Effect Of Climatic Factors On Anatomical Characteristics And Physical Characteristics Of Plantation Ussuri Poplar Wood

The effect of climatic factors on anatomical characteristics and physical characteristics of the plantation ussuri poplar wood were investigated in this paper. First, the index of the anatomical characteristics and physical characteristics of the plantation ussuri poplar wood were standardized by rejected the influences of the genetic factors, cultivation measures and site conditions, then established standard index attached to the climatic factors. Second, the effect of the climatic factors on anatomical characteristics and physical characteristics of the plantation ussuri poplar wood were researched by correlation function analysis, the climatic factors included the precipitation, relative humidity, sunshine percentage, mean temperature, ground temperature, lowest ground temperature, highest ground temperature and other climatic factors with biological significance. Finally, the responses of anatomical characteristics and physical characteristics of plantation ussuri poplar wood to the climatic factors and the climatic factors of growth seasons were analyzed by function analysis. Put forward the proposal to the directed oriented cultivation of plantation ussuri poplar.By researching the effect of the climatic factors on anatomical characteristics and physical characteristics of the plantation ussuri poplar wood obtained some conclusions.Precipitation had the significant correlation to early wood and late wood fiber, early wood and late wood vessel, late wood percentage and growth rate. Relative humidity had the significant correlation to early wood fiber, early wood and late wood vessel, early wood cell wall percentage, vessel tissue proportion, early wood density, late wood width and growth rate. Sunshine percentage had the significant correlation to early wood fiber, early wood vessel, late wood cell wall percentage, early wood width and growth rate.Mean temperature had the significant correlation to early wood vessel, late wood vessel and fiber tissue proportion. Ground temperature had the significant correlation to early wood and late wood fiber, early wood and late wood vessel, late wood cell wall percentage, late wood density and growth rate. Lowest ground temperature had the significant correlation to late wood vessel and growth rate. Highest ground temperature had the significant correlation to early wood and late wood fiber, early wood vessel, vessel tissue proportion, early wood density and growth rate. Warmth index had the significant correlation to late wood fiber, early wood and late wood vessel, fiber and vessel tissue proportion, late wood percentage and growth rate. Temperature on biological had the significant correlation to early wood and late wood vessel, fiber tissue proportion, vessel tissue proportion and late wood percentage. Effective temperature had the significant correlation to fiber tissue proportion and growth rate. The warmest month temperature had the significant correlation to late wood vessel and fiber tissue proportion. By analyzing the responses of plantation ussuri poplar wood anatomical characteristics and physical characteristics to climatic factors obtained same inclusions. Climatic factors effected on physical characteristics greater than on the anatomical characteristics.Climatic factors effected on early wood fiber greater than on late wood fiber. Climatic factors effected on late wood vessel greater than on early wood vessel. Climatic factors had no significant effect on cell wall percentage, tissue proportion, early wood density and late wood density. Climatic factors had great effect on early wood width, late wood width, growth ring width and late wood percentage. Above all, climatic factors had the greatest effect on growth rate. The influence of the climatic factors on anatomical characteristics somewhat important in this order: early wood fiber length to width ratio, late wood vessel width, early wood fiber diameter, late wood vessel wall to lumen ratio, early wood vessel wall to lumen ratio and early wood fiber width. The influence of the climatic factors on physical characteristics somewhat important in this order:growth rate, late wood width, early wood width, growth ring width and late wood percentage.By studying on the responses of plantation ussuri poplar wood anatomical characteristics and physical characteristics to climatic factors of the growth seasons obtained same inclusions. The responses of anatomical characteristics to climatic factors of the growth seasons were less than the responses of the physical characteristics to climatic factors of the growth seasons; the responses of early wood fiber and vessel to the climatic factors of growth seasons were less than the responses of the late wood fiber and vessel to the climatic factors of growth seasons; the responses of the cell wall percentage, tissue proportion, early wood density, late wood density and late wood percentage to the climatic factors of growth seasons were not significant; the responses of the early wood width, late wood width and growth ring width to the climatic factors of growth seasons were significant and the response of the growth rate to the climatic factors of growth seasons was the greatest. The response of the anatomical characteristics to the climatic factors of growth seasons somewhat important in this order:the responses of late wood fiber wall to lumen ratio and late wood fiber wall thickness to relative humidity of growth late period, the responses of late wood vessel wall to lumen ratio and late wood vessel length to width ratio to precipitation of vigorous growth period. The response of the physical characteristics to the climatic factors of growth seasons somewhat important in this order:the responses of the growth rate to the lowest ground temperature of growth late period, the lowest ground temperature of growth dormant period and the highest ground temperature of vigorous growth period, the responses of late wood width, growth ring width and early wood width to the ground temperature of vigorous growth period, precipitation of growth late period and relative humidity of vigorous growth period.The results of this paper will provide a scientific basis and practical significance for oriented cultivation of plantation ussuri poplar.