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马尾松
相关语句
  masson pine
    Response of masson pine seedling to chronic harm of SO_2
    马尾松幼苗对SO_2慢性伤害的反应
短句来源
    Effect of limestone and magnesite applications on masson pine(Pinus massoniana) forest growing on acidified soil
    投加石灰石和菱镁矿对酸化土壤上马尾松(Pinus massoniana)林的影响
短句来源
    Masson pine (Pinus massonianas Lamb.)
    马尾松 (Pinus massonianas L amb.)
短句来源
    The resultsare: the AOX yield of OHMP bleaching of pulp of masson pine, reed and bagasse decreased by 69%, 86% and 89% respectively;
    比较发现:马尾松、芦苇和甘蔗渣浆OHMP漂白AOX产生量分别下降69%、86%和89%;
短句来源
    CHARACTERISTICS OF FOG WATER AND ITS EFFECTS ON MASSON PINE(P/NUS MASSONIANA LAMB)IN NANSHAN MOUNTAINS,CHONGQING
    重庆南山雾水特性及其对马尾松(Pinus massoniana Lamb)的影响
短句来源
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  “马尾松”译为未确定词的双语例句
    In order to analyse soil chemical properties under dominant trees of different defoliation percentages and contents of elements in their needles, some dominant trees of different defoliation percentages (0%~20%, 20%~40%, 40%~60% and 60%~99%) in pure stands of Pinus massoniana at Tieshanping of Chongqing were selected according to European criteria for dividing defoliation percentages.
    以重庆铁山坪马尾松纯林为研究对象,采用欧洲叶量损失率的划分标准,选择叶量损失率为0~20%、20%~40%、40%~60%和60%~99%的优势木,分析其树冠下的土壤化学性质及针叶元素含量;
短句来源
    The total biomass of E. urophylla and P. massoniana stands were respectively 66.89 t·hm-2 and 77.56 t·hm-2 at pollution plots, which had the less biomass than those at non-pollution plots, only 78.89% and 94.49% respectively.
    污染区样地中尾叶桉和马尾松林分总生物量分别为66.89t·hm-2和77.56t·hm-2,仅分别为清洁区的78.89%和94.49%。
短句来源
    The proportion of root biomass to total biomass of E. urophylla and P. massoniana were respectively 65.16% and 15.08% for pollution plots, while 40.50% and 14.48% for non-pollution plots.
    尾叶桉和马尾松根系生物量占林木层生物量比例:污染区样地分别为65.16%和15.08%; 清洁区分别为40.50%和14.48%。
短句来源
    Studies on Litterfall and Carbon Storage of Pinus massoniana Forest in Zhejiang Province
    浙江省马尾松(Pinus massoniana)林凋落物量及土壤碳库的初步研究
短句来源
    The Studies on the Growth and Antipollution Effects of Mixed Forest Pinus massoniana×Schima superba
    马尾松木荷混交林生长与抗污染效果研究
短句来源
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  masson pine
Organic acid exudation from the roots of Chinese fir (Cunninghamia lanceolata) and Masson pine (Pinus massoniana) seedlings under low phosphorus stress was studied using the solution culture method.
      
The results revealed that organic acid exudation from the roots of Chinese fir and Masson pine seedlings under low phosphorus stress increased.
      
Compared with P3 (KH2PO4, 0.5 mmol/L), the average organic acid exudation from the root of Masson pine seedlings under P0 (KH2PO4, 0 mmol/L), P1 (KH2PO4, 0.03 mmol/L) and P2 (KH2PO4, 0.09 mmol/L) increased by 328.6%, 267.9% and 126.4% respectively.
      
Masson pine from Zhejiang Province in China had the highest organic acid exudation.
      
Under low phosphorus stress, the increase in organic acid exudation from the different provinces of Chinese fir and Masson pine varied.
      
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The characieristics of fog water and its effects on masson pine in Nanshan mountains, Chongqing were studied. The results of fog water analysis showed that it was sulfur acidic fog with an average pH value of 4.5(3.6-5.6). The major components of the fog water were SO2-4, Ca2+and NH4+.The total ionic concentration was 9.3 times of that of the rain water at the same season. There was a large amount of particiulate-matter in the fog water. The pH value of the fog water condensed on the needles of pine decreased...

The characieristics of fog water and its effects on masson pine in Nanshan mountains, Chongqing were studied. The results of fog water analysis showed that it was sulfur acidic fog with an average pH value of 4.5(3.6-5.6). The major components of the fog water were SO2-4, Ca2+and NH4+.The total ionic concentration was 9.3 times of that of the rain water at the same season. There was a large amount of particiulate-matter in the fog water. The pH value of the fog water condensed on the needles of pine decreased to 3.0 or below,indicating possibilities of le aching of Ca2+, Mg2+ and NO3- ions from the needles and the effect on needle chlorophyll. The particulate matter in the fog water might affect the needle, photosynthesis by blocking up the stomas.

通过对重庆南山四个样点的雾水分析表明,雾水的pH值为3.6—5.6,平均为4.5。离子成分以SO_4~(2-),Ca~(2+)和NH_4~+为主,其总浓度为同期雨水的9.3倍。雾水中还有大量的颗粒物。凝结于针叶上的雾水pH值普遍下降,可达3.0以下。酸雾对马尾松针叶中的Ca~(2+),Mg~(2+),NO_3~-等营养离子有淋失作用,对叶中叶绿素有破坏作用。雾水中的颗粒物覆盖叶表面,可堵塞气孔,影响叶片的光合作用,或造成伤斑。

By investigating and materials analyzing. a now viow that effects ofSO_2 and other acid deqosition are one of important causes of the death of Nansan Masson Pine was sjggested.

通过实地考察和资料分析,本文提出了以SO_2为主的酸性干、湿沉降是造成南山马尾松死亡的重要原因之一的新观点。

A model of forest canopy reaction to acid precipitation was suggested to simulate the throughfall chemistry. Canopy reactions of Pinus massoniana and Michelia macclurei Var. sublanea in Liuzhou,Guangxi were measured during one

建立了酸沉降—冠层反应模型,并计算冠层穿落水的化学特征。用广西马尾松和火力楠人工林一周年观测数据对模型进行初步检验.结果表明,模型与观测结果基本吻合,实测和模拟的穿落水量及各项离子的相对误差都在±7%之内,马尾松冠层过程强烈地受大气干沉降控制,穿落水加权pH值比同期降雨低0.61单位,火力楠受干沉降影响小,穿落水pH比降雨高0.28.参与冠层反应的各离子的主要来源不尽相同.

 
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