螺类牧食与沉积物类型对苦草生长的影响

被引:10
作者
李宽意 [1 ]
刘正文 [1 ]
杨宏伟 [2 ]
宋晓兰 [1 ]
文明章 [3 ]
机构
[1] 中国科学院南京地理与湖泊研究所
[2] 南京大学
[3] 南京信息工程大学
关键词
螺类牧食; 沉积物类型; 苦草; 生长;
D O I
暂无
中图分类号
Q948 [植物生态学和植物地理学];
学科分类号
071012 ; 0713 ;
摘要
在室外实验条件下,研究了螺类牧食与沉积物类型对苦草生长的影响。结果表明:椭圆萝卜螺的牧食对苦草生长有显著影响,牧食损害使苦草的相对生长率明显降低、块茎数量及重量下降。沉积物类型对苦草生长也有明显影响,苦草的相对生长率在营养盐相对丰富的湖泥处理组中要远高于岸泥处理组,而根须数与块茎重量在湖泥处理组中显著低于岸泥处理组。螺类牧食与沉积物类型对苦草的各项生长指标无明显交互作用。
引用
收藏
页码:4907 / 4912
页数:6
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