College of the Environment & Ecology, Xiamen University, Xiamen 361005, China.
J Environ Sci (China). 2013 Sep 1;25(9):1882-9. doi: 10.1016/s1001-0742(12)60244-7.
In consideration of the need to maintain planting-breeding balance, this article examines the capacity of the soil in Putian City, Fujian Province to absorb livestock and poultry excreta, and computes the environmental carrying capacity for livestock and poultry farming (ECCLPF) in each district of the city in terms of the fertility characteristics of the soil in the city, as well as its mix of crops cultivated and farming methods. On the basis of the computations, this work proceeds to classify the alarm grades of the city's environmental carrying capacity for livestock and poultry framing, and assess the environmental impact of the livestock and poultry farming industry. The results of our study indicate that, the city's ECCLPF ranges from 8.27 to 23.23 heads per ha when computed on the basis of nitrogen, and from 5.79 to 24.53 heads per ha when computed on the basis of phosphorus. A comparison between our research findings and the existing farming scale in Putian reveals that, in certain parts of the city, ECCLPF is overburdened to varying degrees. Specifically, Chengxiang District is severely overburdened, Hanjiang District and Meizhou Island have a level of overburdening between virtual overburdening and significant overburdening, Licheng District is virtually overburdened, and Xiuyu, Xianyou, and Bei'an Districts have not exceeded their environmental carrying capacity and therefore have varying levels of potential for growth.
考虑到维持种植-养殖平衡的需要，本文根据福建省莆田市土壤的肥力特征以及种植的作物和耕作方式，考察了土壤吸收畜禽粪便的能力，并计算了该市各地区的畜禽养殖环境承载能力（ECCLPF）。在此计算基础上，对该市畜禽养殖环境承载能力的警报等级进行了分类，并评估了畜禽养殖业的环境影响。研究结果表明，根据氮计算，该市的 ECCLPF 范围为每公顷 8.27 至 23.23 头，根据磷计算，范围为每公顷 5.79 至 24.53 头。将我们的研究结果与莆田现有的养殖规模进行比较后发现，该市某些地区的 ECCLPF 存在不同程度的超载。具体而言，城厢区严重超载，涵江区和湄洲岛处于虚拟超载和显著超载之间，荔城区处于虚拟超载，秀屿区、仙游县和北岸开发区未超过其环境承载能力，因此具有不同程度的增长潜力。
