| 紫穗狼尾草和狗牙根茎叶水文生态效应比较 |
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| 引用本文： | 代会平,向佐湘,郭君,杜浩,曾凡湘.紫穗狼尾草和狗牙根茎叶水文生态效应比较[J].草业科学,2009,26(2):107-113. |
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| 作者姓名： | 代会平 向佐湘 郭君 杜浩 曾凡湘 |
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| 作者单位： | 湖南农业大学农学院草业科学系,湖南,长沙,410128;湖南农业大学农学院草业科学系,湖南,长沙,410128;湖南农业大学农学院草业科学系,湖南,长沙,410128;湖南农业大学农学院草业科学系,湖南,长沙,410128;湖南农业大学农学院草业科学系,湖南,长沙,410128 |
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| 摘 要： | 研究了紫穗狼尾草Pennisetum alopecuroides地上部的生长状况、水文效应和生态效应。结果表明，紫穗狼尾草的成坪速度、成坪时间、草层高度和地上生物量均明显优于狗牙根Cynodon dactylon；其茎叶最大截留率45.35%，最大截留量5.12 mm，均高于狗牙根；其枯落物有效蓄水率304.88%，有效蓄水量0.19 mm，均低于狗牙根；其茎叶覆盖对降低地表温度和保持土壤水分更为明显、有效。
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| 关 键 词： | 紫穗狼尾草 狗牙根 茎叶 枯落物 水文生态效应 |
Comparative study on hydrological and ecological effects of stems and leave of wild Pennisetum alopecuroides and Cynodon dactylon |
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| DAI Hui-ping,XIANG Zuo-xiang,GUO Jun,Du Hao,ZENG Fan-xiang.Comparative study on hydrological and ecological effects of stems and leave of wild Pennisetum alopecuroides and Cynodon dactylon[J].Pratacultural Science,2009,26(2):107-113. |
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| Authors: | DAI Hui-ping XIANG Zuo-xiang GUO Jun Du Hao ZENG Fan-xiang |
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| Institution: | Grassland Science Department;College of Agronomy;Hunan Agricultural University;Changsha 410128;China |
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| Abstract: | This paper studied growth condition,hydrological and ecological effects of above ground part of wild Pennisetum alopecuroides and Cynodon dactylon.Results showed that wild P.alopecuroides was evidently better than C.dactylon(CK) in stand formation speed,time,height and above ground biomass;the maximum interception rate and amount of wild P.alopecuroides were 45.35% and 5.12 mm,higher than the control;the effective retaining water rate and amount of litter layer of wild P.alopecuroides were 304.88% and 0.19 ... |
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| Keywords: | Pennisetum alopecuroides Cynodon dactylon stems and leaves litter hydrological and ecological effects |
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