【摘要】：海南島土壤有機(jī)碳研究工作多集中在森林土壤,而灌叢土壤尚未引起足夠重視。本文以海南島24個灌叢樣地的72個土壤剖面為研究對象,分析其有機(jī)碳含量、有機(jī)碳密度及其碳儲量,以期揭示海南島灌叢土壤有機(jī)碳的分布特征,并初步估算海南島灌叢土壤的有機(jī)碳儲量,為評價海南島灌叢的重要生態(tài)價值提供理論依據(jù)。結(jié)果表明:海南島灌叢土壤平均有機(jī)碳含量為(6.20±0.61)g/kg,平均土壤有機(jī)碳密度為5.94 kg/m~2;土壤有機(jī)碳含量及各土層統(tǒng)一到10 cm厚度的平均有機(jī)碳密度隨土壤深度的增加而減少;海南島灌叢土壤(100 cm)的有機(jī)碳儲量約為1.48×10~7t。其中,土壤表層(0~30 cm)與(0~50 cm)的貢獻(xiàn)率分別為46.15%和65.28%,與其它類型土壤一致。
[Abstract]:Most of the research work on soil organic carbon in Hainan Island is concentrated in forest soil, but thicket soil has not been paid enough attention to. In this paper, 72 soil profiles of 24 scrub plots in Hainan Island were studied, and their organic carbon content, organic carbon density and carbon storage were analyzed in order to reveal the distribution characteristics of soil organic carbon in Hainan Island, and to estimate the organic carbon storage in Hainan Island thicket soil, which provided a theoretical basis for evaluating the important ecological value of Hainan Island scrub. The results showed that the average organic carbon content of thicket soil in Hainan Island was (6.20 鹵0.61) g / kg, the average soil organic carbon density was 5.94 kg/m~2; soil organic carbon content and the average organic carbon density of each soil layer unified to 10 cm decreased with the increase of soil depth, and the organic carbon storage of Hainan Island thicket soil (100 cm) was about 1.48 脳 10 ~ 7t / kg / kg, respectively. The contribution rates of soil surface layer (0 鈮，

本文編號：2519351