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    袁振, 魏松坡, 贾黎明, 张亚雄, 刘龙龙, 刘正立. 河北平山片麻岩山区微地形植物群落异质性[J]. 北京林业大学学报, 2017, 39(2): 49-57. DOI: 10.13332/j.1000-1522.20160277
    引用本文: 袁振, 魏松坡, 贾黎明, 张亚雄, 刘龙龙, 刘正立. 河北平山片麻岩山区微地形植物群落异质性[J]. 北京林业大学学报, 2017, 39(2): 49-57. DOI: 10.13332/j.1000-1522.20160277
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    YUAN Zhen, WEI Song-po, JIA Li-ming, ZHANG Ya-xiong, LIU Long-long, LIU Zheng-li. Differentiation of vegetation characteristics on micro-topography in gneiss mountainous area of Pingshan County, Hebei Province of northern China[J]. Journal of Beijing Forestry University, 2017, 39(2): 49-57. DOI: 10.13332/j.1000-1522.20160277
    Citation: YUAN Zhen, WEI Song-po, JIA Li-ming, ZHANG Ya-xiong, LIU Long-long, LIU Zheng-li. Differentiation of vegetation characteristics on micro-topography in gneiss mountainous area of Pingshan County, Hebei Province of northern China[J]. Journal of Beijing Forestry University, 2017, 39(2): 49-57. DOI: 10.13332/j.1000-1522.20160277
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    河北平山片麻岩山区微地形植物群落异质性

    Differentiation of vegetation characteristics on micro-topography in gneiss mountainous area of Pingshan County, Hebei Province of northern China

      摘要
    • 摘要: 微地形是导致植物群落特征产生差异的主要地形因子，探讨不同微地形对植物群落特征的影响，对于困难立地植被的恢复与重建具有重要意义。本文以河北省平山县片麻岩山区内的微地形及原状坡的植物群落调查数据为基础，分析了坡顶、塌陷、巨石背阴、缓台、陡坎、谷坡和U形沟7种微地形的植物群落特征及其与原状坡的差异，为片麻岩山区植被的恢复提供参考依据。结果表明：微地形与原状坡在植物群落数量特征方面存在明显差异，微地形植被平均高、盖度和生物量多优于原状坡(33.64 cm、59.61%、291.79 g/m2)，其中以U形沟(49.12 cm、78.02%、574.84 g/m2)、塌陷(50.94 cm、74.81%、570.50 g/m2)最为显著，陡坎(30.65 cm、62.49%、89.13 g/m2)和坡顶(28.73 cm、52.67%、78.36 g/m2)较差。植物群落多样性方面，在各个微地形及原状坡中，谷坡与原状坡植物群落多样性特征相似，物种较少，多样性指数较高，分布较均匀；缓台和U形沟植物群落的多样性指数最优，且这两种微地形物种丰富且分布均匀；塌陷、巨石背阴、坡顶属于单优势种群落，物种种类少且分布不均匀，优势种的优势地位突出；陡坎虽然物种丰富，但是多样性指数较低，而且大都是伴生种或偶见种，且分布最不均匀。因此从植物群落数量特征及多样性的角度看，U形沟、塌陷、缓台是最有利于植被生长的微地形，是片麻岩山区进行植被恢复的较好选择。

       

      Abstract: Micro-topography is a main factor inducing the differences in characteristics of plant community. It is significant to explore the impacts of micro-topography on characteristics of plant community for vegetation restoration and rebuilding in difficult site. Based on the investigation data of vegetation in gneiss mountainous area in Pingshan County of Hebei Province of northern China, this paper analyzes the differences in characteristics of plant community among seven micro-topographies, including slope top, collapse, huge stone shadow, platform, scarp, brae and U-gully, with the undisturbed slope as control, aiming at supplying reference for the revegetation of gneiss mountainous area. The results showed that there existed significant differences in the quantitative characteristics of plant community on the seven micro-topographies and the undisturbed slope. The height, coverage and biomass of the plant community on most of the micro-topographies were better than those on the undisturbed slope (33.64 cm, 59.61%, 291.79 g/m2), at the same time, those indexes were best on U-gully (49.12 cm, 78.02%, 574.84 g/m2) and collapse (50.94 cm, 74.81%, 570.50 g/m2), and worst on scarp (30.65 cm, 62.49%, 89.13 g/m2) and slope top (28.73 cm, 52.67%, 78.36 g/m2). In vegetation diversity of plant community, brae had similar diversity characteristics as the undisturbed slope, they both had fewer species, but higher in diversity indexes and evenness. On account of the abundant species and the higher diversity indexes and evenness, the conditions of vegetation diversity on platform and U-gully were the best. Species on collapse, huge stone shadow and slope top were fewer and unequally-distributed. On these micro-topographies, the status of dominant species was prominent, and existed single dominant population. Although there were abundant species on scarp, the diversity indexes and evenness were low, most of the species were occasional or accompanying. Therefore, for the quantitative characteristics of plant community and vegetation diversity, U-gully, collapse and platform were the better choices for revegetation in gneiss mountainous area.

       

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