Ma Wei-Wei, Wang Hui, Huang Rong, Li Jun-Zhen, Li De-Yu
Ying Yong Sheng Tai Xue Bao. 2014 Mar;25(3):738-44.
The profile distribution and accumulation characteristics of organic carbon of four typical marshes (herbaceous peat, marsh wetland, mountain wetland, subalpine meadow) were studied in Gahai Wetlands of Gannan in July 2011. The results showed that the soil bulk densities of the four typical marshes ranged from 0.22 to 1.29 g x cm(-3). The content of soil organic carbon in the herbaceous peat was higher than in other types, with its average content of organic carbon (286. 80 g x kg(-1)) being about 2.91, 4.99, 7.31 times as much as that of the marsh wetland, mountain wetland and subalpine meadow, respectively. The average organic carbon densities were in order of herbaceous peat > subalpine meadow > marsh wetland > mountain wetland, with the highest in the 0-10 cm layer. The change of organic carbon density along the soil profile was basically in accordance with the organic carbon content in the four typical marshes, but fluctuated with soil depth. There were obviously two carbon storage layers (0-10 and 20-40 cm, respectively) in the four typical marshes. The amounts of organic carbon stored in the 0-60 cm layer of the four typical marshes were 369.46, 278.83, 276.16, 292.23 t x hm(-2), respectively. The total amount of organic carbon stored in the 0-60 cm of the four typical marshes was about 9.50 x 10(6) t.
2011年7月，对甘南尕海湿地4种典型沼泽（草本泥炭地、沼泽湿地、山地湿地、亚高山草甸）有机碳的剖面分布及累积特征进行了研究。结果表明，4种典型沼泽的土壤容重为0.22～1.29 g·cm-3。草本泥炭地土壤有机碳含量高于其他类型，其有机碳平均含量（286.80 g·kg-1）分别约为沼泽湿地、山地湿地、亚高山草甸的2.91倍、4.99倍、7.31倍。有机碳平均密度表现为草本泥炭地＞亚高山草甸＞沼泽湿地＞山地湿地，0～10 cm土层最高。4种典型沼泽有机碳密度沿土壤剖面的变化基本与有机碳含量一致，但随土层深度有波动。4种典型沼泽明显存在两个碳储量层（分别为0～10 cm和20～40 cm）。4种典型沼泽0～60 cm土层有机碳储量分别为369.46、278.83、276.16、292.23 t·hm-2。4种典型沼泽0～60 cm土层有机碳总储量约为9.50×106 t。
