The five-to-seven-year-old pioneer stand was in a place to present 50–70% crown cover, which is favorable for the shade-tolerant species to grow . Semi-tolerant species were planted with the spacing of 5 × 5 m or 10 × 10 m . The planting holes for each fast-growing and semi-tolerant species in post-coal-mining areas in Indonesia have been usually carried out with sizes of 20 × 20 × 20 cm , 30 × 30 × 30 cm , 30 × 40 × 40 cm , 40 × forty × forty cm , or 50 × 50 × 50 cm .
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Khaterine William
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