论文部分内容阅读
对桂林岩溶试验场岩溶洼地生态系统中大气CO_2动态的昼夜观测结果说明,岩溶洼地对大气CO_2具有一定的调蓄作用,并促进岩溶发育;植被的光合呼吸作用是制约大气CO_2日动态直接的因素,而土壤CO_2向大气的排放居次要地位。CO_2是岩溶作用重要的驱动力,也是全球变化研究中关注的焦点。碳酸盐岩溶蚀回收大气CO_2的关键是近地面CO_2和水的动态。本文有助于从CO_2动态变化的角度阐明碳酸盐岩溶蚀回收大气CO_2的机理,将为岩溶动力系统和全球碳循环研究提供新的线索。
The day and night atmospheric CO 2 dynamics in the Karst depressions ecosystem in Guilin Karst Experimental Site indicate that the karst depressions have a certain role in regulating and controlling atmospheric CO 2 and promote the development of karst. The photosynthetic respiration of vegetation is the main factor controlling atmospheric CO 2 daily activity , While soil CO 2 emissions to the atmosphere at a secondary position. CO_2 is an important driving force for karstification and also a focus of attention in the study of global change. Carbonate rock dissolution The key to recovery of atmospheric CO 2 is the dynamics of near-surface CO 2 and water. This paper is helpful to elucidate the mechanism of CO2 recovery from carbonate rock dissolution from the perspective of the dynamic change of CO2 and will provide new clues for the study of karst dynamic system and global carbon cycle.