[1]薛智德,朱清科,梁宗锁,等.延安研究区退耕地植物群落动态变化特征[J].西北林学院学报,2007,22(03):16-20.
 XUE Zhide,ZHU Qingke,LIANG Zongsuo,et al.Dynamic Changes of Plant Community on Rehabilitated Land in Early Succession Stage in Yan'an Area[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2007,22(03):16-20.
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延安研究区退耕地植物群落动态变化特征()
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《西北林学院学报》[ISSN:1001-7461/CN:61-1202/S]

卷:
第22卷
期数:
2007年03期
页码:
16-20
栏目:
森林生物学
出版日期:
2007-06-30

文章信息/Info

Title:
Dynamic Changes of Plant Community on Rehabilitated Land in Early Succession Stage in Yan'an Area
作者:
薛智德12朱清科1梁宗锁2康永祥2常磊1
1.北京林业大学 水土保持学院, 北京100083; 2.西北农林科技大学, 陕西 杨陵 712100
Author(s):
XUE Zhide12 ZHU Qingke1LIANG Zongsuo2KANG Yongxiang2CHANG Lei1
1.School of Soil and Water Conservation, Beijing Forestory University, Beijing 100083, China;2.Northwest A & F University ,Yangling ,Shaanxi 712100,China
关键词:
植物群落动态变化群落演替生态恢复
Keywords:
plant community fluctionsuccessionecology restoration
分类号:
S718.542
文献标志码:
A
摘要:
用固定标准地结合临时样地的方法对延安研究区退耕初期不同退耕年份植被恢复过程中群落形成、组成及其变化进行了研究。结果表明①沙蓬和黄花蒿首先占据退耕地,甚至可形成单优群落。②退耕3 a后,土壤结皮逐渐发育,限制了沙蓬种子的萌发,其他物种趁机占领沙蓬的生态位,群落组成相对丰富,主要植物种有黄花蒿、狗尾草、铁杆蒿、达乌里胡枝子及杠柳。③若群落内或周围有杠柳“母树”,第4~5 a就可以形成杠柳群落;样地周围若有白刺花种源,同期内白刺花也可进入样地,但不会成为优势种。④退耕地植物群落形成和演替的前期,演替进程主要是由该立地初期所拥有的植物种类决定。⑤植物群落动态变化及演替过程中,种间替代是逐渐的,演替系列是连续的,而不是离散的。
Abstract:
The composition and development of plant community in the process of natural vegetation restoration on the rehabilitated land in early years were studied by means of fixed and temporary sample plots in Yanan experimental area. The results indicate that(1) Squarrose agriophyllum (Agriophyllum arenarium)and sweet wormwood(Artemisia annua)were two main kinds of pioneer plants even to form dominated community. (2)After the third year, with the development of biological soil crust,the plant community species were abundant,such as Setaria viridis, Artemisia scoparia,Poa sphondylodes,Stipa bungeana,Tripolium vulgare,Heteropappus altaicus,Lespedeza daurica. (3)Near the pots, if there existed seed shrubs of Periploca sepiumsepium or Sophara viciifolia,they could form communities in the plots after third year. Periploca sepiumsepium, a widely distributed species, could also develop nondominated community at 4th to 5th years.(4)The early succession process usually depended on plant species that existed in the early plant community.(5) In succession process, the plant community could not be regarded as a “organism”; their successional series were continuous, not discrete.

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备注/Memo

备注/Memo:
收稿日期:20061030修回日期:20061225基金项目:国家“十五”林业科技支撑计划(2006BAD03A0302);国家自然科学基金(90302005)作者简介:薛智德(1963), 男,陕西大荔人,副教授,博士生,主要从事植被恢复方面的研究和教学工作。
更新日期/Last Update: 2010-05-04