首页|Management scheme influence and nitrogen addition effects on soil CO2, CH4, and N2O fluxes in a Moso bamboo plantation

Management scheme influence and nitrogen addition effects on soil CO2, CH4, and N2O fluxes in a Moso bamboo plantation

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  • 国家科技期刊平台
  • NETL
  • NSTL
  • 万方数据
Background:It is still not clear whether the effects of N deposition on soil greenhouse gas (GHG) emissions are influenced by plantation management schemes. A field experiment was conducted to investigate the effects of conventional management (CM) versus intensive management (IM), in combination with simulated N deposition levels of control (ambient N deposition), 30 kg N·ha−1·year−1 (N30, ambient+30 kg N·ha−1·year−1), 60 kg N·ha−1·year−1 (N60, ambient+60 kg N·ha−1·year−1), or 90 kg N·ha−1·year−1 (N90, ambient+90 kg N·ha−1·year−1) on soil CO2, CH4, and N2O fluxes. For this, 24 plots were set up in a Moso bamboo (Phyllostachys edulis) plantation from January 2013 to December 2015. Gas samples were collected monthly from January 2015 to December 2015. Results:Compared with CM, IM significantly increased soil CO2 emissions and their temperature sensitivity (Q10) but had no significant effects on soil CH4 uptake or N2O emissions. In the CM plots, N30 and N60 significantly increased soil CO2 emissions, while N60 and N90 significantly increased soil N2O emissions. In the IM plots, N30 and N60 significantly increased soil CO2 and N2O emissions, while N60 and N90 significantly decreased soil CH4 uptake. Overall, in both CM and IM plots, N30 and N60 significantly increased global warming potentials, whereas N90 did not significantly affect global warming potential. However, N addition significantly decreased the Q10 value of soil CO2 emissions under IM but not under CM. Soil microbial biomass carbon was significantly and positively correlated with soil CO2 and N2O emissions but significantly and negatively correlated with soil CH4 uptake. Conclusion: Our results indicate that management scheme effects should be considered when assessing the effect of atmospheric N deposition on GHG emissions in bamboo plantations.

Greenhouse gasesManagement practicesNitrogen additionPhyllostachys edulisQ10

Junbo Zhang、Quan Li、Jianhua Lv、Changhui Peng、Zhikang Gu、Lianghua Qi、Xuzhong Song、Xinzhang Song

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State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University,Hangzhou 311300, China

Department of Biology Sciences, Institute of Environment Sciences, University of Quebec at Montreal, Case Postale 8888, Succursale Centre-Ville, Montreal H3C 3P8, Canada

Huzhou Research Institute of Forestry, Huzhou 313000, China

International Centre for Bamboo and Rattan, Beijing 100102, China

Zhejiang Academy of Forestry, Hangzhou 310023, China

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2021

森林生态系统(英文版)
北京林业大学

森林生态系统(英文版)

CSTPCDCSCDSCI
影响因子：0.09
ISSN：2095-6355
年,卷(期)：2021.8(1)
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