兴隆山自然保护区不同植被类型土壤碳含量特征研究  

The Study on Characteristics of Soil Carbon Content in Different Vegetation Types in Xinglong Mountains Nature Reserve

作　　者：张红勇 王寒冰 欧涛 王建辉 ZHANG Hongyong;WANG Hanbing;OU Tao;WANG Janhui(Management Centre of Xinglong Mountains National Nature Reserve of Gansu,Yuzhong Gansu 730117,China;Yantai Geological Survey Center of Coastal Zone,China Geological Survey,Yantai Shandong 264000,China;Yellow River Basin(Lanzhou section)Water-soil-biologic action and effect field,National Observation and Research Stati-on,Lanzhou Gansu 730070,China)

机构地区：[1]甘肃兴隆山国家级自然保护区管护中心,甘肃榆中730117 [2]中国地质调查局烟台海岸带地质调查中心,山东烟台264000 [3]黄河流域(兰州段)水-土-生资源作用与效应野外科学观测研究站,甘肃兰州730070

出　　处：《甘肃林业科技》2024年第2期1-9,共9页Journal of Gansu Forestry Science and Technology

基　　金：黄河流域中上游土壤植被资源调查监测与评价(DD20220884)。

摘　　要：为研究甘肃兴隆山国家级自然保护区内不同植被类型(高寒草甸、灌丛、落叶松人工林)的土壤碳含量特征,采用对角线五点取样法收集0—60 cm土层样本,分析了土壤总碳(TC)、土壤有机碳(SOC)和土壤无机碳(SIC)含量。结果显示,SOC在各植被类型土壤TC含量中占绝大比重,且在0—20 cm土层含量最高,随土层深度增加而减少;不同植被类型间,落叶松人工林的TC和SOC含量普遍高于高寒草甸和灌丛,表明落叶松人工林对土壤碳储存贡献显著;不同植被类型的SIC含量均很小,且在不同植被类型间表现出差异性,灌丛在0—40 cm土层中SIC含量较高,而落叶松人工林在整个土层中SIC含量相对稳定。本研究探析了自然保护区内不同植被类型对土壤碳储存功能的影响,为评估生态系统碳循环及制定保护措施提供科学依据。This study focused on the characteristics of soil carbon content of different vegetation types(alpine meadow,shrub,larch plantation)in Xinglongshan National Nature Reserve,Gansu.The contents of soil total carbon(TC),soil organic carbon(SOC)and soil inorganic carbon(SIC)in 0-60 cm soil layer were analyzed by diagonal five point sampling method.The results showed that SOC accounted for a large proportion of soil TC content in all vegetation types,and the content was the highest in 0-20 cm soil layer,which decreased with the increase of soil depth.Among different vegetation types,the contents of TC and SOC in larch plantations were generally higher than those in alpine meadows and shrubs,indicating that larch plantations contributed significantly to soil carbon storage.The SIC content of shrub in 0-40 cm soil layer is higher,while the SIC content of Larch Plantation in the whole soil layer is relatively stable.This study emphasized the impact of different vegetation types on soil carbon storage function in the nature reserve,and provided a scientific basis for assessing ecosystem carbon cycle and formulating protection measures.

关 键 词：兴隆山自然保护区 土壤碳含量 高寒草甸 灌丛 落叶松人工林 

分 类 号：S714[农业科学—林学] S718.5