisture capacity), and naturally occurring precipitation (CK), with the aim of investigating the effects of water deficit on the growth of seedlings and competition between them. The result showed that the relative height and diameter of the P. amurense seedlings decreased in the control groups (CP, single P. amurense seedling; CF, single F. mandshurica seedling) but increased in the mixed groups (one P. amurense seedling and one F. mandshurica seedling together) with the water deficit. The water deficit affected the plants by altering the growth of the seedlings and competition between the two species. It was shown that there were greater negative effects on P. amurense due to the manufactured water deficit than on F. mandshurica.