干旱区生态环境知识资源中心(Arid): 塔里木河上游胡杨种群特征与动态分析

Arid

	塔里木河上游胡杨种群特征与动态分析
其他题名	Characteristic and dynamics analysis of Populus euphratica populations at upper reaches of Tarim River
	吴俊侠; 张希明; 邓潮洲; 刘国军
来源期刊	干旱区地理
ISSN	1000-6060
出版年	2010
卷号	33 期号:6 页码:923-929
中文摘要	通过样地调查和数据统计, 编制胡杨种群静态生命表, 绘制存活曲线、生存率曲线、累计死亡率曲线、种群死亡密度曲线和危险率曲线, 分析种群数量特征. 同时, 结合种群动态量化方法及时间序列预测, 分析种群数量动态变化. 结果表明: 上游区域胡杨种群年龄结构呈金字塔型, 幼龄级所占比例较大; 存活曲线接近Deevey C(凹)型, 且动态指数>0, 表明胡杨种群结构合理, 为增长型种群; 生存曲线、累计死亡率曲线、死亡密度曲线和危险率曲线表明, 胡杨种群前期幅度变化较大, 后期趋于稳定; 时间序列分析表明, 由于丰富的后续资源, 种群能够稳定的生长
英文摘要	Desert Populus euphratica forest widely distributes in an arid desert region, P. euphratica forest exists in the Tarim River Basin. The existence and development of desert P. euphratica has great ecological, economical and social benefit. Since 1960s soil and water resources of the upper reaches of the Tarim River have excessively been exploited, which induced recession, nonbearing trees and death of large area P. euphratica forest, and directly damaged sustainable development of oasis agriculture and ecological balance. In order to illuminate the population structure and quantitative dynamic, living status and development trend in the future, and provides theoretical base for utilizing resources rationally and protecting dominant population, by a field investigation and data analysis, we developed a static life table of P. euphratica populations based on the population static life table and theory of survival analysis. Survivorship curves, survival rate, cumulative mortality rate, mortality density and hazard rate were determined, and at the same time, population dynamics were analyzed using time sequence analysis and development index. The results show: the size structure of populations shows positive pyramidal type and younger age -class individuals have higher percentages. The number of I age class reaches up to 61.02%, which indicates there are abundant subsequent seedling resources to support growing of P. euphratica populations at the upper reaches of the Tarim River. The survivorship curve of P. euphratica populations belongs to the type of Deevey C (concave -type) at the upper reaches of the Tarim River. However, the slope of survivorship curve of P. euphratica populations is comparatively large. In addition, development index is 60. 97%, which is greater than 0, indicating the structure of P. euphratica population is progressive populations. Four function curves demonstrate that the individuals of P. euphratica sharply decreased at the initial stage and then leveled off at the late stage of survival curve. Time sequence prediction models for the populations show that the number of older individuals would increase after 10, 20, 30 years. P. euphratica populations would grow steadily as a result of rich subsequent seeding resources
中文关键词	胡杨种群 ; 特定时间生命表 ; 存活曲线 ; 生存分析 ; 动态指数 ; 时间序列
英文关键词	P. euphratica populations static life table survivorship curve survival analysis development index time sequence
语种	中文
国家	中国
收录类别	CSCD
WOS类目	ECOLOGY
WOS研究方向	Environmental Sciences & Ecology
CSCD记录号	CSCD:4103244
来源机构	中国科学院新疆生态与地理研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/225034
作者单位	中国科学院新疆生态与地理研究所, 中国科学院干旱区生物地理与生物资源重点实验室, 乌鲁木齐, 新疆 830011, 中国
推荐引用方式 GB/T 7714	吴俊侠,张希明,邓潮洲,等. 塔里木河上游胡杨种群特征与动态分析[J]. 中国科学院新疆生态与地理研究所,2010,33(6):923-929.
APA	吴俊侠,张希明,邓潮洲,&刘国军.(2010).塔里木河上游胡杨种群特征与动态分析.干旱区地理,33(6),923-929.
MLA	吴俊侠,et al."塔里木河上游胡杨种群特征与动态分析".干旱区地理 33.6(2010):923-929.