生态学杂志2011，Vol.30Issue(9)：1969-1974,6.
氮添加对沙质草地氨挥发及硝态氮淋溶的影响
Effects of nitrogen addition on ammonia volatilization and nitrate leaching of a sandy grassland.
摘要
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 ). The cumulative amount of ammonia volatilization in treatments N and WN was 111.80 mg · m-2 and 148.64 mg · m-2, accounting for 1.1% and 1.5% of the nitrogen added, respectively. The cumulative amount of the ammonia volatilization was significantly higher in treatment WN than in treatment N (P<0. 05) , but had no significant difference between treatments W and CK. Treatments N and WN increased the leaching amount of nitrate-N at 20 cm soil depth significantly ( P<0. 05 ) , being 1. 96 and 4. 22 times of the CK, respectively. No significant difference was observed in the leaching amount of nilrate-N at 40 cm soil depth among the treatments W, N, WN, and CK (P>0.05). The results suggested that both nitrogen addition and water and nitrogen addition promoted the ammonia volatilization , bul had little effects on the nitrate leaching of the sandy grassland.关键词
氮添加/沙质草地/氨挥发/硝态氮淋溶Key words
nitrogen addition/ sandy grassland/ ammonia volatilization/ nitrate leaching分类
农业科技引用本文复制引用
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):1969-1974,6.基金项目
国家自然科学基金项目(30972418)、中国北方草地“以禽代畜”生态经济示范工程项目(KZCX2-YW-Q1-13)和中国林业科学研究院协作项目(RIF2010-12)资助. （30972418）
