Abstract
A large number of livestock and poultry breeding were distributed in the suburbs, brought a strong environmental pressure to the cities. The issue of whether livestock and poultry breeding could be carried out in the suburbs was a key controversy in the present. To address this question, this study constructed an index system of suitability evaluation of spatial layout of intensive pig farms, calculated the average surface temperature from June to September, and obtained potential intensive pig farms in Nanyu Town. Combing above results and area index results of cultivated land spatial matched with intensive pig farm, spatial relation between cultivated land and potential intensive pig farm was built, the optimum potential intensive pig farm in Nanyu Town was determined, and its carrying capacity was calculated. Results showed that livestock and poultry breeding could be carried out in the suburbs. A total of 3403 and 3253 pieces of cultivated lands occupying 52.01% and 49.67% of the total cultivated lands had a spatial relation between potential intensive pig farms taking N and P as indices, respectively. Moreover, 14 and 15 potential intensive pig farms taking N and P as indices, respectively, in Nanyu Town were determined as optimum potential intensive pig farms. Results also indicated that most of the optimum potential intensive pig farms were suitable for constructing small- and medium-sized pig farms. Results would provide scientific basis for the planning of spatial arrangement of livestock and poultry breeding and the suburb environmental pollution control.
Highlights
The rapid development of animal husbandry causes huge pollution problems in China (Qian et al, 2018; Yan et al, 2019)
The objectives of this study were (i) to answer whether livestock and poultry breeding can be carried out in the suburbs; (ii) to establish a index system of suitability evaluation of spatial layout of intensive pig farms considering the maximization of comprehensive benefits; (iii) to propose an area index of cultivated land spatial matched with intensive pig farm and build a spatial relation between cultivated land and potential intensive pig farm; and (iv) to identify the optimum potential intensive pig farms in the suburbs and calculate its carrying capacity for pigs considering the area index of cultivated land spatial matched with intensive pig farm and surface temperature during summer
This study carried out a suitability evaluation of the spatial layout of intensive pig farms, calculated average surface temperature and area index results of cultivated land spatial matched with intensive pig farm, and determined optimum potential intensive pig farms and its carrying capacity for pigs in Nanyu Town
Summary
The rapid development of animal husbandry causes huge pollution problems in China (Qian et al, 2018; Yan et al, 2019). In the early stage of insufficient environmental protection awareness, large- and medium-sized farms were located in the densely populated suburban areas or urban–rural areas (Wei et al, 2018; Zhang, 2019). These livestock farms were usually limited by the supporting cultivated land, which could not achieve the combination of planting and breeding (Zhang et al, 2019). With the rapid development of urbanization and the gradual strengthening of environmental awareness, the social and environmental problems caused by livestock farms in suburban areas or urban–rural areas were increasingly gaining prominence. Solving these social and environmental problems necessitated the selection of scientific and reasonable spatial layout of livestock farms in the suburbs according to the actual situation of nature, society, and economy
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