阿尔泰山林下灌木生物量生长模型研究

[目的]研究阿尔泰山林下灌木生物量生长模型。[方法]以新疆阿尔泰山常见的6种林下灌木多刺蔷薇(Rosaspinosissima Linn.)、蓝果忍冬(Lonicera cearulea Linn.)、黑果小檗(Berberis heteropoda Schrenk.)、新疆方枝柏(Juniperus pseudosabina Fisch.et Mey.)、大叶绣线菊(Spiraea Chamardryfolia Linn.)、黑果栒子(Cotoneaster melanocarpus Lodd.)为研究对象,利用不同函数和自变量(D2H)构建单一物种的器官及个体生物量估算模型,筛选出相关性最高、拟合度最好的模型作为生物量最佳估算模型。[结果]阿尔泰山6种常见灌木单株生物量从大到小依次为黑果栒子[(20.78±8.99)kg]、黑果小檗[(13.24±6.14)kg]、蓝果忍冬[(12.17±3.63)kg]、大叶绣线菊[(9.20±3.74)kg]、新疆方枝柏[(4.87±0.96)kg]、多刺蔷薇[(4.09±1.78)kg];通过对不同物种不同营养器官的Pearson相关检验发现,除了新疆方枝柏外,其余5种灌木各营养器官生物量差异显著(P0.05);对阿尔泰山6种灌木各营养器官生物量和单株生物量共拟合27组模型,其中线性函数7组,二项式函数9组,指数函数6组,对数函数4组,幂函数1组。27组函数均达到显著水平(P0.05)。[结论]该研究可对阿尔泰山森林生物量的估算提供理论依据。

Study on Biomass Estimation Model of Dominant Woody Shrubs in Altay Mountain

[Objective]To study the biomass estimation model of dominant woody shrubs in Altay Mountain .[Method] Taking 6 species of dominant woody shrubs (Rosa spinosissima L., Lonicera cearulea Linn., Berberis heteropoda Schrenk,Juniperus pseudosabina Fisch.et Mey,Spiraea chamardryfolia Linn.,Cotoneaster melanocarpus Lodd.) in the eastern,central,and western areas of the Altay Mountains as research objects.Using different function and the independent variable(D 2H) to build a single species of organs and individual biomass estimation model,selecting the fit of the correlation between the highest and the best model as the best estimate of biomass model .[ Result ] The results showed that the 6 kinds of shrubs in order of the average biomass of an individual plant were Cotoneaster melanocarpus Lodd.[(20.78 ±8.99)kg],Berberis heteropoda Schrenk.[(13.24 ±6.14) kg],Lonicera cearulea Linn.[(12.17 ±3.63) kg],Spiraea Chamardryfolia Linn[(9.20 ±3.74)kg],Juniperus pseudosabina Fisch et Mey[(4.87 ±0.96) kg],Rosaspinosissima Linn.[(4.09 ±1.78) kg].Through the Pearson correlation test of different species in different vegetative organs,found that biomass of the other 5 kinds of shrubs vegetative organs differ significantly (P<0.05) except the Juniperus pseudosabina Fisch.et Mey.Vegetative organs of 6 kinds of shrub biomass and plant biomass were fitting 27 groups,among them,7 set of linear function,9 set of binomial function,6 set of exponential function ,4 set of logarithmic function,1 set of power function.Function of 27 group were significant (P<0.05).[Conclusion] This study can provide theory basis for the forest biomass estimation of Altay Mountains in the future .