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中国沙漠  2018, Vol. 38 Issue (2): 315-323    DOI: 10.7522/j.issn.1000-694X.2017.00103
生物与土壤     
塔里木河下游胡杨(Populus euphratica)种群结构
周莹莹1,2, 陈亚宁2, 朱成刚2, 陈亚鹏2, 陈晓林2,3
1. 新疆师范大学 地理科学与旅游学院, 新疆 乌鲁木齐 830054;
2. 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, 新疆 乌鲁木齐 830011;
3. 中国科学院大学, 北京 100049
Population Structure Characteristics of Population euphratica in the Lower Reaches of Tarim River
Zhou Yingying1,2, Chen Yaning2, Zhu Chenggang2, Chen Yapeng2, Chen Xiaolin2,3
1. College of Geography and Tourism, Xinjiang Normal University, Urumqi 830054, China;
2. State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China;
3. University of Chinese Academy of Sciences, Beijing 100049, China
 全文: PDF(2537 KB)  
摘要: 种群结构特征能够很好地反映种群生存状况与发展动态。以塔里木河下游胡杨(Populus euphratica)种群为研究对象,对多年生态输水恢复后胡杨种群的密度、年龄结构、性比结构及空间结构进行了分析。结果表明:塔里木河下游胡杨种群的龄级结构整体上呈倒金字塔型,种群动态指数和种群密度等指标与时间序列分析结果一致,即胡杨种群老化且衰退趋势尚未扭转并仍将继续;胡杨种群性比显著偏雄,偏离程度随生境条件恶化而增大;胡杨种群分布格局表现为显著的集群分布,且聚集强度无太大差异。经过近18年的生态输水恢复,虽然塔里木河下游沿河附近的生态有所好转,但在远离河道的更大范围的胡杨种群退化衰败趋势仍未彻底扭转,单一沿自然河道的线性生态输水因缺乏面上水文过程而难以改善种群更新。建议在生态输水的过程中,通过人工措施,扩大浸淹范围和受水面积,为胡杨种群繁殖与更新提供条件。
关键词: 塔里木河胡杨(Populus euphratica)年龄结构性比结构空间分布格局    
Abstract: Population structure characteristics can reflect the living conditions and future trends of one population. In this paper, we investigated the living status of Populus euphratica in the lower reaches of Tarim River, after years of ecological water conveyances to restore the ecosystem. The population density, age structure, sex ratio structure and spatial structure of P. euphratica were analyzed based on field investigation. The results indicated that the pattern of age structure of P. euphratica in the lower reaches of Tarim River followed the "inverted pyramid" pattern. The population dynamics index, population density, had similar patterns with that of the age structure, indicating the declining trend of P. euphratica will continue. The P. euphratica was significantly male-biased, and this deviation increased with the deterioration of habitats. The distribution pattern of P. euphratica showed a significant cluster distribution with no intensity difference among them. After 18 years, ecological water conveyances, the degradation trends of the P. euphratica distributed far from the river have not yet completely reversed although the ecological conditions near the river have improved. The ecological water conveyances along a natural river channel created a too narrow flooded area to improve the population regeneration rates. Therefore, during the processes of ecological water conveyances, artificial measures are suggested to be taken to extend the flooded area to provide conditions for the reproduction and regeneration of the P. euphratica.
Key words: Tarim River    Populus euphratica    age structure    sex ratio structure    distribution pattern
收稿日期: 2017-07-22 出版日期: 2018-03-20
ZTFLH:  Q145  
基金资助: 国家科技支撑计划课题(2014BAC15B02);国家自然科学基金项目(41371515);中国科学院STS项目(KFJ-STS-ZDTP-036)
通讯作者: 陈亚宁(E-mail:chenyn@ms.xjb.ac.cn)     E-mail: chenyn@ms.xjb.ac.cn
作者简介: 周莹莹(1991-),女,新疆阿勒泰人,硕士研究生,主要从事干旱区植物生理生态研究。E-mail:1050718189@qq.com
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引用本文:

周莹莹, 陈亚宁, 朱成刚, 陈亚鹏, 陈晓林. 塔里木河下游胡杨(Populus euphratica)种群结构[J]. 中国沙漠, 2018, 38(2): 315-323.

Zhou Yingying, Chen Yaning, Zhu Chenggang, Chen Yapeng, Chen Xiaolin. Population Structure Characteristics of Population euphratica in the Lower Reaches of Tarim River. Journal of Desert Research, 2018, 38(2): 315-323.

链接本文:

http://www.desert.ac.cn/CN/10.7522/j.issn.1000-694X.2017.00103        http://www.desert.ac.cn/CN/Y2018/V38/I2/315

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