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afforestation     
相关语句
  造林
     Study on Afforestation Decision Support Model Based on COM GIS
     基于组件GIS的造林决策支持模型的研究
短句来源
     Studies on Water Consumption Characteristics of Main Plantation Tree Species and Technoloy of Drought Resistance for Afforestation in Northern China
     我国北方主要造林树种耗水特性及抗旱造林技术研究
短句来源
     Theoretical Analysis of Two Afforestation Preparation Projects
     两种造林整地工程的理论分析
短句来源
     Ecological value of A Part Afforestation Tree Species
     我国部分造林树种的生态值
短句来源
     Environmental Guidelines for Afforestation Projects
     造林工程的环境指南
短句来源
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  绿化
     (4) The project will cause a biomass loss of the appraisement district to a degree of 68.567 2 T·km~(-2)·a~(-1), with the afforestation to compensation contract of 12.165 9 T·km~(-2)·a~(-1), and the compensation rate contract 14.8%22.3%.
     工程建设将造成评价区生物量损失约68.5672T·km-2·a-1,绿化补偿约12.1659T·km-2·a-1。 补偿率约为14.8%~22.3%。
短句来源
     Factors Influencing Urban Afforestation Management
     影响城市绿化养护管理水平的几大因素
短句来源
     Descriptions were made on effect of highway construction and operation on environment, and on importance of highway afforestation to environment improvement.
     叙述了公路建设以及公路运营对环境的影响和破坏,阐述了公路绿化对公路环境改善的重要作用。
短句来源
     Exploitation and utilization of 6 economic tree species used for afforestation
     6个绿化经济树种的开发利用
短句来源
     Quantitative evaluation for the ecological benefit of afforestation is realized through measuring and analyzing the 493. 6km2 green lands in the gardens of Beijing.
     以北京城市建成区493.6km~2范围内的园林绿地为研究对象,通过测定分析,实现对绿化生态效益的定量评价;
短句来源
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  植树造林
     Results also show that afforestation in the Hanjiang River basin might raise evapotranspiration by 2.1-11.1 % and reduce runoff by 1.3-7.5 %, and cut down and delay flood peaks effectively.
     在汉江汉中站集水区域植树造林将可能使年均蒸散发量增加2.1%~11.1%,年均径流量减少1.3%~7.5%,可以有效地削减洪峰流量、延缓洪峰;
短句来源
     However,the ecological contribution ratio of the meadow degradationg,afforestation and conceding the cultivated land to forest and grass in Tuyou County are 44.23%,18.21% and 10.36% respectively. This indicates that afforestation and conceding the cultivated land to forest and grass play a certain role in the improvement of Tuyou's general ecological environment.
     而后者草地退化、植树造林和退耕还林还草的生态贡献率分别是44.23%,18.21%和10.36%,植树造林和退耕还林还草对区域生态环境的改善发挥了一定作用。
短句来源
     Innovative Management and Practice in Japan-Loaned Afforestation Project in Shaanxi
     日元贷款陕西植树造林项目管理创新与实践
短句来源
     In southern China, 37% of land degradation caused by deforestation, 35% by slopeland reclamation, 18% by improper afforestation, and 10% by industrial, mining and transportation construction.
     在中国南方,因滥伐导致的土地退化占37%,陡坡开垦占35%,不适当植树造林占18%,工矿交通建设占10%。
短句来源
     The paper proposed that afforestation should be expanded to improve the ecological environment and the population control and industrial structure adjustment should be made to guarantee the regional economy′s sustainable development.
     加强植树造林来改善生态环境 ,控制人口增长、调整产业结构等措施保障区域经济的可持续发展
短句来源
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  荒山造林
     Application of herbicides to afforestation in barren hills suitable for forest
     化学除草剂在宜林荒山造林中的应用
短句来源
     The Investigation and Discussion on Two New Approaches of Afforestation on the Barren Mountains in Sanmen County
     三门县两种荒山造林新形式的调查与探讨
短句来源
     To meet the needs of afforestation in particular natural conditions in Yuanmou dry and hot valley, the quantitative selection research of drought resistant and heat resistant afforestation species was carried out.
     针对元谋干热河谷区特殊的自然条件,为荒山造林所需,开展抗旱耐热造林树种的定量选择研究。
短句来源
     TCP-transpiration controlling preparation could notably increase survival rate of seedling for barren hill afforestation.
     荒山造林中使用TCP植物蒸腾抑制剂能显著提高苗木造林成活率。
短句来源
     In order to study the effects of applying herbicides to afforestation in barren hills, the random and orthogonal tests of applying a sort of single and mixed herbicides were carried out in Fu'an City of Fujian Province.
     为探索化学除草剂在宜林荒山造林中的应用效果,在福建省福安市进行了多种高效林用除草剂单用、混用除草的随机试验和正交试验研究。
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      afforestation
    korshinski afforestation can increase the content of aggregates.
          
