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agroforestry systems
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  农林复合系统
     Based on the review of achievements in classification of agroforestry systems in the world, the classification of agroforestry systems on the Loess Plateau and its principles are put forward according to local conditions, which are development of agroforestry systems, natural resources, the needs of practice and scientific research of agroforestry systems and rural economic development.
     该文在回顾总结国内外有关农林复合系统分类体系研究成果的基础上,根据我国黄土区的自然、社会经济、农林复合系统发展现状等具体情况,以及黄土区农林复合系统科研、生产实践及农村经济发展的需要,提出了黄土区农林复合系统分类原则,以及适宜于该区的农林复合系统分类体系.
短句来源
     Study on Classification of Agroforestry Systems in Karst Section of Guizhou
     贵州喀斯特地区农林复合系统的分类
短句来源
     Evaluation of Agroforestry Systems forSustainable Agricultural Development in China
     中国可持续农业发展中的农林复合系统评价
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     So both economic benefit and environmental benefit can be obtained in T1 as long as the agroforestry systems were managed scientifically the pesticides and fertilizer were properly used.
     由此可见,在苹果——农作物复合为主的T_1型复合系统的种植中,只要注意科学管理和合理施用农药、化肥,就能做到经济.11.黄土残源沟壑区农林复合系统环境质量评价
短句来源
     Environmental assessment indicator system of agroforestry systems and its application in Weibei Upland of the Loess Plateau
     渭北旱塬农林复合系统环境评价指标体系研究与应用
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  农林系统
     The characteristics of agroforestry systems microclimate are:(1)Component values of heat balance are positive in day time but negative at night.
     农林系统的小气候特征是 :(1)热量平衡的各分量白天为正值 ,夜间为负值。
短句来源
     Research progress in agroforestry systems
     农林系统研究进展
短句来源
     A Study on the Pattern of Plant Transpiration Water Consumption in Agroforestry Systems in Sea coast Areas
     海岸带复合农林系统植物蒸腾耗水规律研究
短句来源
     3) Alder seemed to have the most desirable rooting characteristics for agroforestry systems. Most fine roots were concentrated in the upper 10 cm of the soil,but coarse roots were concentrated at 10-20 cm depth. The fine root biomass (FRB) in intercropping was 5% greater than when grown as a fallow tree.
     桤木根系特征似乎最适合混农林系统,其细根生物量(FRB)集中于土壤剖面上层10cm范围内,在此范围内,FRB在“树+农作物”间作条件下比在“只有树”条件下高5%;
短句来源
     A review was made on concepts of agroforestry, principles and findings in selection of plant species component and their arrangements in agroforestry systems, and functions and practical effects of agroforestry in providing a variety of agricultural products, energy, fodder, and mulching materials,improving ecological environment and soil fertility conservation of soil and water,enhancing economic efficiency in developping countries.
     本文就目前发展中国家在农林系统的概念,农林作物组分的选择及其组合原理和成果,农林系统在提供多种农产品,改善生态环境,水土保持,提高土壤肥力,提供能源、饲科、覆盖物及经济效益等方面的作用和实践效果作了分析和比较,并列出了国外在农林系统的研究与实践中常用的、具有多种功能的29属57个物种。
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  “agroforestry systems”译为未确定词的双语例句
     For most of the agroforestry systems the net costs are low, especially in the south, the southwest, and the north of China, though their initial investments are high.
     大多数农用林生态系统虽然它们的初始成本很高,但由于收益很高,所以净成本是比较低的,特别是在南方区、西南区,在华北也比较低。
短句来源
     Construciton and Management on Agroforestry Systems in Outskirts of a City
     城郊农林复合生态系统建设与管理
短句来源
     An Approach to the Evaluation Index System of Agroforestry Systems
     林农复合生态系统评价指标体系探讨
短句来源
     In comparing with farmland system(FLS), the energy efficiency of thes, three agroforestry systems increases by 11. 88,14. 45 and 28. 25%, respectively. From the viewpoint of energy, MTA system is the optimal one.
     群落的光能利用率分别为1.000,1.047和1.138%.群落的能量效率分别比传统的农田系统增加11.83、14.45和28.25%.在农业林业系统中,苹果-小麦·花生群落类型为最佳群落类型.
短句来源
     Energy study on agroforestry systems in northern Hennan Huanghuaihai plain
     黄淮海平原豫北地区农林业系统的能量研究
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  agroforestry systems
Agroforestry systems connected to patches of riparian forest probably play an important role in the ecology and conservation of B.
      
