广东西江流域肉桂林木收获模型

肉桂 (CinnamomumcassiaPresel)是我国著名的特产树种之一 ,西江桂皮和桂油是国际驰名的香料以及医药原料 .为确切地预估肉桂收获量 ,该文利用多元回归分析法和西江林场 6年生肉桂树木的实测数据建立了肉桂树皮、枝叶和树干的收获模型 ,分别是 :W皮 =6 0 0 774× 10 - 3 (HD0 ) 1 4 0 759;W枝叶 =0 0 5 6 0 44 6 8(HD0 ) 1 3 64 1 1 ;W树干 =0 0 1082 73(HD0 ) 1 79864 .同时模型显示肉桂的收获量与地径、树高密切相关 .经实际检验 ,收获模型估测精度较高 ,达 94%以上 ,具有很好的实用价值 .

Harvest models of Cinnamomum cassia in the drainage area of Xijiang River in Guangdong Province

Cinnamon tree (Cinnamomum cassia Presel) is one of the famous trees with special products in China. Cinnamon bark and oil are internationally well-known raw materials of spice and medicine. In order to estimate the harvest amount of cinnamon accurately, the harvest models of cinnamon bark, of branches and leaves, and of trunk were established by the mathematic methods of multiple regression and the measure data of 6 years old cinnamon trees. The models show that the harvest amount was close correlated with terra diameter and height of trees. At last, the models were verified in practice and the precision reached 94%. The authors conclude that the models have a high practicality.