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寿光设施菜地土壤N2O排放规律及其影响因素

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陶宝先, 刘晨阳. 寿光设施菜地土壤N2O排放规律及其影响因素[J]. 环境化学, 2018, 37(1): 154-163. doi: 10.7524/j.issn.0254-6108.2017042802
引用本文: 陶宝先, 刘晨阳. 寿光设施菜地土壤N2O排放规律及其影响因素[J]. 环境化学, 2018, 37(1): 154-163. doi: 10.7524/j.issn.0254-6108.2017042802
shu
TAO Baoxian, LIU Chenyang. N2O emission from the greenhouse soils in Shouguang City, northern China[J]. Environmental Chemistry, 2018, 37(1): 154-163. doi: 10.7524/j.issn.0254-6108.2017042802
Citation: TAO Baoxian, LIU Chenyang. N2O emission from the greenhouse soils in Shouguang City, northern China[J]. Environmental Chemistry, 2018, 37(1): 154-163. doi: 10.7524/j.issn.0254-6108.2017042802
shu

寿光设施菜地土壤N2O排放规律及其影响因素

  • 1.

    聊城大学环境与规划学院, 聊城, 252059

  • 基金项目:

    国家自然科学基金（41501099），山东省自然科学基金（ZR2014DQ015，ZR2013DL003）和聊城大学基金（318051430）资助.

N2O emission from the greenhouse soils in Shouguang City, northern China

  • 1.

    College of Environment and Planning, Liaocheng University, Liaocheng, 252059, China

  • Fund Project: Supported by the National Natural Science Foundation of China (41501099),the Natural Science Foundation of Shandong Province (ZR2014DQ015,ZR2013DL003) and the Liaocheng University Foundation (318051430).

  • 摘要: 设施栽培是我国蔬菜生产的重要方式之一.设施菜地土壤高温、高湿、持续且大量施肥等特点，可能改变土壤氮素周转及N2O排放.寿光是我国重要的蔬菜生产基地之一.然而，鲜有研究关注寿光市设施菜地土壤N2O排放规律及其影响因素.本文以寿光市农田、种植6、12年设施菜地及荒废设施菜地为例，研究农田转变为设施菜地后土壤N2O排放规律，并探讨其影响机理.结果表明，设施菜地土壤N2O年排放量明显高于农田及荒废设施菜地，且种植6年设施菜地土壤N2O年排放量显著大于种植12年设施菜地（P2O排放通量呈显著正相关关系（P2O排放.（3）设施菜地具有较高的土壤脲酶活性，且与土壤硝态氮含量、含水率呈显著正相关关系（P2O排放.
    Abstract: Nitrous oxide (N2O) is an important greenhouse gas. Greenhouse is a vital method of vegetable production in China. Due to high soil temperature, moisture and continuous and large quantities of fertilizer application, these factors may change the nitrogen cycling and N2O emissions. Shouguang city is one of the largest bases for vegetable production in China where many farmland (FL) were changed into greenhouse for the vegetable production. However, little attention has been paid to the N2O emissions from the greenhouse soils in Shouguang city. In the present study, farmland(FL), greenhouse soils that were cultivated for 6 (6GH) and 12 (12GH) years and greenhouse abandoned for 12 years (AG) were taken as samples to investigate the variation of soil N2O emissions along the changes from FL to greenhouse and AG. The results showed that FL had similar annual N2O emissions with AG. Greenhouse had higher annual N2O emissions compared with FL, while the annual N2O emission in 6GH was larger than that in 12GH. It may be attributed to the following reasons. (1) More organic fertilizer were applied in the greenhouse soils compared with FL, which may supply more available substrates for the soil microbes. (2) Greenhouse had higher soil temperature, moisture and nitrate concentration compared with FL. These factors also had positive relationships with N2O emissions, which indicate that the increased soil temperature and moisture in greenhouse soils may promote the nitrification and then the N2O emissions. (3) Alteration from FL to Greenhouse enhanced urease activity. The urease activity had positive relationships with soil nitrate and moisture, respectively. These indicate that the increased urease activity may enhance the accumulation of soil nitrate and indirectly accelerate the N2O emissions through affecting the nitrification. When the greenhouse was cultivated over ten years, the application of fertilizer reduced. This may decrease the supply of available substrates and thus N2O emission.
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  • 收稿日期:  2017-04-28
  • 刊出日期:  2018-01-15
陶宝先, 刘晨阳. 寿光设施菜地土壤N2O排放规律及其影响因素[J]. 环境化学, 2018, 37(1): 154-163. doi: 10.7524/j.issn.0254-6108.2017042802
引用本文: 陶宝先, 刘晨阳. 寿光设施菜地土壤N2O排放规律及其影响因素[J]. 环境化学, 2018, 37(1): 154-163. doi: 10.7524/j.issn.0254-6108.2017042802
shu
TAO Baoxian, LIU Chenyang. N2O emission from the greenhouse soils in Shouguang City, northern China[J]. Environmental Chemistry, 2018, 37(1): 154-163. doi: 10.7524/j.issn.0254-6108.2017042802
Citation: TAO Baoxian, LIU Chenyang. N2O emission from the greenhouse soils in Shouguang City, northern China[J]. Environmental Chemistry, 2018, 37(1): 154-163. doi: 10.7524/j.issn.0254-6108.2017042802
shu

寿光设施菜地土壤N2O排放规律及其影响因素

  • 1. 聊城大学环境与规划学院, 聊城, 252059
  • 收稿日期:  2017-04-28
基金项目:

国家自然科学基金（41501099），山东省自然科学基金（ZR2014DQ015，ZR2013DL003）和聊城大学基金（318051430）资助.

摘要: 设施栽培是我国蔬菜生产的重要方式之一.设施菜地土壤高温、高湿、持续且大量施肥等特点，可能改变土壤氮素周转及N2O排放.寿光是我国重要的蔬菜生产基地之一.然而，鲜有研究关注寿光市设施菜地土壤N2O排放规律及其影响因素.本文以寿光市农田、种植6、12年设施菜地及荒废设施菜地为例，研究农田转变为设施菜地后土壤N2O排放规律，并探讨其影响机理.结果表明，设施菜地土壤N2O年排放量明显高于农田及荒废设施菜地，且种植6年设施菜地土壤N2O年排放量显著大于种植12年设施菜地（P2O排放通量呈显著正相关关系（P2O排放.（3）设施菜地具有较高的土壤脲酶活性，且与土壤硝态氮含量、含水率呈显著正相关关系（P2O排放.

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