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野外监测土壤CO2释放结果表明:土壤CO2释放量晴天高于雨天;洼地、垭口土壤CO2释放量高于坡地土壤CO2释放量;试验场土壤CO2年释放量在1057.8t(1.763kgm-2),与552.6t(0,921kgm-2)之间,估算值为810.0t(1.35kgm-2)。野外溶蚀试验结果表明:试验场岩上作用过程年吸收CO2量为13.08t;岩溶系统年吸收CO2量为61.73t。土壤是温室气体(CO2)的重要贡献者,岩、土、水系统是环境变化的缓冲系统,植树造林(石山改造)是改善岩溶地区生态环境的决定性举措。
Soil CO2 emission from the field monitoring showed that the soil CO2 emission was higher than that of the rainy days in sunny days; the CO2 emission of the soil in the depression and the landshed was higher than that of the soil in the sloping fields; and the annual CO2 emission in the test site was 1057.8t (1.763kgm-2) , And 552.6 t (0,921 kgm-2), an estimated value of 810.0 t (1.35 kgm-2). The results of field corrosion test show that the amount of CO2 absorbed annually by the rock in the test site is 13.08t and that of karst system is 61.73t. Soil is an important contributor to greenhouse gases (CO2). Rock, soil and water systems are buffer systems for environmental change. Afforestation (rebuilding of rock formations) is a decisive move to improve the ecological environment in karst areas.