塔里木盆地南缘旱生芦苇生态特征与水盐因子关系

被引：24

作者：

贡璐

朱美玲

塔西甫拉提·特依拜

张雪妮

韩丽

解丽娜

机构：

[1] 新疆大学资源与环境科学学院

[2] 绿洲生态教育部重点实验室

来源：

生态学报 | 2014年 / 10期

关键词：

芦苇; 冗余分析; 塔里木盆地南缘; 水盐因子; 极端干旱区;

D O I：

暂无

中图分类号：

Q948 [植物生态学和植物地理学];

学科分类号：

071012 ; 0713 ;

摘要：

选择位于塔里木盆地南缘极端干旱区的克里雅河流域于田绿洲为靶区,结合经典统计学和冗余分析技术,研究了旱生芦苇生态特征与水盐因子的分布规律及相互关系。统计学分析显示:芦苇沿河岸至荒漠方向株高、盖度和地上生物量减少、地下生物量增加,水分与土壤盐分也呈现一定的梯度变化规律。冗余分析结果表明:水分为芦苇生态特征变化的关键驱动因子,地下水埋深和土壤水分与芦苇的生态特征呈现极显著的相关关系,钠吸附比、全盐与芦苇的生态特征呈现显著的相关关系,其他指标与芦苇生态特征的相关性均不显著。水盐因子对芦苇生态特征影响的重要性排序为地下水埋深>土壤水分>钠吸附比>全盐>HCO-3>pH值>Cl-/SO2-4。综合水盐要素,水分对芦苇生态特征的影响大于盐分。

引用

页码：2509 / 2518

页数：10

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