中文摘要：

以塔里木盆地南缘自然盐渍生境生长的疏叶骆驼刺为研究对象，结合冗余分析技术和传统的相关分析，研究疏叶骆驼刺生态特征与环境因子的关系，揭示疏叶骆驼刺对环境因子变化的生态响应规律。结果表明：土壤总盐、土壤有机碳含量、土壤全氮含量、地下水矿化度与疏叶骆驼刺生态特征呈极显著的相关性（P〈0.01），地下水位与疏叶骆驼刺生态特征呈显著的相关性（P〈0.05），其他指标与疏叶骆驼刺生态特征的相关性均不显著（P〉0.05）。综合分析环境因子认为，地下水矿化度、地下水位、土壤总盐是影响疏叶骆驼刺生态特征的主要因素。盐渍生境下地下水矿化度、土壤总盐的升高和地下水位的上升不利于疏叶骆驼刺的生长。因此，在利用疏叶骆驼刺进行盐渍区植被修复时，应综合考虑地下水矿化度、地下水位、土壤总盐。

英文摘要：

This paper studied the relationship between the ecological characteristics of Alhagi sparsifolia and environmental factors in natural saline habitats of southern marginal Tarim Basin and revealed its ecological responses to the variation of environmental factors using correlation analysis and redundancy analysis by CANOCO. The results showed that there was an extremely significant correlation between soil total salt, soil organic carbon content, soil total nitrogen content, mineralization degree of groundwater and the ecological characteristics of A. sparsifolia. The correlation of groundwater depth with ecological characteristics was significant while other indicators had no significant correlation with the plant’s ecological characteristics. The mineralization degree of groundwater, groundwater depth, and soil total salt were main factors influencing ecological characteristics of A. sparsifolia. The increase of groundwater mineralization degree and soil total salt and groundwater table were not beneficial to the growth of A. sparsifolia in saline habitat. Therefore, we should comprehensively consider groundwater mineralization degree, groundwater depth and soil total salt when restoring vegetation by A. sparsifolia.