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| Resource distribution and environmental loadof animal manure in Hubei province |
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| Abstract: |
| ：This paper estimated and analyzed the resource amount and distribution of animal manure in Hubei
province in 2012，and combined the evaluation standard of cultivated land area，around the unit cultivated land of
animal manure bearing capacity，to evaluate the environmental impact of nitrogen and phosphorus load. The results
showed that 98.7 million t of animal manure were produced in Hubei province in 2012. Among them，pig manure and
cow dung are took up the highest proportion，accounting for 80% of the total，while the rabbit donkeys，horses dung
output were less than 1% of the total. Huanggang，Xiangyang produced the most manure，more than 15 million t；
While Shennongjia had much lower than other areas，only about 116 000 t. The average total phosphorus load per unit
area of cultivated land was 34.03 kg/hm2，which was slightly lower than the standard of set limit（35 kg/hm2），per
unit cultivated land area of pig equivalent evaluation standard and total nitrogen load were 54.19 t/hm2 and 219.12 kg/
hm2 respectively，and 53% and 80% areas of the province had more than 45 t/hm2 and 170 kg/hm2. In Huanggang，
Ezhou，Shiyan，Xiangyang，Xiaogan，Enshi，Shennongjia and Wuhan，pig equivalent load was over limited standard.
Areas where nitrogen load exceeded the limit standard were Wuhan，Huangshi，Shiyan，Yichang，Xiangyang，
Ezhou，Jingmen，Xiaogan，Huanggang，Xianning，Enshi，Qianjiang，Shennongjia. Areas where phosphorus load
exceeded standard were Shiyan，Xiangyang，Ezhou，Xiaogan，Huanggang，so we must take measures depending on
the kinds and regions. It can be concluded that livestock and Poultry manure of cultivated land distribution was highly
uneven on the space，mainly concentrated in Huanggang，Ezhou，Xiaogan，Enshi，Xiangyang，Shiyan，Shennongjia
and Wuhan. |
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