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当前位置: 首页 > 文章 > 长江口湿地海三棱藨草(Scirpus mariqueter)的储碳、固碳功能研究——以崇明东滩为例 农业环境科学学报 2007,26 (01) 360-363
Position: Home > Articles > Carbon Storage and Fixation Function of Scirpus mariqueter in Changjiang River Estuary:A Case Study of Chongming Dongtan Wetland Journal of Agro-Environment Science 2007,26 (01) 360-363

长江口湿地海三棱藨草(Scirpus mariqueter)的储碳、固碳功能研究——以崇明东滩为例

作  者：
梅雪英;张修峰
单  位：
暨南大学水生生物研究所;华东师范大学地理系
关键词：
长江口;海三棱藨草;储碳;固碳;功能
摘  要：
湿地生态系统具有很强的储碳、固碳能力,在全球碳循环中占有重要地位。为了解长江口湿地海三棱藨草(Scirpusmariqueter)的储碳、固碳情况,以崇明东滩为研究地点,通过实地调研与实验室测定相结合的方法,研究了长江口湿地海三棱藨草的现存生物量和初级生产,并根据光合作用原理,测算了其碳储量,固碳能力,进而从光能利用率的角度,探讨了其固碳潜力。结果得出:长江口湿地海三棱藨草的现存碳储量为0.34kg·m-2～0.73kg·m-2,平均0.51kg·m-2;且植被地下部分的生物现存量小于地上部分,地下/地上部分生物量比率0.31,地上部分碳储量是地下部分的3倍多;其固碳能力为0.36～1.11kg·m-2·a-1,是全国陆地植被平均固碳能力的73%～227%;全球植被平均固碳能力的88%～271%。与中国不同生态系统的固碳能力相比高于湖泊、城市、河流等生态系统类型,而低于相同植被覆盖度条件下的森林生态系统。根据光能利用率计算公式,长江口湿地海三棱藨草的光能利用率只有0.3%～0.9%,若提高到5%～6%,则固碳能力比目前提高6.74～17.25倍,达6.21～7.48kg·m-2·a-1,因此,长江口湿地海三棱藨草的固碳能力可进一步提高,固碳潜力很大。
译  名：
Carbon Storage and Fixation Function of Scirpus mariqueter in Changjiang River Estuary:A Case Study of Chongming Dongtan Wetland
作  者：
MEI Xue-ying1,ZHANG Xiu-feng2(1.Department of Geography,East China Normal University,Shanghai 200062,China;2.Institute of Hydrobiology,Jinan University,Guangzhou 510632,China)
关键词：
Changjiang River estuary;Scirpus mariqueter;carbon storage;carbon fixation;function
摘  要：
Wetland ecosystem has strong ability of carbon storage,carbon fixation and plays an important role in the global carbon cycle.To understand the carbon storage and fixation of Scirpus mariqueter in the wetland of Changjiang River estuary,biomass and net primary production of S.mariqueter was investigated on the spot and measured in laboratory,then according to the theory of photosynthesis,the carbon storage and carbon fixation of S.mariqueter in the wetland was estimated.Potential carbon fixation and carbon sequestration of the vegetation was also discussed according to light efficiency.The carbon storage of S.mariqueter in the wetland was 0.34~0.73 kg·m-2,averaged 0.51 kg·m-2.Ratio of underground to aboveground biomass was about 0.31,so the carbon storage in shoot was nearly 3 times in root.The carbon fixation of the wetland was 0.36~1.11 kg·m-2 per year respectively,being 0.73~2.27 times and 0.88~2.71 times of average carbon fixation of terrestrial vegetation in China and the world respectively.The carbon fixation ability of S.mariqueter was much stronger than that of lake,city and river ecosystems,but less than forest ecosystem.According to the formula of light efficiency,it was still low,only 0.3%～0.9%.If the light efficiency were improved to be 5%~6%,the maximum in theory,the carbon fixation ability of the S.mariqueter in the wetland would increase 6.74~17.25 times and reached 6.21~7.48 kg·m-2 per year,the carbon storage ability of the S.mariqueter in Changjiang River estuary could be improved further and the potential carbon fixation would be very huge.

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