干旱区生态环境知识资源中心(Arid): 民勤绿洲荒漠过渡带植物群落数量分类和排序研究

Arid

	民勤绿洲荒漠过渡带植物群落数量分类和排序研究
其他题名	Quantitative Classification and Ordination Analysis on Vegetation in the Minqin Oasis-Desert Ecotone
	赵鹏 1; 徐先英 2; 金红喜 2; 张进虎 2; 唐卫东 2; 柴成武 2; 靳虎甲 2; 董志玲 3
来源期刊	西北植物学报
ISSN	1000-4025
出版年	2014
卷号	34 期号:2 页码:364-371
中文摘要	绿洲-荒漠过渡带作为绿洲与荒漠的连接区域,在干旱区生态环境退化与恢复研究中具有重要意义。该研究以民勤绿洲荒漠过渡带为例,在47个植物群落调查样地的基础上,应用双向指示种分类法(TWINSPAN)和除趋势对应分析法(DCA)对研究区典型植物群落进行数量分类和排序,并讨论了影响植物群落类型及空间分布的环境因子。结果表明:(1)研究区植物群落结构简单,植物种以旱生耐盐植物为主。(2)TWINSPAN分类将研究区的植物群落划分为11个群丛类型,即白刺+盐生草群丛、白刺+芦苇群丛、白刺+盐爪爪群丛、盐爪爪+黑果枸杞群丛等,分类结果在空间上反映了民勤绿洲荒漠过渡带植物群落的演替变化趋势。(3)DCA排序结果验证了TWINSPAN分类结果的合理性,同时指出制约民勤绿洲荒漠过渡带植物群落类型及空间分布的重要环境因子是地下水埋深和地貌形态。
英文摘要	Due to the special role as connection corridor between oasis and desert,oasis-desert ecotone was a key area to carry out research on ecosystem degradation and recovery in arid region.As the result of dry climate, fragile environment system and long-term human activities,Minqin oasis and its surrounding areas had degraded seriously.In this study,the desert plant communities in the oasis-desert ecotone of Minqin(Minqin ODE)were selected as case study.We obtained valuable data on 19major plant species from 47 study plots of desert plant communities in Minqin ODE and analyzed that by the means of two-way indicator species analysis(TWINSPAN)and detrended correspondence analysis(DCA)in order to identify the main plant associations and environment gradient correlated to their distribution.The results show that:(1)In Minqin ODE,the structure of desert vegetation communities is simple and the species of plants have the characteristics of drought resistance and salt tolerance(2)The outcome of TWINSAN shows that the desert plant communities in Minqin ODE were composed of 11plant associations and its rationality was verified by DCA ordination.Meanwhile,the succession trends of Minqin ODE are also reflected spatially in the classification result.The main associations include Nitraria tangutorum +Halogeton glomeratus,N. tangutorum+Phragmites australis,N.tangutorum+Kalidium foliatum,K.foliatum+Lycium ruthenicum et al.(3)The result of DCA ordination shows that the groundwater table and landforms are the leading factors which decide the association type and spatial distribution of desert plant communities in the Minqin ODE.
中文关键词	双向指示种分析 ; 除趋势对应分析 ; 民勤绿洲荒漠过渡带 ; 环境梯度
英文关键词	two-way indicator species analysis detrended correspondence analysis Minqin Oasis-Desert ecotone environmental gradient
语种	中文
国家	中国
收录类别	CSCD
WOS类目	PLANT SCIENCES
WOS研究方向	Plant Sciences
CSCD记录号	CSCD:5081267
来源机构	甘肃农业大学 ; 甘肃省治沙研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/231905
作者单位	1.甘肃农业大学林学院, 兰州, 甘肃 730070, 中国; 2.甘肃省治沙研究所, 荒漠化与风沙灾害防治国家重点实验室培育基地, 兰州, 甘肃 730070, 中国; 3.中国林业科学研究院,民勤治沙综合试验站, 民勤, 甘肃 733000, 中国
推荐引用方式 GB/T 7714	赵鹏,徐先英,金红喜,等. 民勤绿洲荒漠过渡带植物群落数量分类和排序研究[J]. 甘肃农业大学, 甘肃省治沙研究所,2014,34(2):364-371.
APA	赵鹏.,徐先英.,金红喜.,张进虎.,唐卫东.,...&董志玲.(2014).民勤绿洲荒漠过渡带植物群落数量分类和排序研究.西北植物学报,34(2),364-371.
MLA	赵鹏,et al."民勤绿洲荒漠过渡带植物群落数量分类和排序研究".西北植物学报 34.2(2014):364-371.