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damage to land
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  “damage to land”译为未确定词的双语例句
     Due to the huge population,low population quality,inadequate cultivated land,limit resource of reserve land,and severe damage to land in development,China should make efforts on sustainable development.
     我国人口多,素质低下,人均耕地面积减少,后备土地资源有限,开发中土地毁损严重。
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     In addition, the environment protection problems caused by coal mining is also explained, such as damage to land resource, damage to villages, effects on water resource and on ecological balance as well as effects of coal development and utilization on atmosphere environment.
     指出了煤矿开采引发的环境问题:如采煤对土地资源的损害、对村庄的损害、对水资源的影响,以及煤炭开发和利用对大气环境生态平衡的影响。
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  相似匹配句对
     Land damage from coal mining
     煤炭开采对土地资源破坏的分析
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     (3) The land damage status and its forecast;
     ( 3 )规划区土地破坏状况及其预测 ;
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     Land damage and restoration in coal mining area
     矿区土地问题及治理技术研究
短句来源
     Factors to effect the land damage from coal mining are analysed.
     对煤炭开采中地下开采、露天开采以及固体废弃物压占破坏土地的规律进行了分析 ,提出了采煤塌陷破坏土地与矿区地形、地质、覆岩性质、煤层赋存特征以及采煤方法等因素有关 ;
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     Damage of Drought to Orange Garden in Mountain Land and Countermeasures
     山地桔园旱害与对策
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  damage to land
Despite the similar extent of population increase in both communities, the damage to land differed markedly.
      
Damage to land is linked to effects on particular receptors on biodiversity as a whole.
      
Carrying capacity is a measure of the number of birds on a given land area before damage to land and vegetation becomes severe.
      


Due to the huge population,low population quality,inadequate cultivated land,limit resource of reserve land,and severe damage to land in development,China should make efforts on sustainable development.Aside from controlling population growth,we should decide land utilization program,establish basic field protection area,cultivate soil fertility,prevent land from degenerating,and stick to comprehensive utilization.

我国人口多,素质低下,人均耕地面积减少,后备土地资源有限,开发中土地毁损严重。要走可持续发展道路,除切实控制人口增长外,还必须制订土地利用规划,建立基本农田保护区,培养地力,防止土地退化,坚持综合利用。

Based on the research on afforestaion by transplanting seedling with Populus L., Salix L., Ulmus L. in Xiliaohe Plain in summer, good results can be achieved in afforestation by transplanting seedling of broadleaved tree species in semiarid districts in summer. It can reduce high temperature damage to land surface, keep complete root system and moisture balance of seedlings. It also can promote seedlings to root early and quickly and pass through dangerous period as early as possible.

通过西辽河平原杨柳榆等夏季植苗造林的调查研究 ,认为在半干旱地区进行阔叶树种夏季植苗造林能减轻地面高温危害 ,保持苗木根系完整和水分平衡 ,使苗木早生根、快生根、尽早地渡过“危险期”(缓苗期 )。

Soil and water erosion is probably the most serious ecological environment problem in the Loess Plateau, especially on the slope fields of this semi-arid hilly gully region. It results in decline of top soil thickness, soil nutrients loss, water pollution, flood disaster and land productivity degradation. But the relationship between soil and water erosion and land productivity is not well defined yet. Without an adequate definition, the selection of proper management strategies to optimize perennial crop and...

