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| 基质及水位对入侵种互花米草生长的影响 | |
| 引用本文： | 邓自发,谢晓玲,王中生,安树青.基质及水位对入侵种互花米草生长的影响[J].生态学杂志,2010,29(2):256. |
| 作者姓名： | 邓自发 谢晓玲 王中生 安树青 |
| 作者单位： | 1. 南通大学生命科学学院,江苏南通,226007;南京大学生命科学学院,南京,210093 2. 南通大学生命科学学院,江苏南通,226007 3. 南京大学生命科学学院,南京,210093 |
| 基金项目： | 江苏省自然科学基金项目(BK2009154); 国家林业局公益项目(200804005); 南通大学科研基金资助项目(07Z031,08ZY001,08B12) |
| 摘 要： | 为了揭示基质和水位对互花米草种群扩张过程的影响,通过室内模拟试验分析了不同基质和地下水位对互花米草幼苗存活率、高生长和生物量及分配等表型参数的影响。结果表明:基质、水位及其交互作用对互花米草幼苗生长影响显著;基质类型和地下水位的交互作用显著影响幼苗的存活率;同种基质中地下水位的降低显著促进了幼苗根长的增加;由于不同基质持水力和营养的差异,沙中生长的幼苗随地下水位的降低地上部分表现出显著的生长抑制,而沙土和壤土中的幼苗在中等水位生长最好;沙中幼苗根状茎的长度显著低于沙土和壤土,而随水位的降低,沙土和壤土根茎长度显著下降。由此可以推论,互花米草种群扩张强度因生境而异,在沙土和壤土基质中互花米草可能表现出更强的入侵性和扩散能力。 |
| 关 键 词： | 幼苗 基质 水位 生长 互花米草 |
Effects of substrate and water level on the growth of invasive species Spartina alterniflora |
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| DENG Zi-fa,XIE Xiao-ling,WANG Zhong-sheng,AN Shu-qing.Effects of substrate and water level on the growth of invasive species Spartina alterniflora[J].Chinese Journal of Ecology,2010,29(2):256. | |
| Authors: | DENG Zi-fa XIE Xiao-ling WANG Zhong-sheng AN Shu-qing |
| Affiliation: | DENG Zi-fa1,2,XIE Xiao-ling1,WANG Zhong-sheng2,AN Shu-qing2 (1School of Life Science,Nantong University,Nantong 226007,Jiangsu,China,2School of Life Science,Nanjing University,Nanjing 210093,China). |
| Abstract: | A laboratory simulation experiment was conducted to study the effects of substrate type and water level on the expansion of invasive species Spartina alterniflora. Several phenotypic parameters of S. alternilora seedlings,such as survival rate,height growth,biomass,and biomass allocation,were determined. The results showed that substrate type,water level,and their interaction had significant effects on the S. alterniflora seedlings growth,and the interaction of substrate type and water level significantly a... |
| Keywords: | seedling substrate water level growth Spartina alterniflora |
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