stand density

To clarify the relation between the pollen percentage of Larix and its stand density, surface samples from tundra, forest tundra and taiga in the Far East Russia were analyzed.

为了搞清楚落叶松花粉百分比和实际森林密度的关系，我们系统地分析了从苔原、森林苔原以及泰加林的表土样品。

The 5-year study indicates that the optimal thinning treatment for 20~ 30-year-old natural birch stands is to maintain a stand density of 1 100 stems · hm-2 and the pruning intensity should not exceed 1/ 2 tree height.

5a的研究结果表明，林龄20～30a的白桦天然林最适林分密度为1100株·hm-2，修枝强度不应超过1/2树高。

It has been shown that in many clonal perennials, when light is limiting, shoot natality decreases and shoot mortality increases with increasing stand density.

对许多多年生克隆植物来说，大量的研究表明：当光是限制因子时，随着立地密度的不断增加，克隆分株的出生率逐渐减小、死亡率逐渐增加。

Stand density was reduced from 404 to 387 stem/ hm 2, and basal area from 44 83 to 43 79 hm 2.All species in high canopy layer except Acer mono decreased in number of stems.

林分密度从404株／hm2降至387株／hm2，而基础面积从44.83hm2降至43.79hm2。除色木槭之外，冠层林木的株数降低。

An Approach to Derive Stand Density Control Chart from the Integrated Stand Growth Model

由全林整体生长模型推导林分密度控制图的方法

Design and application of the stand density form of Chinese white poplar

毛白杨林分密度表的编制及其应用

The density of Casuarina stand affected the producing of self-allelopathy.

林分密度影响 木麻黄 他感物质的分泌.

A study on the stand density control diagrams

林分密度管理图编制的研究

Study on Effect of Stand Density on Tree Stem Form of Slash Pine

林分密度对湿地松林木干形影响的研究

The results indicate that: ( 1) Bifurcation ratio is positively related with the tree size and it is negatively related with the stand density. For the suppressed trees in stand, the bifurcation ratio does more affect from the stand density.

研究结果表明：（1）分枝率与林木的大小呈正相关，与林分密度呈负相关，且林分中生长水平越差的林木的分枝率受到林分密度的影响越大。

A study on density optimum control during stand management for plantation

人工林经营过程密度最优控制研究

Ash has much higher fine root biomass density in the soil than larch at stand level ( with the max value of 4442.3 vs. 2234.9 gm-3).

在林分水平上，水曲柳的根生物量密度高于落叶松（分别为4442.3和2234.9g/m3）。

Studies on the stand density control diagram for Cunninghamia lanceolata

编制杉木林分密度管理图研究报告

Study on natural Dahurian Larch stand growth model and variable density yield table

兴安落叶松天然林林分生长模型和可变密度收获表的研究

Studies on the stand density control diagram for black locust plantation in Liaoning Province

编制辽宁省刺槐人工林林分密度管理图

It was suggested that a low stand density management and a proper heavy thinning with low thinning frequency will be adequate.

提出了对人工林实行低密度管理（高强度、低频度间伐）的改进意见。