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Effects of artificial water treatment on the growth and leaf characteristics of Fraxinus rhynchophylla and Fraxinus mandshurica  

Chung, Jin-Chul (Division of Bio-Environment Science, Wonkwang University)
Choi, Jeong-Ho (Forest Practice Research Center, Korea Forest Research Institute)
Park, Kyong-Woo (Division of Bio-Environment Science, Wonkwang University)
Yoo, Se-Kuel (Forest Practice Research Center, Korea Forest Research Institute)
Lee, Soo-Won (Forest Practice Research Center, Korea Forest Research Institute)
Bae, Jong-Hyang (Division of Horticulture and Pet Animal-Plant Science, Wonkwang University)
Publication Information
Journal of Bio-Environment Control / v.16, no.2, 2007 , pp. 135-141 More about this Journal
Abstract
Although the result of the tree height growth after water treatment, Fraxinus rhynchophylla has little affection by the artificial water treatment, the growth showed decreased tendency as the soil moisture decreased, and F. mandshurica showed high growth in relatively high soil moist $78{\sim}90%$ treated area. The growth of root collar diameter of F. rhynchophylla and F. mandshurica also showed decreased tendency as soil moisture decreased. The changes of biomass according to dry weight of root, stem, leaves of F. rhynchophylla demonstrating statistical significance as moisture contents of soil is lower showing decreased biomass tendency and in the treatment of $78{\sim}90%$(A) moisture content showed more than double the higher biomass compare to the treated area of $18{\sim}30%$(D) moisture contents. Also F. mandshurica showed statistical significance in A and D treatment demonstrating differences among each treatment. This can be purported to have physiological effects like weakening of seedling and softening of tissues including leaves as soil moisture decreased. Ultimately it is regarded to the main reason of unsatisfactory growth for F. rhynchophylla and F. mandshurica that are weak to drought resistance. SLA, which is one of the special traits of leaf area of F. rhynchophylla, didn't show statistical significance between moisture process, it demonstrated decreased tendency as the moisture content interval is minimal. LAR and LWR showed increased tendency while moisture content didn't show statistical significance between treatments as they are minimal.
Keywords
dry weight; Fraxinus mandshurica; Fraxinus rhynchophylla; growth; leaf characteristics; water treatment;
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