Responses of the Leaf Characteristics of <i>Nymphoides peltata</i> to a Water Depth Gradient in the Qionghai Lake, Western Sichuan Plateau, China.

There was a highly significant negative correlation ( p < 0.01) between leaf petiole length and leaf area (R 2 = −0.88), leaf perimeter (R 2 = −0.79), leaf length (R 2 = −0.68), leaf width (R 2 = −0.91), and fresh leaf weight (R 2 = −0.70); between leaf petiole diameter and leaf area (R 2 = −0.30), leaf width (R 2 = −0.60), and fresh leaf weight (R 2 = −0.57); and between leaf petiole dry weight and leaf width (R 2 = −0.37), and fresh leaf weight (R 2 = −0.42).

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