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河岸美人蕉和香根草的生长繁育及其腐烂规律

李睿华1,2;管运涛1,3,4;何苗1;胡洪营1;蒋展鹏1   

  1. 1清华大学环境科学与工程系, 北京 100084;
    2南京大学环境学院环境工程系, 南京 210093;
    3清华大学深圳研究生院,广东深圳 518055;
    4清华-京大环境技术联合研究和教育中心, 广东深圳 518055
  • 收稿日期:2006-06-06 修回日期:1900-01-01 出版日期:2007-03-15 发布日期:2007-03-15

Growth and decay patterns of riparian Canna glauca and Vetiveria zizanioides

LI Rui-hua1,2; GUAN Yun-tao1,3,4; HE Miao1; HU Hong-ying1; JIANG Zhan-peng1   

  1. 1Department of Environmental Science and Engineering, Tsinghua University, Beijing 100084, China;
    2School of Environment, Nanjing University, Nanjing 210093, China;
    3Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, Guangdong, China;
    4Cooperative Research and Education Center for Environmental Technology, Kyoto University & Tsinghua University, Shenzhen 518055, Guangdong, China
  • Received:2006-06-06 Revised:1900-01-01 Online:2007-03-15 Published:2007-03-15

摘要: 以河岸带中的美人蕉、香根草为对象,研究了河岸带生态恢复过程中植物的生长及其作用。结果表明:美人蕉和香根草二者对水深的耐受性均不强,不适合在深水中生长与繁殖;与美人蕉相比,香根草对水深的耐受性更强;美人蕉不适合在水深>20 cm的水域生长;美人蕉地上的生物量比地下高27.5%,香根草地上的生物量比地下高79%;通过收割美人蕉分别带走美人蕉所固定的全部氮、磷的59%和55%,收割香根草带走香根草所固定的全部氮和磷的57%;经过130 d的浸泡,美人蕉、香根草质量损失率分别为31.89%和19.8%,全氮、全磷的损失美人蕉分别为49.43%和77.30%,香根草分别为47.54%和86.06%;植物浸泡释放有机物、氮和磷,但水中COD、NH+4-N和TP浓度并不持续增加。

关键词: 基因工程微生物, 生态学, 环境

Abstract: The study on the growth and decay of Canna glauca and Vetiveria zizanioides in a pilot scale trial of riparian ecosystem restoration showed that both C. glauca and V. zizanioides didn’t have strong endurance in deep water. C. glauca did not adapt to the water body in a depth more than 20 cm, but V. zizanioides could grow in deeper water depth. The aboveground biomass of C. glauca and V. zizanioides was 27.5% and 79% more than their underground biomass, and the harvest of their aboveground biomass could remove 59% and 57%of total N and 55% and 57% of total P, respectively. After dunked in water for 130 days, the aboveground part of C. glauca lost 31.89% of its dry mass, 49.43% of total N, and 77.30% of total P, while that of V. zizanioides lost 19.8% of its dry mass, 47.54% of total N, and 86.06% of total P. The dunking of the plants induced the release of organic materials, N and P, but the concentrations of COD, NH+4-N and TP in water didn’t have a persistent increase.

Key words: Genetically Engineered Microorganism, Ecology, Environment