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中国沙漠 ›› 1997, Vol. 17 ›› Issue (1): 53-57.

• 研究论文 • 上一篇    下一篇

甘肃胡杨恢复发展的限制因子及对策

康向阳   

  1. 甘肃农业大学林学院, 兰州 730070
  • 收稿日期:1996-01-25 修回日期:1996-02-13 出版日期:1996-03-20 发布日期:1996-03-20
  • 作者简介:康向阳,男,1963年生,讲师。主要从事林木遗传育种的教学与科研工作,现在北京林业大学攻读林木遗传育种博士学位。

THE RESTRICTIVE FACTORS AND THE DEVELOPMENT STRATEGIES OF FOREST RESTORATION OFPOPULUS EUPHRATICA OLIV.IN GANSU

Kang Xiangyang   

  1. College of Forestry, Gansu Agricultural University, Lanzhou 730070
  • Received:1996-01-25 Revised:1996-02-13 Online:1996-03-20 Published:1996-03-20

摘要: 甘肃胡杨正处于负向演替的衰退状态,在现存的14590 hm2胡杨林中,衰退林和成熟林就占了73.0%,且大多为胡杨疏林;而树龄小于15年的幼龄林仅占了5.0%,1~5年生天然更新苗十分罕见。影响、限制甘肃胡杨天然林恢复发展的主要因子是林地水土环境的恶化;而胡杨无性繁殖困难、实生苗在生长形态方面表现参差不齐等因素,又限制了胡杨的人工发展。只有在突破胡杨无性繁殖难关的基础上,通过良种繁育调动群众营建人工胡杨林的积极性,才是恢复发展胡杨林的根本出路。

关键词: 胡杨, 负向演替, 良种选育, 无性繁殖, 人工林

Abstract: Populus euphratica Oliv.is in its declining stage of negative succession in Gansu Province.There are 73 0% declining and mature forest which grow sparsely,5% young forest less than 15 years and rare seedings between 1 and 5 years in the 14 590 hm2 populus forest.The main restrictive factors of development lie in both the deterioration of water-soil environment and the disadvantages in artificial forest resulted from the difficult propagation and not uniform seedlings of Populus euphratica Oliv.The development strategies of P.euphratica.had been suggested that only with the combination of successive vegetative propagation and breeding desirable varieties,afforestation with improved varieties in a large scale could be practical.

Key words: Pouplus euphratica Oliv., Negative succession, Vegetative propagation, Breed selection, Artificial forest