造林密度

胶合板材产量随立地指数的增大而增大，且占总产量的百分比在立地指数为14、16、18m时，随造林密度的增大而减小；

The percentage of plywood timber to total yield decreases with increase of planting density in the site indices 14,16 and 18 m ;

在立地指数为14、16、18m时磨木浆材产量占总蓄积量的百分比和化学浆材产量占总蓄积的百分比均随造林密度的增大而增大；

The percents of ground wood pulp timber yield to total yield and chemical pulp timber yield to total yield increase with increase of planting density in site indices 14,16 and 18 m ;

对不同造林密度的杉木Cunninghamialanceolata林进行对比试验。

A comparative study of Cunninghamia lanceolata forests with different forestation densities was conducted .

研究结果表明，1.5m×1.5m株行距单株栽植是适宜的造林密度。

The results showed that 1.5m × 1.5m rowing space was suitable planting density for Tilia amurensis .

通过设置4种不同的造林密度试验来研究密度对桉树无性系林分生长的影响，并以Richards生长函数为模型拟合了不同造林密度条件下桉树无性系林分生长模拟预测模型。

This paper deals with the effects of 4 different planting densities on the growth of Eucalyptus clone stands and a growth prediction model was established based on Richards function .

采用Richards生长模型为日本落叶松人工林生长的基本模型，建立了整体生长和收获预估模型、林分自然稀疏模型，研制了不同造林密度的日本落叶松人工林自然生长过程表。

Using Richards growth model as the basis , stand growth and harvest forecast and self-thinning model were established for Larix kaempferi pulp plantation . Natural growth table of forest for different density were also built .

经多年定位观测试验得出：杨树造林密度为2m×2m，采伐周期为5a生物量最高；

The located observation experimentations addressed to these key technologies have been conducted for many years . The results showed that the biomass of poplar forest with density of 2 m × 2 m and cutting period of 5 a was the highest .

通过对模型拟合，采用最佳造林密度模型求得I－69杨胶合板用材林造林密度为小于286株／hm2。立地指数小于等于16m的立地不宜用于营造胶合板用材林。

Through fitting the model , planting density of plywood timber forest of poplar clone I-69 should be not more than 286 trees per hm 2 . The land with site index not more than 16m is not suited to management of plywood timber forest .

杉木造林密度试验阶段报告

Stage report on the experiment of planting density for Cunninghamia lanceolata

巨桉纸浆原料林造林密度效应研究

Study on Planting Density Effects for Eucalyptus Grandis Pulp Forest

马尾松造纸工艺林合理造林密度的研究

Studies on the Reasonable Planting Density of the Paper-Making Technological Plantation of

半干旱黄土丘陵区造林密度试验研究

Experimental Study of Density of Afforestation in the Semiarid Rolling Loess Region

分析了不同造林密度林分生长的差异。

The difference in stand growth of various planting desity was analysed .

马尾松造林密度与林分生长效应试验

Studies of Effects of Different Afforestation Densities on Pinus massoniana Stand Growth

造林密度对毛红椿等阔叶用材树种早期生长的影响

Effect of Plantation Density on Early Growth of Six Broad-leaf Tree Species

杉木造林密度生长效应规律的研究

Effects of Densities on Growth of Chinese Fir Plantation

马尾松造林密度试验研究

Experimental Study on the Planting Density of Pinus massoniana

造林密度对I－63杨木材密度的影响

Effect of planting density on timber density in Populus deltoides CL / Harvard

29年生杉木不同造林密度生长进程分析研究

Study on Growth Process of Different Forestation Densities of 29-year-old Chinese Fir Plantation

桉树短周期工业原料林适宜造林密度的研究

Studies on the Suitable Planting Density of Eucalyptus Short-Cycle Industrial Raw Material Forests

杞柳4个优良无性系造林密度试验研究

Study on the Afforestation Density Test of Four Excellent Clones of Salix integra

木麻黄防护林不同造林密度综合评价研究

Study on comprehensive evaluation of different planting densities of Casuarina equisetifolia protection forest

日本落叶松纸浆林造林密度试验

Experiments on different densities of Larix kaempferi pulp plantation

造林密度和无性系在短周期桉树人工林早期生长表现中的作用

Role of Planting Density and Material in the Early Performance of Short-Rotation Eucalypt Plantation

马尾松不同造林密度和不同利用方式经济效果分析

The economic results analysis on masson pine at various planting density and utilization ways

肉桂不同造林密度生物量及经济效益比较

Comparison on the Biomass and Economic Benefits among Cinnamomum cassia with Different Planting Densities

杉木不同指数级不同造林密度的经济效益分析

An Economic Benefit Analysis of Different Planting Densities of Different Index Classes of Cunninghamia lanceolata

不同造林密度对培育马尾松造纸工艺林生长的影响

Effects of Different Planting Density on the Growth of Papermaking Technical Forests of Pinus massoniana Lamb

适宜造林密度范围在1536～2481株/hm2之间。

The appropriate planting density ranges from 1 536 to 2 481 tree / hm 2 .

马尾松速生丰产林不同培育目标的适宜造林密度黑荆树造林密度试验

Determining Optimum Planting Density of Masson Pine Fast-growing and High yielding Plantations for Various Cultivation Objectives