1) tree growth model
林木生长模型
1.
plantation and TM image information in Northeast plain was analyzed,and then the relationship among tree growth,vegetative factors,and soil factors were established,and the site factors-tree growth model also can be matched.
利用遥感技术和多元回归方法,分析了东北平原杨树人工林的立地因子与TM(thematic mapper)影像的关系,建立杨树林生长与植被因子和土壤因子的关系,拟合立地因子——林木生长模型。
2) forest growth
林木生长
1.
In order to approach the effect of hill closing for forestation on forest growth and the change of forest component with tree species and forest soil after closing, this research investigates and analyses some sample sites in 4 sorts of forest stands formed with different hill closing years.
为了探讨封山育林对林木生长的影响和封山育林后林分树种组成及林地土壤的变化,在4种不同封禁年限的林分内,分别设置样地和小样方进行调查和分析,结果表明:封山育林能保证幼树较高的成活率,显著提高林分的生长量;随着封山育林时间的延长,在乔木层和幼树层中,亚热带常绿阔叶树种种类和数量明显增加,物种多样性增加,林分的组成和结构朝着更稳定的方向发展, 森林的生态效益得到更充分的发挥;封山育林能明显改善林地土壤的物理性质,提高土壤中有机质、全N和速效K的含量,增加腐殖质层厚度,使土壤肥力得到提高。
3) tree growth
林木生长
1.
Relationship between soil fertility and tree growth in the broad-leaved Pinus korariensis forest at different growth periods;
红松阔叶混交林不同演替阶段土壤肥力与林木生长的关系
2.
Taking Larix principis-rupprechtii plantation with different density (225、525、645、750、855 plant per hm~2) from 35 years old to 39 years old as research object , effects about density to tree growth and under-tree herb species diversity are studied.
本文以塞罕坝机械林场林龄35年-林龄39年时5种不同林分密度(225,525,645,750,855株/hm~2)下的华北落叶松人工林为研究对象,通过研究林分密度对林木生长及林下草本植物多样性的影响,找出了其中存在的变化规律。
3.
To study forest tree growth and its understory carbon reserves responsing to nitrogen deposition, a field experiment had been conducted in a 12-year-old Chinese fir plantation for five years in Sanming, northwestern Fujian.
33%,表明低氮处理(N1)促进了林木的生长,而中-高氮处理在一定程度上抑制了林木生长。
4) Growth
[英][ɡrəʊθ] [美][groθ]
林木生长
1.
The Effect of Pruning on Growth and Wood Mechanical Properties of Pinus koraiensis;
修枝对红松人工林林木生长和木材力学性质的影响
5) Individual Tree Growth Model
单木生长模型
1.
Study of GIS and ANN Based Individual Tree Growth Model;
基于GIS和ANN的时空相关单木生长模型研究
6) stand growth model
林分生长模型
1.
Taking the stand in forestry as the study object,secondary forest investigation data and relative graphics as the basic data,the stand growth model was selected,professional vector was manipulated by the application of ScanIn 5.
将林分作为研究对象,以森林二类调查数据和相关图形为基础数据资料,选择林分生长模型,运用ScanIn地图矢量化软件系统进行专业的矢量化,借助于GIS相关软件建立属性数据库与图形数据库并运用ID连接,用二次开发语言VB编程开发功能,形成林分经营管理空间数据库,力求实现计算机分析、预测功能的更准确、更切实、更科学。
2.
The variables in stand growth model were selected through analyzing the significant influences among the variables.
在林分生长模型建立中,通过分析变量间的显著影响选择变量。
补充资料：林木
1.树林。 2.木材。
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