长安区不同性质土层CO2释放规律研究

Rule of CO_2 Release from Heterogeneous Soils in Chang'an Area

通过对长安双竹村夏、秋季不同性质土层CO2释放量的测定,本文研究了不同性质土层CO2释放规律及其差异。资料表明,从当日早晨到次日早晨,不同性质土层土壤CO2释放量均呈现由低到高再到低的变化规律;土壤CO2释放量与土层性质有密切关系,马兰黄土土层CO2释放量最高,其次是黏性土,释放量最低的是含砾石中细砂土;土层CO2释放量变化与气温的变化呈现负相关。

Through the observation of the CO2 release from heterogeneous soils in summer and autumn in Chang＇an areas, the rule of CO2 release from heterogeneous soils and their difference were studied. It was indicated that the CO2 release from heterogeneous soils change from low to high and then to low from the morning to the next morning. The release amount of CO2 was closely related to, the soil nature, and the release amount of CO2 from Malan loess was the highest, next was clay, the thin sandy soil which contained the broken stone was the lowest. The CO2 release from heterogeneous soils and the temperature appeared negative correlation.