岷江上游刺旋花种群格局研究

	岷江上游刺旋花种群格局研究
	孙书存 ; 刘照光
刊名	应用与环境生物学报
	1997
卷号	3 期号:3 页码:193-198
关键词	刺旋花静态生命表年龄结构存活曲线分布格局
产权排序	1
合作状况	其它
中文摘要	在随机取样、解剖的基础上,对岷江上游灌丛优势种刺旋花(Convolvulus tragacuthoiedes)建立种群静态生命表进行统计分析,以探索其在该地区特殊的生态学意义。结果表明:刺旋花种群的年龄结构为稳定发展型,存活曲线接近于decvyⅢ型;生活史中分别在1a和4～5a有两个死亡高峰;种群数量变化可用年龄结构模型Xx＝3.37·x-3.21(其中x表示年龄,Xx表示种群数量)来预测.X2检验法和区组样方方差法的格局分析结果都表明:刺旋花种群的分布格局随生境破碎程度和水分状况有很大差异,在不同样地分别趋向于随机分布和集群分布.
英文摘要	Convolvulus tragacuthoiedes, a dominant species of the semiarid scrubs in the upper reaches of the Minjiang River was studied to explore its ecological significance in this region. A life table of C. tragacuthoiedes population was built based on random sampling and anatomical study. The results showed that the age structure was of stable development type, the survival curve approximated to the Decvy Ⅲ, and the two mortality peaks in its life history were at the ages 1 a and 4a~5a, respectively. The dynamics of C.tragacuthoiedes population could be described by the following model:Xx=3.37·x-3.21 (r=0.801,P<0.05;where Xx= number of survival, x=age). The results of both X2-test and blocked-quadrat variance (BQV)analyses indicated that the distribution pattern of the C. tragacuthoiedes population, due to the distinct degree of ground surface tettering and water content, tends to be random and aggregative distribution respectively in the two plots studied.
学科主题	生态研究
收录类别	其他
语种	中文
公开日期	2016-02-26
内容类型	期刊论文
源URL	[http://210.75.237.14/handle/351003/26652]
专题	成都生物研究所_生态研究
推荐引用方式 GB/T 7714	孙书存,刘照光. 岷江上游刺旋花种群格局研究[J]. 应用与环境生物学报,1997,3(3):193-198.
APA	孙书存,&刘照光.(1997).岷江上游刺旋花种群格局研究.应用与环境生物学报,3(3),193-198.
MLA	孙书存,et al."岷江上游刺旋花种群格局研究".应用与环境生物学报 3.3(1997):193-198.