江西省家养畜禽非点源氮潜在负荷变化特点

Distribution Characteristic of Livestocks and Fowls Non-point Source Nitrogen Latency Load in Jiangxi Province

依据1981-1985年和2001-2003年间江西省各县市家禽、生猪和大牲畜等指标的统计数据,分析江西省畜禽非点源氮单位面积潜在负荷的变化特点.采用修正的Johnes模型对非点源氮单位面积负荷量进行估算,得出如下结论:(1)随着环境非点源氮潜在负荷量的增加,家禽的非点源氮单位面积负荷量也增加了;(2)生猪非点源氮潜在负荷量在两个时代基本与环境非点源氮潜在负荷量保持一致;(3)大牲畜非点源氮单位面积潜在负荷量的变化都比较频繁,处于一种动态的上升过程.

The main purpose of this paper is the distributron characteristic of agriculture non-point source nitrogen latency load in Jiangxi Province. The data come from the Jiangxi province agriculture statistical yearbook from 1981 to 1985, from Jiangxi province statistical yearbook from 2001 to 2003 and other statistical yearbooks. The attributes include the amount of domestic fowls, of live pigs, of farm cattles. The article analyses the difference between the characteristic of agriculture non-point pollution in 1980＇s and that of in 2000＇s. The conclusion：firstly,the more totle latency load in the region is,the more latency load of domestic fowls is. Secondly,it＇s accord to the totle latency load in the region that of latency load of live pigs. Finnally,the latency load of farm cattles is quivering constantly.