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应用生态学报 ›› 2018, Vol. 29 ›› Issue (5): 1535-1541.doi: 10.13287/j.1001-9332.201805.007

• 研究论文 • 上一篇    下一篇

武功山山地草甸不同海拔凋落物-土壤碳、氮、磷含量及其生态化学计量特征

刘倩, 王书丽, 邓邦良, 郑翔, 黄立君, 郭晓敏, 张学玲, 张令*   

  1. 江西农业大学林学院/江西省森林培育重点实验室, 南昌 330045
  • 收稿日期:2017-11-19 出版日期:2018-05-18 发布日期:2018-05-18
  • 通讯作者: *E-mail: lingzhang09@126.com
  • 作者简介:刘 倩, 女, 1992年生, 硕士研究生. 主要从事土壤-植物养分循环研究. E-mail: 1067967521@qq.com
  • 基金资助:
    本文由国家自然科学基金项目(31360177,31560150)和江西农业大学博士后科研基金项目(9232306047)资助

Carbon, nitrogen and phosphorus contents and their ecological stoichiometry in litters and soils on meadow of Wugong Mountain, Jiangxi, China at different altitudes.

LIU Qian, WANG Shu-li, DENG Bang-liang, ZHENG Xiang, HUANG Li-jun, GUO Xiao-min, ZHANG Xue-ling, ZHANG Ling*   

  1. College of Forestry, Jiangxi Agricultural University/Jiangxi Province Key Laboratory of Silviculture, Nanchang 330045, China
  • Received:2017-11-19 Online:2018-05-18 Published:2018-05-18
  • Contact: *E-mail: lingzhang09@126.com
  • Supported by:
    This work was supported by the National Natural Science Foundation of China (31360177,31560150) and the Postdoctoral Science Foundation of Jiangxi Agricultural University (9232306047)

摘要: 以江西省武功山海拔1500~1900 m山地草甸为研究对象,研究不同海拔凋落物-土壤碳(C)、氮(N)、磷(P)含量及生态化学计量特征,并对其相关性进行分析.结果表明:不同海拔下凋落物C、N、P含量分别为397.5~458.24、11.59~17.12、1.05~2.19 mg·g-1,凋落物C含量随海拔升高不断减小,凋落物N、P含量随海拔升高先下降后升高.土壤C、N、P含量分别为51.64~80.01、3.30~4.77、0.44~1.09 mg·g-1,土壤C、N、P含量随海拔升高先增加后降低,土壤全P含量变异较小.不同海拔凋落物C∶N、C∶P、N∶P分别为24.73~40.36、203.65~463.08、7.16~13.80,并随海拔升高先升高后下降.不同海拔土壤C∶N、C∶P、N∶P分别为14.95~16.95、56.87~162.52、3.69~10.58,土壤C∶N随海拔升高没有显著变化,土壤C∶P、N∶P随海拔升高先升高后下降,在海拔1600~1700 m处达到最大.武功山山地草甸凋落物与土壤C、N、P含量随海拔升高的变化规律不同,不同海拔凋落物C、N、P均值,以及C∶N、C∶P和N∶P大于土壤.

Abstract: Carbon (C), nitrogen (N) and phosphorus (P) contents and ecological stoichiometry and their correlations of litter and soil along 1500-1900 m on Wugong Mountain meadow were studied. The results showed that litter C, N and P contents varied in the range of 397.5-458.24, 11.59-17.12, 1.05-2.19 mg·g-1, respectively. Litter C content decreased, and the contents of N and P decreased first and then increased with the increases of altitude. Soil C, N and P contents varied in the range of 51.64-80.01, 3.30-4.77, 0.44-1.09 mg·g-1, respectively. Soil C, N and P contents first increased and then decreased with the increases of altitude. However, soil P varied much less along the altitude gradient. Litter C:N, C:P and N:P varied in the range of 24.73-40.36, 203.65-463.08, 7.16-13.80, respectively, and first increased but then decreased with altitude. Soil C:N, C:P and N:P were 14.95-16.95, 56.87-162.52, 3.69-10.58, respectively. Soil C:N changed little with altitude. Soil C:P and N:P first increased and then decreased with increa-sing altitude, with the maximum presented at 1600-1700 m. Changes in soil C, N and P contents differed between litter and soil on Wugong Mountain meadow. The mean C, N and P contents as well as C:N, C:P and N:P in litter were higher than those in soil.