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GIS-model based estimation of nitrogen leaching from croplands of China

Jianjun Qiu, Hu Li, Ligang Wang, Huajun Tang, Changsheng Li and Eric Van Ranst UGent (2011) NUTRIENT CYCLING IN AGROECOSYSTEMS. 90(2). p.243-252
abstract
Nitrogen (N) is the most widely used fertilizer nutrient, and its application has increased substantially in recent decades in China. N loss through leaching has been recognized as one of the most common agricultural sources of groundwater contamination. Thus, prediction of N leaching from cropland is crucial for preventing groundwater pollution. This paper quantifies nitrogen leaching from China's croplands, identifies its spatial distribution under current cropping systems at national scale, and finally puts forward some policies or strategies to reduce rates of N leaching. A computer process simulation model of carbon and nitrogen biogeochemistry in agro-ecosystems (DNDC) was applied to predict nitrogen leaching in the soil layer of agricultural ecosystems at national scale. Data on climate, soil properties, cropping systems, acreage, and management practices at county scale were collected from various sources and integrated into a spatial GIS database to run the model. The total amount of N-leaching was predicted at 4.57 million t N/year, which is equivalent to 48 kg N per ha cropland in 1998. The spatial distribution of N leaching in China showed a sharp discrepancy between the northern and southern counties due to the differences in climatic conditions, soil properties, as well as farm management practices. The study also suggests that applying management alternatives, such as proper fertilizer, crop, water and soil management, could be efficient means for decreasing N leaching rates.
Please use this url to cite or link to this publication:
author
organization
year
type
journalArticle (original)
publication status
published
subject
keyword
Nitrogen leaching, Croplands of China, DNDC model, Spatial distribution, PNET-N-DNDC, ORGANIC-CARBON, OXIDE EMISSIONS, N2O, BIOGEOCHEMISTRY, CALIBRATION, CROP PRODUCTION, GAS EMISSIONS, SOIL, SIMULATION
journal title
NUTRIENT CYCLING IN AGROECOSYSTEMS
Nutr. Cycl. Agroecosyst.
volume
90
issue
2
pages
243 - 252
Web of Science type
Article
Web of Science id
000290942700006
JCR category
SOIL SCIENCE
JCR impact factor
1.792 (2011)
JCR rank
12/32 (2011)
JCR quartile
2 (2011)
ISSN
1385-1314
DOI
10.1007/s10705-011-9425-5
language
English
UGent publication?
yes
classification
A1
copyright statement
I have transferred the copyright for this publication to the publisher
id
1903865
handle
http://hdl.handle.net/1854/LU-1903865
date created
2011-09-19 15:26:05
date last changed
2016-12-19 15:41:59
@article{1903865,
  abstract     = {Nitrogen (N) is the most widely used fertilizer nutrient, and its application has increased substantially in recent decades in China. N loss through leaching has been recognized as one of the most common agricultural sources of groundwater contamination. Thus, prediction of N leaching from cropland is crucial for preventing groundwater pollution. This paper quantifies nitrogen leaching from China's croplands, identifies its spatial distribution under current cropping systems at national scale, and finally puts forward some policies or strategies to reduce rates of N leaching. A computer process simulation model of carbon and nitrogen biogeochemistry in agro-ecosystems (DNDC) was applied to predict nitrogen leaching in the soil layer of agricultural ecosystems at national scale. Data on climate, soil properties, cropping systems, acreage, and management practices at county scale were collected from various sources and integrated into a spatial GIS database to run the model. The total amount of N-leaching was predicted at 4.57 million t N/year, which is equivalent to 48 kg N per ha cropland in 1998. The spatial distribution of N leaching in China showed a sharp discrepancy between the northern and southern counties due to the differences in climatic conditions, soil properties, as well as farm management practices. The study also suggests that applying management alternatives, such as proper fertilizer, crop, water and soil management, could be efficient means for decreasing N leaching rates.},
  author       = {Qiu, Jianjun and Li, Hu and Wang, Ligang and Tang, Huajun and Li, Changsheng and Van Ranst, Eric},
  issn         = {1385-1314},
  journal      = {NUTRIENT CYCLING IN AGROECOSYSTEMS},
  keyword      = {Nitrogen leaching,Croplands of China,DNDC model,Spatial distribution,PNET-N-DNDC,ORGANIC-CARBON,OXIDE EMISSIONS,N2O,BIOGEOCHEMISTRY,CALIBRATION,CROP PRODUCTION,GAS EMISSIONS,SOIL,SIMULATION},
  language     = {eng},
  number       = {2},
  pages        = {243--252},
  title        = {GIS-model based estimation of nitrogen leaching from croplands of China},
  url          = {http://dx.doi.org/10.1007/s10705-011-9425-5},
  volume       = {90},
  year         = {2011},
}

Chicago
Qiu, Jianjun, Hu Li, Ligang Wang, Huajun Tang, Changsheng Li, and Eric Van Ranst. 2011. “GIS-model Based Estimation of Nitrogen Leaching from Croplands of China.” Nutrient Cycling in Agroecosystems 90 (2): 243–252.
APA
Qiu, Jianjun, Li, H., Wang, L., Tang, H., Li, C., & Van Ranst, E. (2011). GIS-model based estimation of nitrogen leaching from croplands of China. NUTRIENT CYCLING IN AGROECOSYSTEMS, 90(2), 243–252.
Vancouver
1.
Qiu J, Li H, Wang L, Tang H, Li C, Van Ranst E. GIS-model based estimation of nitrogen leaching from croplands of China. NUTRIENT CYCLING IN AGROECOSYSTEMS. 2011;90(2):243–52.
MLA
Qiu, Jianjun, Hu Li, Ligang Wang, et al. “GIS-model Based Estimation of Nitrogen Leaching from Croplands of China.” NUTRIENT CYCLING IN AGROECOSYSTEMS 90.2 (2011): 243–252. Print.