摘要
为探讨章古台地区气候因子对沙地樟子松径向生长的影响,以该区1980年和1986年春季造林的樟子松为研究对象,在树干解析的基础上,对年轮宽度与气候要素的相关关系进行分析。结果表明:章古台沙地樟子松年轮宽度受年均温度(X1)、降水量(X5)、风速(X7)、地表最高温(X9)、地表最低温(X10)等气候因子影响较大,其最优回归方程为:Y=0.171 8-0.067 3 X1+0.000 4 X5+0.098 2 X7+0.014 5 X9+0.044 8 X10(R2=0.585,p<0.001)。
In order to explore the effect of environmental factors on radial gowth of Piruts sylvestris var. mongolica on sandy soil in Zhanggutai, P. sylvestris var. mongolica planted in this area in spring of 1980 and 1986 were studied, and relationship between ring width and climatic factors was explored by correlation analysis with SPSS 17.0 soitware based on stem analysis.The results showed that growth tendency of P. sylvestris var. mongolica on Zhanggutai sandy soil was highly sensitive to environmental factors, and both were significantly correlated.The most important factors influencing ring width were detemained through significant test on partial re- gression coetticient, which were mean annual temperature （X1）, precipitation （ X5 ）, wind velocity （X7）, the highest temperature in soil surface （X9） , and the lowest temperature in soil surface （X10）.A regression equation was generated： Y=0.1718-0.0673X1 ＋ 0.0004X5＋0.0982X7＋0.0145X9＋0.0448X10 （R2=0.585, p 〈 0.001 ）.
出处
《辽宁林业科技》
2015年第5期19-22,46,共5页
Liaoning Forestry Science and Technology
基金
国家林业局林业公益性行业科研专项经费项目(201004063)
关键词
树干解析
年轮宽度
回归方程
沙地樟子松
章古台
stem analysis, ring width, regression equation, Pinus sylvestris var. mongolica on sandy soil, Zhanggutai
