Utilization of Dissolved Inorganic Carbon by Hydrilla verticillata in Karst Water and Its Growth of the Response
HU Gang
WANG Pei
CAO Jianhua
ZHANG Chunlai
MO Biqin
Abstract：The ability in dissolved inorganic carbon (DIC) utilization and its growth by Hydrilla verticillata grown in closed systems was investigated in the laboratory.Experimental data showed that the free CO2,HCO3-and Ca2+ content reduced in karst water,and the dissolved oxygen content increased.Experimental results indicate that Hydrilla verticillata not only uses carbon dioxide,but also can make use of HCO3-as inorganic carbon source for photosynthesis,about 29.27％ of HCO3-and 33.34％ of Ca2+ in karst water were used by Hydrilla verticillata.Compared with the configuration of the nutrient solution,more Hydrilla's branches and rhizoids in karst water,as well as the biomass,promote its growth.The fertilization effect is shown in the karst water.
Keywords：HCO3-Hydrilla verticillatasubmerged plantcarbon sinkkarst water
Publication Date：2016-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 34-37 )