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林业科学 ›› 2002, Vol. 38 ›› Issue (5): 156-159.doi: 10.11707/j.1001-7488.20020526

• 研究简报 • 上一篇    下一篇

毛乌素沙地臭柏不定根发生特性的研究

王林和1 张国盛3 隋明杰4 刘美珍2   

  1. 内蒙古农业大学生态环境学院,呼和浩特010018;中国科学院植物研究所植被数量生态学开放研究实验室,北京100093
  • 收稿日期:2001-04-23 修回日期:1900-01-01 出版日期:2002-09-25 发布日期:2002-09-25

STUDY ON SPROUTING OF ADVENTITIOUS ROOTS OF SABINA VULGARIS IN MU US SANDY LAND

Wang Linghe,Zhang Guosheng,Sui Mingjie,Liu Meizhen   

  1. Ecological Environment College, Inner Mongolia Agriculture University Hohhot010018;Quantitative Ecology Laboratory of Botany Institute, Chinese Academy of Science Beijing100093
  • Received:2001-04-23 Revised:1900-01-01 Online:2002-09-25 Published:2002-09-25

关键词: 臭柏, 不定根, 土壤含水率, 毛乌素沙地

Abstract:

Sabina vulgaris is a unique evergreen conifer shrub and expands its area by the growth of stolon along the ground surface on which adventitious roots are formed and absorb water and nutrient. Therer is notable difference between the thickness of sand layer and sprouting of adventitious roots, especially between the great thickness sand layer and the other three types. Minor thickness of sand layer is enough to better off the soil water content in the soil layer (0~10 cm),while the soil moisture content decreased on the condition of great number sprouted adventitious roots, as a result, it is difficult for the adventitious roots to sprout. When the soil moisture content is below 1.0%, it is a question for adventitious roots to sprout. The adventitious roots was able to sprout on the 2-year-old stolon on the condition in which the sand is easily accumulated, even on the 9-year-old stolon on the medium and great thickness of sand layer. This indicates that the age is not the key factor for restricting the adventitious roots to sprout.

Key words: Sabina vulgaris, Adventitious roots, Soil moisture content, Mu Us sandland