人工林改造,plantation reformation
1)plantation reformation人工林改造
2)afforestation[英][?,f?r?"ste??n][美][?"f?r?s"te??n]人工造林
1.Based on status space analysis and optim um theory and m ethod, this paper puts forw ard an optim um m odel forafforestation.应用状态空间分析和最优化理论与方法建立了一个人工造林的最优控制模型，给出了一个用数学规划求解的实
2.Species composition, structure and species diversity of communities were studied, which was formed after (afforestation in) Tieweizhai, Bishan County.从群落种类组成、结构特征和物种多样性角度对重庆市璧山县铁围寨马尾松人工造林生态恢复过程中的群落进行了研究。
3.：9 year safforestation of Schima superba showed that, in the belts with an elevation of more than 900 m, properafforestation time was the middle ten days of March;in the belts with an elevation of 500～900m ,properafforestation time was the first ten days of March;in the belts with an elevation of less than 500m, properafforestation time was the last ten days of Febuary.经 9 年来对木荷人工造林的实践：海拔 900m 以上地带，宜在 3 月中旬造林；海拔 500～900m 地带，宜在 3 月上旬造林；海拔 500m 以下地区，可在 2 月底造林。
英文短句/例句
1.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
2.The artificial afforestation area is 4.388 million hectares, and the afforestation area by the plane is 911000 hectares.其中人工造林438.8万公顷，飞播造林91.1万公顷。
3.China"s Afforested Area Comes First in the World中国人工造林面积居世界首位
4.Effects of Reforestation on Species Diversity and Soil Fertility;人工造林对植物多样性及土壤肥力的影响
5.Analysis on Current Situation of Artificial Forestation in Jinghong City and Existing Problems景洪市近年人工造林状况及存在问题分析
6.Study on Soil Physic Characters Changes with Plantation in Datong大通县人工造林对土壤物理性状影响的研究
7.Survey on the Afforesting Effect of Pinus Armandi Plantation in Sichuan Huili County四川会理县华山松人工造林成效初步研究
8.Study on Approach to Selection for Reforestation Sites by ArcGIS Software基于ArcGIS进行人工造林地块的选择方法研究
9.Effect of Adverse Climatic Conditions on Artificial Afforestation in Zhangwu Sandy Area彰武沙区不良气候条件对人工造林的影响
10.Ecological Functions and Processes in Successive Replanting Stand and Natural Regrowth Following Fallow on Clear-cutting Forestland of Chinese Fir Plantations Ecosystem;杉木林采伐迹地人工造林与自然恢复的生态功能过程研究
11.The Characteristics and the Ways of Cultivated Pinus sylvestris Forest in Forest Zone of Daxingan Mountains of Inner Mongolian内蒙古大兴安岭林区樟子松人工造林的特点与方式
12.Study on Forest Hydrological Effects and Optimal Afforest Models of Artificial Water Conservation Forest人工水源涵养林水文效应与优化造林研究
13.Evaluation on Site Quality of Plantation in Mountainous Area in Southeast of Inner Mongolia内蒙古东南部山地人工林造林立地质量评价
14.A research on the Evaluation of Afforestation and Plantation Quality in East China华东监测区营造林与人工林质量状况评价
15.Structural Characteristics of the Three Forest Plantation and the Strategies for Forest Rehabilitation三种人工林的结构特征及林分改造对策
16.Note:Total area of afforestation include 100000 hectares of planted protection forests.注：全国合计造林面积中包括军事管理区100000公顷人工营造的防护林。
17.Effect of Seedling Age on Tree Growth in Yunnan Pine Juvenile Stand苗龄差异对云南松人工幼林林木造林当年生长影响的研究
18.Anatomical Structure, Chemical Characteristics and Utilization of Bark of Acacia Artificial Forest相思人工林树皮解剖构造、化学特性与开发利用
相关短句/例句
afforestation[英][?,f?r?"ste??n][美][?"f?r?s"te??n]人工造林
