Create a publication-quality scientific figure in the style of Nature / SCI journals.
Figure type: geographic data visualization map
Title: "Steel & Alumina Industry Ecosystem Linkage Map"
Aspect ratio: 16:9
Resolution: 300 dpi or higher
Output style: clean, academic, minimal, publication-ready, vector-like, precise, high legibility
GENERAL STYLE
- Scientific journal figure style, similar to Nature / SCI supplementary figures
- White background, no texture
- Flat and clean composition
- No decorative effects, no 3D rendering, no glossy style, no infographic cartoon style
- Use precise typography, restrained color palette, balanced spacing
- Make the figure suitable for journal submission, academic papers, and conference presentations
BASE MAP
- Use a clean map of China as the main base layer (China Only)
- Provinces filled with soft muted pastel colors, low saturation
- Thin gray provincial borders
- Include South China Sea inset in standard scientific-map style
- [REMOVED] Do NOT include Southeast Asia or Malaysia insets
- Keep the map geographically accurate and uncluttered
- CRITICAL: Ensure all city markers align with precise geographic coordinates (lat/long)
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LAYER 1 — STEEL PRODUCTION CAPACITY
Visual encoding:
- Use red bubbles for steel capacity
- Bubble color: subtle red gradient or flat scientific red using #C0392B to #E74C3C
- White outline stroke, thin and crisp
- Bubble area proportional to production capacity (DIRECT PROPORTIONALITY)
- CRITICAL: Larger numerical value MUST correspond to Larger bubble size. Do NOT invert the scale.
- Largest steel bubble corresponds to 12,000 and has a diameter of about 15 mm
- All other bubbles scale proportionally by area
- Place each bubble at the correct city-level geographic position (Verify against standard maps)
- Use collision-aware layout for labels
- If cities are close, use slight label offset and thin leader lines
- If overlap is unavoidable, smaller bubbles must remain visible on top
- Label each point with city name and numeric value
- Company names appear in smaller neutral gray text below the city label
- Show unit only once in legend: "Unit: 10,000 tons"
Steel data (China Only):
Tangshan, Hebei — HBIS; Shougang Jingtang — 12,000
Rizhao, Shandong — Shandong Steel; Rizhao Steel — 8,500
Handan, Hebei — HBIS — 7,000
Anshan, Liaoning — Ansteel Group — 6,500
Liuzhou, Guangxi — Liuzhou Steel — 5,000
Shanghai Baoshan — Baosteel — 4,900
Linfen, Shanxi — 4,000
Zhangjiagang, Jiangsu — Shagang; Yonggang; Meishan Steel — 3,800
Wuhan Qingshan, Hubei — Baowu — 2,700
Taiyuan, Shanxi — 1,700
Jilin City, Jilin — 1,200
Qiqihar, Heilongjiang — 1,000
[REMOVED] Malaysia — Eastern Steel — 1,800
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LAYER 2 — ALUMINA PRODUCTION CAPACITY
Visual encoding:
- Use blue bubbles for alumina capacity
- Bubble color: subtle blue gradient or flat scientific blue using #2471A3 to #5DADE2
- White outline stroke, thin and crisp
- Bubble area proportional to production capacity (DIRECT PROPORTIONALITY)
- CRITICAL: Larger numerical value MUST correspond to Larger bubble size.
- Largest alumina bubble corresponds to 3,000 and has a diameter of about 10 mm
- All other bubbles scale proportionally by area
- Place each bubble at the correct city-level geographic position (Verify against standard maps)
- Use clean academic labeling
- If overlap occurs, use slight offset and fine leader lines; smaller bubbles remain visible
- Label each point with city name and numeric value
Alumina data:
Binzhou, Shandong — 3,000
Lvliang, Shanxi — 1,930
Baise, Guangxi — 1,550
Zhengzhou, Henan — 880
Guiyang, Guizhou — 450
Chongqing — 420
Kunming, Yuning — 140
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TYPOGRAPHY
- Use a clean sans-serif font similar to Helvetica / Arial / Source Sans
- Title at upper left:
"Steel & Alumina Industry Ecosystem Linkage Map"
dark gray #333333, bold, publication-style
- Optional subtitle in smaller font:
"Major production capacity distribution across China"
[REMOVED] "and selected overseas location"
- City labels: dark gray or color-matched but restrained, highly legible
- Company labels: smaller gray text
- Source note at lower right:
"Source: National Bureau of Statistics of China / Mysteel / Corporate annual reports"
small gray font, unobtrusive
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LEGEND
Place a compact scientific legend in the upper right:
- Separate steel and alumina bubble size guides
- Steel reference circles: 1,000 (Small) / 6,000 (Medium) / 12,000 (Large)
- Alumina reference circles: 500 (Small) / 1,500 (Medium) / 3,000 (Large)
- Ensure visual size increases with numerical value
- Unit: "Unit: 10,000 tons"
- Clean line-based legend, no decorative icons
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LAYOUT REQUIREMENTS
- Prioritize readability and publication clarity over decorative appearance
- Maintain visual hierarchy: title, map, bubbles, labels, legend, source
- Prevent label clutter in North China and East China
- Ensure Shanxi labels (Taiyuan, Linfen, Lvliang) remain readable
- Ensure Hebei labels (Tangshan, Handan) do not collide
- Ensure all Chinese locations are shown in English only
- Make the final output look like a high-quality journal figure, not a marketing infographic
- Crisp edges, balanced white space, precise alignment, scientifically credible appearance
- GEO-ACCURACY: Double-check that bubbles are centered on actual city coordinates, not random positions.