pollution

Based on the livestock statistical data of 31 provinces of 1997～2004,this paper analyzed the structure of livestock and the variation of fecal nitrogen pollution load in China.

研究表明,中国的畜禽粪便N污染负荷呈现由西北内陆向东南沿海逐渐加重的趋势,可以400 mm等降水量线为界分为高污染负荷区和低污染负荷区。