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                          Guihaia  Sept. 2023ꎬ 43(9): 1636-1645

            DOI: 10.11931/ guihaia.gxzw202203046
            李作森ꎬ 艾尼瓦尔吐米尔ꎬ 2023. 乌鲁木齐达坂城山区地衣生态位特征的研究 [J]. 广西植物ꎬ 43(9): 1636-1645.
            LI ZSꎬ TUMUR Aꎬ 2023. Niche characteristics of lichen in Dabancheng mountainous areaꎬ Urumqi [ J]. Guihaiaꎬ 43(9):
            1636-1645.


                     乌鲁木齐达坂城山区地衣生态位特征的研究



                                           李作森ꎬ 艾尼瓦尔吐米尔                    ∗


                                        ( 新疆大学 生命科学与技术学院ꎬ 乌鲁木齐 830046 )

                 摘  要: 为揭示达坂城山区地衣对生境资源的利用状况及竞争程度ꎬ该研究在野外设置 30 个样方并调查其
                 物种盖度数据ꎬ利用生态位宽度、生态位重叠指数及排序分析ꎬ探讨达坂城山区地衣的生态位特征及环境影
                 响因子ꎮ 结果表明:(1)达坂城山区生态位最宽的为丽黄鳞衣( Rusavskia elegans) 和内卷野粮衣( Circinaria
                 contorta)ꎬ对不同环境具有较强的适应性ꎬ其他地衣物种生态位宽度较窄ꎬ对环境资源利用程度低ꎮ (2) 物
                 种间生态位重叠值整体偏低ꎬ生态位重叠值较高的物种对极少ꎬ地衣物种生态位分化程度高ꎬ物种间竞争不
                 激烈ꎮ (3)生态位较宽的物种与多数物种之间都存在生态位重叠ꎬ但重叠值较低ꎻ一些生态位较窄的物种与
                 其他物种之间的生态位重叠值较高ꎻ生态位重叠和生态位宽度之间并无直接的线性关系ꎮ (4) 地衣物种沿
                 海拔梯度分布具有差异ꎬ海拔、光照强度、湿度、风速和人为干扰是本地区地衣群落物种生态位特征差异的
                 主导环境因子ꎮ 综上所述ꎬ达坂城山区地衣物种由于生境资源的竞争占据各自独特的生态位ꎬ形成了生态
                 位的分化ꎬ群落较为稳定ꎬ沿海拔梯度的生境条件差异是物种差异分布的重要原因ꎮ 该研究可为地衣群落
                 构建研究提供理论依据ꎬ并对该地区地衣物种的多样性和生境保护具有重要意义ꎮ
                 关键词: 地衣ꎬ 生态位宽度ꎬ 生态位重叠ꎬ 海拔梯度ꎬ 达坂城山区
                 中图分类号: Q948    文献标识码: A    文章编号: 1000 ̄3142(2023)09 ̄1636 ̄10



                       Niche characteristics of lichen in Dabancheng
                                      mountainous areaꎬ Urumqi


                                                                          ∗
                                             LI Zuosenꎬ TUMUR Anwar

                               ( College of Life Sciences and Technologyꎬ Xinjiang Universityꎬ Urumqi 830046ꎬ China )

                 Abstract: In order to reveal the status of habitat resource utilization and the degree of competition among lichens in
                 Dabancheng mountainous areas. In this workꎬ 30 plots were sampled in the field and the species cover data of the plots
                 were investigatedꎬ and the niche characteristics and environmental factors of lichen community species were analyzed by
                 using niche widthꎬ niche overlap index and ordination analysis in this Dabancheng mountainous area. The results were as
                 follows: (1) The niche width of Rusavskia elegans and Circinaria contorta were the widest in Dabancheng mountainous
                 areaꎬ indicating that they were more adaptable to different environments. The niche widths of other lichen species were
                 narrowꎬ indicating that the species used the environmental resources to a less extent. (2) The niche overlap value


              收稿日期: 2022-05-07
              基金项目: 国家自然科学基金(32160046ꎬ31660009)ꎮ
              第一作者: 李作森(1996-)ꎬ硕士研究生ꎬ主要从事地衣生态学研究ꎬ(E ̄mail)751886659@ qq.comꎮ
            ∗
              通信作者: 艾尼瓦尔吐米尔ꎬ博士ꎬ教授ꎬ主要从事地衣生态学研究ꎬ(E ̄mail)anwartumursk@ xju.edu.cnꎮ
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