新疆额尔齐斯河流域典型地区优势种灌木的热值
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国家自然科学基金项目“干旱区灌木地景观地理学研究”(41171157)


Caloric Values of Dominant Plants in Typical Areas of Irtysh River Watershed in Xinjiang Region
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    [目的] 分析额尔齐斯河流域典型地区植物种类、器官和物种多样性对植物热值的影响及其相关性,为额尔齐斯河流域植被的生态恢复及生物多样性保护提供科学依据。[方法] 通过对额尔齐斯河流域典型地区主要灌木群落进行调查,测定优势种灌木热值。[结果] 研究区优势种灌木全株热值范围为15.20(心叶驼绒藜)~19.60 MJ/kg(圆叶桦),平均值为17.32 MJ/kg,该值与全球陆生植物平均热值相近;优势种灌木的全株热值顺序为:圆叶桦(Betula rotundifolia) > 金丝桃叶绣线菊(Spiraea hypericifolia) > 欧亚圆柏(Juniperus Sabina) > 西伯利亚刺柏(Juniperus sibirica) > 欧亚绣线菊(Spiraea media) > 金露梅(Potentilla fruticosa) > 尖刺蔷薇(Rosa oxyacantha) > 苦豆子(Sophora alopecuroides) > 淡枝沙拐枣(Calligonum leucocladum) > 驼绒藜(Krascheninnikovia ceratoides) > 红果沙拐枣(Calligonum rubicundum) > 柽柳(Tamarix chinensis) > 梭梭(Haloxylon ammodendron) > 心叶驼绒藜(Krascheninnikovia ewersmannia);热值与物种多样性指数、丰富度指数和均匀度指数呈正相关,与优势度指数呈负相关,但显著性非常差;研究区优势种灌木热值高于或与当前主要的生物质原材料相近。[结论] 额尔齐斯河流域典型地区优势种的植物热值较高,具有作为能源植物的潜力,可以为植被恢复和水土保持的先锋植物的选择参考,优势种的热值受植物种类、器官的影响,热值与物种多样性相关性差。

    Abstract:

    [Objective] To understand dominant shrub caloric value characteristics and study relationship between caloric value and species diversity index, in order to provide scientific basis for vegetation ecological restoration and biodiversity protection in typical areas of the Irtysh river watershed in Xinjiang Uygur Autonomous Region.[Methods] We determined the caloric value, calculated the diversity index of dominant species and analyzed the correlation between calorific value and diversity index.[Results] The caloric value ranged from 15.20 to 19.60 MJ/kg across all species, with a mean value of 17.32 MJ/kg, which is close to that of worldwide terrestrial plants. The caloric values of the dominant shrubs were in an order of Betula rotundifolia > Spiraea hypericifolia > Juniperus Sabina > Juniperus sibirica > Spiraea media > Potentilla fruticosa > Rosa oxyacantha > Sophora alopecuroides > Calligonum leucocladum > Krascheninnikovia ceratoides > Calligonum rubicundum > Tamarix chinensis > Haloxylon ammodendron > Krascheninnikovia ewersmannia. Calorific value was positively correlated with species diversity index, richness index and evenness index, and negatively correlated with dominance index, but not significantly. The calorific value of the dominant species in the study area is higher than that of the primary biomass raw material, which indicates that the shrub has a high calorific value.[Conclusion] The calorific value of dominant species of plants is higher, and has the potential as an energy plant. The dominant species can be used as a reference of pioneer plants for the vegetation restoration and soil and water conservation. The calorific value of dominant species is influenced by plant species and organs, and the correlation between caloric value and species diversity is poor.

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张和钰,周华荣,叶琴,温彬.新疆额尔齐斯河流域典型地区优势种灌木的热值[J].水土保持通报,2016,36(5):299-305,311

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  • 收稿日期:2015-11-12
  • 最后修改日期:2016-02-19
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  • 在线发布日期: 2016-11-22
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