长江口九段沙盐沼湿地芦苇和互花米草生物量及碳储量  

Biomass and carbon storage of Phragmites australis and Spartina alterniflora in Jiuduan Shoal Wetland of Yangtze Estuary, East China

作　　者：刘钰[1] 李秀珍[1] 闫中正[1] 陈秀芝 何彦龙[1] 郭文永[1] 孙培英[1] 

机构地区：[1]华东师范大学河口海岸学国家重点实验室,上海200062 [2]上海九段沙湿地国家级自然保护区,上海200135

出　　处：《应用生态学报》2013年第8期2129-2134,共6页Chinese Journal of Applied Ecology

基　　金：上海市科委科技攻关计划项目(10dz1200802);国家自然科学基金项目(41271065);科技部全球变化研究国家重大科学研究计划项目(2010CB951203);科技部中荷战略科学联盟计划项目(2008DFB90240)资助

摘　　要：2010—2012年,采用野外采样和实验室测定相结合的方法,研究了长江口九段沙芦苇、互花米草植被带生物量的季节动态和碳储存能力.结果表明:两种植物生物部分(地上、地下、枯立物生物量之和)的有机碳储量均为秋季最高、春季最低.地上活体互花米草单位面积的平均碳储量(445.81g·m-2)高于芦苇(285.52g·m-2),芦苇枯立物的平均碳储量(203.15g·m-2)低于互花米草(315.28g·m-2),但芦苇区土壤表层(0～30cm)有机碳储量(1048.62g·m-2)约为互花米草区(583.33g·m-2)的2倍.芦苇区的碳储存能力(3212.96g·m-2)总体上高于互花米草区(2730.42g·m-2).表明保护芦苇群落对于维护盐沼湿地的碳汇功能具有重要意义.By the methods of field survey and laboratory analysis, an investigation was conducted on the seasonal dynamics of biomass and carbon storage of Phragmites australis and Spartina alterniflora dominated vegetation belts in the Jiuduan Shoal Wetland of Yangtze Estuary, East China in 2010-2012. The organic carbon storage of the biomass （including aboveground part, underground part, and standing litter） of the two plants was the highest in autumn and the lowest in spring. The average carbon storage of the biomass of S. alterniflora per unit area （445.81 g·m-2） was much higher than that of P. australis （285.52 g·m-2）, and the average carbon storage of the standing litter of S. alterniflora （315.28 g·m-2） was also higher than that of P. australis （203.15 g·m-2）. However, the organic carbon storage in the surface soil （0-30 cm） under P. australis community （1048.62 g·m-2） was almost as twice times as that under S. alterniflora community （583.33 g·m-2）. Overall, the carbon accumulation ability of P. australis community （3212.96 g·m-2） was stronger than that of the S. alterniflora community （2730.42 g·m-2）. Therefore, it is of significance to protect the P. australis community in terms of carbon sequestration at the salt marsh.

关 键 词：芦苇 互花米草 枯立物 土壤 碳储量 九段沙湿地 

分 类 号：Q948[生物学—植物学]