塔里木河中游植物群落与环境因子的关系

doi:10.11821/xb200301013

地理学报 ›› 2003, Vol. 58 ›› Issue (1): 109-118.doi: 10.11821/xb200301013

塔里木河中游植物群落与环境因子的关系

张元明,陈亚宁,张道远

中国科学院新疆生态与地理研究所，乌鲁木齐 830011

收稿日期:2002-08-29 修回日期:2002-10-22 出版日期:2003-01-25 发布日期:2003-01-25
作者简介:张元明 (1972- ), 男, 副研究员, 硕士生导师。主要从事干旱区植物生态学研究工作，发表论文20余篇。E-mail: zhang-y-m@263.net
基金资助:
国家自然科学基金重点项目 (90102007); 中国科学院知识创新重大项目(KZCX1-08-03)

Plant Communities and Their Interrelations with Environmental Factors in the Middle Reaches of the Tarim River

ZHANG Yuanming, ZHANG Daoyuan, CHEN Yaning

Xinjiang Institute of Ecology and Geography, CAS, Urumqi 830011, China

Received:2002-08-29 Revised:2002-10-22 Online:2003-01-25 Published:2003-01-25
Supported by:
National Natural Science Foundation of China, No. 90102007; Knowledge Innovation Project of CAS, No. KZCX1-08-03

摘要/Abstract

摘要：

应用数量分类和排序方法，对新疆塔里木河中游地区植被进行了多元统计分析。结果表明，该地区共有植物23种，隶属于11科21属。其中，多数植物种类在样方中的出现频次较低，说明该地区植物物种丰富度较低。TWINSPAN结果表明，该地区3个断面19个样地可分为3个主要类型，与实际调查结果一致。CCA排序结果同TWINSPAN分类结果基本一致，反映出植物群落分布格局的一般规律及其随环境因子梯度变化的趋势。分析了不同环境因子间的关系，并从定量的角度，以CCA排序图直观地揭示了决定塔里木河中游地区植物群落分布的环境因子主要是地下水位和土壤含水量，其回归模型分别为：X₁ = -9.5991L + 100.86 (R₂ = 0.6459)；X₂ = 1.65W + 43.011 (R₂ = 0.7646)。

关键词: 双向指示分类；典范对应分析；植物群落；环境因子；塔里木河

Abstract:

Plant communities were sampled in the lower reaches of the Tarim River, Xinjiang. The results showed that among the 475 sampled quartets from 19 sites, 23 plant species were identified, which belong to 21 genera in 11 families, most of which have low occurrence frequency in quadrats. The most common species of this study, Tamarix ramosissima occurred in 17 sites (89.47% of the total investigated sites), followed by Phragmites communis, which occurred in 12 sites (63.15% of the total investigated sites). Populus euphratica and Lycium ruthenicum were found in 11 sites respectively, accounting for 57.89% of the total sites. Quantitative classification (TWINSPAN) and ordination (CCA) methods were used to study the distribution patterns of 23 plant species at 19 sites in this study area. The TWINSPAN analysis identified three site groups. Site group 1 contains 7 sites, which were located in Shazihe transect. Site group 2 contains 5 sites, which were located in Wusman transect. Site group 3 contains 7 sites, which were located in Aqihe transect except for site 10. The site group 3 separated firstly from all the 19 sites by TWINSPAN showed evident difference with other two site groups. The 23 plant species could be also divided into 3 ecological species groups using TWINSPAN analysis. CCA results were consistent with TWINSPAN results. The distribution patterns of plant species were most strongly associated with underground water table, soil moisture and soil pH value. To a lesser extent, distribution of species was associated with soil alkalinity, underground water mineralization and altitude. The major environmental variables are ground water level and soil moisture, and the regression model as below respectively: X₁ = -9.5991L + 100.86 (R₂ = 0.6459);X₂ = 1.65W + 43.011 (R₂ = 0.7646). Although the species did not cluster into well-defined groups, loose arrangements of species can be identified which were associated in a similar way with the environmental variables.

Key words: TWINSPAN, CCA, plant communities, environmental factors, the middle reaches of the Tarim River

张元明,陈亚宁,张道远. 塔里木河中游植物群落与环境因子的关系[J]. 地理学报, 2003, 58(1): 109-118.

ZHANG Yuanming, ZHANG Daoyuan, CHEN Yaning. Plant Communities and Their Interrelations with Environmental Factors in the Middle Reaches of the Tarim River[J]. Acta Geographica Sinica, 2003, 58(1): 109-118.

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塔里木河中游植物群落与环境因子的关系

Plant Communities and Their Interrelations with Environmental Factors in the Middle Reaches of the Tarim River

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