| 水位埋深对菖蒲萌发和幼苗生长的影响 |
| |
| 引用本文： | 刘玉,王国祥,潘国权.水位埋深对菖蒲萌发和幼苗生长的影响[J].湖泊科学,2009,21(4):530-537. |
| |
| 作者姓名： | 刘玉 王国祥 潘国权 |
| |
| 作者单位： | 南京师范大学地理科学学院,江苏省环境演变与生态建设重点实验室,南京,210046 |
| |
| 基金项目： | 教育部科技创新工程重大项目培育基金项目，国家"十五""211 工程"重大项目 |
| |
| 摘 要： | 在直径35.5cm、深100cm的试验桶内装填厚度80cm的江沙,选择形态和节数一致的菖蒲根状茎栽种到桶内江沙中,调节并控制试验桶水位埋深,模拟研究湿地水位埋深变化对菖蒲萌发和幼苗生长的影响.为湿地生态系统保育和受损区域植被恢复提供理论依据.试验结果表明:(1)水位埋深对菖蒲萌发和幼苗生长有不同程度的影响,水位埋深为-60cm至-20cm条件下菖蒲皆能萌发,且随着水位埋深减小,萌发率降低.试验70d,-20cm试验组菖蒲萌发率达到90%,分别为-50cm和-60cm试验组的2.25和3倍.而0cm水位埋深条件下,菖蒲不萌发;(2)菖蒲幼苗叶长、叶宽和叶面积随水位埋深减小而减小.各试验组间差异极显著(P<0.01),叶片数量也随水位埋深减小而减小,-20cm和-40cm试验组极显著高于-50cm和-60cm试验组(P<0.01),且-60cm水位埋深严重影响菖蒲幼苗的存活,试验70d后菖蒲幼苗相继死亡;(3)随水位埋深减小,菖蒲幼苗叶片Ch1.a和Ch1.b含量下降,Ch1.a/b升高,类胡萝卜素(Car)含量升高,植物通过形态调节和减少色素含量来减少叶片对光能的捕获;(4)水位埋深过小导致的低土壤水分含量还使菖蒲幼苗叶片细胞膜脂过氧化加剧,细胞质膜透性迅速增大;(5)水位埋深影响菖蒲幼苗叶片快速光响应曲线,水位埋深越小,ETRmax和最小饱和光照强度越低,光响应能力越弱,
|
| 关 键 词： | 菖蒲 水位埋深 叶绿素含量 丙二醛含量 细胞质膜透性 快速光响应曲线 |
| 收稿时间： | 8/9/2008 12:00:00 AM |
| 修稿时间： | 2008/12/18 0:00:00 |
Effects of groundwater depth on germination and seedling growth of Acorus calamus |
| |
| LIU Yu,WANG Guoxiang and PAN Guoquan.Effects of groundwater depth on germination and seedling growth of Acorus calamus[J].Journal of Lake Science,2009,21(4):530-537. |
| |
| Authors: | LIU Yu WANG Guoxiang and PAN Guoquan |
| |
| Institution: | College of Geographical Science;Nanjing Normal University;Jiangsu Key Laboratory of Environmental Change and Ecological Construction;Nanjing 210046;P.R.China |
| |
| Abstract: | Effects of groundwater depth on germination and seedling growth of Acorus calamus were studied by simulating experiment. The experimental barrels (diameter of 35.5cm and depth of 100cm) were filled with fluvial sands of 80cm depth. The water was introduced directly into the bottom of the barrels to build the groundwater depths in -60cm, -50cm, -40cm, -20cm and 0cm in different five barrels respectively. The same rhizomes of A. calamus were selected and planted in each barrel. The results were as follows: (1... |
| |
| Keywords: | Acorus calamus groundwater depth chlorophyll content MDA membrane permeability rapid responded light-curves |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《湖泊科学》浏览原始摘要信息 |
| 点击此处可从《湖泊科学》下载免费的PDF全文 |
|
