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人工林土壤
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  plantation soil
     Effects of species diversity of litter on the ecological functions of Cunninghamia lanceolata (Lamb.) Hook. plantation soil
     凋落物的树种多样性与杉木人工林土壤生态功能
短句来源
     Evolution Rule of Korean Pine Plantation Soil Quality
     红松人工林土壤质量演变规律
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     (2) The Fe and Mn elements in the plantation soil are closely correlated to the efficiency of P element, and the soil Mn has greater fixation effect on P under the condition of reduction.
     (2 )玄武岩桉树人工林土壤中的Fe、Mn与P素有效性关系密切 ,且在还原条件下的土壤Mn对磷的固定作用更大 ;
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     The results showed that the contents of plantation soil nutrients, Which from 0~60cm showed decline trend, and the difference fo soil nutrients, contents among every stand type is obvious except available Phosphorus.
     结果0~60cm土层的人工林土壤养分含量多呈下降趋势,除有效磷外,各林分类型间土壤养分含量差异显著
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     The result shows that the activities of Uricase,Protease,phosphotase,Peroxidase,with the exception of Multiphend oxidase,were reduced by the range of 15.2% to 63.8%,13.9% to 15.3%,1.6% to 17.4%and (6.6%) to 17.1% respectively,significant reduction for the activity of Uricase in particular.
     结果表明,与天然草地土壤相比,除多酚氧化酶外,华北落叶松人工林土壤脲酶、蛋白酶、磷酸酶、过氧化物酶的活性降低,脲酶、蛋白酶、过氧化物酶、磷酸酶的活性降低幅度分别为15.2%~63.8%,13.9%~15.3%,6.6%~17.1%,1.6%~17.4%,以脲酶活性降低最为明显;
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     Soil respiration rate in the CF had the highest soil temperature and humidity sensitivity, followed by the CK and the NF. Annual soil CO_2 effluxes ranged from 13.742 tC·hm~-2·a~-1 in the NF to 9.439 tC·hm~-2·a~-1 in the CK and to 4.543 tC·hm~-2·a~-1 in the CF.
     格氏栲天然林、格氏栲人工林和杉木人工林土壤呼吸年通量分别为13.742、9.439和4.543tC·hm-2·a-1,前者分别约是后二者的1.5倍和3.0倍。
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     As a result, the annual soil respiration amount was estimated as 588 gCm~(-2) a~(-1) for Larch forest.
     通过计算,兴安落叶松人工林土壤一年内的呼吸总量为588 gCm-2a-1。
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     Evaluation on Soil Nutrient Status of Poplar Plantation in Jianghan Plain
     江汉平原杨树人工林土壤养分状况评价
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     Study on the Change of Soil Nutrient Content of Larch Plantations
     落叶松人工林土壤养分含量变化的研究
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     Physical and Chemical Properties of the Soil for Larch Plantations
     落叶松人工林土壤理化性质
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     Tendency of Soil Degradation in the Pure Larch Plantations.
     落叶松人工林土壤衰退趋势
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     soil fertility;
     土壤肥力;
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     Machine Proccessing of Remotely Sensed Data and Soil Information Systems and Remote Sensing and Sail Survey
     土壤遥感
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  plantation soil
obtusa plantation soil were different from that in the two shrub-type forest soils and in theSasa-type forest soil.
      
Six weeks after planting, seedlings receiving plantation soil had formed 62% more root tips than controls; however, no statistically significant differences were apparent 15 weeks after planting.
      
Under these conditions, the rapid root growth and mycorrhiza formation stimulated by plantation soil increases the ability of seedlings to survive the first growing season.
      
The occurrence of phosphate-solubilizing fungi in coconut plantation soil types was investigated.
      
Organic carbon diminution and estimates of carbon dioxide release from plantation soil
      


Soil water balance of the artificial forestland planted with locust treeshas been studied quantitatively for years on the water balance plots setsin Ansai soil conservatin station of loess hilly region in northern Shaanxi,based on the soil water balance equetion for the soil of artificial forest-land.The analyse result shows that the soil is becoming dry because ofintense evapotransporation and the water-sucking effect due to the deve-lopment of the root system in deep layer if the artificial forest is madeon...

