Values of Carbon Dioxide Emission from Different Land-use Patterns of Alpine Meadow
高寒草甸不同土地利用格局土壤CO2的释放量

The value order of carbon dioxide emission from different land use of alpine meadow was significantly with season changing.It was found that the Potentilla fruticosa shrub meadow(C,1871.40g/m2)> Kobresia humilis meadow(A,1769.63g/m2)>Degraded Potentilla fruticosa shrub meadow(D,1495.60g/m2)>Degraded Kobresia humilis meadow(B,1191.26g/m2) during growth season,A(661.46g/m2)>C(550.90g/m2)>B(502.50g/m2)>D(384.50g/m2) in rest period;and A(2431.09g/m2)>C(2422.30g/m2)>D(1880.10g/m2)>B(1694.06g/m2) for whole year,separately.This deference not only decided the soil microbial activity and soil characters,but also have the closely relationship to shortage of frozen period.