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植物研究 ›› 1999, Vol. 19 ›› Issue (3): 341-346.

• 论文 • 上一篇    下一篇

黄土区树种抗旱性指数的研究

王孟本, 李洪建, 柴宝峰, 武冬梅   

  1. 山西大学黄土高原研究所, 太原 030006
  • 收稿日期:1997-03-10 出版日期:1999-09-15 发布日期:2016-06-14
  • 基金资助:
    山西省自然科学基金项目(961019)和山西省留学回国人员基金项目(9395和9698)内容之一。

DROUGHT RESISTANCE INDEX OF 6 TREE SPECIES IN THE LOESS REGION

Wang Meng-ben, Li Hong-jian, Chai Bao-feng, Wu Dong-mei   

  1. Institute of Loess Plateau, Shanxi University, Taiyuan 030006
  • Received:1997-03-10 Online:1999-09-15 Published:2016-06-14

摘要: 根据PV曲线主要水分参数测定数据,进行了黄土区6个乔、灌木树种抗旱性季节变化趋势和树种间抗旱性指数排序分析。结果表明,树种抗旱性指数在生长季(5~10月)呈具有阶段降低的持续增大趋势,仅在雨季中后期(即树木年第2生长高峰期)略有减小。在年生长季土壤严重干旱阶段,树种的抗旱性指数大小排序为:海红> 河北杨> 柠条> 小叶杨> 北京杨> 刺槐。

关键词: 树种, PV技术, 水分参数, 抗旱性指数

Abstract: The seasonal and interspecific changes of drought resistance were studied in 6 species of trees in the Loess Plateau based on the data of main water parameters measured by using pressure-volume technique. The result showed that the drought resistance index (DI) value of the tested species was in a steady increase during the annual growing season except in the middle of annual rainy period, i. e. the second peak period of tree growth. During the period of serious water stress of soil profile, the DI values of 6 species had following order from big to small:Malus micromalus, Populus hopeiensis, Caragana korshinskii, Populus simonii, Populus beijingensis, Robinia pseudoacacia.

Key words: Tree species, Pressure-volume analysis, Water parameters, Drought resistance index