Phosphorus use efficiency has crossed the turning point of the environmental kuznets curve: Opportunities and challenges for crop production in China

文献类型： 外文期刊

第一作者： Shen, Wangzheng

作者： Shen, Wangzheng;Li, Sisi;Zhuang, Yanhua;Zhang, Liang;Shen, Wangzheng;Li, Sisi;Zhuang, Yanhua;Zhang, Liang;He, Jing;He, Jing;He, Jing;Liu, Hongbin

作者机构：

关键词： Fertilizer; Farm size; Agricultural mechanization; Crop yield; Non-point source pollution

期刊名称：JOURNAL OF ENVIRONMENTAL MANAGEMENT （ 影响因子：8.91； 五年影响因子：8.549 ）

ISSN： 0301-4797

年卷期： 2023 年 326 卷

页码：

收录情况： SCI

摘要： The overuse of phosphate fertilizer causes waste of resources and is detrimental to the sustainability of agri-culture and aquatic systems. Effective management of phosphorus (P) in agricultural systems is important. Lack of understanding on the temporal and spatial variations of P utilization in farmland systems would constrain the development of more precise and effective policies as well as management practices. Here, we used two in-dicators, P use efficiency (PUE) and P surplus (Psur), to evaluate changes in P utilization in crop production on both national and regional scale in China during 2005-2018. Great heterogeneity of PUE and Psur were found across different regions, with Northeast of China showing the highest PUE (0.67) and lowest Psur (11.0 kg/ha). For temporal trends, our study showed that China crossed the turning point of the environmental Kuznets curve in 2007, which indicates that China has reached a new development stage of P use that is resource-saving and environmentally friendly. Along with the processes of industrialization and urbanization in China, the devel-opment of agricultural mechanization has further resulted in an increase of PUE and decrease of Psur. Although great efforts were made, China still has a relative low PUE and high Psur compared to developed countries. Our results suggest a regionalized perspective for developing policies for the sustainable use of P resources.

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