Research Article
Analysis of Nonpoint Source Pollution and Water Environmental Quality Variation Trends in the Nansi Lake Basin from 2002 to 2012
Table 2
The statistics data of pollution emission in the Nansi Lake Basin during 2002~2012.
| | Year | Agriculture | Animal husbandry | Fishery | Point source | | Seeded area | COD loss | NH3-N loss | Herds | COD loss | NH3-N loss | Yield | COD emissions | NH3-N emissions | COD emissions | NH3-N emissions | |
(km2) | (t/a) | (t/a) | (104 head) | (t/a) | (t/a) | (tons) | (t/a) | (t/a) | (t/a) | (t/a) |
| | 2002 | 26515.20 | 593624 | 118725 | 10664 | 44189 | 4182 | 288698 | 6376 | 9829 | 106857 | 34875 | | 2003 | 26644.93 | 596528 | 119306 | 12052 | 52670 | 5027 | 334330 | 7384 | 11383 | 93533 | 22955 | | 2004 | 26829.43 | 600659 | 120132 | 13984 | 59284 | 5678 | 402818 | 8897 | 13715 | 214266 | 25392 | | 2005 | 28825.40 | 645345 | 129069 | 14791 | 62415 | 5969 | 447441 | 9882 | 15234 | 114296 | 16708 | | 2006 | 29322.56 | 656475 | 131295 | 11937 | 48499 | 4629 | 421383 | 9307 | 14347 | 119364 | 16838 | | 2007 | 29367.92 | 657491 | 131498 | 10022 | 47395 | 4521 | 419885 | 9274 | 14296 | 110022 | 13552 | | 2008 | 29346.46 | 657010 | 131402 | 10400 | 46965 | 4451 | 470083 | 10382 | 16005 | 91619 | 10929 | | 2009 | 29615.18 | 663026 | 132605 | 11334 | 49266 | 4661 | 494588 | 10923 | 16839 | 99003 | 11221 | | 2010 | 29753.77 | 666129 | 133226 | 12181 | 50090 | 4728 | 521256 | 11512 | 17747 | 94034 | 10130 | | 2011 | 29841.26 | 668088 | 133618 | 12445 | 50790 | 4788 | 586979 | 12964 | 19985 | 76145 | 10624 | | 2012 | 29995.09 | 671532 | 134306 | 13014 | 51309 | 4830 | 597994 | 13207 | 20360 | 68389 | 10515 |
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