基于多限量标准的县域尺度畜禽养殖适度规模及潜在规模估算——以安徽省为例

Moderate scale and potential scale estimation of livestock and poultry breeding in county scale based on multiple limited standards:a case study of Anhui Province

开展了不同限量标准下安徽省各县(市、区)的畜禽养殖适度规模及潜在规模估算。结果表明,不同限量标准下的畜禽养殖适度规模估算结果在空间上都呈现出从安徽省的西北部向东南部逐渐递减的趋势,但不同限量标准下的畜禽养殖适度规模估算结果存在差异。其中,畜禽养殖排泄物氮负荷量限量标准下的畜禽养殖适度规模估算结果最大,全省为15 781.33万头(以猪当量计,下同);畜禽养殖排泄物猪粪当量警报值限量标准下的畜禽养殖适度规模最小,全省为4 733.88万头。6种限量标准下的畜禽养殖潜在规模空间分布与畜禽养殖适度规模基本一致。畜禽养殖排泄物猪粪当量警报值限量标准下的畜禽养殖适度规模超限最严重,全省超限796.81万头,共有48个县(市、区)超限,其中超限最多的是肥西县(102.92万头),超限最少的是马鞍山市市辖区(0.29万头)。

It was carried out moderate scale and potential scale estimation of livestock and poultry breeding in county scale in Anhui Province based on different limited standards. Results indicated that the moderate scale estimation result of livestock and poultry breeding based on different limited standards all showed decreasing trend from the northwest to the southeast gradually in Anhui Province. However, there existed significant differences between different limited standards. Moderate scale estimation of livestock and poultry breeding based on the limited standard of livestock feces nitrogen load was the largest with 157.813 3 million pigs equivalent while the limited standard of the alarm value of pig feces equivalent load was the smallest with 47.338 8 million pigs equivalent. The spatial distribution of potential scale of livestock and poultry breeding was basically the same as that of moderate scale. The limited stand-ard of the alarm value of pig feces equivalent load showed overrun most seriously. Anhui Province overrun 7.968 1 million pigs equivalent in total with 48 counties overrun. Among them,Feixi County overrun most with 1.029 2 million pigs equivalent and the main district of Maanshan City overrun least with 0.002 9 million pigs equivalent.