| 郑 海,易自成,黎俏文,骆世明,李锦开,黎华寿.多功能作物皇竹草引种的环境风险评价[J].农业环境科学学报,2014,33(2):288-297. |
| 多功能作物皇竹草引种的环境风险评价 |
| Environmental Risk Assessment of Exotic Pennisetum hydridum as a Biofuel and Forage Crop |
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| DOI：10.11654/jaes.2014.02.013 |
| 中文关键词: 皇竹草 外来物种；环境风险 管理措施 |
| 英文关键词: Pennisetum hydridum exotic plants environmental risk management measure |
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| 摘要点击次数: 2484 |
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| 中文摘要: |
| 外来热带植物皇竹草（Pennisetum hydridum）具有高光合力、高再生力和强抗旱力，而且耐刈割、高产量和富营养价值，近年作为饲料、燃料（能源植物）、工业原料和环境治理材料等在各地试种和推广。由于皇竹草具生长快、生物量大、易克隆繁殖、易扩张等生物学特性，人们对引种扩种皇竹草的生态风险十分关注。以皇竹草为材料，结合文献分析和种植调研考察，比较了皇竹草与华南典型本地杂草芒草（Miscanthus sinensi）和入侵植物飞机草（Eupatorium odoratum L.）的生态特性，并以通用的国际外来物种入侵风险评价体系，对皇竹草引种的生态风险进行了评价。结果表明皇竹草抗逆性强、生势旺盛，但不具备入侵植物的繁殖扩张、化感作用和难以自然或人工控制等生态特征；其物种入侵风险指数按“引入型的评估指标体系”评价得分为23.5， 按“存在型的评估指标体系”评价风险得分为27.5，比照入侵风险评估综合指标体系评价其风险等级为“可接受引进”；此外，通过文献分析和对我国南方及河南、内蒙古自治区等种植调研考察，迄今为止国内外均未发生皇竹草入侵为害的报道。因此，在我国发展皇竹草引起生物入侵风险的可能性极小。 |
| 英文摘要: |
| Hybrid Giant Napier（Pennisetum hydridum） was hybridized from elephant grass and African Pennisetum. It is an exotic multipurpose crop with high photosynthetic efficiency and strong drought-resistance, and has been used as an energy and forage grass. However, there is little information available about its eco-environmental risks. In this paper, environmental risks of Pennisetum were assessed by comparing Pennisetum with typical local weeds and invasive plants, based on literature analysis and planting onsite survey. The results showed that Pennisetum did have the ecological characteristics of invasive plants with invasion risk score of 23.5（by introduction-type evaluation system） and 27.5（by existence-type evaluation system）. Our results suggest that Pennisetum is little dangerous and an acceptable species to be introduced in tropical area. |
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