| 摘要: |
| 于2009年和2010年在青岛汇泉湾用根茎棉线绑石法进行大叶藻(Zostera marina L.)移植, 并于2012年4月20日至11月19日对移植大叶藻的生长情况进行观察(包括形态学变化、密度、茎枝高度、地上生物量、底质粒径几个方面)。观察期间水温为7.8～26.1℃。结果显示, 移植底质可定性为粉砂质;移植大叶藻的有性繁殖期为2012年4～8月; 无性繁殖在秋季达到高峰; 密度在6月和9月分别高达411茎枝/m2和481茎枝/m2; 高度与地上生物量的最大值出现在6～7 份。与2009年青岛湾天然大叶藻进行比较后可以发现, 移植大叶藻的高度、地上生物量及其季节变化与天然大叶藻基本保持一致,说明移植大叶藻的生长状况良好, 同时说明根茎棉线绑石法是一种高效且实用的海草床生态恢复方法。 |
| 关键词: 海草 大叶藻(Zostera marina L.) 移植 棉线绑石法 形态 季节变化 |
| DOI： |
| 分类号: |
| 基金项目:海洋公益性行业科研专项重点项目(201305043/201005009);国家科技支撑计划项目课题(2011BAD13B06); 国家自然科学基金项目(41121064/41176140); 青岛市市南区科技发展计划项目(2009517HY) |
|
| Transplantation of eelgrass (Zostera marina L.) in Huiquan Bay using rhizomes bound to a small elongate stone with biodegradable cotton thread |
|
|
| Abstract: |
| The eelgrass (Zostera marina L.) was transplanted with a new simple method in Huiquan Bay, Qingdao, i.e several rooted shoots tied on a small elongate stone with cotton thread were planted in 2009 and 2010. From April 20 to November 19, 2012, the morphology, shoot density, shoot height, aboveground biomass and particle-size of sediment of the transplanted eelgrass were observed. The water temperature ranged from 7.8 to 26.1℃ during the observation. The results showed that the sexual reproduction of eelgrass occurred from April to August, and that the asexual reproduction occurred frequently in autumn. The mean shoot density ranged from 240 to 481 shoots/m2, with relative higher values of 411 shoots/m2 and 481 shoots/m2 in June and September, respectively. The highest values of shoot height and aboveground biomass occurred in June to July. The sediment was characterized by silt. The values and variations of shoot height and aboveground biomass were similar with those of natural eelgrass in Qingdao Bay, observed in 2009. We conclude that the transplanted eelgrass grew well, suggesting that the new method was effective and practical. |
| Key words: seagrass Zostera marina L. transplant method of tying small elongate stone with biodegradable cotton thread morphology seasonal variation |
