干旱区生态环境知识资源中心(Arid): 塔里木荒漠绿洲过渡带植物种间关联性分析

Arid

	塔里木荒漠绿洲过渡带植物种间关联性分析
其他题名	Interspecific Associations of Plants in Desert-oasis Ecotone in Tarim Basin
	韩路 1; 王海珍 1; 王家强 2; 郝文芳 2
来源期刊	生态环境学报
ISSN	1674-5906
出版年	2015
卷号	24 期号:6 页码:932-937
中文摘要	采用2*2联列表,应用方差比率(VR)、X~2检验、种间关联指标和Pearson相关系数、Spearman秩相关系数检验等方法研究了塔里木荒漠绿洲过渡带植物群落种间关系,测定了8个主要种群种间关联性。结果表明:胡杨、柽柳和甘草、骆驼刺重要值较大(49.78%、31.21%、11.99%、11.86%),它们是构成乔木层、灌木层及草本层的优势种。植物群落大多数种对(78.57%)呈中性关联,负关联的种对数(6)多于正关联(0),种间联结松散,物种趋向于独立分布。植物群落总体关联性为显著负关联(0.5688),不同检验方法对种对间的检验结果均为正负关联比<1,反映出塔里木荒漠绿洲过渡带正处于不稳定的演替前期阶段,易受外界因素干扰而演替。乔灌木层为不显著的正关联,而乔灌木-草本层和草本-草本主要物种间呈显著负关联。因此,塔里木荒漠绿洲过渡带植被恢复应选择乔灌木作为恢复目标。
英文摘要	Interspecific relationship is one of the important fields in community dynamics research. Plant communities of desert-oasis ecotone succeed to form climax community under the natural climate conditions, in the Tarim basin in western China, these communities are natural barriers to desertification and help to protect oasis ecological safety. However, little is known about the interspecific relationships of dominant species in this area. Our objective was to investigate how the dominant plant species interact with each other and with other species in desert-oasis ecotone of Tarim Basin. We sampled an area of 1 hm~2 with 4 plots in the desert-oasis ecotone in the Tarim basin, 8 dominant plant species were selected according to the importance values and were studied for interspecific associations and correlations, by using variance ratio (VR) and association indexes analysis of the overall association and X~2 test, Pearson correlation coefficient test and Spearman rank correlation coefficient test, based on 2*2 contingency tables of species presence/absence data. The results showed that Populus euphratica, Tamarix ramosissima,Glycyrrhiza inflate and Alhagi sparsifolia had higher importance values (49.78%, 31.21%, 11.99%, 11.86%, respectively), and were dominant species of arboreal, shrub and herbaceous layers, respectively. Significant association was observed in 21.43% of the 28 species pairs, no significantly positive correlation species pair was found in the study area, more population pairs of negative correlation (6) were found than that of positive correlation (0). The interspecific association was dispersive, the species were found to distribute independently. There was a significantly negative association (0.5688) of community overall association, various statistical methods all found that the ratios of positive to negative associations were less than 1, implying that the local desert plant community was at an unstable early-successional stage and vulnerable to succeed by outside interference factors. There were insignificantly positive associations among arbor-shrub species, while significantly negative associations existed among arbor/shrub-herb, herb-herb species pairs, suggesting that arboreal and shrub species should be chosen for vegetation restoration in the desert-oasis ecotone in Tarim basin.
中文关键词	塔里木盆地 ; 荒漠绿洲过渡带 ; 种群 ; 种间关联 ; 植被恢复
英文关键词	tarim basin desert-oasis ecotone population interspecific association vegetation restoration
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:5480456
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/233113
作者单位	1.塔里木大学植物科学学院, 塔里木盆地生物资源保护利用国家重点实验室, 阿拉尔, 新疆 843300, 中国; 2.塔里木大学植物科学学院, 阿拉尔, 新疆 843300, 中国
推荐引用方式 GB/T 7714	韩路,王海珍,王家强,等. 塔里木荒漠绿洲过渡带植物种间关联性分析[J],2015,24(6):932-937.
APA	韩路,王海珍,王家强,&郝文芳.(2015).塔里木荒漠绿洲过渡带植物种间关联性分析.生态环境学报,24(6),932-937.
MLA	韩路,et al."塔里木荒漠绿洲过渡带植物种间关联性分析".生态环境学报 24.6(2015):932-937.