Climate Change Will Lead to a Significant Reduction in the Global Cultivation of Panicum milliaceum

Panicum milliaceum is a specialty crop that maintains the economic stability of agriculture in arid and barren regions world. Predicting potential geographic distribution globally clarifying ecological needs will help to advance development agriculture, which important for maintenance human life health. In this study, based on 5637 global records milliaceum, we used MaxEnt model ArcGIS software, Beijing Climate Center System Model (BCC-CSM2-MR) was selected predict present future combination with environmental factor variables; evaluated significant factors constraining by combining contributions assessed accuracy using AUC values Kappa statistics. The results showed highly accurate, simulation were credible, total suitable area world 4563.82 × 104 km2. high habitat 484.95 km2, accounting 10.63% area, mainly distributed United States, Russian Federation, France, Ukraine, Australia, Germany, etc. soil (hswd) most limiting followed precipitation (Precipitation Driest Month, bio14) temperature (Mean Temperature Wettest Quarter, bio8). Under four climate change scenarios, decreased different extents at levels compared contemporary period. Therefore, may significantly affect pattern cultivation thus reshape production trade patterns.