1.Based on status space analysis and optim um theory and m ethod, this paper puts forw ard an optim um m odel forafforestation.应用状态空间分析和最优化理论与方法建立了一个人工造林的最优控制模型，给出了一个用数学规划求解的实
2.Species composition, structure and species diversity of communities were studied, which was formed after (afforestation in) Tieweizhai, Bishan County.从群落种类组成、结构特征和物种多样性角度对重庆市璧山县铁围寨马尾松人工造林生态恢复过程中的群落进行了研究。
3.：9 year safforestation of Schima superba showed that, in the belts with an elevation of more than 900 m, properafforestation time was the middle ten days of March;in the belts with an elevation of 500～900m ,properafforestation time was the first ten days of March;in the belts with an elevation of less than 500m, properafforestation time was the last ten days of Febuary.经 9 年来对木荷人工造林的实践：海拔 900m 以上地带，宜在 3 月中旬造林；海拔 500～900m 地带，宜在 3 月上旬造林；海拔 500m 以下地区，可在 2 月底造林。
3)artificial forestation人工造林
1.Research onartificial forestation and cultural techniques to Fraxinus manshurica;水曲柳人工造林与培育技术的研究
2.Proposals like closing hillside to facilitate afforestation,artificial forestation and species selection were made for regeneration of Bursaphelenchus xylophilus deseased pine forest.针对演替类型及更新树种存在单调贫乏的现状，结合海岛具体实际，提出封山育林、人工造林和树种选择的方向性建议，将为松村线虫病除治迹地的更新改造提供依据。
3.According to the data of forest resource inventory in 1993 and respectively,the paper analyzed the original land sort and structure,forest species structure and tree species ofartificial forestation in Jinghong city in recent years.基于1993、森林资源二类调查数据,对景洪市近年人工造林的原土地种类及结构,林种结构、树种结构等情况进行分析,认为目前人工林发展存在着林农纠纷加剧,天然林不断减少,毁林营造经济林现象突出,经济林种植比例过高,天然竹林的减少影响了动物食物来源,商品林比重过大导致林种、树种及林龄结构失衡等问题。
4)artificial afforestation人工造林
1.Preliminary report on community characteristics andartificial afforestation of Delavaya toxocarpa in karst area of Guangxi广西岩溶地区茶条木群落特征与人工造林研究初报
2.Annual runoff amount of river basin is a significant basis for water resources evaluation and its allocation in reason,while the water reduction function ofartificial afforestation is a foundation of estimating influences of soil and water conservation on annual runoff amount.流域年径流量是水资源评价与合理配置利用的重要依据,而人工造林的减水作用又是估算水土保持对河川年径流量影响的基础。
5)Plantation[英][plɑ:n"te??n][美][pl?n"te??n]人工造林
1.Study on Soil Physic Characters Changes withPlantation in Datong大通县人工造林对土壤物理性状影响的研究
2.Approach onPlantation Status in Wulan乌兰县人工造林现状探讨
6)Human reformation人工改造
延伸阅读
岩体人工改造改变岩体的组成成分或岩体结构、岩体赋存环境，以达到工程活动目的的措施。岩体改造的目标有两个方面：其一是强化或加固岩体，增强岩体的自稳能力。如为了提高隧道稳定性而用锚固、灌浆或卸载环等技术对岩体结构或围岩中应力状态进行的改造。其二是弱化岩体,增加岩体可采性和解体性,以满足工程活动要求。如在采矿过程中为增加岩体的可采性或自动冒落能力，而用注水、压裂等技术对岩体进行的弱化处理。在岩体改造工作中必须明确改造的目的和目标，以便选择能取得最佳效果的技术措施。岩体改造技术措施的选择，决定于岩体改造内容和改造对象。岩体可改造的对象有 3个方面：①组成岩体的成分──岩石；②岩体结构；③岩体赋存的环境。组成岩石的矿物是不易改造的，岩石改造的主要内容是改造其联结状态。如为了增加岩体的强度或刚度，可用灌浆的方法提高其联结力，增加其密度；为了降低其强度或刚度，可用水或酸破坏其联结能力，降低其密度。岩体结构改造的目标是增加或破坏岩体的连续性和完整性。要针对岩体结构的类型，采用不同的技术措施。如为了强化处理，对碎裂结构岩体可用预应力锚索增加作用于软弱结构面的法向应力和提高弱面强度；对板裂结构岩体，可采用预埋串层锚杆的方法提高组合板的刚度和缩短板裂体自由段长度；对完整结构或断续结构岩体，最重要的是愈合表面裂纹，提高其抗拉能力，最适宜的方法是喷射高标号砂浆。为了提高喷层的抗拉强度可增加玻璃纤维或钢纤维，比较多的是采用钢筋网。改造岩体赋存环境，多是对岩体中地下水条件进行改造，主要是通过疏干、排水或注水措施，强化或弱化岩体的力学性能。近年来对地应力条件改造也有很大进展。如利用支护和预应力锚固的方法提高环境应力，以提高岩体的自稳能力的技术，已在隧道施工中广泛采用。用切缝或钻孔的方法降低围岩刚度，使高应力水平区向岩体内部转移，提高围岩稳定性的技术，也取得了一定成果。