Decomposition dynamics, nutrient mineralization and cell-wall degradation of leaf litter of Bambusa tulda and Dendrocalamus hamiltonii were studied in bamboo-based traditional agroforestry systems of Arunachal Pradesh.
      
For the practicing of different agroforestry systems both Zones have lost their original characters of Sal forest.
      
Growth characteristics of multipurpose tree species, crop productivity and soil properties in agroforestry systems under subtrop
      
champaca of high timber value could be harnessed as viable agroforestry systems.
      
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According to the national reports on activities related to poplar andwillow cultivation, exploitation and utilization for the period of 1984-1987written by 18 member countries of the International Poplar Commission.a brief introduction to the recent development of poplar in these coun-tries is given. Research achievements in poplar breeding and short rota-tion intensive cultivation in foreign countries are summarized. It ispresented that the area of intensively cultivated poplar plantations withshort rotation...

According to the national reports on activities related to poplar andwillow cultivation, exploitation and utilization for the period of 1984-1987written by 18 member countries of the International Poplar Commission.a brief introduction to the recent development of poplar in these coun-tries is given. Research achievements in poplar breeding and short rota-tion intensive cultivation in foreign countries are summarized. It ispresented that the area of intensively cultivated poplar plantations withshort rotation have extended, the annual production of poplar wood hasgreatly increased, and the wood shortage has relaxed to some extent inmany countries. A proposal on initiating ideotype trees breeding which isof far-reaching significance in the development of poplar cultivation formultipurpose agroforestry systems is introduced. An investigation onPopulus euphratica is introduced. The comments and suggestion on impro-vement of poplar cultivation in China made by foreign experts duringthe study tour are reported,

本文介绍了参加18届国际杨树会议的17个会员国的杨树栽培新进展、杨树育种和短轮伐期集约栽培的研究动态和成果,还报道了与会外国专家的观感。

A review was made on concepts of agroforestry, principles and findings in selection of plant species component and their arrangements in agroforestry systems, and functions and practical effects of agroforestry in providing a variety of agricultural products, energy, fodder, and mulching materials,improving ecological environment and soil fertility conservation of soil and water,enhancing economic efficiency in developping countries. A list of 57 species in 29 genera which were considered to have...

A review was made on concepts of agroforestry, principles and findings in selection of plant species component and their arrangements in agroforestry systems, and functions and practical effects of agroforestry in providing a variety of agricultural products, energy, fodder, and mulching materials,improving ecological environment and soil fertility conservation of soil and water,enhancing economic efficiency in developping countries. A list of 57 species in 29 genera which were considered to have multiple functions and often used in research or successfully applied to actual agroforestry systems was given in the paper. The author suggested that it is necessary in China to make more investigations and deep researches on potential plant components and diversified agroforestry systems and on ecological functions of each component and the system as a whole, and to do multidis-ciplinary cooperative research.

本文就目前发展中国家在农林系统的概念,农林作物组分的选择及其组合原理和成果,农林系统在提供多种农产品,改善生态环境,水土保持,提高土壤肥力,提供能源、饲科、覆盖物及经济效益等方面的作用和实践效果作了分析和比较,并列出了国外在农林系统的研究与实践中常用的、具有多种功能的29属57个物种。作者认为,在我国有必要进一步拓宽农林作物组分及多样化农林系统的调查与研究;各组分及农林系统生态功能的研究;开展多学科合作研究。

This paper discusses the methods of economic evaluation of agr-oforestry system from the economic viewpoint, and describes the meaningand economic characteristics of agroforestry system, and the purpose, con-tent and features of the economic evaluation of agroforestry. The followingpoints are emphatically discussed: 1 .benefit-cost analysis, 2. productionfunction analysis, 3. the application of economic feasibility analysis inthe economic evaluation of agroforestry.

本文从经济学角度对农林系统的经济评价方法进行了探讨和研究。介绍了农林系统的涵义及其经济特征,农林系统经济评价的目的、内容及其特点,并重点讨论了收益成本分析、生产函数边际分析和经济可行性分析在农林系统经济评价中的具体应用。

 
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