Zhi Jun-Jun, Jing Chang-Wei, Zhang Cao, Wu Jia-Ping, Ni Zhi-Hua, Chen Hong-Jin, Xu Jin
College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China.
Ying Yong Sheng Tai Xue Bao. 2013 Mar;24(3):683-9.
As an important component of the carbon pool of terrestrial ecosystem, soil carbon pool plays a key role in the studies of greenhouse effect and global change. By using a 1:50000 soil database, the organic carbon density in the 0-100 cm layer of 277 soil species in Zhejiang Province was estimated, and the soil organic carbon (SOC) density and storage in the whole Province as well as the spatial distribution of the SOC density and storage in the main soil types of the Province were analyzed. In the whole Province, the SOC density ranged from 5 kg.m-2 to 10 kg.m-2. Among the main soil types in the Province, humic mountain yellow soil had the highest SOC density (52.80 kg.m-2), whereas fluvio-sand ridge soil had the lowest one (1.82 kg.m-2). Red soil and paddy soil had the largest SOC storages, with the sum accounting for 63.8% of the total SOC storage in the Province. The total area of the soils in the Province was 100784.19 km2, the estimated SOC storage was 875. 42 x 10(6) t, and the estimated SOC density was averagely 8.69 kg.m-2. The analysis with the superposition digital elevation model showed that the SOC density presented an obvious variation trend with the changes of elevation, slope gradient, and aspect.
土壤碳库作为陆地生态系统碳库的重要组成部分，在温室效应和全球变化研究中起着关键作用。利用1:50000土壤数据库，估算了浙江省277种土壤类型0-100厘米土层的有机碳密度，并分析了全省土壤有机碳（SOC）密度和储量以及主要土壤类型SOC密度和储量的空间分布。全省SOC密度范围为5kg·m-2至10kg·m-2。在该省主要土壤类型中，腐殖质山地黄壤的SOC密度最高（52.80kg·m-2），而河砂质土的SOC密度最低（1.82kg·m-2）。红壤和水稻土的SOC储量最大，两者之和占全省SOC总储量的63.8%。全省土壤总面积为100784.19平方公里，估算的SOC储量为875.42×106吨，估算的SOC密度平均为8.69kg·m-2。叠加数字高程模型分析表明，SOC密度随海拔、坡度和坡向的变化呈现明显的变化趋势。
