Studies on the Growth of Poplar Plantation of Different Spacings
- Received Date: 1993-04-13
- Available Online: 2012-12-04
Abstract: Data of Ⅰ-69 poplar plantations of 11 different spacings was used to build the D.B.H. and H growth models. Through comparison of 6 kinds of different models, one best suitable model was selected for the H growth (Logistic model) and one for the D.B.H. growth model (mitscherlich model). The D.B.H. growth of trees of 11 different spacings can be classified into 5 groups: (4m×6m, 4m×7m); (5m×6m, 6m×6m); (5m×8m, 6m×8m, 7m×7m); (5m×10m, 7m×8m, 8m×8m); (5m×15m). Different spacings didn't affect the H growth of poplar plantations. Through the analysis of annual D.B.H. growth, the tree growth in different stages was studied in detail. It provides a scientific and theoretical basis for the cultivation and mangagement of poplar plantation.