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| 螺类牧食与沉积物类型对苦草生长的影响 | |
| 引用本文： | 李宽意,刘正文,杨宏伟,宋晓兰,文明章. 螺类牧食与沉积物类型对苦草生长的影响[J]. 生态学报, 2007, 27(11): 4907-4912 |
| 作者姓名： | 李宽意 刘正文 杨宏伟 宋晓兰 文明章 |
| 作者单位： | 1. 中国科学院南京地理与湖泊研究所,南京,210008;中国科学院研究生院,北京,100039 2. 中国科学院南京地理与湖泊研究所,南京,210008;暨南大学,广州,510630 3. 南京大学,南京,210081;中国科学院南京地理与湖泊研究所,南京,210008 4. 南京信息工程大学,南京,210044 |
| 基金项目： | 国家高技术研究发展计划(863计划);中国科学院知识创新工程项目;国家重点基础研究发展计划(973计划) |
| 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。 |
| 关 键 词： | 螺类牧食 沉积物类型 苦草 生长 |
| 文章编号： | 1000-0933（2007）11-4907-06 |
| 收稿时间： | 2007-03-08 |
| 修稿时间： | 2007-03-08 |
Effects of snail herbivory and sediment type on the growth of Vallisneria spiralis |
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| LI Kuanyi,LIU Zhengwen,YANG Hongwei,SONG Xiaolan and WEN Mingzhang. Effects of snail herbivory and sediment type on the growth of Vallisneria spiralis[J]. Acta Ecologica Sinica, 2007, 27(11): 4907-4912 | |
| Authors: | LI Kuanyi LIU Zhengwen YANG Hongwei SONG Xiaolan WEN Mingzhang |
| Affiliation: | 1 Nanjing Institute of Geography & Limnology, Chinese Academy of Sciences, Nanjing 210008,China 2 Graduate School of Chinese Academy of Sciences, Beijing 100039,China 3 Jinan University, Guangzhou 510630,China 4 Nanjing University, Nanjing 210081, China 5 Nanjing University of Information Science & Technology, Nanjing 210044,China |
| Abstract: | An outdoor experiment was conducted to investigate effects of the herbivory of snail Radix swinhoei and sediment type on the growth of submerged macrophyte Vallisneria spiralis from June to August in 2006.Results showed that snail herbivory on plant tissue suppressed V.spiralis growth.Furthermore,herbivory damage resulted in a decrease in tuber number and weight.Plant growth was affected by sediment type.The relative growth rate of V.spiralis was much higher in fertile lake sediment treatment than that in infertile soil treatment.Besides,root number and tuber weight were significantly lower in lake sediment treatment than that in soil treatment.However,the interactive effects of both snail herbivory and sediment type on the growth of V.spiralis were not significant. |
| Keywords: | Radix swinhoei herbivory sediment type Vallisneria spiralis growth |
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