中南林业调查规划
中南林業調查規劃
중남임업조사규화
CENTRAL SOUTH FOREST INVENTORY AND PLANNING
2014年
2期
1-4,10
,共5页
立木材积%地上生物量%地下生物量%度量误差模型%相容性7
立木材積%地上生物量%地下生物量%度量誤差模型%相容性7
립목재적%지상생물량%지하생물량%도량오차모형%상용성7
volume%above-ground biomass%below-ground biomass%error-variable-model%compatible model
依据中国西南地区栎类和桦木的立木材积及生物量实测数据,采用度量误差模型的方法,建立栎类和桦木材积相容的地上生物量及地下生物量模型。结果表明,在地上生物量模型中,增加树高因子,立木材积模型的相关统计指标有较大幅度的改进,栎类和桦木二元材积模型的平均预估精度分别达到了97.86%和97.08%,而二元地上生物量模型的相关统计指标并没明显的改进;两树种一元与二元地下生物量模型的相关统计指标差异并不明显,平均预估精度均达到了90%以上。
依據中國西南地區櫟類和樺木的立木材積及生物量實測數據,採用度量誤差模型的方法,建立櫟類和樺木材積相容的地上生物量及地下生物量模型。結果錶明,在地上生物量模型中,增加樹高因子,立木材積模型的相關統計指標有較大幅度的改進,櫟類和樺木二元材積模型的平均預估精度分彆達到瞭97.86%和97.08%,而二元地上生物量模型的相關統計指標併沒明顯的改進;兩樹種一元與二元地下生物量模型的相關統計指標差異併不明顯,平均預估精度均達到瞭90%以上。
의거중국서남지구력류화화목적립목재적급생물량실측수거,채용도량오차모형적방법,건립력류화화목재적상용적지상생물량급지하생물량모형。결과표명,재지상생물량모형중,증가수고인자,립목재적모형적상관통계지표유교대폭도적개진,력류화화목이원재적모형적평균예고정도분별체도료97.86%화97.08%,이이원지상생물량모형적상관통계지표병몰명현적개진;량수충일원여이원지하생물량모형적상관통계지표차이병불명현,평균예고정도균체도료90%이상。
Based on the tree volume and above-ground biomass data of Quercus and Birch in southwestern Chi-na,single-tree biomass models systems of Quercus and Birch (including the compatible tree volume and above-ground biomass model and below-ground biomass model)were constructed by using the error-in-variable simul-taneous equations. The results showed that:1 )The regressions of volume equations improved significantly when tree height was used together with diameter at breast height (DBH),through the two variables-based equa-tions,the prediction precision of tree volume of Quercus and Birch were 97.86% and 97.08% respectively, while the regressions of biomass equations improved slightly. 2)The difference was slightly small between one variable-based below-ground biomass model and two variables-based model. The prediction precision of below-ground model was more than 90%.