EVALUATION OF LIVESTOCK AND POULTRY BREEDING CARRYING CAPACITY OF ARABLE LANDS IN SHANGHAI SUBURBS
EVALUATION OF LIVESTOCK AND POULTRY BREEDING CARRYING CAPACITY OF ARABLE LANDS IN SHANGHAI SUBURBS
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上海市郊区耕地畜禽养殖承载力评价
DOI：
10.13031/2013.18398
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发表时间：
2005
期刊：
影响因子：
--
通讯作者：
Zhongchun Yan
中科院分区：
文献类型：
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作者：
Genxiang Shen;Xiaoyong Qian;Zheng Yao;Zuxin;Xu;Shenfa Huang;Zhongchun Yan
上海是中国人口最密集的城市之一，在周边郊区有1000多个大型畜禽养殖场。这些农场生产的动物产品在城市的当地市场上出售。动物粪便造成的水污染在上海郊区已经成为一个严重的问题。通过控制畜禽种群数量，有望在一定程度上解决这些问题。以上海近郊不同农田为研究对象，分析了基于畜禽粪便产量和土地可持续利用率的养分管理制度下的耕地畜禽承载力。结果表明：在畜禽标准单位（LPSU）形式下，基于作物总氮（TN）需要量的耕地畜禽承载能力大于基于作物P2O5需要量的耕地畜禽承载能力，根据作物养分利用桶理论，应选择较小的耕地承载能力；假设作物对畜禽P2O5需求量为100%的情况下，耕地的畜禽承载能力约为1570万LPSU，这意味着目前的耕地仍能支撑畜禽种群，而在当前作物对畜禽P2O5需求量为50%的情况下，耕地的畜禽承载能力约为780万LPSU。该报告预测，目前至少有三分之一的畜禽养殖人口超过了上海郊区耕地的适宜承载能力。探讨了今后为满足上海郊区畜禽可持续承载能力的调控措施。
Shanghai, one of the most densely populated cities in China, has over 1,000 large-scale livestockand poultry farms within the surrounding suburbs. These farms produce animal products that aresold in local markets within the city. Water pollution from animal waste has been a seriousproblem in Shanghai suburbs. There is a prospect to address these problems to some extent bycontrolling livestock and poultry breeding population. This study analyzes the livestock andpoultry carrying capacity of arable lands under a nutrient management system based on animalmanure production and sustainable land application rates for different croplands in Shanghaisuburbs. The results show that, with the livestock and poultry standard unit (LPSU) form, thelivestock and poultry carrying capacity of arable lands based on total nitrogen (TN) demands ofcrops is bigger than that based on P2O5 demands of crops, the smaller one should be selected as asuitable carrying capacity of arable lands according to the cask theory of crop nutrient utilization;and under the supposing situation of 100% of P2O5 demands of crops from animal manure, thelivestock and poultry carrying capacity of arable lands is about 15.7 million LPSU, whichimplied that the arable lands still can support the current livestock and poultry population, whileunder the current situation of 50% of P2O5 demands of crops from animal manure, the livestockand poultry carrying capacity of arable lands is about 7.8 million LPSU, which predicated that atleast one-third of the current population of livestock and poultry breeding exceeded the suitablecarrying capacity of arable lands in Shanghai suburbs. Future adjustments and control measuresto meet the sustainable livestock and poultry carrying capacity in Shanghai suburbs are alsodiscussed.