1
|
Feng W, Lu H, Kang J, Yan P, Yao T, Guan Y, Jiang C, He M, Xue Y, Yu Q, Yan Y. Optimized multilateral crop trade patterns can effectively mitigate phosphorus imbalance among the involved countries. Sci Total Environ 2023; 870:161841. [PMID: 36720395 DOI: 10.1016/j.scitotenv.2023.161841] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Revised: 01/14/2023] [Accepted: 01/22/2023] [Indexed: 06/18/2023]
Abstract
Phosphorus imbalance for cropland can greatly influence environmental quality and productivity of agricultural systems. Resolving cropland phosphorus imbalance may be possible with more efficient multilateral crop trade within the involved trading countries; however, the driving mechanisms are unclear. This study calculates phosphorus budgets in China and five central Asian countries and proposes two optimal multilateral crop trade models to mitigate the phosphorus imbalance. Results show that the current trading pattern between China and Central Asia is causing a phosphorus imbalance intensification. Phosphorus surpluses in China and Uzbekistan are 41.7 and 8.9 kg/ha, while Kazakhstan, Kyrgyzstan, Tajikistan, and Turkmenistan exhibit phosphorus deficits with the negative value of -0.7, -1.2, -0.8, and -0.8 kg/ha, respectively. However, under the optimal multilateral crop trade patterns, phosphorus budget of China and Central Asia will become balanced. Phosphorus imbalance intensification for China is reduced to -2525 and -2472 kt under the single- and bilevel-objective-based crop trades. In Kyrgyzstan, it will drop 61.5 % and 50.0 % and change to 321 and 417 kt under the two optimal crop trades. Moreover, changes of phosphorus imbalance mitigations for other central Asian countries range from 11.9 % to 28.2 %. This provides a scientific basis when establishing policies for strengthening optimal multilateral crop trading across the world to promote global phosphorus management.
Collapse
Affiliation(s)
- Wei Feng
- Key Laboratory of Water Cycle and Related Land Surface Processes, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China; University of Chinese Academy of Sciences, Beijing, China
| | - Hongwei Lu
- Key Laboratory of Water Cycle and Related Land Surface Processes, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China.
| | - Jiajie Kang
- State Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin University, Tianjin, China
| | - Pengdong Yan
- State Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin University, Tianjin, China
| | - Tianci Yao
- Guangzhou Institute of Geography, Guangdong Academy of Sciences, Guangzhou, China
| | - Yanlong Guan
- School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen, China
| | - Chunfang Jiang
- State Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin University, Tianjin, China
| | - Mengxi He
- State Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin University, Tianjin, China
| | - Yuxuan Xue
- Key Laboratory of Water Cycle and Related Land Surface Processes, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China; University of Chinese Academy of Sciences, Beijing, China
| | - Qing Yu
- Key Laboratory of Water Cycle and Related Land Surface Processes, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China; University of Chinese Academy of Sciences, Beijing, China
| | - Yiming Yan
- Key Laboratory of Water Cycle and Related Land Surface Processes, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China; University of Chinese Academy of Sciences, Beijing, China
| |
Collapse
|