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黄欢, 张朝晖. 岩溶型铝土矿尾矿堆不同自然演替阶段苔藓植物多样性特征[J]. 植物科学学报, 2017, 35(6): 807-814. DOI: 10.11913/PSJ.2095-0837.2017.60807
引用本文: 黄欢, 张朝晖. 岩溶型铝土矿尾矿堆不同自然演替阶段苔藓植物多样性特征[J]. 植物科学学报, 2017, 35(6): 807-814. DOI: 10.11913/PSJ.2095-0837.2017.60807
Huang Huan, Zhang Zhao-Hui. Diversity characteristics of bryophytes in different succession stages on the karst bauxite tailing piles[J]. Plant Science Journal, 2017, 35(6): 807-814. DOI: 10.11913/PSJ.2095-0837.2017.60807
Citation: Huang Huan, Zhang Zhao-Hui. Diversity characteristics of bryophytes in different succession stages on the karst bauxite tailing piles[J]. Plant Science Journal, 2017, 35(6): 807-814. DOI: 10.11913/PSJ.2095-0837.2017.60807

岩溶型铝土矿尾矿堆不同自然演替阶段苔藓植物多样性特征

Diversity characteristics of bryophytes in different succession stages on the karst bauxite tailing piles

  • 摘要: 按空间代替时间序列的方法,对贵州省修文县小山坝岩溶型铝土矿区尾矿堆5个不同自然演替阶段苔藓植物多样性进行了研究。结果显示:(1)苔藓植物共有11科18属31种,其中藓类9科16属29种,苔类2科2属2种。在演替过程中,苔藓植物生活型单一,仅矮丛集型(占67.7%)和交织型(占32.3%),矮丛集型占优势地位。苔藓植物物种组成简单,纯群落较多,混合群落随演替阶段逐渐增多。(2)不同自然演替阶段苔藓植物群落Shannon-Wiener指数、Pielou均匀度指数和丰富度指数有所不同,裸岩阶段最低(0.196、0.283和-1.930),草灌丛阶段最高(3.470、1.281和2.342),乔灌木阶段逐渐下降(2.128、0.887和1.267)。苔藓植物种的替代速率与相似性变化趋势相反。小山坝岩溶型铝土矿区尾矿堆苔藓植物多样性在5个不同自然演替阶段呈先上升后下降的变化规律,多样性水平总体呈上升趋势,研究结果可为岩溶型铝土矿区生态恢复和生物多样性保护提供基础资料。

     

    Abstract: Based on spatial replacing temporal series, we studied the diversity of the bryophytes in five different natural succession stages in the karst bauxite tailing piles of the Xiaoshanba Bauxite Deposit, Xiuwen County, Guizhou Province. Results showed that:(1) There were 31 taxa of bryophytes belonging to 18 genera and 11 families, of which there were 29 taxa of mosses belonging to 16 genera and 9 families, and 2 taxa of liverworts belonging to 2 genera and 2 families. In the succession stages, the bryophyte life forms were simple, with short turfs the dominant life form, accounting for 67.7%, and the wefts accounting for 32.3%. The bryophyte species composition was monotonous, with many single-species communities, though mixed-species communities gradually increased along the succession stages. (2) The bryophyte indices were different in different natural succession stages, with the Shannon-Wiener Index, Pielou Index, and Abundance Index all lowest (0.196, 0.283, and -1.930, respectively) in the bare rock stage, and the highest (3.470, 1.281, and 2.342, respectively) in the herbosa-boscage stage. The diversity indices then gradually declined (2.128, 0.88, and 1.267, respectively) in the arbor-shrub stage. The Cody Index and Sørensen Similarity Index showed the opposite tendencies. The faster the replacement rate of species, the smaller was the similarity in the two adjacent succession stages. In the five different natural succession stages, the change in bryophyte diversity demonstrated a regular tendency, whereby the level of diversity increased at first, then decreased gradually on the karst bauxite tailing piles. Generally, the level of bryophyte diversity improved. These findings provide basic information for the ecological restoration and biodiversity conservation of the karst bauxite mining area.

     

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