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以毛乌素沙地中间锦鸡儿(Caragana intermedia)为研究对象,采用株高和冠幅参数及其组合为自变量,分别构建了其枝条、叶、地上部分、根和整株生物量预测模型。通过综合分析各预测模型的判定系数、回归检验显著水平、总相对误差和平均相对误差绝对值等指标,筛选出中间锦鸡儿最佳生物量估测模型,且以幂函数为主。枝条生物量WB=1.054H3.124,叶生物量WL=0.096e0.496HC,地上生物量WA=1.339H2.989,根生物量WR=1.302H2.368,总生物量WT=0.159e2.685H。
Taking Caragana intermedia as an example, the biomass, biomass, biomass of shoots, leaves, shoots, roots and whole plants were constructed by using plant height and crown parameters and their combinations as independent variables. Through comprehensive analysis of the coefficient of determination of each prediction model, the significant level of regression test, the total relative error and the average absolute value of relative error and other indicators, the best Caragana microphylla biomass estimation model was screened, and the power function was the main factor. The shoot biomass WB = 1.054H3.124, leaf biomass WL = 0.096e0.496HC, aboveground biomass WA = 1.339H2.989, root biomass WR = 1.302H2.368, total biomass WT = 0.159e2.685H.