植物生态学报 ›› 2003, Vol. 27 ›› Issue (6): 829-835.DOI: 10.17521/cjpe.2003.0119

• 论文 • 上一篇    下一篇

人为干扰对浑善达克沙地榆树疏林的影响

李永庚, 蒋高明, 高雷明, 牛书丽, 刘美珍, 于顺利, 彭羽   

  • 发布日期:2003-06-10
  • 通讯作者: 李永庚

Impacts of Human Disturbance on Elms-motte-veldt in Hunshandak Sandland

LI Yong-Geng, JIANG Gao-Ming, GAO Lei-Ming, NIU Shu-Li, LIU Mei-Zhen, YU Shun-Li, PENG Yu   

  • Published:2003-06-10
  • Contact: LI Yong-Geng

摘要:

榆树(Ulmus pumila)疏林灌丛草原是浑善达克沙地植被演替的顶极群落。但近年来,榆树数量减少、树龄老化严重。2001~2002年,在浑善达克沙地榆树疏林集中分布地区,选取了轻度(LD)、中度(MD)和过度(HD)3个不同干扰强度的地点进行实地调查。分析了浑善达克沙地榆树数量

Abstract:

There are many elm (Ulmus pumila) distributed on the fixed sand dune in Hunshandak Sandland. Elms-motte-veldt is the climax community of vegetation succession in this region. Recently, the quantity of elms decreased sharply, especially for the young elms