CAJ | 학술논문

基于全挖法测定了海南省国营岛东林场的无性木麻黄的根的生物量，分别采用胸径和树高、地径和树高、地径和胸径及树高、材积作为自变量构建海南木麻黄根生物量生长方程。结果表明，单独以胸径、地径、材积等作自变量都能以较高的精度估算出木麻黄根的生物量，以树高为自变量的根系生物量预测精度不是很理想；采用地径与树高等复合变量的根生物量预测精度有所提高，但不明显；基于胸径、地径、材积等的根生物量估计中，以胸径为自变量的估计精度最高，在无性木麻黄根系生物量估计中，可以根据精度与外业工作量选择合适的估计方法。
기우전알법측정료해남성국영도동림장적무성목마황적근적생물량，분별채용흉경화수고、지경화수고、지경화흉경급수고、재적작위자변량구건해남목마황근생물량생장방정。결과표명，단독이흉경、지경、재적등작자변량도능이교고적정도고산출목마황근적생물량，이수고위자변량적근계생물량예측정도불시흔이상；채용지경여수고등복합변량적근생물량예측정도유소제고，단불명현；기우흉경、지경、재적등적근생물량고계중，이흉경위자변량적고계정도최고，재무성목마황근계생물량고계중，가이근거정도여외업공작량선택합괄적고계방법。
We determined the root biomass of clonal Casuarina equisetifolia of the state-run Hainan Island East Forest by whole digging, constructed the root biomass growth equation of C.equisetifolia in Hainan Province with DBH and tree height, ground diameter and tree height, ground diameter and DBH and tree height, volume variable, respectively.The high preci-sion of the C.equisetifolia root biomass can be estimated with separated variable of diameter, root collar diameter, volume, and the prediction precision of root biomass is not very ideal with variable using the tree height.The prediction precision of root biomass can get improvement but not obvious using root collar diameter and tree height composite variables.The esti-mation accuracy of root biomass with diameter variables is highest among diameter, root collar diameter and volume varia-bles, and we can select the suitable estimation method according to the precision and field workload in estimating clonal C. equisetifolia root biomass.