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模拟增温对长白山北坡垂直样带森林土壤有机碳稳定碳同位素的影响
樊金娟1; 孟宪菁1; 张心昱2; 孙晓敏2; 高鲁鹏2
2010
Source Publication应用生态学报
ISSN1001-9332
Volume000Issue:007Pages:1621
Abstract分析了长白山北坡垂直样带3种典型原始森林地表凋落物及不同粒径土壤组分中有机质的δ13C值,并将在岳桦林样地(EB,海拔1996m)采集的20cm土柱分别置换到云冷杉林(SF,海拔1350m)和阔叶红松林(PB,海拔740m),云冷杉林样地采集的土柱置换到阔叶红松林中,进行为期1年的野外模拟增温试验.结果表明:3种林型土壤的δ13C值均显著高于凋落物的δ13C值,凋落物和土壤有机质中的δ13C值由地表凋落物向土壤下层逐渐增加,而土壤粒径中有机质的δ13C值随粒径减小而增大.3种林型中,凋落物δ13C值变化趋势为云冷杉林(-28.3‰)〉阔叶红松林(-29.0‰)〉岳桦林(-29.6‰),而土壤有机质的δ13C值变化趋势为岳桦林(-25.5‰)〉阔叶红松林(-25.8‰)〉云冷杉林(-26.2‰).在土壤温度增加0.7℃~2.9℃条件下,土壤及其各粒级的δ13C值均呈下降趋势,而且〈2μm粘粒和2~63μm粉粒δ13C值的降幅(0.48‰和0.47‰)高于〉63μm砂粒δ13C值的降幅(0.33‰).未来气候变暖可能对储藏在细小颗粒中年龄较长的有机碳带来较大的影响.
Language英语
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/100148
Collection中国科学院地理科学与资源研究所
Affiliation1.沈阳农业大学
2.中国科学院地理科学与资源研究所
Recommended Citation
GB/T 7714
樊金娟,孟宪菁,张心昱,等. 模拟增温对长白山北坡垂直样带森林土壤有机碳稳定碳同位素的影响[J]. 应用生态学报,2010,000(007):1621.
APA 樊金娟,孟宪菁,张心昱,孙晓敏,&高鲁鹏.(2010).模拟增温对长白山北坡垂直样带森林土壤有机碳稳定碳同位素的影响.应用生态学报,000(007),1621.
MLA 樊金娟,et al."模拟增温对长白山北坡垂直样带森林土壤有机碳稳定碳同位素的影响".应用生态学报 000.007(2010):1621.
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