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		海南岛农牧生产体系磷元素流动时空变化特征
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			Temporal and Spatial Variation Characteristics of Phosphorus Element Flows in the Crop-Livestock Production System of Hainan Island
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| 图3. 海南岛农田(A)、动物(B)生产子系统磷素流动空间变化 | 
| Fig. 3. Spatial changes of phosphorus flows in the farming production subsystem (A) and animal production subsystem (B) of Hainan Island | 
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