典型农业小流域面源污染源解析与控制策略——以丹江口水源涵养区为例

龚世飞,丁武汉,居学海,肖能武,叶青松,黄进,李虎

Source Analysis and Control Strategies of Non-Point Source Pollution in Typical Agricultural Small Watershed: A Case Study of Danjiangkou Water Conservation Area

GONG ShiFei,DING WuHan,JU XueHai,XIAO NengWu,YE QingSong,HUANG Jin,LI Hu

表7 流域畜禽粪便负荷警报值及环境风险

Table 7 Alarm value for livestock manure and environmental risk

畜禽种类 Livestock 粪便量 Manure (×104 t·a-1) 猪粪当量转换系数 Equivalency factor 猪粪当量 Pig fecal equivalent 合计 Total (×104 t·a-1) 耕地负荷量 Cultivated land load (×t·hm-2·a-1) 警报值 Alarm value 分级指数 Classification 对环境构成污染的威胁 Environmental risk 猪Pig 0.955 1.00 0.955 1.168 14.676 0.489 Ⅱ 稍有 Slightly 牛Sheep 0.233 0.50 0.116 羊Cow 0.064 1.03 0.066 家禽Poultry 0.025 1.21 0.031