    Division of afforestation site type in the watershed of Wangjiagou, West Shanxi through GIS
          
    To promote afforestation in sandy lands and increase the effects of prevention and control of desertification, the application of a new drought-resistant product-solid water and foliar fertilizer "Shifengle"-was studied.
          
    Afforestation survival rates of Salix psammophila and Hedysarum mongolicum reached over 90%.
          
    Water consumption of a single tree from the main afforestation tree species in Western Shanxi Province, a loess area
          
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    A summary of 30-year's experimence of afforestation in Xishan Ex-perimental Forest, Beijing. Data of growth of more than 20 tree species,planted under various site condtions in this region were collected and analysed.From these data correlation between tree growth and various site factors werecalculated with mathematical-statistical methods.Based on these results,the oldtable of site types having been adopted by members of this Forest was modifiedand a new one was made which recommends more suitable species...

    A summary of 30-year's experimence of afforestation in Xishan Ex-perimental Forest, Beijing. Data of growth of more than 20 tree species,planted under various site condtions in this region were collected and analysed.From these data correlation between tree growth and various site factors werecalculated with mathematical-statistical methods.Based on these results,the oldtable of site types having been adopted by members of this Forest was modifiedand a new one was made which recommends more suitable species with eachgroup of site types in local planting.

    本文总结了北京市西山试验林场三十年来的造林经验。普遍调查了二十多个造林树种在各种立地条件下的生长情况,在此基础上,运用数理统计方法分折了各树种的生长与各立地因子之间的相互关系。以此为依据修改了西山林场的立地条件类型表,提出了新的方案,并为各立地类型组提出了适用造林树种的建议。

    Witches broom on Paulownia is one of the most serious diseases inChina.In havily infected afforestation more than 80% of the cultivaedtrees were infected.Axillary buds proliferate and produce many se-condary and tertiary shoots which are covered with small yellow leavesThe flowers become phylloid.Branches and shoots of infected treesusually showed die back in the current year and it might be affect itsgrowth rate in the following years.Typical symptom appeared on healthy seedling by graft-inoculationwith...

    Witches broom on Paulownia is one of the most serious diseases inChina.In havily infected afforestation more than 80% of the cultivaedtrees were infected.Axillary buds proliferate and produce many se-condary and tertiary shoots which are covered with small yellow leavesThe flowers become phylloid.Branches and shoots of infected treesusually showed die back in the current year and it might be affect itsgrowth rate in the following years.Typical symptom appeared on healthy seedling by graft-inoculationwith diseased barks.Mycoplasma-like bodies could be seen in the se-veral elements of phloem tissue under electron microscope.The unit-membrane of MLO are 10 nm thick and are 200-820 nm in diameter.They are spherical and ellipsoidal.Most of the seedling derived fromthe diseased root-cutting are able to produce witches′broom.The disea-se could not be transmitted by sap inoculation or through seed.Diseased root-cuttings should dip in hot water between 40℃ and 50℃for 30 minutes,or in 1000 ppm tetracycline in water before plant.These methods could effectively control the disease for several years.Inject 10000 ppm of tetracycline in water or 5% sodium borate intothe diseased trunk or soaked by its root would reduce the develop-ment of the disease in some extents.

    泡桐丛枝病是影响泡桐生长的严重病害,此病在我国分布甚广,尤以华北平原为害严重。最常见病状为丛枝型,极少见花变枝叶型。健康泡桐实生苗经病树皮嫁接表现典型丛枝病状。用电镜观察病枝叶的超薄切片,在韧皮部筛管中发现有大量类菌原体(MLO)。类菌原体圆形或椭圆形,直径约为200—820nm,具有10nm厚的单位膜。用病枝叶汁液接种不能传病。病树的种子不带毒,采用种子育苗可减少丛枝病的发生。用病树根及带毒苗繁殖可以传病。防治丛枝病可推广种子繁殖。严禁从病区引种种根和苗木。用40—50℃温水浸种根30分钟或用1000单位四环素溶液浸种根12小时。用10000单位四环素、5%硼酸钠注入病树干基部髓心或用根吸方法,都有明显治疗效果。

    The afforestation techniques and experiences on southward slopes in Greater Khingan Mrs. Forest District are analysed and summarized in this study. In preparation of site, the methods adopted included horizontal ditch, horizontal platform,scale pit and so on, which were capable of holding more water. Suitable species were selected according to different soil conditions.

    本文总结分析了大兴安岭干旱阳坡的造林技术与经验,对解决干旱阳坡及其它类似立地条件下的造林技术问题提出改进措施。

     
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