Soil and water erosion is probably the most serious ecological environment problem in the Loess Plateau, especially on the slope fields of this semi-arid hilly gully region. It results in decline of top soil thickness, soil nutrients loss, water pollution, flood disaster and land productivity degradation. But the relationship between soil and water erosion and land productivity is not well defined yet. Without an adequate definition, the selection of proper management strategies to optimize perennial crop and biomass production will be impossible. Insufficiently reasonable decisions can easily result in serious damage to land resources. Land productivity may approach zero in many severely eroded areas such as in the steep slope fields of the Loess Plateau. Accurate estimates of future land productivity are essential to make agricultural and soil erosion management policy decisions and to plan the use of land from the field scale to the national level. Such a task is enormous because it requires a method for quantifying land productivity with sediment and runoff date bases. Land productivity is the capacity of a land in its normal environment to produce a particular plant or sequence of plants under a specified management system. Because of the emphasis on a land's capacity to produce crops or other plants, land productivity should be expressed in terms of yields or biomass. Despite limited research efforts have been developed to relationship between the soil and water erosion and land productivity problem specifically in china, considerable effort has gone into most of the important processes involved in middle and upper reaches of the Yellow River. The Yellow River, passing through the Loess Plateau, is the most heavily sediment-laden river in the world, with an average sediment concentration of 37.5 kg/m3 and annual sediment load of 1.6 billion t. The test zone, Xiji county of Ningxia Hui Autonomous Region, is located in hilly gully area of the Loess Plateau and belongs to semi-arid region with average annual precipitation of about 400 mm. Based on analysis of property of soil and water erosion in slope field in hilly gully area of the Loess Plateau, relationship between soil and water erosion and slope field productivity is researched with different test methods and crops in this paper. Runoff plot test handled by piling up topsoil indicates that each 1 mm of lost runoff costs the producer 5.0%~9.7% of the crop yields. Among them each 1 mm of lost runoff costs the producer 9.7% of spring wheat yield when slope degrees increases from 10° to 25°. Each 1 mm of lost runoff costs the producer 5.0% of potato yield when slope degrees increases from 10° to 20°. Plot test simulated soil erosion shows that the yields of different crop species decease by 1.0%~3.1% with removing each 1 cm topsoil and increase by 0.8%~1.7% with piling up each 1cm topsoil respectively. Concretely the topsoil is the most critical layer in the impact of soil erosion on the yields of spring wheat and flax. Their yields decreases by 3.1% and 1.9% respectively with removing each 1 cm top soil when 5 cm top soil is lost, and the reduction are much lower than 1.9% with removing each 1 cm top soil when 10 cm and 20 cm top soils are lost. And the yields increase by 1.7% and 1.3% with increasing each 1 cm of topsoil when 10 cm topsoil is added. Potato and pea yields reduce by 1.0% and 2.2% with string each 1 cm of topsoil when the different soil layers are eroded, and the yields increase by 0.8% and 1.2% with increasing each 1 cm of topsoil when 10 cm topsoil is added. There are different impacts of soil and water erosion on the processes of crop growing during their different physiological periods. Impacts of soil and water erosion decrease by 21.9%~80.0% of the crop yields in slope field in arid years, among them the lost runoff amounts for 95.8%~98.2% and the lost soil loss does only 1.8%~4.2%. Impacts of soil and water erosion on crop productivity are different for different crop species on the slope fields in semi-arid hilly gully area

在黄土丘陵区坡耕地水土流失特征分析的基础上 ,对坡耕地水土流失与土地生产力的关系进行了研究。采用不同的试验方法 ,以单位面积坡耕地生产某种生物产品的数量为土地生产力指标 ,以生产周期短的农作物为指示植物 ,具体探讨了地表径流损失和土壤流失分别所造成的土地生产力下降幅度。表土人工堆积处理的径流小区试验结果表明 ,坡耕地每损失 1 mm径流 ,供试作物产量平均下降 5 .0 %~ 9.7% ;小区铲土覆土模拟土壤流失的小区试验结果显示 ,每减少 1 cm表土 ,作物产量下降 1 .0 %~ 3.1 % ,每增加 1 cm表层熟化土 ,产量增加 0 .8%~ 1 .7%。在干旱年份 ,半干旱黄土丘陵区坡耕地由于水土流失导致的作物减产每年平均为 2 1 .9%~ 80 .0 % ,其中径流损失的比重占 95 .8%~ 98.2 % ,而土壤流失仅占 1 .8%~ 4.2 %。作物品种不同 ,水土流失对作物产量的影响各异。

 
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