多功能作物皇竹草引种的环境风险评价

郑 海; 易自成; 黎俏文; 骆世明; 李锦开; 黎华寿

Environmental Risk Assessment of Exotic Pennisetum hydridum as a Biofuel and Forage Crop

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KeyWord:Pennisetum hydridum; exotic plants; environmental risk; management measure

Author Name	Affiliation
ZHENG Hai	Key Laboratory of Agro-Environment in the Tropics，Ministry of Agriculture of China， South China Agricultural University， Guangzhou 510642， China Key Laboratory of Agroecology and Rural Environment of Guangdong Regular Higher Education Institutions， Guangzhou 510642， China
YI Zi-cheng	Key Laboratory of Agro-Environment in the Tropics，Ministry of Agriculture of China， South China Agricultural University， Guangzhou 510642， China Key Laboratory of Agroecology and Rural Environment of Guangdong Regular Higher Education Institutions， Guangzhou 510642， China
LI Qiao-wen	Key Laboratory of Agro-Environment in the Tropics，Ministry of Agriculture of China， South China Agricultural University， Guangzhou 510642， China Key Laboratory of Agroecology and Rural Environment of Guangdong Regular Higher Education Institutions， Guangzhou 510642， China
LUO Shi-ming	Key Laboratory of Agro-Environment in the Tropics，Ministry of Agriculture of China， South China Agricultural University， Guangzhou 510642， China Key Laboratory of Agroecology and Rural Environment of Guangdong Regular Higher Education Institutions， Guangzhou 510642， China
LI Jin-kai	Key Laboratory of Agro-Environment in the Tropics，Ministry of Agriculture of China， South China Agricultural University， Guangzhou 510642， China Key Laboratory of Agroecology and Rural Environment of Guangdong Regular Higher Education Institutions， Guangzhou 510642， China
LI Hua-shou	Key Laboratory of Agro-Environment in the Tropics，Ministry of Agriculture of China， South China Agricultural University， Guangzhou 510642， China Key Laboratory of Agroecology and Rural Environment of Guangdong Regular Higher Education Institutions， Guangzhou 510642， China

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Abstract:

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.