中国海洋大学学报（自然科学版）2011，Vol.41Issue(11)：27-33,7.
青岛大沽河河口湿地芦苇的生长及生物量动态研究
The Growth and Dynamics of Biomass of Reed Phragmites australis in Wetlands of Daguhe Estuary
摘要
Abstract
Based on the data of reed Phragmites australis from the surveys conducted in wetlands of Da-guhe Estuary between April and October 2009, the growth and dynamics of biomass of reed in main growth periods were analyzed. The results showed that average height of reed increased gradually in growth season with the lowest value of 117. 07 mm in April and highest 2 305. 35±65. 48 mm in October. The density of reed showed a decreasing trend with the highest value of 362. 33 ± 24. 52 shoots · m-2 in May and the lowest value of 255. 0 + 36. 17 shoots · m-2in October. The average height of reed was un-correlated with density of reed (P<00. 05). During the main growth season periods, the aboveground bio-mass of reed showed overall increasing tendency which reached the maximum point in October and exhibited evident changes monthly, ranging from between (37. 59 + 13. 94) to (7 033. 02±967. 37) g · m-2 for dry weight. Biomass of leaves, stem and sheath of reed increased generally from April to October. The dry weight was the highest in October at about (1 264. 32±202. 19) g · m-2, (3 667. 58±475. 22) g · m-2, (1123.78+178. 37) g · m-2 for leaves, stem and sheath, respectively. F/C decreased gradually from April to October. Aboveground biomass of non-photosynthetic organs made a great contribution to the changes of total aboveground biomass. Preliminary study showed that rainfall had great positive effects on growth of aboveground biomass of reed in the wetlands of Daguhe Estuary. Underground biomass of each depth level showed a similar trend with no significant difference between months during the study period. The root/shoot ratio (R/S) of reed ranged between 0. 29 and 1. 93 from May to October. R/S was affected by environmental factors and was closely associated with variations in aboveground biomass and underground biomass. The growth of root was related to the self-regulation of reed, which could obtain survival conditions such as nutrition.关键词
大沽河河口湿地/芦苇/地上生物量/地下生物量/根冠比/动态Key words
wetlands of Daguhe Esturay/ Phragmites australis/ aboveground biomass/ underground biomass/ root/shoot ratio (R/S)/ dynamics分类
农业科技引用本文复制引用
昝肖肖,徐宾铎,任一平,王小林,蔡星媛..青岛大沽河河口湿地芦苇的生长及生物量动态研究[J].中国海洋大学学报（自然科学版）,2011,41(11):27-33,7.基金项目
国家海洋公益性行业科研专项(200805066)资助 （200805066）
