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Preliminary Study on the Adaptability of Tolerate-Drought for Different Species Group in Karst Forest
Author(s): 
Pages: 19-22
Year: Issue:  1
Journal: JOURNAL OF NANJING FORESTRY UNIVERSITY(NATURAL SCIENCE EDITION)

Keyword:  喀斯特森林种组耐旱适应性贵州;
Abstract: 把土壤-植物-大气视为一个连续体,通过研究喀斯特森林树种不同适应等级种组的吸水潜能、耗水能力和水分利用效率,初步评价各种组的耐旱适应性.结果表明,水分平衡方式因种组而异,先锋种为高输入低输出高效率类型,次先锋种为中输入中输出较高效率类型,过渡种为较低输入中输出较低效率类型,次顶极种和顶极种为中输入、中输出中效率类型.先锋种、次先锋种耐旱适应性强于次顶极种和顶极种.同一种组内落叶阔叶树种耐旱适应性弱于常绿阔叶树种,证实了"喀斯特森林中落叶成分是对干旱的适应"的论断.
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