| 氮添加对沙质草地氨挥发及硝态氮淋溶的影响 |
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| 引用本文： | 张亚欣,范志平,闫加亮,孙学凯,王琼.氮添加对沙质草地氨挥发及硝态氮淋溶的影响[J].生态学杂志,2011,30(9). |
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| 作者姓名： | 张亚欣 范志平 闫加亮 孙学凯 王琼 |
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| 作者单位： | 1. 中国科学院沈阳应用生态研究所,沈阳110016;中国科学院研究生院,北京100049
2. 中国科学院沈阳应用生态研究所,沈阳,110016 |
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| 基金项目： | 国家自然科学基金，中国北方草地“以禽代畜”生态经济示范工程项目，中国林业科学研究院协作项目 |
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| 摘 要： | 采用密闭室法和离子交换树脂袋法,研究了科尔沁沙质草地不同处理(水添加、氮添加、水氮添加)氧挥发的损失量和硝态氮的淋溶量.结果表明:氮添加处理和水氮添加处理显著促进了氨挥发(P＜0.05),最大氨挥发速率显著高于对照；氮添加处理和水氮添加处理的氨挥发累积量为111.80和148.64 mg·m-2,分别占氮添加量的1.1％和1.5％；水氮同时添加条件下,氨挥发累计量显著高于氨添加处理(P＜0.05),水添加处理和对照相比没有显著差异(P＞0.05)；水氮添加处理显著增加了土壤深度20 cm处的硝态氮淋溶量(P＜0.05),氮添加处理和水氮添加处理的硝态氮淋溶量分别是对照的1.96和4.22倍,然而在土壤深度40 cm处各处理硝态氮淋溶量差异不显著(P＞0.05)；可见,氮添加和水氮添加均促进了土壤的氧挥发,对硝态氮的淋溶没有显著影响.
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| 关 键 词： | 氮添加 沙质草地 氨挥发 硝态氮淋溶 |
Effects of nitrogen addition on ammonia volatilization and nitrate leaching of a sandy grassland. |
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| ZHANG Ya-xin,FAN Zhi-ping,YAN Jia-liang,SUN Xue-kai,WANG Qiong.Effects of nitrogen addition on ammonia volatilization and nitrate leaching of a sandy grassland.[J].Chinese Journal of Ecology,2011,30(9). |
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| Authors: | ZHANG Ya-xin FAN Zhi-ping YAN Jia-liang SUN Xue-kai WANG Qiong |
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| Institution: | ZHANG Ya-xin1,2,FAN Zhi-ping1,YAN Jia-liang1,SUN Xue-kai1,WANG Qiong1(1Institute of Applied Ecology,Chinese Academy of Sciences,Shenyang 110016,China,2Graduate University of Chinese Academy of Sciences,Beijing 100049,China) |
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| Abstract: | With enclosed and static chambers and ion exchange resin bags,this paper studied the effects of water addition(W) ,nitrogen addition(N) ,and water and nitrogen addition(WN) on the ammonia volatilization and nitrate leaching of a sandy grassland in southeastern Keerqin Sandy Land,taking no water and nitrogen addition as the control(CK) .Treatments N and WN promoted the ammonia volatilization significantly,and the maximum ammonia volatilization rate was significantly higher than that of the control(P<0.05) .T... |
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| Keywords: | nitrogen addition sandy grassland ammonia volatilization nitrate leaching |
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