1) stand density
林分密度
1.
The structure characters of broad-leaved woodland I.The relationship between stand age and stand density;
阔叶林林分结构特征 I.林分年龄与林分密度的关系
2.
Effects of Pinus massoniana plantation stand density on understory vegetation and soil properties
马尾松人工林林分密度对林下植被及土壤性质的影响
3.
Relations of stand density and the biomass of the artificial young Larix principis-rupprechtii forest
华北落叶松人工幼林林分密度与生物量的关系
2) Forest density
林分密度
1.
In this paper the relationships between forest density and index of decline disease, and soil moisture content were studied and determined in Pinus taeda plantations in Anhui province.
对安徽省火炬松林分密度与衰退病的感病指数和土壤含水量的关系分别进行了研究 ,结果表明 :林分密度与衰退病和土壤含水量关系十分密切 ,在一定的树龄和密度范围内 ,林分密度与衰退病的病情指数呈正相关 ;与土壤含水量 (在干旱条件下 )呈负相关。
2.
Through real surveying material, the paper determines the influence of forest density and felling intensity to stander damage and finds out changing regulation.
本文通过兴隆林业局的实测资料,确定出林分密度和采伐强度对保留木损伤的影响,找出其变化规律,认为:①随着林分密度的增加,保留木损伤率也增加。
3) stand reserved density
林分保留密度
4) stand density index
林分密度指数
1.
Based on the model compatibility, the whole stand model for papermaking and raw material stand of masson pine has been made by establishing the dynamic predicting model of stand density index with Korf equation in accordance with the auxiliary variables of age, site index and original planting density.
以年龄、地位指数、初植密度为辅助变量 ,利用 Korf方程建立林分密度指数动态预估模型 ,从模型相容性思想出发 ,研制了马尾松造纸原料林全林分模型 ,模型经检验精度高、误差小 ,且能反映林分测树因子动态变化及因子之间关系的基本规律 ;最后给出了模拟已知初始密度林分自然生长过程的实
5) Rational density of stands
林分合理密度
6) forest stand density control diagram
林分密度管理图
1.
This paper formulates the definition and functions of the system yield table in comparison with the conventional yield table and forest stand density control diagram by overview.
林分密度管理图是根据林分密度效果编制的可预测林分平均收获的图。
补充资料：非密度制约因素(见密度制约因素)
非密度制约因素(见密度制约因素)
l焦非密度制约因素见生态因素、密度制约后
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条