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three stands
Analysis of gene frequencies for two esterase phenotypes indicated all three stands arose from a single panmictic population.
      
The natural population sample consisted of a total of 360 trees representing three stands within each of three watersheds present in the Shuswap-Adams low-elevation zone of interior British Columbia.
      
marilandica (Muenchh.) dominated three stands and these species were codominant in four stands.
      
In the three stands with lowest prevalence (mean = 2%) of this nematode, many caterpillars (mean = 38.5) entered roots, and lupine mortality was high (range = 0.41-1.0).
      
Twenty-nine trees were measured in three stands (young, middle-aged, and mature), with three thinning treatments (unthinned, normal, and intensive) in the two older stands.
      
Wood cores were taken from dominant beech trees in three stands in Germany and Italy.
      
The relationships between climatic variables and Scots pine (Pinus sylvestris L.) growth and needle dynamics were studied in three stands in Estonia and in four stands located near the northern timberline in Lapland.
      
oaxacana seedlings was conducted to assess the ectomycorrhizal inoculum potential of the soil for each of the three stands.
      
The study was based on 49 Norway spruce (Picea abies) logs from three stands in Sweden.
      
The topographies of the three stands with different stand characteristics analyzed in this study were steep slope (mean slope ± SD; 37.6° ± 5.8°), gentle slope (15.6° ± 3.7°), and gentle yet rough terrain (16.8° ± 7.8°).
      
The data of root excavation taken from the three stands were used for the analyses; young (26 years old), mature (105 years old), and uneven-aged over-mature stand (220 years old).
      
Stands 1 and 3 naturally occurred on sites with southerly aspects while stand 2 naturally occurred on northerly aspects; stand ages were similar for the three stands (36-38?years old).
      
Species composition, diversity and tree population structure were studied in three stands of the tropical wet evergreen forest in and around Namdapha National Park, Arunachal Pradesh, India.
      
In total 200 plant species belonging to 73 families were recorded in three stands.
      
Expected heterozygosity (He) ranged from 0.325 to 0.351 for the three stands.
      
The weighted mean distances of pollen dispersal for these three stands were 36.8 and 37.1 m based on simple exclusion procedure and most-likely method, respectively.
      
In 1998, the main species in three stands had changed from Norway spruce to Scots pine, and in one stand from Norway spruce to birches.
      
The other three stands were fertilized once in 1988-89 (P:K:Ca:Mg:S|25:62:33:12:54 kg ha-1) and sampled in 1992.
      
The below:above N ratios for all three stands closely approximate those for biomass.
      
greggii seed was different in each of the three stands, but was not correlated with time since fire: maximum densities were recorded from the 35 year old stand (ca.
      
 

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