紫色土丘陵区农田源头沟渠一氧化氮排放的季节差异及影响因素
Seasonal Variation in Nitric Oxide Emission from an Agricultural Headwater Ditch in the Hilly Purple Soil Area and the Factors Influencing Emission
查看参考文献45篇
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文摘
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农田源头沟渠是农田养分迁移的重要水文通道和非常活跃的氮转化场所.本研究以紫色土丘陵区农田源头沟渠为对象,在2014年12月~ 2015年11月,采用静态箱-化学发光法对其一氧化氮(NO)排放开展原位观测.结果表明,有自然植被覆盖的农田源头沟渠生态系统(V)中的NO年累积排放量为14.17 g·(hm~2·a) ~(- 1),而无自然植被覆盖的对照处理(NV,代表沟渠中的沉积物-水界面系统)则为- 0.4 g·(hm~2·a) ~(- 1).总体而言,沟渠生态系统的年综合排放通量是11.27 g·(hm~2·a) ~(- 1),全年平均排放通量为0.13 μg·(m~2·h) ~(- 1).农田源头沟渠仅在夏季是NO的排放源,且夏季NO累积排放量显著高于(P < 0.05)春季、秋季或冬季.沟渠上覆水NO_3~- -N浓度和温度是影响NO排放季节变化的主要控制因素.同时,沟渠生态系统中植物存在可显著提高所观测的NO排放通量,但对全年NO累积排放量无显著影响. |
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其他语种文摘
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Agricultural headwater ditches are important pathways of reactive nitrogen loss from adjacent croplands,and also act as hotspots for reactive nitrogen transformation. In this study,NO emissions from a typical agricultural ditch in the hilly area of central Sichuan Basin were measured by the closed static chamber-chemiluminescence method,from December 2014 to November 2015. The results showed that the cumulative NO emissions from the sediment-water interface without vegetation (NV) and the ditch ecosystem with natural vegetation (Ⅴ) were - 0.4 g·(hm~2·a) ~(- 1) and 14.17 g·(hm~2·a) ~(- 1),respectively. The combined annual NO emission flux for the agricultural headwater ditch ecosystem was 11.27 g·(hm~2·a) ~(- 1),with a mean NO emission rate of 0.13 μg·(m~2·h) ~(- 1). A net source of NO from the ditch ecosystem only occurred in summer,which had a significantly higher cumulative NO emission than those in the other seasons. The seasonal variation in NO emissions was mainly regulated by the seasonal changes in NO_3~- -N concentrations and temperature in the overlying water. Meanwhile,the presence of vegetation in the ditch ecosystem significantly increased NO emission rates,whereas it did not markedly influence the annual NO emission. |
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来源
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环境科学
,2018,39(4):1952-1961 【核心库】
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DOI
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10.13227/j.hjkx.201707250
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关键词
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沟渠生态系统
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一氧化氮
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间接排放
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硝态氮
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小流域氮循环
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温度
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地址
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1.
中国科学院水利部成都山地灾害与环境研究所, 成都, 610041
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中国科学院山地表生过程与生态调控重点实验室, 中国科学院山地表生过程与生态调控重点实验室, 成都, 610041
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中国科学院大学, 北京, 100049
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江苏大学环境与安全工程学院, 镇江, 212013
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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0250-3301 |
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学科
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环境科学基础理论 |
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基金
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国家重点研发计划项目
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文献收藏号
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CSCD:6204847
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参考文献 共
45
共3页
|
|
1.
Zhu X Y. Reduction of N_2O and NO generation in anaerobic-aerobic (low dissolved oxygen) biological wastewater treatment process by using sludge alkaline fermentation liquid.
Environmental Science & Technology,2011,45(6):2137-2143
|
被引
11
次
|
|
|
|
|
2.
Zheng X H. Effects of soil temperature on nitric oxide emission from a typical Chinese ricewheat rotation during the non-waterlogged period.
Global Change Biology,2003,9(4):601-611
|
被引
10
次
|
|
|
|
|
3.
蔡延江. 土壤N_2O和NO产生机制研究进展.
土壤,2012,44(5):712-718
|
被引
38
次
|
|
|
|
|
4.
蔡延江. 农田土壤N_2O和NO排放的影响因素及其作用机制.
土壤,2012,44(6):881-887
|
被引
36
次
|
|
|
|
|
5.
Anderson I C. Relative rates of nitric oxide and nitrous oxide production by nitrifiers,denitrifiers,and nitrate respirers.
Applied and Environmental Microbiology,1986,51(5):938-945
|
被引
22
次
|
|
|
|
|
6.
胡廷旭. 紫色土夏玉米-冬小麦轮作农田的NO 排放特征.
农业环境科学学报,2015,34(7):1407-1413
|
被引
3
次
|
|
|
|
|
7.
杜雁冰. 水稻覆膜节水种植对NO排放的影响.
气候与环境研究,2015,20(2):235-244
|
被引
3
次
|
|
|
|
|
8.
IPCC.
Climate change 2007: the physical science basis. Contribution of Working Group I to the Fourth assessment report of the intergovernmental panel on climate change,2007
|
被引
138
次
|
|
|
|
|
9.
Zhou Z X. Nitric oxide emissions from rice-wheat rotation fields in eastern China: effect of fertilization,soil water content,and crop residue.
Plant and Soil,2010,336(1/2):87-98
|
被引
4
次
|
|
|
|
|
10.
Mei B L. Nitric oxide emissions from conventional vegetable fields in southeastern China.
Atmospheric Environment,2009,43(17):2762-2769
|
被引
14
次
|
|
|
|
|
11.
Zheng X H. Seasonal characteristics of nitric oxide emission from a typical Chinese rice-wheat rotation during the non-waterlogged period.
Global Change Biology,2003,9(2):219-227
|
被引
12
次
|
|
|
|
|
12.
Peterson B J. Control of nitrogen export from watersheds by headwater streams.
Science,2001,292(5514):86-90
|
被引
79
次
|
|
|
|
|
13.
Zhu B. Measurements of nitrate leaching from a hillslope cropland in the Central Sichuan Basin, China.
Soil Science Society of America Journal,2009,73(4):1419-1426
|
被引
68
次
|
|
|
|
|
14.
Wang T. Nitrate loss via overland flow and interflow from a sloped farmland in the hilly area of purple soil,China.
Nutrient Cycling in Agroecosystems,2011,90(3):309-319
|
被引
19
次
|
|
|
|
|
15.
Kroger R. Hydrological variability and agricultural drainage ditch inorganic nitrogen reduction capacity.
Journal of Environmental Quality,2007,36(6):1646-1652
|
被引
22
次
|
|
|
|
|
16.
Mulholland P J. Stream denitrification across biomes and its response to anthropogenic nitrate loading.
Nature,2008,452(7184):202-205
|
被引
45
次
|
|
|
|
|
17.
Royer T V. Transport and fate of nitrate in headwater agricultural streams in Illinois.
Journal of Environmental Quality,2004,33(4):1296-1304
|
被引
9
次
|
|
|
|
|
18.
姜翠玲. 沟渠湿地对农业非点源污染物的净化能力研究.
环境科学,2004,25(2):125-128
|
被引
52
次
|
|
|
|
|
19.
Beaulieu J J. The effects of season and agriculture on nitrous oxide production in headwater streams.
Journal of Environmental Quality,2009,38(2):637-646
|
被引
11
次
|
|
|
|
|
20.
Herrman K S. Factors affecting denitrification in agricultural headwater streams in Northeast Ohio,USA.
Hydrobiologia,2008,598(1):305-314
|
被引
17
次
|
|
|
|
|
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