Soil water balance of the artificial forestland planted with locust treeshas been studied quantitatively for years on the water balance plots setsin Ansai soil conservatin station of loess hilly region in northern Shaanxi,based on the soil water balance equetion for the soil of artificial forest-land.The analyse result shows that the soil is becoming dry because ofintense evapotransporation and the water-sucking effect due to the deve-lopment of the root system in deep layer if the artificial forest is madeon the loess hilly region with semi-arid climate.The providing functionof the water stored in deep layer to adjust the need of water from treeswill be vanished,thus,only could the trees grow depending on the precipi-tation in current year.From this point of view,it is thought that the arti-ficial forests deteriorate their own soil water condition constantly, whichmakes the trees grow slowly and limits the growth amount with water.

根据人工林地土壤水分收支平衡方程式,在陕北黄土丘陵区的安塞县水土保持站有设了水分平衡场,对人工刺槐林生态系中的水分平衡状况进行了多年的定量观测。分析结果认为,在半干旱的黄土丘陵区营造人工林之后,由于强烈的蒸发蒸腾和根系深层发育的吸水作用,会使土壤向干燥化发展。深层土壤储水补给调节树木需水的作用逐渐消失,使之只能依靠当年降水进行生长。从这个意义上来看,人工林是在不断地恶化自身生长的土壤水分条件,从而形成生长缓慢、生长量受降水量控制的局面。

Studies on the soil microorganisms and soil biochemical activities were carried out in Laoshan China fir plantation Tianlin county.The results indicated that the soil microorganisms quantities and biochemical activities had no relation with elevation,but there were remarkable differences in different topography and soil types.The soil microorganisms quantities and biochemical activities in the valley and the black sandy soil were higher than those in the hillside,the ridge,the red soil and the yellow soil.It...

Studies on the soil microorganisms and soil biochemical activities were carried out in Laoshan China fir plantation Tianlin county.The results indicated that the soil microorganisms quantities and biochemical activities had no relation with elevation,but there were remarkable differences in different topography and soil types.The soil microorganisms quantities and biochemical activities in the valley and the black sandy soil were higher than those in the hillside,the ridge,the red soil and the yellow soil.It showed that the soil microorganisms were very active,and there were higher soil fertility and more intensive forest productivity in the valley and the black sandy soil.

对广西田林县老山林区不同立地杉木人工林土壤微生物及生化活性研究结果表明:不同立地杉木人工林土壤微生物数量变化及生化活性强度与海拔高度不相关。而不同地形和不同土类表现明显差异,山洼和黑砂土土壤微生物的数量和生化活性强度高于山坡、山脊及红土和黄土,表明山洼和黑砂土土壤微生物很活跃,显示山洼和黑砂土土壤具有较高肥力和森林生产力。

This paper studied distribution, quantity, composition and biochemial activities of soil microorganisms on 3 artificil forests in the Qingyuon forest region of Yishan county。 The results indicated that the quantities of Bacteria and Streptomyces of soil on the Eucalyptus —— Pinus massoniana mixed forest under 3 artificial forests is highest. Next is Camellia olebsa forest. The Cunninghamia lanceolata forest is lower. The numbr of Fungi of soil on the Cunninghamia lanceolatar forest under 3 artificil forest is...

This paper studied distribution, quantity, composition and biochemial activities of soil microorganisms on 3 artificil forests in the Qingyuon forest region of Yishan county。 The results indicated that the quantities of Bacteria and Streptomyces of soil on the Eucalyptus —— Pinus massoniana mixed forest under 3 artificial forests is highest. Next is Camellia olebsa forest. The Cunninghamia lanceolata forest is lower. The numbr of Fungi of soil on the Cunninghamia lanceolatar forest under 3 artificil forest is higher than the Eucalyptus——Pinus massoniana mixed forest and Camellia oleosa forest. Composition of the species, group and genus is different. Activity of soil enzyme and intensity of soil respiration on the Eucalyptus —Pinus massoniana mixed forest and the Camellia oleosa forest under 3 artificial forests is stronger than the Cunninghamia lanceolata forest. It shows that the fertility and forestry produtivity of soil on the Eucalyptus——Pinus massoniana mixed forest and Camellia oleosa forest were higer.

本文研究了庆远林区三种人工林土壤微生物的分布、数量、组成和生化活性。研究结果表明,三种人工林土壤微生物细菌和放线菌数量以桉松混交林土壤最高,油茶林土壤次之,杉木林土壤较低。真菌数量以杉木林土壤较高,桉松混交林和油茶林土壤较低。种、群、属组成各不相同。土壤酶活性和土壤呼吸作用强度,以按松混交林和油茶林土壤较强,杉木林土壤较弱,显示按松混交林和油茶林土壤具有较高肥力和森林生产力。

 
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