Based on plot surveying of populus gansuensis shelterbelts for crop in 4 soil types of Hexi Corridor,the paper studied the shelterbelt mature age, technology mature age and regeneration age of P.gansuensis shelterbels...Based on plot surveying of populus gansuensis shelterbelts for crop in 4 soil types of Hexi Corridor,the paper studied the shelterbelt mature age, technology mature age and regeneration age of P.gansuensis shelterbels for crop in different types of soil by stem analysis.展开更多
Through analysis on materials, the fitting empirical equation for growth process of Pinus tabuliformis was obtained, i.e. , the function with increment as variable and time as the independent variable. The mature age ...Through analysis on materials, the fitting empirical equation for growth process of Pinus tabuliformis was obtained, i.e. , the function with increment as variable and time as the independent variable. The mature age of P. tabuliformis was obtained by mathematical operation. The mature age of forest plantation was determined as 61 a, and that of public welfare forest was 81 a. And P. tabuliformis age groups were divided according to related technical requirements.展开更多
This study was conducted on the analytic tree and got the fitting empirical equation of tree growth, in which the tree growth rate was used as the variable and time as the independent variable. The arithmetical operat...This study was conducted on the analytic tree and got the fitting empirical equation of tree growth, in which the tree growth rate was used as the variable and time as the independent variable. The arithmetical operation to the function got the mature age of tree growth, and the practical and ideal mature ages of Pinus densiflora were 58 and 123.5 a, respectively. In addition, the application research direction and matters needing attention were proposed.展开更多
This study was conducted on the analytic tree and got the fitting empirical equation of tree growth, in which the tree increment was used as the variable and time as the independent variable. The arithmetical operatio...This study was conducted on the analytic tree and got the fitting empirical equation of tree growth, in which the tree increment was used as the variable and time as the independent variable. The arithmetical operation to the function gave the mature age of tree growth, and the practical mature age of Pinus thunbergii×P. densiflora was 41 a. In addition, the application as well as the research direction and matters needing attention were proposed.展开更多
Through the study of parse wood materials, the fitting empirical equation of tree growth was obtained, a function with tree growth as a variable and time as an independent variable. Through mathematical operations suc...Through the study of parse wood materials, the fitting empirical equation of tree growth was obtained, a function with tree growth as a variable and time as an independent variable. Through mathematical operations such as function derivation, the mature age of tree growth was obtained. The obtained maturity age for the actual forest of Pinus thunbergii Parl was 51 a, and the ideal mature age was 66 a. And the application, research directions and precautions of the mature ages were proposed.展开更多
Through the study of parse wood materials, the fitting empirical equation of tree growth was obtained, a function with tree growth as a variable and time as an independent variable. The mature age of tree growth was o...Through the study of parse wood materials, the fitting empirical equation of tree growth was obtained, a function with tree growth as a variable and time as an independent variable. The mature age of tree growth was obtained through mathematical operations such as function derivation. The obtained expected maturity ages for the actual forests of Robinia pseudoacacia were 36, 46 and 56 a, respectively, which could be the mature ages for commercial forest, protection forest and special-purpose forest. And the application, research directions and precautions of the mature ages were proposed.展开更多
Based on the study of parse wood materials,the fitting empirical equation of tree growth was obtained,a function with tree growth as a variable and time as an independent variable.Through mathematical operations such ...Based on the study of parse wood materials,the fitting empirical equation of tree growth was obtained,a function with tree growth as a variable and time as an independent variable.Through mathematical operations such as function derivation,the mature age of tree growth was obtained,and the obtained expected mature age for Larix kaempferi was 46 years.And the application,research directions and precautions of the mature ages were proposed.展开更多
Based on the study of parse wood materials,the fitting empirical equation of tree growth was obtained,a function with tree growth as a variable and time as an independent variable.Through mathematical operations such ...Based on the study of parse wood materials,the fitting empirical equation of tree growth was obtained,a function with tree growth as a variable and time as an independent variable.Through mathematical operations such as function derivation,the mature age of tree growth was obtained,and the obtained expected mature age of Saliz matsudana was 21a.And the application,research directions and precautions of the mature ages were proposed.展开更多
Objective To identify the constitutional and anatomical peculiarities of constitution of women of mature age.Methods There was completed comprehensive anthropometric and bio-electrical survey of 651mature women(relati...Objective To identify the constitutional and anatomical peculiarities of constitution of women of mature age.Methods There was completed comprehensive anthropometric and bio-electrical survey of 651mature women(relative norm)living in the Moscow region.Results The quantitative distribution of women by somatotypological affiliation was revealed;anthropometric and body component composition in representatives of different somatotypes were defined.Conclusion Thus,the performed study revealed and quantiely characterised the distribution of women according to their constitutional types in the studied population of mature age women living in Moscow region under the relative norm conditions.展开更多
文摘Based on plot surveying of populus gansuensis shelterbelts for crop in 4 soil types of Hexi Corridor,the paper studied the shelterbelt mature age, technology mature age and regeneration age of P.gansuensis shelterbels for crop in different types of soil by stem analysis.
