北京温榆河流域周边河岸带景观结构与土壤碳储量响应Structure and Soil Carbon Reserves Response of Riparian Zone Landscape Surrounding Beijing Wenyu River Basin
孙荣凯;陈智慧;
摘要(Abstract)：
[目的]研究北京温榆河流域周边河岸带景观结构与土壤碳储量响应,为岸边带生态系统的恢复重建提供科学依据。[方法]以位于北京城郊区的温榆河昌平段为研究区,分别采集岸边带自然植被、半自然植被、人工植被3种植被类型0~20、20~40、40~60 cm的土层土样,研究土壤有机碳垂直分布特征。[结果]0~20 cm土壤有机碳密度为1.842 0 kg/m~2,20~40 cm为1.691 2 kg/m~2,40~60 cm为1.460 2 kg/m~2。自然植被0~20 cm土壤有机碳密度为2.326 4 kg/m~2,20~40 cm为2.413 3 kg/m~2,40~60 cm为1.377 4 kg/m~2;半自然植被0~20 cm土壤有机碳密度为1.673 6 kg/m~2,20~40 cm为1.545 1 kg/m~2,40~60 cm为1.360 4 kg/m~2;人工植被0~20 cm土壤有机碳密度为1.751 5 kg/m~2,20~40 cm为1.430 6 kg/m~2,40~60 cm为1.394 7 kg/m~2。[结论]温榆河河岸带土壤0~60 cm的碳含量随着土壤深度的增加呈垂直变化,各土层土壤碳含量从大到小依次为0~20、20~40、40~60 cm;各植被类型的土壤碳含量由大到小依次为自然植被、半自然植被、人工植被。
关键词(KeyWords)： 河边带;土壤有机碳;空间分布;植被类型
基金项目(Foundation):
作者(Author): 孙荣凯;陈智慧;
Email:
DOI: 10.13989/j.cnki.0517-6611.2016.13.066
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