Advances in Meteorology / 2015 / Article / Tab 2

Research Article

Research on Nonpoint Source Pollution Assessment Method in Data Sparse Regions: A Case Study of Xichong River Basin, China

Table 2

TN and TP loads calculation of all kinds of pollution sources in 2012 (unit: ton⋅yr−1).

TypesTypes of pollution sourceTNProportion/%TPProportion/%

Land use
Dry landFertilizer340.8439.249.4714.55
Paddy field97.2811.204.246.52
Orchard2.360.270.100.15
Natural woodland19.852.291.502.30
Waste land3.630.420.150.23
Subtotal463.9653.4215.4623.76
Urban landUrban runoff24.772.850.651.00
Livestock and poultry
CattleLivestock and poultry10.051.160.510.78
Pig70.858.168.7013.37
Sheep11.091.280.430.66
Poultry5.150.590.510.78
Subtotal97.1311.1810.1615.61
Population
Rural populationRural sewage 202.9623.3727.8742.82
Urban populationUrban Sewage 79.679.1710.9416.81

Total868.5100.0065.08100.00

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