文摘Through analysis on materials, the fitting empirical equation for growth process of Pinus tabuliformis was obtained, i.e. , the function with increment as variable and time as the independent variable. The mature age of P. tabuliformis was obtained by mathematical operation. The mature age of forest plantation was determined as 61 a, and that of public welfare forest was 81 a. And P. tabuliformis age groups were divided according to related technical requirements.
文摘This study was conducted on the analytic tree and got the fitting empirical equation of tree growth, in which the tree growth rate was used as the variable and time as the independent variable. The arithmetical operation to the function got the mature age of tree growth, and the practical and ideal mature ages of Pinus densiflora were 58 and 123.5 a, respectively. In addition, the application research direction and matters needing attention were proposed.
文摘This study was conducted on the analytic tree and got the fitting empirical equation of tree growth, in which the tree increment was used as the variable and time as the independent variable. The arithmetical operation to the function gave the mature age of tree growth, and the practical mature age of Pinus thunbergii×P. densiflora was 41 a. In addition, the application as well as the research direction and matters needing attention were proposed.
文摘Through the study of parse wood materials, the fitting empirical equation of tree growth was obtained, a function with tree growth as a variable and time as an independent variable. Through mathematical operations such as function derivation, the mature age of tree growth was obtained. The obtained maturity age for the actual forest of Pinus thunbergii Parl was 51 a, and the ideal mature age was 66 a. And the application, research directions and precautions of the mature ages were proposed.
文摘Through the study of parse wood materials, the fitting empirical equation of tree growth was obtained, a function with tree growth as a variable and time as an independent variable. The mature age of tree growth was obtained through mathematical operations such as function derivation. The obtained expected maturity ages for the actual forests of Robinia pseudoacacia were 36, 46 and 56 a, respectively, which could be the mature ages for commercial forest, protection forest and special-purpose forest. And the application, research directions and precautions of the mature ages were proposed.
文摘Based on the study of parse wood materials,the fitting empirical equation of tree growth was obtained,a function with tree growth as a variable and time as an independent variable.Through mathematical operations such as function derivation,the mature age of tree growth was obtained,and the obtained expected mature age for Larix kaempferi was 46 years.And the application,research directions and precautions of the mature ages were proposed.
文摘Based on the study of parse wood materials,the fitting empirical equation of tree growth was obtained,a function with tree growth as a variable and time as an independent variable.Through mathematical operations such as function derivation,the mature age of tree growth was obtained,and the obtained expected mature age of Saliz matsudana was 21a.And the application,research directions and precautions of the mature ages were proposed.
文摘Objective To identify the constitutional and anatomical peculiarities of constitution of women of mature age.Methods There was completed comprehensive anthropometric and bio-electrical survey of 651mature women(relative norm)living in the Moscow region.Results The quantitative distribution of women by somatotypological affiliation was revealed;anthropometric and body component composition in representatives of different somatotypes were defined.Conclusion Thus,the performed study revealed and quantiely characterised the distribution of women according to their constitutional types in the studied population of mature age women living in Moscow region under the relative norm conditions.
