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应用生态学报 ›› 2019, Vol. 30 ›› Issue (9): 2949-2954.doi: 10.13287/j.1001-9332.201909.023

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毛竹林植硅体碳封存速率估算的最佳鲜叶采样时间

胡晓薇1, 黄程鹏1, 黄张婷1,2,3, 姜培坤1,2,3*, 吴家森1,2,3, 张云晴1, 孙凯1, 刘丽君1   

  1. 1浙江农林大学环境与资源学院, 杭州 311300;
    2浙江农林大学亚热带森林培育国家重点实验室, 杭州 311300;
    3浙江省竹资源与高效利用协同创新中心, 杭州 311300
  • 收稿日期:2019-05-30 出版日期:2019-09-15 发布日期:2019-09-15
  • 通讯作者: * E-mail: jiangpeikun@zafu.edu.cn
  • 作者简介:胡晓薇,女,1993年生,硕士研究生.主要从事土壤碳汇与全球气候变化研究.E-mail:18989308820@189.cn
  • 基金资助:
    国家自然科学基金项目(31600494,41471197)和浙江省教育厅项目(Y201533282)资助

Sampling time of living leaf for estimating phytolith-occluded organic carbon sequestration rate of Phyllostachys edulis.

HU Xiao-wei1, HUANG Cheng-peng1, HUANG Zhang-ting1,2,3, JIANG Pei-kun1,2,3*, WU Jia-sen1,2,3, ZHANG Yun-qing1, SUN Kai1, LIU Li-jun1   

  1. 1School of Environmental and Resource Sciences, Zhejiang A&F University, Hangzhou 311300, China;
    2State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou 311300, China;
    3Zhejiang Provincial Collaborative Innovation Center for Bamboo Resources and High-efficiency Utilization, Hangzhou 311300, China
  • Received:2019-05-30 Online:2019-09-15 Published:2019-09-15
  • Contact: * E-mail: jiangpeikun@zafu.edu.cn
  • Supported by:
    This work was supported by the National Natural Science Foundation of China (31600494, 41471197) and the Science and Technology Project of Zhejiang Province, China (Y201533282).

摘要: 本研究测定了毛竹林1年中不同月份现存鲜叶和凋落物的植硅体碳含量,通过比较不同月份鲜叶植硅体碳封存速率与全年凋落物植硅体碳封存速率,估算毛竹林植硅体碳封存速率的最佳鲜叶采样时间.结果表明: 毛竹鲜叶中植硅体和植硅体碳含量分别为23.45~101.07 g·kg-1和0.73~1.98 g·kg-1,且不同月份间差异显著;不同月份毛竹鲜叶植硅体碳封存速率为0.75~7.68 kg·hm-2·a-1,最大值和最小值分别出现在12月和4月,且差异显著;2月和12月毛竹鲜叶植硅体碳封存速率与全年凋落物植硅体碳封存速率之间无显著差异,可将2月和12月作为估算毛竹林植硅体碳封存速率的最佳采样月份.

Abstract: Monthly phytolith-occluded organic carbon (PhytOC) content in living leaves and litterfall of Moso bamboo (Phyllostachys edulis) were measured for a year. The PhytOC sequestration rate in living leaves of different months were compared with that in annual litterfall to determine the optimum sampling time of living leaves for estimating PhytOC sequestration rate of Moso bamboo. The contents of phytoliths and PhytOC in living leaves of Moso bamboos were 23.45-101.07 g·kg-1 and 0.73-1.98 g·kg-1, respectively, with significant difference among different months. The monthly PhytOC sequestration rates of living leaves of Moso bamboo in different months ranged from 0.75 to 7.68 kg·hm-2·a-1. The maximum and minimum rates of the PhytOC sequestration occurred in December and April respectively, with significant difference between them. There was no difference between the PhytOC sequestration rate in living leaves of Moso bamboos in February or December and that of litterfall in the whole year. Therefore, February or December should be the optimal month of sampling living leaves for estimating the PhytOC sequestration rate of Moso bamboo stands.