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为了精确估算泥炭地生态系统碳储量,采用土壤剖面法和植被收割法,研究了青藏高原东部边缘的若尔盖3种水位状态下的泥炭地植被碳储量、土壤碳储量(0~200 cm)和生态系统碳储量。结果表明:若尔盖高原3种水位状态下泥炭地生态系统碳储量为761.56~1103.40 t·hm~(-2),平均值为976.49 t·hm~(-2);植被碳储量为13.44~15.23 t·hm~(-2),平均值为14.53 t·hm~(-2);土壤有机碳储量为748.12~1088.17 t·hm~(-2),平均值961.96 t·hm~(-2),是中国湿地土壤有机碳储量的3倍、森林土壤有机碳储量的5倍和草地土壤有机碳储量的11倍。影响泥炭地碳储量估算不确定性的因子主要为泥炭深度、土壤容重和土壤有机碳含量,加强这3种土壤因子数据信息的研究有助于精确估算若尔盖高原泥炭地生态系统碳储量。
In order to accurately estimate the carbon storage of the peatland ecosystem, the soil carbon content (0 ~ 200 cm) and the ecological capacity of the peatland under three water levels in the east of the Qinghai-Tibet Plateau were studied using soil profile method and vegetation harvesting method System carbon storage. The results showed that the carbon storage of the peat ecosystem was 761.56 ~ 1103.40 t · hm -2 with the average value of 976.49 t · hm -2 and the carbon storage of vegetation was 13.44 ~ 15.23 t · Hm -2, with an average value of 14.53 t · hm -2. Soil organic carbon storage was 748.12 ~ 1088.17 t · hm -2, with an average of 961.96 t · hm -2. It is three times of the soil organic carbon storage in China wetlands, five times of the forest soil organic carbon storage and 11 times of the grassland soil organic carbon storage. The factors influencing the estimation uncertainty of peatland carbon storage mainly are peat depth, soil bulk density and soil organic carbon content. Studying the data of these three soil factors can help to accurately estimate the ecosystem carbon storage in the peatland of the Ruoergai Plateau.