一棵成熟的樹，有著茂密的樹冠和粗糙的樹幹，背景透明

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Create a photorealistic cutout stock image of a single mature broadleaf deciduous tree, isolated and centered, showing the entire tree from roots to crown. The tree has a thick textured brown trunk that splits into several large upward branches, dense irregular rounded foliage, many small glossy leaves in varied bright spring green tones, natural shadows within the canopy, and fine visible branch details peeking through the leaves. Use even studio-style daylight, sharp focus, high detail, no ground, no landscape, no people, no text. Place it on a transparent-background preview checkerboard made of subtle light gray and white squares, as if displaying a PNG asset with transparency. Composition: square canvas, tree centered vertically and horizontally, crown nearly fills the upper width, trunk centered in the lower third, clean object-cutout edges, realistic botanical proportions.