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forest and grassland
相关语句
  林草
     Primary Research of Construction of Forest and Grassland with High Output in Malian River Basin
     马莲河流域高效林草建设初探
短句来源
     Study on Interactions Neighborhood Interference and Time Dynamic of Nutrient Elements among Three Forest and Grassland
     三种林草模式邻体干扰和养分时间动态研究
短句来源
     Compared with the soil background pH in 1989 when the forest and grassland experimental zone started, the pH in topsoil all decreased at different degrees in three vegetation stands. Related to the type of vegetation stands, the range of pH decrease is the largest in coniferous forest (0.28 pH unit), then in the broadleaf forest (0.19 pH unit), and the smallest in grassland (0.12 pH unit).
     与1989 年林草生态试验区建立时的土壤pH 比较,三种立地表层土壤pH 均有不同程度下降,下降幅度与立地类型有关,针叶林下降最大(0.28 pH 单位),阔叶林其次(0.19 pH单位),草地最小(0.12 pH 单位)。
短句来源
     To a large extent, control soil and water losses and establish benign eco-environment on Loess Plateau depending on reparation of vegetation overlay environment with priority to forest and grassland.
     黄土高原水土流失的治理与良性生态环境的建立,在很大程度上有赖于以林草为主的良好的植被覆盖环境的恢复。
短句来源
     Discussion on Later Work of Converting Slope Farmland into Forest and Grassland in Guyuan
     固原市发展退耕还林草后续产业探讨
短句来源
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  森林和草地
     A COMPARISON OF HYDROLOGICAL BEHAVIORS OF FOREST AND GRASSLAND WATERSHEDS IN GULLY REGION OF THE LOESS PLATEAU
     黄土高原沟壑区森林和草地小流域水文行为的比较研究
短句来源
  林草业
     Harness of the lake should be a strategic task and paid much attention in the development strategy of the west China with clear target, forest and grassland construction should be taken as regional basic industry to make full effort to extend water saving irrigation techniques, strengthen protection of water resources and biological varieties.
     在实施西部地区大开发战略中 ,要把该区治理作为一项战略性任务来抓 ,明确治理目标 ,把林草业的建设作为区域基础产业 ,全力推行节水灌溉技术 ,加强涵养水源和生物多样性保护
短句来源
  “forest and grassland”译为未确定词的双语例句
     Results showed that the project construction would cause reduction of forest and grassland by 3.45hm2 and with dominant degree drop from 58.30% to 57.41%.
     通过对工程建成前后各种土地类型的优势度值的变化分析得出:工程建设中会造成林草地减少约3.45hm2,优势度由原来的58.30%下降到57.41%,仅下降0.89%;
短句来源
     There is a little water storage in non-capillary pore of forest soil, 233.5—1088.6t/ha in the arbor forest, 390—669t/ha in the bush forest, and 236—475t/ha in the grassland, thus water infiltration rate of soil surface layer is arbor forest, bush forest and grassland from higher to lower.
     林区土壤非毛管孔隙贮水量少,乔木林地233.5—1088.6t/ha,灌木林地390—669t/ha,草地236—475t/ha,土壤表层水分入渗率从高到低为乔木林地、灌木林地、草地。
短句来源
     Soc content of forest and grassland were 3.59-15.18 g·kg~(-1)and 5.08-13.78 g·kg~(-1) respectively in valley.
     沟道内林地SOC含量为3.59~15.18 g·kg~(-1),草地5.08~13.78g·kg~(-1)。 不同土地利用方式下SOC含量均随土层的加深而降低,但下降幅度不同。
短句来源
     The results show that TM3,4,5 is the optimal combination for classifying cultivated,forest and grassland,and that TM1,4,5 is the optimal combination for classifying residential area and water body.
     结果表明:TM1,4,5组合为解译居民点和水域的最佳波段组合,TM3,4,5组合为解译耕地、林地和草地的最佳波段组合;
短句来源
     Analysis on the Differential Mode of Financial Subsidy Policy on Cropland Conversion to Forest and Grassland Projects——Take 81 counties in Shaanxi province as the case
     退耕还林工程差别化补贴模式实证分析——以陕西81个县为例
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  forest and grassland
Bacteria with similarity to those typically found in forest and grassland soils were documented at the three sites with the lowest levels of bioavailable metals.
      
TAC originates mostly from humid tropics (46 %) and temperate forest and grassland (31 %), compared to boreal forest (14 %), savannah and sub-arid regions (5 %), and tundra (4 %).
      
and from forest and grassland sites in southern Sweden, a range of simple, daily soil moisture deficit models were tested.
      
Soil-moisture deficit simulations with models of varying complexity for forest and grassland sites in Sweden and the U.K.
      
Four PFTs of forest and grassland woody species best described woody species community patterns in the grassland associated to elapsed time since fire.
      
