南京林业大学学报(自然科学版) ›› 1999, Vol. 23 ›› Issue (03): 66-69.doi: 10.3969/j.jssn.1000-2006.1999.03.018

• 研究论文 • 上一篇    下一篇

皖东石灰岩山地榆科树种的生理特性

傅松玲;郑兴林   

  1. 安徽农业大学;安徽管店林业总场
  • 出版日期:1999-06-18 发布日期:1999-06-18

A Study on Physiological Characters of Species of Ulmaceae on Limestone Mountains in the Eastern of Anhui Province

Author Fu Songling (Anhui Agricultural UniversityHefei230036) Zheng Xinglin   

  1. Guandian Forestry Farm of Anhui Province
  • Online:1999-06-18 Published:1999-06-18

摘要: <正>以琅琊山天然次生林中琅琊榆、醉翁榆、青檀、榉树、扑树等树种为试验材料,研究皖东石灰岩山地榆科树种生理生态特性,结果表明榆科树种抗旱、耐瘠、喜钙,是石灰岩山地适宜造林树种。具体表现在:(1)榆科树种光补偿点高,5种榆科树种光补偿点分别为6.35,4.45,5.03,3.32,5.53W/m2;(2)水分利用效率高,分别为3.16×10-2,2.92×10-2,2.65×10-2,2.48×10-2,2.98×10-2g/g(DM/H2O);(3)水势值偏低,5月份中午叶片水势为-8.4,-7.2,-9.1,-8.0,-9.0Pa。

Abstract: This paper studied physiological and ecological characters of Ulmus chenmoui, U. gaussenii, Pteroceltis tatarinowii, Zelkova schneiderina and Celtis sinensis. Light compensations of them are 6.35,4.45,5.03,3,32 and 5.53W/m2 respectively. The water utilization efficiencies are 3.1610-2,2.9210-2,2.6510-2,2.4810-2 and 2.9810-2g/g(DW/H2O) and the water potentials at noon of May are -8.4,-7.2,-9.1,-8.0 dan -9.0 bar respectively. With high light compensation and water utilization efficiencies and low water potentials, they are adaptable to limestone babitat.