بررسی اثر سطح و پراکندگی پلات روی برآورد غنای گونه‏ ای در قالب سه طرح ویتاکر، استولگرن و یک طرح پیشنهادی جدید (آریز)، (مطالعۀ موردی: مراتع گردنۀ آریز سنندج)

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