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Biogeographical patterns of C,N and P concentrations and stoichiometric ratios of forest floor bryop
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Emily Grierson is the woman image in the novel A Rose for Emily , which is written by William Faulkner. The background of......
Legume Green Manuring Improves Soil Fertility and Plant Growth of Eucalyptus Plantation in South Sub
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To evaluate the effect of anti-HER-2×anti-CD3 bi-specific antibody(BsAb) on the growth of HER-2/neu-expressing human ga......
通过树干解析造材获得木材产量,采用动态和静态相结合的经济评价方法对桂中地区36年生顶果木人工林经济效益与成熟年龄进行研究。......
为探明不同间伐强度对重庆地区马尾松人工林生长的影响,在重庆市綦江区北部林场选择马尾松人工纯林(18年生)开展抚育间伐试验,分别设......
The effects of environmental factors on carbon flux were analyzed, the spatial and temporal variation of carbon flux was......
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低钠血症是住院患者常见的并发症之一,但医院获得性低钠血症的风险因子尚未明了。荷兰学者回顾性分析了住院患者发生低钠血症的原......
20世纪初期,一个澳大利亚人把一株多刺的仙人掌从阿根廷带回了澳大利亚的布耳那格城。在这之前,布耳那格城的人从来没有见过仙人掌......
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第,期 油松个体林木生长的数学模拟···”····……”········..···...……。············……韩兴......
AA七宕es,fabr止冷杉3(1):iAboveground biomass地上生物量3(z):56-Aeidie 50,l酸性土壤3(2):184A亡idie water酸性水5(1):69Aejd ......
第1期(1993年3月)关于加快四川林业发展的若干问题——学习邓小平同志南巡重要谈话和党的 十四大报告的体会…………………………......
Magnesium alloys have a wide range of applications in industry; however, their corrosion resistance, wear resistance, an......
Growth Responses of Young Slash Pine (Pinus elliottii Engelm.) to N, P and K Fertilizers in Red-Yell
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Growth Responses of Trees to Micronutrients and Their Feedback Effect in Various Soil-Forest Ecosyst
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根据长白落叶松纸浆林的培育实践,以经济指标内部收益率和净现值为基础,分析了培育措施对经济效益的影响。结果表明:轮伐期越短,经......
本文分别对凉水地区的红皮云杉天然林和帽耳山地区的红皮云杉人工林的管胞性状进行了研究,方差分析结果表明:管胞长度、管胞直径和管......
本文采用两点法原理和方法,对大兴安岭地区的落叶松和樟子松人工林地位指数表进行分析,建立了大兴安岭人工针叶林标准化生长模型,按模......
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从1999年9月至2000年7月隔月应用连续土芯法对福建三明莘口林场杉木与观光木的混交林的细根进行取样并测定活、死细根的N、P养分浓......
The fuelbreaks were established in south China from 1950s. With the active work of local communities and state governme......
Established by the former Ministry of Forestry in 1986, Dagangshan Forest Ecosystem Research Station is one of the 14 n......
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The Influence of S_2 Microfibril Angle on Longitudinal and Tangential Shrinkage in China-fir (Cunnin
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A series ofresearches on the nutrition problems in the cultivation of Chinese fir seedlings and plantations, which are ......
This article emphatically reviews the difference of soil biological activities, biochemical activities and soil chemica......
The canopy rainfall interception modei linked to environmental conditions and biological features is established on the......
本文在对间伐和风害之间关系的讨论和以往有关研究结果的基础上,确定了一种林木风害危险率的估计方法,用于评价间伐对林木风害的影......
Eucalypts are very popular for revegetation in many parts of south China because of their capacity to tolerate degraded......
采集厚朴7年生种源试验林13个种源,每种源15个单株共195份树皮样品,用高效液相色谱分析法(HPLC)测定厚朴酚、和厚朴酚的含量。结果......
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A Study on Forest Species Diversity and Its Ecological Service Function in the Plateau Area of Weste
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根据 5 a定位观测的数据 ,对湖南会同 2 4~ 2 8a生的杉木人工林生态系统各水文学过程中的养分特性进行了研究。结果表明 :林冠降水......
樟子松已成为三北沙区防护林主要乔木造林树种,但是,最早于20世纪50年代在科尔沁沙地引种的沙地樟子松却出现了生长衰退、枯梢直至......
树干呼吸是森林碳平衡估计中的一个重要项目同时还能够显示树木的活力。对于如何准确估计森林树干呼吸释放CO2总量还存在争论。在......