The size structure and distribution pattern of Picea mongolica population on sand dune and their rerlationship to eco-environment are studied by size structure in place of age structure.
本文用种群大小结构代替年龄结构研究了沙地云杉种群的大小结构、分布格局和动态规律。
The size structure and distribution pattern of Picea mongolica population on sand dune and their rerlationship to eco-environment are studied by size structure in place of age structure.
本文用种群大小结构代替年龄结构研究了沙地云杉种群的大小结构、分布格局和动态规律。
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