| 短期氮添加对山西右玉黄土高原盐渍化草地氨挥发的影响 |
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| 引用本文： | 赵晓洁,张雄伟,薛江博,杨凯元,陈晓鹏,王常慧,董宽虎,赵祥.短期氮添加对山西右玉黄土高原盐渍化草地氨挥发的影响[J].草地学报,2022,30(4):992-999. |
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| 作者姓名： | 赵晓洁 张雄伟 薛江博 杨凯元 陈晓鹏 王常慧 董宽虎 赵祥 |
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| 作者单位： | 1. 山西农业大学草业学院, 山西 太谷 030801;2. 山西右玉黄土高原草地生态系统定位观测研究站, 山西 右玉 037200 |
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| 基金项目： | 国家自然科学基金;山西省优秀人才创新项目 |
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| 摘 要： | 氨挥发是草地生态系统土壤氮素损失的主要途径.掌握氨挥发特征及其与环境要素之间的关系,能够为盐渍化草地养分管理策略制定等提供依据.试验采用间歇密闭室抽气法,测定黄土高原盐渍化草地短期添加氮(0,1,2,4,8,16,24和32gN·m-2·a-1)对盐渍化草地氨挥发的影响.结果表明:草地氨挥发速率与月累积量随氮添加水平的...
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| 关 键 词： | 氮添加 盐渍化草地 氨挥发 |
| 收稿时间： | 2021-11-27 |
Effects of Short-Term Nitrogen Addition on Ammonia Volatilization from Salinized Grassland On the Loess Plateau in Youyu,Shanxi Province |
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| ZHAO Xiao-jie,ZHANG Xiong-wei,XUE Jiang-bo,YANG Kai-yuan,CHEN Xiao-peng,WANG Chang-hui,DONG Kuai-hu,ZHAO Xiang.Effects of Short-Term Nitrogen Addition on Ammonia Volatilization from Salinized Grassland On the Loess Plateau in Youyu,Shanxi Province[J].Acta Agrestia Sinica,2022,30(4):992-999. |
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| Authors: | ZHAO Xiao-jie ZHANG Xiong-wei XUE Jiang-bo YANG Kai-yuan CHEN Xiao-peng WANG Chang-hui DONG Kuai-hu ZHAO Xiang |
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| Institution: | 1. College of Grassland Science, Shanxi Agricultural University, Taigu, Shanxi Province 030801, China;2. Youyu Loess Plateau Grassland Ecosystem Research Station, Shanxi Agricultural University, Youyu, Shanxi Province 037200, China |
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| Abstract: | Ammonia volatilization is the main way of soil nitrogen loss in the grassland ecosystem.Grasping the characteristics of ammonia volatilization,as well as the relationship between ammonia volatilization and environmental factors,can provide a basis for the formulation of nutrient management strategies for salinized grassland.The effects of short-term nitrogen addition (0,1,2,4,8,16,24,and 32 g N·m-2·a-1) on ammonia volatilization from saline grassland on the Loess Plateau were measured by intermittently closed chamber extraction method.The results demonstrated that the volatilization rate and monthly accumulation of ammonia rose with the amount of nitrogen addition;As the amount of added nitrogen increased,the net accumulation of ammonia volatilization in the growing season showed a power function growth,while the loss rate of ammonia volatile nitrogen decreased in power function.Ammonia volatilization rate was negatively correlated with soil moisture and nitrate nitrogen content (P<0.05),positively correlated with soil temperature,pH value and ammonium nitrogen content (P<0.05),and had no significant relationship with K+,Ca2+,Mg2+,Na+ content in soil.When the nitrogen addition was 16 g N·m-2·a-1,the net primary productivity of salinized grassland reached the threshold and the ammonia volatilization loss rate was relatively small,which promoted the nitrogen use efficiency and reduced environmental pollution and nitrogen loss of salinized grassland. |
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| Keywords: | Nitrogen addition Salinized grassland Ammonia volatilization |
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