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鹿类保护区: K = 1200 , r = 0,4 /年。最大可持续年捕获量是多少?在什么种群水平维持鹿群?
鹿类保护区: K = 1200 , r = 0,4 /年。最大可持续年捕获量是多少?在什么种群水平维持鹿群?
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