CAJ | 학술논문

以外源小球藻和岩溶区筛选出的土著小球藻为研究对象，在封闭体系中比较研究了两种不同来源小球藻对典型岩溶水中Ca2+、HCO3?的利用、藻细胞数量与其对Ca2+、HCO3?的利用率的关系和体系pH的变化。结果表明，土著小球藻利用 Ca2+、HCO3?的能力强于外源小球藻，但外源小球藻对 Ca2+的利用量高于土著小球藻，而二者对 HCO3?的利用量相同，并且外源小球藻能够以胞外 CaCO3形式产生沉淀，而土著藻则不能形成沉淀。其次两体系中pH的变化显示，两种小球藻光合作用都是先以水体中CO2为光合作用碳源，然后利用HCO3?。外源小球藻能将岩溶水中29.648%的HCO3?吸收，而土著藻能将40.625%的HCO3?通过其在食物链中的初级生产地位将岩溶碳汇转化进入到生态系统，表现为净碳汇效应。
이외원소구조화암용구사선출적토저소구조위연구대상，재봉폐체계중비교연구료량충불동래원소구조대전형암용수중Ca2+、HCO3?적이용、조세포수량여기대Ca2+、HCO3?적이용솔적관계화체계pH적변화。결과표명，토저소구조이용 Ca2+、HCO3?적능력강우외원소구조，단외원소구조대 Ca2+적이용량고우토저소구조，이이자대 HCO3?적이용량상동，병차외원소구조능구이포외 CaCO3형식산생침정，이토저조칙불능형성침정。기차량체계중pH적변화현시，량충소구조광합작용도시선이수체중CO2위광합작용탄원，연후이용HCO3?。외원소구조능장암용수중29.648%적HCO3?흡수，이토저조능장40.625%적HCO3?통과기재식물련중적초급생산지위장암용탄회전화진입도생태계통，표현위정탄회효응。
We compared the utilization of Ca2+ and HCO3? in typical karst water by exogenous chlorella and native chlorella in a closed system. Analyzed the relationship between chlorella cell numbers and the utilization rate of Ca2+and HCO3?and the variation of pH value. The results showed that the native algae had higher ability in utilizing Ca2+and HCO3? than exogenous chlorella, while exogenous chlorella had higher Ca2+ utilization amount than native algae. The utilization amounts of HCO3? of them were the same. In addition, exogenous chlorella can form CaCO3 sediment, but native can not. The variation of pH value in the closed system revealed that both of the two algae firstly utilized the dissolved carbon dioxide as photosynthesis carbon source, and then made use of HCO3?. Exogenous chlorella absorbed 29.648%HCO3?in the karst water, native algae utilized 40.625%HCO3?. As the primary producer in the food chain, the two kinds of aquatic algae transformed HCO3?and took it into the ecological system.