1 College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China; 2 Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100193, China; 3 Xinjiang Institute of Ecology and Geology, Chinese Academy of Sciences, Urumqi 830011, China; 4 Agri-Environment Branch, Agri-Food and Biosciences Institute, Belfast BT9 5PX, UK; 5 Institute of Plant Ecology and Landscape, University of Hohenheim, Stuttgart, Germany
Estimating total nitrogen deposition in agroecosystems in northern China during the wheat cropping season
1 College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China; 2 Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100193, China; 3 Xinjiang Institute of Ecology and Geology, Chinese Academy of Sciences, Urumqi 830011, China; 4 Agri-Environment Branch, Agri-Food and Biosciences Institute, Belfast BT9 5PX, UK; 5 Institute of Plant Ecology and Landscape, University of Hohenheim, Stuttgart, Germany
摘要 Atmospheric nitrogen (N) deposition has been poorly documented in northern China, an intensive agricultural and industrial region with large emissions of NHx and NOy. To quantify N deposition, total airborne N deposition was determined at three agricultural sites using a manual integrated total nitrogen input (ITNI) system during growth of winter wheat (Triticum aestivum L.) and Italian ryegrass (Lolium multiflorum Lam.) from September 2005 to May 2006. Total estimated N deposition averaged 54.9 and 43.2 kg N/hm2 across the three sites when wheat was grown to flowering and maturing, respectively. The average value was 50.2 kg N/hm2 when ryegrass was the indicator plant. Both indicator species gave similar total airborne N input results. The intermediate level of N supplied resulted in the highest N deposition, and the ratio of N acquired from deposition to total N content of the whole system decreased with increasing N supply to the roots. The contribution of atmospheric N to the total N content of the wheat and ryegrass sand culture systems ranged from 10% to 24%.
Abstract: Atmospheric nitrogen (N) deposition has been poorly documented in northern China, an intensive agricultural and industrial region with large emissions of NHx and NOy. To quantify N deposition, total airborne N deposition was determined at three agricultural sites using a manual integrated total nitrogen input (ITNI) system during growth of winter wheat (Triticum aestivum L.) and Italian ryegrass (Lolium multiflorum Lam.) from September 2005 to May 2006. Total estimated N deposition averaged 54.9 and 43.2 kg N/hm2 across the three sites when wheat was grown to flowering and maturing, respectively. The average value was 50.2 kg N/hm2 when ryegrass was the indicator plant. Both indicator species gave similar total airborne N input results. The intermediate level of N supplied resulted in the highest N deposition, and the ratio of N acquired from deposition to total N content of the whole system decreased with increasing N supply to the roots. The contribution of atmospheric N to the total N content of the wheat and ryegrass sand culture systems ranged from 10% to 24%.
基金资助: One-hundred Talents Program of CAS, the Special Fund for Agricultural Profession (200803030); the Sino-German project (DFG Training Group, GK1070)
通讯作者:
XueJun LIU
E-mail: xuejun13500@gmail.com
引用本文:
ChunE HE, XueJun LIU, Christie PETER, Fangmeier ANDREAS, FuSuo ZHANG. Estimating total nitrogen deposition in agroecosystems in northern China during the wheat cropping season[J]. 干旱区科学, 10.3724/SP.J.1227.2010.00002.
ChunE HE, XueJun LIU, Christie PETER, Fangmeier ANDREAS, FuSuo ZHANG. Estimating total nitrogen deposition in agroecosystems in northern China during the wheat cropping season. Journal of Arid Land, 2010, 2(1): 2-8.
