2.1.2林分调查因子及其测算方法 -树种组成 树种组成(species composition):组成 林分树种的成分。 纯林(pure stand):由一个树种组成的 林分或混有其他树种但材积都分别占不 到10%的林分称作纯林。
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... These Native Species Composition 这些土着人种构成 Tree Species Composition 树种组成 Species Composition Complex 树种成份复杂 ...
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主要组成树种有水青冈 Fagus longnpetiolata
长期影响主要是由树种组成的变化以及随之而来的森林结构、生产力和养分吸收的变化所导致的。
Long-term effects are primarily mediated by changes in tree species composition and the consequent alterations of forest structure, productivity, and nutrient uptake.
对直径生长转移概率矩阵模型进行了线性扩展,用以研究混交异龄林的树种组成问题。
A transfering probability matrix model of linearly generalized diameter growth was used to deal with the tree species composition problem of mixed unevenly aged forest.
分析了海南岛霸王岭自然保护区热带山地雨林林隙内树种的种类组成、数量动态以及林隙年龄和林隙面积对树种组成及数量的影响。
Species composition, quantitative dynamics and effects of gap age and gap size on species compositions were studied in the tropical montane rain forest of Bawangling Natural Reserve, Hainan Island.
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