本文關(guān)鍵詞：青島大沽河河口濕地蘆葦?shù)纳L及生物量動態(tài)研究，由筆耕文化傳播整理發(fā)布。

青島大沽河河口濕地蘆葦?shù)纳L及生物量動態(tài)研究

The Growth and Dynamics of Biomass of Reed Phragmites australis in Wetlands of Daguhe Estuary

[1] [2] [3] [4] [5]

ZAN Xiao-Xiao,XU Bin-Duo,REN Yi-Ping,WANG Xiao-Lin,CAI Xing-Yuan（College of Fisheries,Ocean University of China,Qingdao 266003,China）

中國海洋大學水產(chǎn)學院,山東青島266003

文章摘要：根據(jù)2009年4～10月在大沽河河口濕地進行的蘆葦（Phragmites australis）調(diào)查,研究該區(qū)域蘆葦主要生長季節(jié)期間生長及生物量動態(tài)變化。結(jié)果表明：在生長季節(jié),蘆葦株高逐漸增加,10月最高達（2305.35±65.48）（平均值±標準誤差,下同）mm;植株密度呈下降趨勢,5月最高為（362.33±24.52）株.m-2,9月最低為（255.0±36.17）株.m-2;株高與植株密度二者無顯著相關(guān)性。地上部生物量月間變化較大,總體呈上升趨勢,最大值出現(xiàn)在10月,干質(zhì)量變化范圍為（37.59±13.94）～（7033.02±967.37）g.m-2。葉片、莖與葉鞘等構(gòu)件生物量總體呈上升趨勢,干質(zhì)量最大值出現(xiàn)在10月,分別為（1264.32±202.19）、（3667.58±475.22）、（1123.78±178.37）g.m-2。5～10月,蘆葦?shù)厣喜客鞴倥c非同化器官生物量之比F/C值呈降低趨勢,地上部非同化器官生物量對地上部總生物量的變化有較大貢獻。初步分析表明降水量對蘆葦?shù)厣喜可锪吭鲩L有較大影響。蘆葦?shù)叵赂鲗由锪孔兓鞠嗤?月間差異不顯著。蘆葦根冠比5～10月處于0.29～1.93范圍內(nèi)。蘆葦根冠比的變化受外界環(huán)境因素的影響,其變化與地上、地下生物量密切相關(guān)。根系生長變化與蘆葦植株自身對營養(yǎng)等生存條件獲取的自我調(diào)控有關(guān)。

Abstr：Based on the data of reed Phragmites australis from the surveys conducted in wetlands of Daguhe 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-2 in October.The average height of reed was uncorrelated with density of reed（P0.05）.During the main growth season periods,the aboveground biomass 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

文章關(guān)鍵詞：

Keyword：:wetlands of Daguhe Esturay Phragmites australis aboveground biomass underground biomass root/shoot ratio（R/S） dynamics

課題項目：國家海洋公益性行業(yè)科研專項（200805066）資助

  本文關(guān)鍵詞：青島大沽河河口濕地蘆葦?shù)纳L及生物量動態(tài)研究，，由筆耕文化傳播整理發(fā)布。