...Pinus tabulaeformis)、侧柏(Platycladus orientalis)林种内个体竞争中得到应用,与常用的简单竞争指数(Competition index,CI)和空间竞争指数(Growth space index,GSI)进行了对比研究。
基于8个网页-相关网页
...者:马履一,王希群 laeformis)、侧柏(Platycladus orientalis)林种内个体竞争中得到应用,与常用的简单竞争指数(Competition index,CI)和空间竞争指数(Growth space index,GSI)进行了对比研究.
基于4个网页-相关网页
Quality Competition Index 质量竞争力指数
Growth space competition index 生长空间竞争指数 ; 例如高盛商品指数
World Knowledge Competition Index 知识竞争力指数 ; 世界知识竞争力指数
single tree competition index model 单木竞争指数
competition index ci 竞争指数
core competition index 核心竞争力指标
Hegyi competition index Hegyi竞争指数
simple competition index 简单竞争指数
The stand dynamic model, which chose the first year抯 basal area (BA) and the distance-dependent competition index as independent variable and the second year抯 BA as dependent variable, was brought forward based on the individual static model.
单木生长动态模型是,第二年的胸高断面积生长是前一年胸高断面积生长、及竞争指数的倒数函数之和的函数。
参考来源 - 紫椴人工林竞争机制及生长动态模拟研究·2,447,543篇论文数据,部分数据来源于NoteExpress
The relationships among 5 competition index and DBH, tree height and crown length have been established.
选取5种竞争指标,建立人工落叶松林木胸径、树高和冠长与各竞争指标间的相关关系。
This paper forms competition index by means of principle elements analysis and sets up individual tree growth model.
本文用主成分分析的方法构造竞争指标并建立单木生长模型。
Result shows, This competition index is suitable to Chinese fir man-made forest, and individual tree growth model accords with the demands of accuracy, it can be used to estimate growth of stands.
结果表明:该竞争指标对杉木人工林适用,所建立的单木生长模型符合精度要求,可用于预估林分生长。
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