Estimation of Carrying Capacity of Livestock Farm Based on Maximum Phosphorus Load of Farmland and GIS Spatial Analysis Technology
Estimation of Carrying Capacity of Livestock Farm Based on Maximum Phosphorus Load of Farmland and GIS Spatial Analysis Technology
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DOI：
10.18520/cs/v112/i09/1931-1936
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发表时间：
2017-05
期刊：
影响因子：
1
通讯作者：
Bojie Yan;Jingjie Yan;Wenjiao Shi
中科院分区：
文献类型：
--
作者：
Bojie Yan;Jingjie Yan;Wenjiao Shi
为避免畜禽粪便对环境的污染，为畜禽养殖场的合理布局提供依据，采用排泄系数法估算畜禽粪便磷负荷，并建立畜禽粪便养分分布模型。利用该模型和空间分析技术，将畜禽粪便磷素分配到农田。以上街镇为例，以畜禽粪便磷最大承载量为基础，计算了该地区畜禽养殖场的承载量。结果表明，2011年上街镇农田畜禽粪磷最大承载量为55.97 kg，最小承载量为0.74 kg，平均承载量为12.21 kg，总承载量为13382.90 kg，超过农田承载量的畜禽粪磷总量为2854.79 kg。结果还表明，各养殖场的最大、最小、平均和总载畜量分别为792头、10头、157头和9128头。该镇大部分养殖场的生猪存栏量低于300头，只有6个养殖场的生猪存栏量超过500头。研究结果可为畜禽养殖场的空间布局提供决策支持，控制畜禽粪便对环境的污染。
To avoid the environmental pollution caused by livestock manure and provide rational layout of livestock farm, we estimated the livestock manure phosphorus load by the excretion coefficient method and have developed a livestock manure nutrient distribution model. The livestock manure phosphorus was distributed to farmlands using this model and spatial analysis technology. The carrying capacity of livestock farms was calculated based on the maximum livestock manure phosphorus carrying capacity of farmlands and expressed in pig for the Shangjie town, China. The results showed that the maximum, minimum, average and total livestock manure phosphorus carrying capacity of farmlands was about 55.97, 0.74, 12.21 and 13,382.90 kg respectively, and the total load of 2854.79 kg manure phosphorus from livestock farms surpassed the carrying capacity of farmlands in Shangjie town in 2011. The results also demonstrated that the maximum, minimum, average and the total carrying capacity of livestock farms was respectively, 792, 10, 157 and 9128 pigs. Most of the livestock farms in the town had carrying capacity of less than 300 pigs and only six farms had carrying capacity of livestock more than 500 pigs. The results could provide decision support for the spatial layout of livestock farms, controlling environmental pollution caused by livestock manure.