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pine-oak mixed forest
相关语句
  松栎混交林
     Microfungi in Litter and Soil of Pine-oak Mixed Forest
     松栎混交林凋落物及土壤微型真菌群落的研究
短句来源
  “pine-oak mixed forest”译为未确定词的双语例句
     2) there were no significant differences in NH + 4-N concentration between the two ecosystems in any sampling dates, whereas NO - 3-N concentration did differ, being higher in the pure pine stand than in the pine-oak mixed forest in Dec. 1995 and Aug. 1996;
     2 )纯林与混交林土壤 NH+ 4 - N浓度在各月都没有显著差异 ,而 NO- 3 - N浓度 ,除了 1995年 11月和 1996年 8月纯林显著高于混交林外 ,其它月份也都差异不显著 ;
短句来源
     NET NITROGEN MINERALIZATION AND NITRIFICATION IN ONE PURE PINE ( PINUS TABULAEFORMIS ) FOREST AND ONE PINE-OAK MIXED FOREST IN DONGLING MOUNTAINOUS REGION
     东灵山油松纯林和油松-辽东栎针阔混交林土壤氮素矿化/硝化作用研究
短句来源
     These results indicate that the ability to supply available N to plants (i.e., soil N availability) and to prevent inorganic N loss was higher in the pine-oak mixed forest ecosystem than the pure pine forest ecosystem.
     上述结果表明 :油松 -辽东栎针阔混交林生态系统土壤的氮素有效性 (即土壤的供氮能力 )以及维持土壤中植物可利用氮素的能力都显著高于油松纯林。
短句来源
  相似匹配句对
     Studies on Pine Pollen
     松花粉的研究
短句来源
     ,pine(Pinus sp.)
     、软木松(Pinus sp.)
短句来源
     (3) masson pine forest;
     (3)马尾松林;
短句来源
     Pine Digging-cuting Research
     松木挖土采伐试验研究
短句来源
     THE PRINCIPLE OF THE PINE-NUT SHELLER
     松籽脱壳机原理
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The microbial quantities of rhizosphere at Huoditang forest region of the Qinling mountains are analysied. The result showed that the rhizosphere quantities of Chinese pine-Armand pine mixed forest>larch forest>Pine-oak mixed forest, and the quantities of bacterium were dominant. The microbial quantities order of soil under alike forest types was rhizosphere>non rhizosphere; soil on the bottom of tree stem (within a range of 0~5 cm)>the soil body beyond 30 cm of tree stems...

The microbial quantities of rhizosphere at Huoditang forest region of the Qinling mountains are analysied. The result showed that the rhizosphere quantities of Chinese pine-Armand pine mixed forest>larch forest>Pine-oak mixed forest, and the quantities of bacterium were dominant. The microbial quantities order of soil under alike forest types was rhizosphere>non rhizosphere; soil on the bottom of tree stem (within a range of 0~5 cm)>the soil body beyond 30 cm of tree stems and used as control, and there had significant differences in the different forest types. The quantities distribution of rhizosphere microorganisms were positively correlated with the soil enzymic activities, contents of organic matter and soil nutrients.

对秦岭林区几种主要林型根际土壤微生物的测定分析表明:根际微生物数量表现为油松—华山松混交林>落叶松林>锐齿栎—油松混交林,且以细菌数量为主。同一林型微生物状况为根际>非根际,干基根区>干基非根区,且不同林分差异显著。微生物的数量分布与土壤酶活性、有机质含量、土壤养分状况等强弱呈正相关关系。

Up to now 5 species and 1 variety of matsutake group which occupy more than 1/3 of the total number of the 15 species available on the globe have been reported in China.They are Tricholoma matsutake,T.matsutake var.formosa,T.bakama tsutake,T.fulvocastaneum,T.robustum and T.quericola.These species,except T.robustum, are all the East Asian endemic elements.The triangular area consisting of southeast Qinghai Xizang(Tibet)Plateau,west of Sichuan and northwest of Yunnan abounds with rich species and has high occurrence...

