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

Arid

	塔里木河干流中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 the Middle Reaches of the Tarim River
	吴俊侠; 张希明; 李利; 邓潮洲; 刘国军; 武广洋
来源期刊	干旱区研究
ISSN	1001-4675
出版年	2010
卷号	27 期号:2 页码:242-248
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: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,且动态指数大于0,表明胡杨种群结构合理,为增长型种群.4个函数曲线表明,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,种群能够稳定生长.
英文摘要	Desert Populus euphratica forests grow widely in the Tarim River Basin, an arid desert region. Survival and development of desert P.euphratica has great ecological benefits, economic returns and social effects. Since the 1960s, water and land resources have been overexploited in the upper reaches of the Tarim River, which has resulted in a large number of nonbearing trees and degeneration and even death of P.euphratica forests in large areas, and damaged directly the sustainable development of oasis agriculture and ecological balance. Based on field investigation and data analysis, in this paper, a static life table of P.euphratica populations is worked out, the curves of survival, survival rate, cumulative mortality rate, mortality and risk rate of P.euphratica populations are charted, and the population dynamic trend is analyzed using time sequence analysis and flop index so as to reveal the population structure, quantitative dynamics, survival status and development trend of P.euphratica forests in the future, and also provide the theoretical basis for rationally utilizing the P.euphratica resources and conserving the dominant P.euphratica populations. The results show that the size structure of P.euphratica during the study period was in a positive pyramidal shape, and the proportion of young trees was high. The proportion of I-II age class was up t0 66.2%, indicating that there were abundant subsequent seedling resources to support the growth of P.euphratica populations at the middle reaches of the Tarim River. The survival curve of P.euphratica populations was DeeveyC-shaped (concave-shaped) at the middle reaches of the Tarim River.In addition, dynamic index was 47.72% and higher than 0, indicating the structure of P.euphratica populations was good enough. Time sequence prediction models for the populations show that the number of aged P.euphratica trees will increase in the future, and P.eu.phratica populations will grow steadily because of the rich subsequent seedling resources.
中文关键词	胡杨种群 ; 生命表 ; 存活曲线 ; 生存分析 ; 动态指数 ; 时间序列
英文关键词	Populus euphratica population time-specific life table survival curve survival analysis dynamic index time sequence
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:3924808
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/2XILL650/225059
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,李利,等. 塔里木河干流中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,2010,27(2):242-248.
APA	吴俊侠,张希明,李利,邓潮洲,刘国军,&武广洋.(2010).塔里木河干流中游胡杨种群特征与动态分析.干旱区研究,27(2),242-248.
MLA	吴俊侠,et al."塔里木河干流中游胡杨种群特征与动态分析".干旱区研究 27.2(2010):242-248.