绿洲; 人工梭梭; 群落结构; 种群特征; 民勤," /> 绿洲; 人工梭梭; 群落结构; 种群特征; 民勤,"/> Oasis,planted Haloxylon ammodendron forest,community structure,population features,Minqin,"/> 民勤绿洲人工梭梭林群落结构及种群生态特征

干旱区研究 ›› 2014, Vol. 31 ›› Issue (1): 94-99.

• 生物环境 • 上一篇    下一篇

民勤绿洲人工梭梭林群落结构及种群生态特征

刘有军,刘世增,纪永福,张锦春,陈芳,王芳琳   

  1. 甘肃省风沙灾害与荒漠化防治省部共建国家重点实验室培育基地,甘肃省治沙研究所,甘肃兰州 730070
  • 出版日期:2014-01-15 发布日期:2014-02-28
  • 通讯作者: 刘世增.E-mail:shzliu@126.com

Community Structure and Population Ecological Features of Planted Haloxylon ammodendron in Different Habitats in Minqin Oasis

LIU You-jun , LIU Shi-zeng , JI Yong-fu , ZHANG Jing-chun , CHEN Fang , WANG Fang-lin   

  1. Cultivating Base, State Key Laboratory of Aeolian Disaster and desertification Control, Gansu Province Institute
     of Desertification Control Research, Lanzhou 730070, China
  • Online:2014-01-15 Published:2014-02-28

摘要: 采用野外样方调查方法,分别对生长于民勤绿洲盆地不同立地类型的人工梭梭群落内的物种重要值、多样性等生态特征进行分析,将其划分为3个类型:梭梭—一年生植物群聚、梭梭—一年生植物—灌木群聚和梭梭—灌木群落;分别分布于流动沙丘、半固定沙丘和固定沙地上,随着沙地固定程度的增加,人工梭梭群落由梭梭—一年生植物群聚(先锋群落,盖度23%、多样性指数0.26)演替到梭梭—一年生植物—灌木群聚(盖度30%、多样性指数0.34)再演替到梭梭—灌木群落(盖度40%,多样性指数0.60);在人工梭梭群落演替过程中,人工梭梭种群在不同沙地类型上生长状况不同,沿着流动沙地→半固定沙地→固定沙地为衰退型,这种衰退与土壤水分的含量有关。

关键词: font-size: 10.5pt, mso-bidi-font-family: 宋体, mso-font-kerning: 1.0pt, mso-ansi-language: EN-US, mso-fareast-language: ZH-CN, 绿洲; 人工梭梭; 群落结构; 种群特征; 民勤')">mso-bidi-language: AR-SA">绿洲; 人工梭梭; 群落结构; 种群特征; 民勤

Abstract: The important values and the ShannonWiener indexes were analyzed based on carrying out a field investigation on sample plots of planted   [WTBX]Haloxylon ammodendron[WTBZ] communities in different sandy habitats in Minqin Oasis.The planted [WTBX]H.ammodendron[WTBZ] communities were classified into three types,i.e.,the [WTBX]H.ammodendron[WTBZ] (annual herbage) community,[WTBX]H.ammodendron[WTBZ] (annual herbage with shrubs) community and [WTBX]H.ammodendron[WTBZ]shrub community,and these communities were distributed on mobile sand dune,semifixed sand dune and fixed sand dune respectively.With the increase of sandfixed degree,the community succession was ranked from [WTBX]H.ammodendron[WTBZ] community (annual herbage,pioneer community with a coverage of 23% and ShannonWiener index of 0.26) to [WTBX]H.ammodendron[WTBZ] (annual herbage with shrubs with a coverage of 30% and ShannonWiener index of 0.34),and then to [WTBX]H.ammodendron[WTBZ]shrub community (with a coverage of 40% and ShannonWiener index of 0.60).In the succession,the growth of planted [WTBX]H.ammodendron[WTBZ] populations in different habitats was different,a recession of planted [WTBX]H.ammodendron[WTBZ] populations occurred from mobile sand dune to semifixed sand dune and then to fixed sand dune,and such recession was related to soil moisture content.

Key words: font-size: 10.5pt, mso-bidi-font-family: 宋体, mso-font-kerning: 1.0pt, mso-ansi-language: EN-US, mso-fareast-language: ZH-CN, Oasis')">mso-bidi-language: AR-SA" lang="EN-US">Oasis, planted font-size: 10.5pt, mso-bidi-font-family: MingLiU_HKSCS, mso-font-kerning: 1.0pt, mso-ansi-language: EN-US, mso-fareast-language: ZH-CN, mso-bidi-language: AR-SA, mso-hansi-font-family: MingLiU_HKSCS, mso-ascii-font-family: MingLiU_HKSCS">font-size: 10.5pt, mso-bidi-font-family: 宋体, mso-font-kerning: 1.0pt, mso-ansi-language: EN-US, mso-fareast-language: ZH-CN, Haloxylon ammodendronmso-bidi-language: AR-SA" lang="EN-US">Haloxylon ammodendronfont-size: 10.5pt, mso-bidi-font-family: MingLiU_HKSCS, mso-font-kerning: 1.0pt, mso-ansi-language: EN-US, mso-fareast-language: ZH-CN, mso-bidi-language: AR-SA, mso-hansi-font-family: MingLiU_HKSCS, mso-ascii-font-family: MingLiU_HKSCS">font-size: 10.5pt, mso-bidi-font-family: 宋体, mso-font-kerning: 1.0pt, mso-ansi-language: EN-US, mso-fareast-language: ZH-CN, forest')">mso-bidi-language: AR-SA" lang="EN-US"> forest, community structure, population features, Minqin