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bamboo ecosystem
相关语句
  竹林生态系统
     Compared with traditional practice, after 10-year intensive management, total carbon storage in the bamboo ecosystem declined 8.133 t·hm -2, however, the net annual carbon fixation of tree story appeared an increase of 0.589 t·hm -2a -1.
     毛竹林乔木层碳素年固定量为 5 0 97t·hm- 2 a- 1 ,与粗放经营竹林相比 ,毛竹集约经营 10年后 ,竹林生态系统中碳贮量减少了 8 133t·hm- 2 ,但乔木层年净固定碳量增加了 0 5 89t·hm- 2 a- 1 。
短句来源
     Bamboo Ecosystem and Carbon Dioxide Sequestration
     竹林生态系统与大气二氧化碳减量
短句来源
     Importance of Long-Term Location Investigation for Bamboo Ecosystem
     竹林生态系统及其长期定位观测研究的重要性
短句来源
  “bamboo ecosystem”译为未确定词的双语例句
     Besides the amount of throughfall and run-off, the bamboo growth character, soil microbial activity and human being measures are the main factors which affect the inputs and outputs of nutrients in a bamboo ecosystem.
     除作为养分移动载体的林内降水及迳流水外,毛竹生长发育特性、土壤生物活动及施肥、抚育等人力措施亦对毛竹林生态系统的养分输入与输出产生影响。
短句来源
  相似匹配句对
     ecosystem
     生态系统
短句来源
     BAMBOO
     竹
短句来源
     Bamboo
     竹子
短句来源
     Bamboo Ecosystem and Carbon Dioxide Sequestration
     竹林生态系统与大气二氧化碳减量
短句来源
     Study of Bamboo Forest Ecosystem Health and Ecological Control
     竹林生态系统健康与生物调控研究
短句来源
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Based on the theory of ecoboundary system, the authors considered the dense canopy of a bamboo stand as a "ecological body" working as a unit, the interface layers between the canopy and its surrounding as an ecoboundary system complex and the distributional density of leaves and branches within the canopy as a compositional structure of the "ecological body". All these play an important role collectively in material exchange and energy flow of a bamboo ecosystem.

作者借助近地层空气动力学的研究方法,分析竹林生态系统内部的湍流动态特性及物能流通规律。结果表明:上午日出后,随着太阳辐射的增强,林冠上层因截获太阳辐射而成为热源,热量向下输送,林冠层以下的热量传输则受林中逆温层的影响,逆温层以上热量上传至冠层底部,逆温层以下热量下传至林地。在上午光合作用的峰值期(上午10时左右),林冠为CO_2的汇区,CO_2分别来自上层的大气湍流输送和下层的林地土壤呼吸;而在光合作用的“午休”期,林冠成为CO_2的源区,多余的CO_2主要向林下输送。林冠枝叶的大量蒸腾发生在午后,此时的热量、水汽和CO_2通量均大于午前的数值。此外,林外空旷区的湍流活动在上午11时以后发展强烈,下午4时以后逐渐减弱,由于林冠枝叶的动力摩擦及林内逆温层的影响,林内多数时刻湍流活动不能发展。

Nutrient input from throughfall and its loss through the runoff of three small watersheds covered by Phyllostachys pubescent stands were monitered for study on nutrient cycling in southern China during the period from 1986 to 1989. Results indicate that the concentration and the amount of nutrients from throughfall are close relative to the throughfall amount, and show an obvious seasonal variation. The relative abundance of nutrient from throughfall is K+>Ca2+>Mg2+>NH/-N>NO3--N>PO43-. The dynamics of the amount...

Nutrient input from throughfall and its loss through the runoff of three small watersheds covered by Phyllostachys pubescent stands were monitered for study on nutrient cycling in southern China during the period from 1986 to 1989. Results indicate that the concentration and the amount of nutrients from throughfall are close relative to the throughfall amount, and show an obvious seasonal variation. The relative abundance of nutrient from throughfall is K+>Ca2+>Mg2+>NH/-N>NO3--N>PO43-. The dynamics of the amount of nutrients lost through the run-off in the small watershed correspond to the seasonal variation of the run-off amount. The relative abundance of nutrients of run-off is K+>Mg2+>NH4+ -N plus NO3--N>PO43-. Besides the amount of throughfall and run-off, the bamboo growth character, soil microbial activity and human being measures are the main factors which affect the inputs and outputs of nutrients in a bamboo ecosystem. The GM (1,1) model for predicting the K input amount with throughfall in a year at Miaoshanwu experimental site has been established.

在我国亚热带毛竹(Phyllostachys pubescens Mazel ex H.de Lehaie)主要产区浙、赣两省的三块试验林中对毛竹林内降水的养分输入及其小流域迳流的养分输出进行了连续四年的观察研究。结果表明,林内降水中的养分物质浓度及其输入量的季节变化明显,且与林内降水量的季节变化密切相关。林内降水中各养分物质的浓度及输入量依大小顺序列为K~+>Ca~(2+)>Mg~(2+)>NH_4~+-N>NO_3~--N>PO_4~(3-)。迳流水养分输出量的季节变化动态与迳流水量的季节增减趋势相一致,其养分物质浓度及输出量高低顺序为K~+>Mg~(2+)>速效N>PO_4~(3-)。除作为养分移动载体的林内降水及迳流水外,毛竹生长发育特性、土壤生物活动及施肥、抚育等人力措施亦对毛竹林生态系统的养分输入与输出产生影响。文中建立了浙江省庙山坞试验林林内降水中养分元素钾的年输入量GM(1,1)预测模型。

The experiment of introduction of bamboos on red earch of Lanxi proves that there are adaptablebamboos, i. e. Acidosasa edulis. Phyllostachys iridenscens, Ph. fimbriligulatu, Ph. praccox. TheirO/ I(output/ input) ratio is 8.57: 1 ~ 8.0: 1. Comparing with that of control area, the runoffcoefficiency decreased by 50.7% and the module of soil runoff loss is zero in the bamboo ecosystems.These food bamboos have better economic benefit, ecological effect and social benefit.

在兰溪市低丘红壤实验区,引种了十多个食用笋品种,经多年试验研究,初步明确了在本试区适生的食用笋品种——黄甜竹、红竹、角竹、雷竹,这几个品种用普通的造林抚育管理措施:3~4年即郁闭成林,比当地适生的毛竹(笋竹两用林)提前2~3年郁闭投产;并具有较高的经济效益,以销售母竹计算,平均产投比为8.57∶1;以经营食用笋计算,产投比为8.0∶1;这均高于当地其他种植业.发展食用笋,一旦成林就可永续利用.3年生的食用笋竹林,地表径流系数比无林地减少50.7%,土壤侵蚀模数降为零.经济效益、生态效益和社会效益显著。

 
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