| 摘要: |
| 为评估我国芒属植物规模化种植的生态风险，利用前期建立的能源草生态风险评价体系，从分布特征（P1）、繁殖特征（P2）、扩散特征（P3）、遗传特征（P4）、适应特征（P5）、危害特征（P6）和被控制特征（P7）等7个决定生态风险等级的层面对芒、五节芒、荻、南荻和奇岗进行相关定性分析；在此基础上再利用数学统计法对各种芒草的生态风险进行定量分析。结果表明：芒、五节芒、荻、南荻和奇岗的生态风险值（R）依次是71、60、66、53和52分，即规模化种植的生态风险趋势为芒 > 荻 > 五节芒 > 南荻 > 奇岗；依据能源草生态风险评价体系划定的评判标准，奇岗和南荻为无生态风险的芒草种类，而五节芒、荻和芒为具有中低生态风险的芒草种类。 |
| 关键词: 生态工业植物 芒属植物 生态风险 入侵潜力 |
| DOI：10.11841/j.issn.1007-4333.2019.06.06 |
| 投稿时间：2018-07-09 |
| 基金项目:湖南省“青年百人计划”项目（5404921）；湖南农业大学第二批重大科研项目暨创新团队培育工程资助项目（540491018008） |
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| Ecological risk assessment of Miscanthus for large-scale cultivation in China |
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GUO Mengqi1, YANG Sai1, YI Zili1,2, XUE Shuai1,2
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| (1.College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha 410128, China;2.Hunan Engineering Laboratory of Miscanthus Ecological Applications, Changsha 410128, China) |
| Abstract: |
| In this study,the ecological risks for large-scale cultivation of four promising miscanthus species (Miscanthus sinensis,M.floridulus,M.sacchariflorus,M.lutarioriparius) and the European commercially used variety of Miscanthus×giganteus were quantified.The quantification procedure was conducted using formerly established ecological risk assessment system for bioenergy grasses (Hereafter referred to as ERAB system).According to the quantification procedure of ERAB system,the distribution characteristics (P1),reproductive characteristics (P2),diffusion characteristics (P3),genetic characteristics (P4) and adaptation characteristics (P5),damage characteristics (P6) and controlled features (P7) of the tested materials were reviewed and summarized firstly.The 33 evaluation indicators,which belong to the above seven characteristic groups,were assigned according to the assessment criteria defined in the ERAB system.The ecological risk score of each tested species was quantified by summing the assignments of its 33 evaluation indicators.The results showed that ecological risks of the large-scale miscanthus cultivation generally were M.sinensis > M.sacchariflorus > M.floridulus > M.lutarioriparius > M.×giganteus indicated by their ecological risk scores of 71,66,60,53 and 52,respectively.According to the risk definition criteria of the ERAB system,the M.lutarioriparius and M.×giganteus were defined as the ecological safe plant (i.e.accept for large-scale cultivation);while the M.sinensis,M.sacchariflorus,M.floridulus were defined as plants with uncertain ecological risk,indicating further deeply evaluations were required to clarify their ecological safety prior the large-scale cultivation. |
| Key words: eco-industrial plant Miscanthus ecological risk invasion potential |
