干旱区生态环境知识资源中心(Arid): 塔里木河干流胡杨种群结构与分布格局研究

Arid

	塔里木河干流胡杨种群结构与分布格局研究
其他题名	Population Structure and Spatial Distribution of the Populus euphratica in the Mainstream of the Tarim River
	白元 1; 徐海量1 ; 涂文霞 2; 凌红波 1; 傅荩仪 1; 王希义 1
来源期刊	西北植物学报
ISSN	1000-4025
出版年	2013
卷号	33 期号:6 页码:1216-1223
中文摘要	采用样方法对塔里木河干流上、中、下游胡杨(Populus euphratica)种群按径级、高度级、长势级进行实地调查与统计,绘制径级结构图、高度结构图和长势结构图,并应用理论分布模型和聚集强度指数进行种群分布格局分析。结果表明:(1)塔里木河干流胡杨径级结构呈纺锤型,幼苗和幼树缺乏(Ⅰ~Ⅱ级占28.83%),以Ⅲ~Ⅴ级占绝对优势(占66.62%),老龄植株所占比例最低(Ⅵ级占4.55%),从龄级结构看种群处于衰退的早期阶段,存活曲线符合DeeveyⅠ(凸)型,为稳定种群。(2)塔里木河上游胡杨种群高度级比例差异小(变幅为21.60%~31.07%),处于发展阶段;中游种群结构呈正态分布,为稳定增长型;下游种群高度级比例差异大(变幅为12.50%~51.14%),处于衰退阶段。(3)塔里木河干流胡杨种群分布格局呈聚集分布,不同离河距离的胡杨种群聚集强度有差异,不同龄级的胡杨种群聚集强度也不同,幼树的聚集程度高,Ⅵ级聚集强度较其他龄级差。
英文摘要	The main purpose of this study is to examine the fluctuation characteristics of natural Populus euphratica community.Field data were obtained by tally with contiguous grid quadrat method.Investigated contents include the community structure,dominant species,and the height structure,growth vigor and diameter structure of P.euphratica.Finally,the population structure and distribution pattern of P.euphratica in desert riparian forest were discussed on the basis of theoretical distributing model and assembling intensity index.The results shows:(1)The DBH class allocation of the P.euphratica populations mainly concentrated on the middle DBH class;Ⅲ~Ⅴ class was 66.62%;the seedling and young tree are insufficient; Ⅰ~Ⅱ class was 28.83% and Ⅵ class was 4.55%;the population spatial structure were not of integrity.It indicated that population show a decline stage in the early.The survivorship curve of the population conformed to the type of Deevey Ⅰ.(2)The height class structure of P.euphratica population had little difference,with range of 21.60%~31.07%,which belonged to growth-oriented population in the upper reaches of Trim River.The diameter class structure showed approximately normal distribution,which shows that the overall population is steadily increasing in middle reaches of Tarim River.The height class structure had great difference,with range of 12.50%~51.14%,the distribution of the diameter class was shown as a negatively skewed distribution,which belonged to stable type population.(3)The ground survey analysis indicated that P.euphratica distribution pattern shows aggregated distribution in the mainstream of the Tarim River,the aggregation intensity was different at various distance away from the river.P.euphratica was aggregated distribution in different stages and the aggregation intensity was different.The variations in spatial distribution patterns of populations in different habitats and at different growth stages were closely related to the biological and ecological characteristics of the species.
中文关键词	种群结构 ; 胡杨 ; 分布格局 ; 塔里木河干流
英文关键词	population structure PopuLus euphratica spatial pattern mainstream of Tarim River
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:4876646
来源机构	中国科学院新疆生态与地理研究所 ; 新疆师范大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/230318
作者单位	1.中国科学院新疆生态与地理研究所, 荒漠与绿洲生态国家重点实验室, 乌鲁木齐, 新疆 830011, 中国; 2.新疆师范大学地理科学与旅游学院, 新疆干旱区湖泊环境与资源实验室, 乌鲁木齐, 新疆 830054, 中国
推荐引用方式 GB/T 7714	白元,徐海量,涂文霞,等. 塔里木河干流胡杨种群结构与分布格局研究[J]. 中国科学院新疆生态与地理研究所, 新疆师范大学,2013,33(6):1216-1223.
APA	白元,徐海量,涂文霞,凌红波,傅荩仪,&王希义.(2013).塔里木河干流胡杨种群结构与分布格局研究.西北植物学报,33(6),1216-1223.
MLA	白元,et al."塔里木河干流胡杨种群结构与分布格局研究".西北植物学报 33.6(2013):1216-1223.