| 摘要: |
| 为研究枸杞岛铜藻（Sargassum horneri）生长特性与温度变化关系，于2013年8月至2014年6月，在枸杞岛铜藻完整生命周期内，逐月采集铜藻样本。结合该时期水温变化情况，分析铜藻株高、生物量与有效积温变化关系。结果表明：（1）8月至翌年6月，铜藻株高、生物量与有效积温呈正相关关系，3—5月为生长繁盛期，5月下旬出现生长“顶点”，6月藻体出现衰老凋亡，各阶段生物量增长率（V）：V3—5月 > V5—6月 > V6—翌年3月；（2）枸杞岛铜藻完成生长发育所需有效积温约3600—3700℃·d，藻体生长进入繁盛期转折点有效积温约为2600℃·d；（3）根据铜藻生长适温范围与自然水温季节变化规律，铜藻生长过程可划分为以下4个阶段：第一适温期（7—12月）、低温期（1—2月）、第二适温期（3—5月）和高温衰亡期（6月及以后）。本文首次从有效积温角度探究铜藻生长季节特性变化情况，实验结果可为预测铜藻地理分布、藻场构建及海洋牧场规划提供理论指导。 |
| 关键词: 铜藻 有效积温 生长特性 温度 |
| DOI：10.11693/hyhz20191000197 |
| 分类号:S917.3 |
| 基金项目:现代农业产业技术体系专项，CARS-50号 |
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| EFFECT OF ANNUAL TEMPERATURE VARIATION ON GROWTH OF SARGASSUM HORNERI IN GOUQI ISLAND |
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LI Xun-Meng1, ZHANG Shou-Yu1, WANG Kai1, CHEN Liang-Ran2, CHEN Tian-Hua3
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1.College of Marine Ecology and Environment, Shanghai Ocean University, Shanghai 201306, China;2.School of Ecology and Nature Conservation, Beijing Forestry University, Beijing 100083, China;3.Zhejiang Ocean Monitoring and Forecasting Center, Hangzhou 310007, China
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| Abstract: |
| To study how temperature affect the growth performance of Sargassum horneri, we conducted a study in Gouqi Island, Zhejiang Province. S. horneri were sampled from August 2013 to June 2014 through the life cycle. Relationship between individual height and biomass and effective accumulated temperature was analyzed. Results show that during the sampling period, the biomass of algae was positively correlated with the effective accumulated temperature. The March to May was the quick growth period, the late May was the peak growth period, and the June was the senescent period. The biomass growth rate (V) in each stage was as follows: VMar—May > VMay—Jun > VJuly—Mar. The effective accumulated temperature required for the growth and development of S. horneri was about 3600—3700℃·d, of which 2600℃·d was required for the algae quick growth. The course of algae growth could be divided into four stages: the first suitable temperature period (July to December), the low temperature period (January to February), the second suitable temperature period (March to May), and the high temperature decay period (June and after). For the first time, this paper explores the growth characteristics of S. horneri from the perspective of effective accumulated temperature. The research results can provide a theoretical basis for predicting the geographical distribution of S. horneri, seaweed bed construction, and marine ranching planning. |
| Key words: Sargassum horneri effective accumulated temperature growth characteristics temperature |
