人工林,plantation
1)plantation[英][plɑ:n"te??n][美][pl?n"te??n]人工林
1.Wood physical-mechanical properties of Taiwania flousiana compared to Cunninghamia lanceolata forplantation development;不同树龄秃杉与杉木人工林木材物理力学性质的比较
2.Shrinkage of smallwood of Cryptomeria japonica and Cunninghamia lanceolataplantation;人工林日本柳杉和杉木小径材干缩性的研究
3.Mechanical properties of juvenile and mature wood of Pinus densiflora fromplantations;人工林赤松幼龄材与成熟材力学性质的比较
英文短句/例句
1.Studying on Agro-forestry Modes of Young Eucalyptus Plantation;桉树人工林中幼林林农间作模式研究
2.Carbon Storage and Allocation in 26-Year-Old Phobe bournei and Cunninghamia lanceolata Plantations26年生楠木人工林和杉木人工林C库及分配
3.Study on the Forest 3D Visualization of Mongolian Scots Pine in Plantation;樟子松人工林林分三维可视化的研究
4.Model Basis for Study on Growth Process of Plantation Stands人工林林分生长过程研究的模型基础
5.Succession Trend of Larch Plantation Communities in Forest Regions of Northeast China东北林区落叶松人工林群落演替趋势
parative Study for Undergrowth Vegetation Biomass of Eucalyptus Plantations and Natural Forest;桉树人工林与天然林林下植被生物量比较研究
7.Cost-effectiveness Analysis of Plantation and Natural Forests--A Case Study of Artificial Larch and Natural-fir in Jingouling Forest Farm人工林与天然林经济效益分析——以金沟岭林场人工落叶松林与天然云冷杉林为例
8.Evaluation of Forest Carbon-sink--A Case Study on Artificial Plantation of the Three-north Shelterbelt Forest System Program in China;森林碳汇价值评价——三北防护林体系工程人工林案例
9.STUDY ON THE WHOLE FOREST STAND OF ARTIFICIAL JAPANESE LARCH FOREST日本落叶松人工林生长预测的全林分模型研究
10.Study on Stand Structure of Larix Kaempferi Artificial Forest and Its Increment Prediction;日本落叶松人工林林分结构与生长量预测研究
11.The Soil Available Carbon in a Quercus Variabilis Forest and Pinus Taeda Plantation in Xiashu Forest Experimental Site, Southeastern China;次生栎林与火炬松人工林土壤有效碳研究
12.The Growth Models of Slash Pine Plantation and Stand Visualization Simulation;湿地松人工林生长模型及林分可视化模拟
13.Soil Respiration of Temperate Secondary Forest and Larix Gmelinii Plantation in Northeastern China;东北温带次生林与落叶松人工林的土壤呼吸
14.China"s artificial gardens are of supernatural workmanship.中国人工园林，巧夺天工。
15.Drinker apparatus德林克氏人工呼吸器
16.The gardener dug out the weeds园林工人铲除了杂草。
17.Status of Artificial Timber Forest Constriction and Its Future Development;用材林人工造林的现状及今后的发展
18.Study on Stand Structure and Growth Law of Near-mature Phoebe bourmei Plantation楠木人工近熟林林分结构与生长规律
相关短句/例句
Artificial forest人工林
1.The technology current situation, problem and tendency onthe development of extensive process and high-effective utilization of the artificial forest;国内外人工林深加工技术现状、问题及发展趋势
2.Soil fertility quality of artificial forest in the Hilly-gully region of Loess Plateau;黄土丘陵区人工林地土壤肥力质量
3.Summer bird diversity in three different artificial forest in suburbs of Nanning;南宁市郊三种人工林型夏季鸟类多样性初步分析
3)Plantations[英][pl?n"tei??n][美][pl?n"te??n]人工林
1.Fractal Analysis on Radial Variation of Earlywood from Larix gmeliniiPlantations;人工林落叶松木材早材宽度径向变异的分形分析
2.Site Classification and Quality Appraisal of Picea koraiensisPlantations;红皮云杉人工林立地分类与质量评价
3.Model for forecasting the electric field intensity of UHF wireless frequency band in plantations.;人工林UHF频段电波传播场强预测模型
4)planted forest人工林
1.Infiltrability of muddy water and universal model for both muddy water and tap water inplanted forest site;人工林地浑水入渗性能与通用入渗模型
2.Soil fertility evaluation ofplanted forest land on the hilly-gullied Loess Plateau;黄土丘陵区人工林地土壤肥力评价
3.Quantity characteristics of plant community under tree-layers ofplanted forests in semi-arid windy area of north Shaanxi Province;陕北半干旱风沙区人工林下植物群落数量特征研究
5)plantation forest人工林
1.Water and soil conservation function of typicalplantation forest ecosystems in semi-arid region of Western Liaoning Province.;辽西半干旱区典型人工林生态系统的水土保持功能
2.A study on the radial variation patterns of wood characteristics of Alnus cremastogyne inplantation forest;桤木人工林木材性质的径向变异模式研究
3.The short period effect of selective cutting(low intensity) on the physical and chemical properties of soil inplantation forest in rotation was analyzed quantitatively.定量分析轻度择伐对人工林林地土壤理化性质的短期影响,结果表明:轻度择伐后林地土壤理化性质受到一定程度的影响,但并不明显。
6)artificial trees人工林木
延伸阅读
人工林人工林man-made forestrengong}in人工林(~-made forest)以人工方式形成的森林。造林方式可分为直播(种籽)造林、植苗造林、分生造林、飞机播种造林和人工促进天然更新等。根据考古资料，中国人工造林始于新石器时代，有文字记载的不晚子周代。世界林业发达国家大面积营造人工林已有2(X)年以上的历史。据统计，20世纪80年代初全世界人工林面积己有1 .40亿公顷。中国大面积人工林的营造是在中华人民共和国建立后开始的，到目前止，人工林保存面积达2 146余万公顷，蓄积量达41670万立方米(参见彩图插页第52页)。人工林的经营目的明确，造林地和树种选择，林分空间结构和造林技术，以及抚育措施都是由经营者按其经营目的决定的。人工林与天然林相比，有如下特点:①按经营目的选择造林树种，其森林更符合人们的需要。②一般为同龄林，林相整齐。③森林树种组成较少，层次结构较单纯。④个体的水平分布均匀，布局较合理。⑤森林个体分化程度相对较小，但个体与群体的矛盾比较突出。⑥生产周期较短，比较速生丰产。由于天然林的过度采伐，致使木材供应紧张和生态环境恶化，人们不得不大量营造人工林来弥补森林的不足。但人工林的大量发展，已暴露出不少问题，如森林稳定性差、病虫害严重、地力衰退等。它关系到人工林持续发展的大问题，因此，已引起世界各国林学家的极大关注。一般来说，人工林地力衰退 人工林毛白杨 (《中国国土 画册》)主要是树种选用不当，对立地条件不适应，以及人为管理方法不善的结果。为此，需要采取一系列综合措施，包括抗性育种、混交间作、施肥改土及必要的生物和化学防治措施等，关键还在于建立一个具有结构比较复杂、良性循环的稳定的人工林生态系统(参见彩图插页第52页)。(赖世登)
