YAN Bojie, PAN Yuchun. Estimation of Nitrogen Pollution Load of Farmland from Livestock Manure in China Based on Grid[J]. Bulletin of Soiland Water Conservation, 2015, 35(5): 133-137.
DOI:
YAN Bojie, PAN Yuchun. Estimation of Nitrogen Pollution Load of Farmland from Livestock Manure in China Based on Grid[J]. Bulletin of Soiland Water Conservation, 2015, 35(5): 133-137. DOI: 10.13961/j.cnki.stbctb.2015.05.090.
Estimation of Nitrogen Pollution Load of Farmland from Livestock Manure in China Based on Grid
[Objective] The paper aims to estimate nitrogen pollution load in farmland in order to analyze environment pollution caused by livestock and poultry in China.[Methods] This paper estimated the amount of nitrogen nutrient of livestock and poultry based on statistical data. Then
the estimation and gridding of nitrogen pollution load of farmland were done using the method of area weighted interpolation and spatial analysis of GIS.[Results] The gridding of nitrogen pollution load of farmland was consistent with the basic characteristics of provincial data and the administrative boundary was no longer used as a basis for the division of nitrogen pollution load. The paper then used He'nan Province as s case study to verify the precision of gridding of nitrogen pollution load of farmland in China.[Conclusion] The dividing line of high value and low value of nitrogen pollution load of farmland coincided with the 400 mm isohyet. Among provinces in China
the higher nitrogen pollution load of farmland mainly occurred in Beijing City
Guangdong
Sichuan and Hu'nan Province. The lower nitrogen pollution load of farmland mainly occurred in Inner Mongolia Autonomous Region
Song K Y, Li Y, Ouyang W, et al. Manure nutrients of pig excreta relative to the capacity of cropland to assimilate nutrients in China[J].Procedia Environmental Sciences, 2012(13):1846-1855.