Up to now 5 species and 1 variety of matsutake group which occupy more than 1/3 of the total number of the 15 species available on the globe have been reported in China.They are Tricholoma matsutake,T.matsutake var.formosa,T.bakama tsutake,T.fulvocastaneum,T.robustum and T.quericola.These species,except T.robustum, are all the East Asian endemic elements.The triangular area consisting of southeast Qinghai Xizang(Tibet)Plateau,west of Sichuan and northwest of Yunnan abounds with rich species and has high occurrence frequency,hence can be considered as an abundance as well as distribution center.T.matsutake and its varie ty can be always found in the pine (Pinus yunnanensis,P.densiflora,P.densata etc.)forest.The great majority of the other three species usually occurs in the oak (Quercus aquifolioides,Q.pannosa,Q.variabilis,Q.serrata,Q.rehderiana etc.)forest besides T.robustum which can be usually found in the above mentioned two kinds of forests or pine oak mixed forest.They are important ectomycorrhizal fungi of pine and oak.The paper mainly discusses the community natural succession of pine and oak and impacts of human activities upon matsutake group.It is demonstrated that although the former experiences species substitution based on natural successive law of pine and oak forests,no obvious effect occurs.However,the latter constitute a leading influential factor,summarized as follows:(a)The uncontrolled extensive tree felling resulted in a sudden deterioration of the eco environment.As a consequence,the subterranean mycelia dropped obviously,even disappeared completely in some districts.(b)A preda tory collection (namely the mycelia in ground are taken out together with fruit bodies and deserted over the ground or the remained mushrooms pits are open without soil cover after collecting.In the case subterranean mycelia are exposed in the air for long time,they would be endangered even died) is another factor which causes a decrease of the natural bio resources.These are the main reasons account for the endangerment of matsutake group and even disappearance in some regions.In order to preserve endangered matsutake group,establish special nature reserves,isolate their genes,cells and tissue culture and keep them for future research and utilization in case they disappeared,and their tissue culture as well as artificial inoculation of the mycelia into the pine and oak forests in order to increase subterranean mycelia and sustain utilization,it is suggested that the proposals should be added to the 《Red Book on the Wild Plants of China》.

论述了国产松茸群的分类地位、种类组成、地理分布、生态环境及其在松、栎森林生态系统中的作用,资源现状及其日趋减少的原因分析。重点讨论了松、栎类植物群落自然演替及人类活动对松茸群的影响,其中人类活动是影响松茸群生长繁衍生存诸因素中最主要的因素,概括有二:①森林大面积的无度连续砍伐,导致生态系统环境的恶化,地下菌丝明显减少;②掠夺性的采集方法使有序的地下菌丝及其正常分化与发育受到严重干扰。建议建立特种自然保护区,将松茸类增写到《中国植物红皮书》中;采取实施人工接种于林地以增加森林生态系统中地下菌丝蕴藏量和补充菌丝不足、促进发育与分化以增加自然生物量,林木砍伐采用间伐与菌根育苗造林相接合以及科学的采集方法等是合理永续利用和有效保护的根本途径。

The litter biomass and its water capacity are studied on the four main forest types,Chinese pine forest,East liaoning oak forest,pine oak mixed forest,and pine lach birch oak mixed forests in Lingkongshan forest farm,Taiyue Forest Management Office,and the biomass,max water capacity,and decomposition rate are sorted on different forest types.The study results may provide a scientific basis to the study of the water and soil conservation function...

The litter biomass and its water capacity are studied on the four main forest types,Chinese pine forest,East liaoning oak forest,pine oak mixed forest,and pine lach birch oak mixed forests in Lingkongshan forest farm,Taiyue Forest Management Office,and the biomass,max water capacity,and decomposition rate are sorted on different forest types.The study results may provide a scientific basis to the study of the water and soil conservation function of the forests and further comprehensive evaluation of ecological function of forests here.

通过对太岳灵空山四种主要森林类型 :油松纯林、辽东栎林、松栎混交林、油落桦栎混交林的枯落物生物量及其持水性能的调查分析 ,总结出不同森林类型的生物量、最大持水量、分解率的大小排序。为研究森林的水土保持、水源涵养功能以及进一步综合评价该区的森林生态功能提供了科学依据

 
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