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Hcmipteran insects were collected from 1984 to 1985 at 10 plots located at western slope of the Ailao Mountain (24°32'N, 101°01'E, alt. 1150-2700m) in Jingdung County of Yunnan Province. The Pielou (1975) hierarchical diversity (H'(SGF)), richness (S) and evenness (j) formula were used to analyze the community construction. The results are as follows:1. The 594 hetnipteran insect specimens collected were found belonging to 15 families, 56 genera and 88 species, of which 70% are endemic and of Oriental origin.2....

Hcmipteran insects were collected from 1984 to 1985 at 10 plots located at western slope of the Ailao Mountain (24°32'N, 101°01'E, alt. 1150-2700m) in Jingdung County of Yunnan Province. The Pielou (1975) hierarchical diversity (H'(SGF)), richness (S) and evenness (j) formula were used to analyze the community construction. The results are as follows:1. The 594 hetnipteran insect specimens collected were found belonging to 15 families, 56 genera and 88 species, of which 70% are endemic and of Oriental origin.2. An analysis of the distributional pattern of the genera and species shows that the tropical-Asian andl endemic types are dominant, indicating the prevalence of endemism in this area.3. The diversity and richness are higher in the forests of Pinus yunnanensis and P. khasya var. longibanemis and lower in mountain top dwarf moss forests and grassland of Eupa-torium adtnophorum. The analysis indicates that richness cannot replace diversity.

本文根据1984—1985年在云南哀牢山北段西坡景东川河坝至徐家坝山顶的垂直面上,选定10个不同植被类型的固定样地,分季节采虫与观察,主要就不同样地内蝽类的种群组成、数量、区系成份、分布型、群落结构以及与植被的关系等进行研究和探讨。

The rainfall interception in canopy of main forest types, litter storage in forest lands, dynamic changes in water contents, as well as its effect on rainfall interception in Liupanshan forests have been determined in this paper. The infiltration capacity of soil for water and its related factors have also been analysed. It was shown that the interception of rainfall in canopy of main forest types is about 16.2—29.1%, litter storage is 10—12 t/ha, its minimum water-holding capacity is equivalent to the rainfall...

The rainfall interception in canopy of main forest types, litter storage in forest lands, dynamic changes in water contents, as well as its effect on rainfall interception in Liupanshan forests have been determined in this paper. The infiltration capacity of soil for water and its related factors have also been analysed. It was shown that the interception of rainfall in canopy of main forest types is about 16.2—29.1%, litter storage is 10—12 t/ha, its minimum water-holding capacity is equivalent to the rainfall in 3—6mm, the interception of mainfall in litter is 5.6—13.1%. There is a little water storage in non-capillary pore of forest soil, 233.5—1088.6t/ha in the arbor forest, 390—669t/ha in the bush forest, and 236—475t/ha in the grassland, thus water infiltration rate of soil surface layer is arbor forest, bush forest and grassland from higher to lower.

本文测定了六盘山林区主要森林类型的树冠截留降水作用、林地枯枝落叶蓄积量、含水量的动态变化和对降水的截留量,分析了土壤水分入渗能力及其影响因素。结果表明,六盘山林区主要森林类型树冠截留量为16.2—29.1%;枯枝落叶层蓄积量为10—12t/ha,最大持水量相当于3—6mm的降雨,该层对降雨的截留量5.6—13.1%;林区土壤非毛管孔隙贮水量少,乔木林地233.5—1088.6t/ha,灌木林地390—669t/ha,草地236—475t/ha,土壤表层水分入渗率从高到低为乔木林地、灌木林地、草地。

( 1 ) The great changes in Chinese agriculture during the past 10 years have been accompanied by significant deterioration of the rural environment as a cost of rapid development in the rural economy.( 2 ) Among the most important environmental effects are soil erosion, destruction of forest and grassland vegetation,decrease of land quality and soil fertility, pollution by urban-industrial wastes and agricultural chemicals, and the depletion of water resources.( 3 ) Population growth, low income and the...

( 1 ) The great changes in Chinese agriculture during the past 10 years have been accompanied by significant deterioration of the rural environment as a cost of rapid development in the rural economy.( 2 ) Among the most important environmental effects are soil erosion, destruction of forest and grassland vegetation,decrease of land quality and soil fertility, pollution by urban-industrial wastes and agricultural chemicals, and the depletion of water resources.( 3 ) Population growth, low income and the expense of modern technology have made these environmental problems worse.( 4 ) A new strategy of rural development, ecological agriculture, has been suggested as an alternative to the conventional way of developing agricuiture.( 5 ) Concept, components and current measures of ecological agriculture are introduced and the preliminary results are discussed.

中国农业近十年来的巨大变化,伴随着农村环境的明显恶化,这是农村经济迅速发展所付出的代价。其中主要环境问题是水土流失、林草植被破坏、土地质量和土壤肥力下降、城乡废弃物和化肥农药污染以及水资源的耗竭。人口增长、收入过低和现代技术的高成本,加重了这些环境问题。生态农业作为一种农村发展新策略的提出,为解决农业常规发展的问题,找到了新的途径。本文介绍了生态农业的概念、组成部分和现行措施,并对其初步效益作了讨论。

 
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