板寨地下河大型水生植物调查及其固碳评价  

Large Aquatic Plants Survey and Evaluation of Carbon Sequestration of the Banzhai Underground River

作　　者：熊志斌 王万海[2] 玉屏[2] 于奭[1] XIONG Zhibin;WANG Wanhai;YU Ping;YU Shi(Institute of Karst Geology,Chinese Academy of Geological Sciences//Key Laboratory of Karst Dynamics,Ministry of Land and Resources&Guangxi,Guilin 541004,China;Guizhou MaoLan National Nature Reserve Administration Bureau,Libo 558400,China)

机构地区：[1]国土资源部//广西岩溶动力学重点实验室,中国地质科学院岩溶地质研究所,广西桂林541004 [2]贵州茂兰国家级自然保护区管理局,贵州荔波558400

出　　处：《热带地理》2018年第4期557-564,共8页Tropical Geography

基　　金：国家自然科学基金(41402324);地质调查项目(DD20160305-01);国土资源部/广西岩溶动力学重点实验室开放基金(14-A-04-02)

摘　　要：为深入研究板寨地下河流域水生植物种类及其固碳潜力,于2014―2016年在植物高生长期和生长结束期对流域内水生植物进行物种鉴定及优势水生物种确定。最终通过对优势种群开展生物量及δ13C测试,推算其固碳潜力。结果表明:1)该地下河有大型水生植物28科、35属、41种,按其经济价值来分,可食用的6种,药用的33种,观赏的20种,具有较大经济开发潜力。2)流域内黑藻(Hydrilla verticillata)、竹叶眼子菜(Potamogeton malaianus)、小眼子菜(Potamogeton pusillus)、普生轮藻(Chara vulgaris)和金鱼藻(Ceratophyllum demersum)为优势种群,其生物量依次为136.70、225.00、16.00、172.00、17.00 g/m2。3)板寨地下河水生植物光合作用的固碳能力竹叶眼子菜最大,为111.83 g C/(a·m2),小眼子菜最小,为7.95 g C/(a·m2)。4)板寨地下河水生植物利用3HCO-作用碳源的比例平均为23.21%,即板寨地下河出口至下游无机碳年通量的损失量中,约23.21%3HCO-是被水生植物固定下来,其固定的3HCO-碳量为14.39 g C/(a·m2),说明水生植物光合作用与岩溶作用相结合表现出巨大的固碳潜力。In order to further study the species and carbon sequestration potential of aquatic plants in the subterranean stream basin of the Banzhai,species identification and dominant aquatic species identification were carried out in the basin during the period of high plant growth and end of growth from 2014 to 2016.The results showed that:1)There were 28 families,35 genera and 41 species of aquatic macrophyte in this underground river.According to the economic value,33 species were edible,6 species could be used as medicine,and 20 species were ornamental,which had great economic development potential.2)Hydrilla verticillata,bamboo leaf pondweed(Potamogeton malaianus),Potamogetonpusillus(Potamogeton pusillus),Chara vulgaris(Chara vulgaris L.)and Ceratophyllum demersum were the dominant species,the biomass of them were 136.70,225.00,16.00,172.00 and 17.00 g/m^2,respectively.3)Regarding the contribution to karst carbon sink,Potamogeton malaianus made the biggest part,which was 111.83 g C/(a·m^2),while that of Potamogeton pusillus the minimum,7.95 g C/(a·m^2).4)The average utilization rate of activated carbon in the underground river aquatic plants in the Banzhai was 23.21%,about 23.21%of was fixed by aquatic plants in the annual loss of inorganic carbon from the outlet to the downstream of the Banzhai Underground River.The fixed carbon content was 14.39 gC/(a·m^2),indicating that the combination of photosynthesis and karstification of aquatic plants showed great potential for carbon sequestration.

关 键 词：水生植物 生物量 固碳评价 板寨地下河 

分 类 号：Q948.34[生物学—植物学]